LegalizeDAG.cpp revision cad063f1a8ecda4fd556a733dc5eaa8a96acb80d
13e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===-- LegalizeDAG.cpp - Implement SelectionDAG::Legalize ----------------===// 2edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 33e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// The LLVM Compiler Infrastructure 43e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 53e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// This file was developed by the LLVM research group and is distributed under 63e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// the University of Illinois Open Source License. See LICENSE.TXT for details. 7edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 83e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 93e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// This file implements the SelectionDAG::Legalize method. 113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/SelectionDAG.h" 153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/MachineConstantPool.h" 163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/MachineFunction.h" 1745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner#include "llvm/CodeGen/MachineFrameInfo.h" 183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Target/TargetLowering.h" 19e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner#include "llvm/Target/TargetData.h" 200f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner#include "llvm/Target/TargetOptions.h" 21adf6a965a321372c640845407195594835921eb4Chris Lattner#include "llvm/CallingConv.h" 223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Constants.h" 233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include <iostream> 243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerclass SelectionDAGLegalize { 403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TargetLowering &TLI; 413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizeAction - This enum indicates what action we should take for each 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type the can occur in the program. 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Legal, // The target natively supports this value type. 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Promote, // This should be promoted to the next larger type. 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Expand, // This integer type should be broken into smaller pieces. 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner unsigned ValueTypeActions; 553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// NeedsAnotherIteration - This is set when we expand a large integer 573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// operation into smaller integer operations, but the smaller operations are 583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// not set. This occurs only rarely in practice, for targets that don't have 593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 32-bit or larger integer registers. 603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool NeedsAnotherIteration; 613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::map<SDOperand, SDOperand> LegalizedNodes; 663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 6703c8546ec57523970874917854a2fb77b1ff598eChris Lattner /// PromotedNodes - For nodes that are below legal width, and that have more 6803c8546ec57523970874917854a2fb77b1ff598eChris Lattner /// than one use, this map indicates what promoted value to use. This allows 6903c8546ec57523970874917854a2fb77b1ff598eChris Lattner /// us to avoid promoting the same thing more than once. 7003c8546ec57523970874917854a2fb77b1ff598eChris Lattner std::map<SDOperand, SDOperand> PromotedNodes; 7103c8546ec57523970874917854a2fb77b1ff598eChris Lattner 723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ExpandedNodes - For nodes that need to be expanded, and which have more 733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates which which operands are the expanded 743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// version of the input. This allows us to avoid expanding the same node 753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// more than once. 763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::map<SDOperand, std::pair<SDOperand, SDOperand> > ExpandedNodes; 773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 788afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner void AddLegalizedOperand(SDOperand From, SDOperand To) { 798afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner bool isNew = LegalizedNodes.insert(std::make_pair(From, To)).second; 808afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner assert(isNew && "Got into the map somehow?"); 818afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 8203c8546ec57523970874917854a2fb77b1ff598eChris Lattner void AddPromotedOperand(SDOperand From, SDOperand To) { 8303c8546ec57523970874917854a2fb77b1ff598eChris Lattner bool isNew = PromotedNodes.insert(std::make_pair(From, To)).second; 8403c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isNew && "Got into the map somehow?"); 8503c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 868afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 899c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SelectionDAGLegalize(SelectionDAG &DAG); 903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// Run - While there is still lowering to do, perform a pass over the DAG. 923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// Most regularization can be done in a single pass, but targets that require 933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// large values to be split into registers multiple times (e.g. i64 -> 4x 943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// i16) require iteration for these values (the first iteration will demote 953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// to i32, the second will demote to i16). 963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void Run() { 973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner do { 983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NeedsAnotherIteration = false; 993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizeDAG(); 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } while (NeedsAnotherIteration); 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizeAction getTypeAction(MVT::ValueType VT) const { 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return (LegalizeAction)((ValueTypeActions >> (2*VT)) & 3); 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isTypeLegal(MVT::ValueType VT) const { 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerprivate: 1173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LegalizeOp(SDOperand O); 1203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void ExpandOp(SDOperand O, SDOperand &Lo, SDOperand &Hi); 12103c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand PromoteOp(SDOperand O); 1223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 12377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand ExpandLibCall(const char *Name, SDNode *Node, 12477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand &Hi); 12577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand ExpandIntToFP(bool isSigned, MVT::ValueType DestTy, 12677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Source); 127cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 128cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SDOperand ExpandLegalUINT_TO_FP(SDOperand LegalOp, MVT::ValueType DestVT); 129cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SDOperand PromoteLegalUINT_TO_FP(SDOperand LegalOp, MVT::ValueType DestVT); 130cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 131e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner bool ExpandShift(unsigned Opc, SDOperand Op, SDOperand Amt, 132e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand &Lo, SDOperand &Hi); 1335b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner void ExpandShiftParts(unsigned NodeOp, SDOperand Op, SDOperand Amt, 1345b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner SDOperand &Lo, SDOperand &Hi); 1355b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner void ExpandByParts(unsigned NodeOp, SDOperand LHS, SDOperand RHS, 1364759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner SDOperand &Lo, SDOperand &Hi); 137e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 138b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner void SpliceCallInto(const SDOperand &CallResult, SDNode *OutChain); 139b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner 1403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand getIntPtrConstant(uint64_t Val) { 1413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return DAG.getConstant(Val, TLI.getPointerTy()); 1423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1479c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris LattnerSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag) 1489c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner : TLI(dag.getTargetLoweringInfo()), DAG(dag), 1499c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner ValueTypeActions(TLI.getValueTypeActions()) { 1503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::LAST_VALUETYPE <= 16 && 1513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 1523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 154cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// ExpandLegalUINT_TO_FP - This function is responsible for legalizing a 155cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// UINT_TO_FP operation of the specified operand when the target requests that 156cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// we expand it. At this point, we know that the result and operand types are 157cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// legal for the target. 158cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris LattnerSDOperand SelectionDAGLegalize::ExpandLegalUINT_TO_FP(SDOperand Op0, 159cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner MVT::ValueType DestVT) { 160cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner assert(Op0.getValueType() == MVT::i32 && 161cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner "This code only works for i32 input: extend in the future"); 162cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SDOperand Tmp1 = DAG.getNode(ISD::SINT_TO_FP, DestVT, Op0); 163cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 164cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SDOperand SignSet = DAG.getSetCC(ISD::SETLT, TLI.getSetCCResultTy(), 165cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner Op0, 166cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner DAG.getConstant(0, 167cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner Op0.getValueType())); 168cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SDOperand Zero = getIntPtrConstant(0), Four = getIntPtrConstant(4); 169cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SDOperand CstOffset = DAG.getNode(ISD::SELECT, Zero.getValueType(), 170cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SignSet, Four, Zero); 171cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 172cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner uint64_t FF = 0x5f800000ULL; 173cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 174cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner static Constant *FudgeFactor = ConstantUInt::get(Type::ULongTy, FF); 175cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 176cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner MachineConstantPool *CP = DAG.getMachineFunction().getConstantPool(); 177cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SDOperand CPIdx = DAG.getConstantPool(CP->getConstantPoolIndex(FudgeFactor), 178cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner TLI.getPointerTy()); 179cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner CPIdx = DAG.getNode(ISD::ADD, TLI.getPointerTy(), CPIdx, CstOffset); 180cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner SDOperand FudgeInReg; 181cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner if (DestVT == MVT::f32) 182cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner FudgeInReg = DAG.getLoad(MVT::f32, DAG.getEntryNode(), CPIdx, 183cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner DAG.getSrcValue(NULL)); 184cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner else { 185cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner assert(DestVT == MVT::f64 && "Unexpected conversion"); 186cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner FudgeInReg = LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, MVT::f64, 187cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner DAG.getEntryNode(), CPIdx, 188cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner DAG.getSrcValue(NULL), MVT::f32)); 189cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner } 190cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 191cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner NeedsAnotherIteration = true; 192cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner return DAG.getNode(ISD::ADD, DestVT, Tmp1, FudgeInReg); 193cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner} 194cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 195cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// PromoteLegalUINT_TO_FP - This function is responsible for legalizing a 196cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// UINT_TO_FP operation of the specified operand when the target requests that 197cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// we promote it. At this point, we know that the result and operand types are 198cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 199cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner/// operation that takes a larger input. 200cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris LattnerSDOperand SelectionDAGLegalize::PromoteLegalUINT_TO_FP(SDOperand LegalOp, 201cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner MVT::ValueType DestVT) { 202cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 203cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner MVT::ValueType NewInTy = LegalOp.getValueType(); 204cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 205cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner unsigned OpToUse = 0; 206cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 207cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // Scan for the appropriate larger type to use. 208cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner while (1) { 209cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner NewInTy = (MVT::ValueType)(NewInTy+1); 210cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner assert(MVT::isInteger(NewInTy) && "Ran out of possibilities!"); 211cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 212cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // If the target supports SINT_TO_FP of this type, use it. 213cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner switch (TLI.getOperationAction(ISD::SINT_TO_FP, NewInTy)) { 214cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner default: break; 215cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner case TargetLowering::Legal: 216cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner if (!TLI.hasNativeSupportFor(NewInTy)) 217cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner break; // Can't use this datatype. 218cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // FALL THROUGH. 219cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner case TargetLowering::Custom: 220cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner OpToUse = ISD::SINT_TO_FP; 221cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner break; 222cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner } 223cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner if (OpToUse) break; 224cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 225cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // If the target supports UINT_TO_FP of this type, use it. 226cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner switch (TLI.getOperationAction(ISD::UINT_TO_FP, NewInTy)) { 227cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner default: break; 228cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner case TargetLowering::Legal: 229cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner if (!TLI.hasNativeSupportFor(NewInTy)) 230cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner break; // Can't use this datatype. 231cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // FALL THROUGH. 232cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner case TargetLowering::Custom: 233cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner OpToUse = ISD::UINT_TO_FP; 234cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner break; 235cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner } 236cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner if (OpToUse) break; 237cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 238cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // Otherwise, try a larger type. 239cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner } 240cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 241cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // Make sure to legalize any nodes we create here in the next pass. 242cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner NeedsAnotherIteration = true; 243cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 244cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 245cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner // desired type then run the operation on it. 246cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner return DAG.getNode(OpToUse, DestVT, 247cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner DAG.getNode(ISD::ZERO_EXTEND, NewInTy, LegalOp)); 248cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner} 249cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner 2503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand OldRoot = DAG.getRoot(); 2523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand NewRoot = LegalizeOp(OldRoot); 2533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner DAG.setRoot(NewRoot); 2543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandedNodes.clear(); 2563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 25771c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner PromotedNodes.clear(); 2583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 26062fd269c146d9023efe32644e44cd97b88631d4fChris Lattner DAG.RemoveDeadNodes(OldRoot.Val); 2613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris LattnerSDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { 264e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner assert(getTypeAction(Op.getValueType()) == Legal && 265e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner "Caller should expand or promote operands that are not legal!"); 26645982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner SDNode *Node = Op.Val; 267e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 2683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If this operation defines any values that cannot be represented in a 269e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner // register on this target, make sure to expand or promote them. 27045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (Node->getNumValues() > 1) { 27145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 27245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner switch (getTypeAction(Node->getValueType(i))) { 2733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: break; // Nothing to do. 2743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 2753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand T1, T2; 2763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Op.getValue(i), T1, T2); 2773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(LegalizedNodes.count(Op) && 2783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Expansion didn't add legal operands!"); 2793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return LegalizedNodes[Op]; 2803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 28203c8546ec57523970874917854a2fb77b1ff598eChris Lattner PromoteOp(Op.getValue(i)); 28303c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(LegalizedNodes.count(Op) && 28403c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Expansion didn't add legal operands!"); 28503c8546ec57523970874917854a2fb77b1ff598eChris Lattner return LegalizedNodes[Op]; 2863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 28945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 29045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 291e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::map<SDOperand, SDOperand>::iterator I = LegalizedNodes.find(Op); 292e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 2933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 294fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner SDOperand Tmp1, Tmp2, Tmp3; 2953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Result = Op; 2973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 2993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 300d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 301d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner // If this is a target node, legalize it by legalizing the operands then 302d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner // passing it through. 303d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner std::vector<SDOperand> Ops; 304d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner bool Changed = false; 305d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 306d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 307d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Changed = Changed || Node->getOperand(i) != Ops.back(); 308d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 309d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Changed) 310d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getNumValues() == 1) 311d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Ops); 312d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner else { 313d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), 314d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Node->value_end()); 315d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Result = DAG.getNode(Node->getOpcode(), VTs, Ops); 316d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 317d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 318d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 319d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner AddLegalizedOperand(Op.getValue(i), Result.getValue(i)); 320d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner return Result.getValue(Op.ResNo); 321d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 322d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner // Otherwise this is an unhandled builtin node. splat. 3233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 3243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(0 && "Do not know how to legalize this operator!"); 3253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner abort(); 3263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::EntryToken: 3273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::FrameIndex: 3283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::GlobalAddress: 32903c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::ExternalSymbol: 33069a52155d2eff066b49dbac385113002fd9dba14Chris Lattner case ISD::ConstantPool: // Nothing to do. 3313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(getTypeAction(Node->getValueType(0)) == Legal && 3323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "This must be legal!"); 3333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 33469a52155d2eff066b49dbac385113002fd9dba14Chris Lattner case ISD::CopyFromReg: 33569a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 33669a52155d2eff066b49dbac385113002fd9dba14Chris Lattner if (Tmp1 != Node->getOperand(0)) 33769a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Result = DAG.getCopyFromReg(cast<RegSDNode>(Node)->getReg(), 33869a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Node->getValueType(0), Tmp1); 33913c184de29c09294ed63b01ac43e1b46c049278eChris Lattner else 34013c184de29c09294ed63b01ac43e1b46c049278eChris Lattner Result = Op.getValue(0); 34113c184de29c09294ed63b01ac43e1b46c049278eChris Lattner 34213c184de29c09294ed63b01ac43e1b46c049278eChris Lattner // Since CopyFromReg produces two values, make sure to remember that we 34313c184de29c09294ed63b01ac43e1b46c049278eChris Lattner // legalized both of them. 34413c184de29c09294ed63b01ac43e1b46c049278eChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 34513c184de29c09294ed63b01ac43e1b46c049278eChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 34613c184de29c09294ed63b01ac43e1b46c049278eChris Lattner return Result.getValue(Op.ResNo); 34718c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner case ISD::ImplicitDef: 34818c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 34918c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner if (Tmp1 != Node->getOperand(0)) 3502ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner Result = DAG.getImplicitDef(Tmp1, cast<RegSDNode>(Node)->getReg()); 35118c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner break; 352fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: { 353fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman MVT::ValueType VT = Op.getValueType(); 354fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman switch (TLI.getOperationAction(ISD::UNDEF, VT)) { 355ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman default: assert(0 && "This action is not supported yet!"); 356ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Expand: 357ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Promote: 358fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman if (MVT::isInteger(VT)) 359fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getConstant(0, VT); 360fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman else if (MVT::isFloatingPoint(VT)) 361fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getConstantFP(0, VT); 362fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman else 363fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman assert(0 && "Unknown value type!"); 364fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 365ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Legal: 366fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 367fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman } 368fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 369fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman } 3703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::Constant: 3713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // We know we don't need to expand constants here, constants only have one 3723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // value and we check that it is fine above. 3733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // FIXME: Maybe we should handle things like targets that don't support full 3753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // 32-bit immediates? 3763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 3773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ConstantFP: { 3783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Spill FP immediates to the constant pool if the target cannot directly 3793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // codegen them. Targets often have some immediate values that can be 3803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // efficiently generated into an FP register without a load. We explicitly 3813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // leave these constants as ConstantFP nodes for the target to deal with. 3823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 3843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Check to see if this FP immediate is already legal. 3863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isLegal = false; 3873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(), 3883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner E = TLI.legal_fpimm_end(); I != E; ++I) 3893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (CFP->isExactlyValue(*I)) { 3903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner isLegal = true; 3913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 3923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 3933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!isLegal) { 3953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Otherwise we need to spill the constant to memory. 3963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MachineConstantPool *CP = DAG.getMachineFunction().getConstantPool(); 3973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool Extend = false; 3993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If a FP immediate is precise when represented as a float, we put it 4013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // into the constant pool as a float, even if it's is statically typed 4023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // as a double. 4033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MVT::ValueType VT = CFP->getValueType(0); 4043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isDouble = VT == MVT::f64; 4053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ConstantFP *LLVMC = ConstantFP::get(isDouble ? Type::DoubleTy : 4063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Type::FloatTy, CFP->getValue()); 40799939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner if (isDouble && CFP->isExactlyValue((float)CFP->getValue()) && 40899939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner // Only do this if the target has a native EXTLOAD instruction from 40999939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner // f32. 41099939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner TLI.getOperationAction(ISD::EXTLOAD, 41199939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner MVT::f32) == TargetLowering::Legal) { 4123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LLVMC = cast<ConstantFP>(ConstantExpr::getCast(LLVMC, Type::FloatTy)); 4133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner VT = MVT::f32; 4143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Extend = true; 4153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 416edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 4173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand CPIdx = DAG.getConstantPool(CP->getConstantPoolIndex(LLVMC), 4183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TLI.getPointerTy()); 419f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner if (Extend) { 4205f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Result = DAG.getExtLoad(ISD::EXTLOAD, MVT::f64, DAG.getEntryNode(), 4215f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner CPIdx, DAG.getSrcValue(NULL), MVT::f32); 422f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner } else { 42352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getLoad(VT, DAG.getEntryNode(), CPIdx, 42452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner DAG.getSrcValue(NULL)); 425f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner } 4263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 429a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner case ISD::TokenFactor: { 430a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner std::vector<SDOperand> Ops; 431a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner bool Changed = false; 432a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 4331e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner SDOperand Op = Node->getOperand(i); 4341e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner // Fold single-use TokenFactor nodes into this token factor as we go. 435e131e5b81e5853f3c2a8c63651898ecd37eaf6f8Chris Lattner // FIXME: This is something that the DAGCombiner should do!! 4361e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner if (Op.getOpcode() == ISD::TokenFactor && Op.hasOneUse()) { 4371e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Changed = true; 4381e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner for (unsigned j = 0, e = Op.getNumOperands(); j != e; ++j) 4391e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Ops.push_back(LegalizeOp(Op.getOperand(j))); 4401e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner } else { 4411e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Ops.push_back(LegalizeOp(Op)); // Legalize the operands 4421e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Changed |= Ops[i] != Op; 4431e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner } 444a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner } 445a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner if (Changed) 446a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Ops); 447a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner break; 448a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner } 449a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner 45016cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_START: 45116cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 4523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 453128b52d3d75f4b74367de43e891cd98b5a9b5483Chris Lattner // Do not try to legalize the target-specific arguments (#1+) 45445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner Tmp2 = Node->getOperand(0); 45545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (Tmp1 != Tmp2) { 45688de6e77bfadea8962b017f372658204ab71448cChris Lattner Node->setAdjCallChain(Tmp1); 45745982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner 45845982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // If moving the operand from pointing to Tmp2 dropped its use count to 1, 45945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // this will cause the maps used to memoize results to get confused. 46045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Create and add a dummy use, just to increase its use count. This will 46145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // be removed at the end of legalize when dead nodes are removed. 46245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (Tmp2.Val->hasOneUse()) 46345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner DAG.getNode(ISD::PCMARKER, MVT::Other, Tmp2, 46445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner DAG.getConstant(0, MVT::i32)); 46545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner } 46616cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // Note that we do not create new CALLSEQ_DOWN/UP nodes here. These 46788de6e77bfadea8962b017f372658204ab71448cChris Lattner // nodes are treated specially and are mutated in place. This makes the dag 46888de6e77bfadea8962b017f372658204ab71448cChris Lattner // legalization process more efficient and also makes libcall insertion 46988de6e77bfadea8962b017f372658204ab71448cChris Lattner // easier. 4703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 471fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner case ISD::DYNAMIC_STACKALLOC: 472fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 473fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the size. 474fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the alignment. 475fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 476adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner Tmp3 != Node->getOperand(2)) { 477adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), Node->value_end()); 478adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner std::vector<SDOperand> Ops; 479adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 480adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner Result = DAG.getNode(ISD::DYNAMIC_STACKALLOC, VTs, Ops); 481adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner } else 482513e52ec4e20048a8f491498d219a2669283f3bdChris Lattner Result = Op.getValue(0); 483fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner 484fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner // Since this op produces two values, make sure to remember that we 485fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner // legalized both of them. 486fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 487fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 488fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner return Result.getValue(Op.ResNo); 489fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner 490d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner case ISD::TAILCALL: 4913d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner case ISD::CALL: { 4923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 4943d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 4953d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner bool Changed = false; 4963d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 4973d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) { 4983d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 4993d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 5003d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 5013d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 5023d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || Changed) { 5033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<MVT::ValueType> RetTyVTs; 5043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.reserve(Node->getNumValues()); 5053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 506ebda942efcb86634a6581aae76a0d0c92c4a232eChris Lattner RetTyVTs.push_back(Node->getValueType(i)); 507d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner Result = SDOperand(DAG.getCall(RetTyVTs, Tmp1, Tmp2, Ops, 508d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner Node->getOpcode() == ISD::TAILCALL), 0); 50938d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner } else { 51038d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner Result = Result.getValue(0); 5113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 51238d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner // Since calls produce multiple values, make sure to remember that we 51338d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner // legalized all of them. 51438d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 51538d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner AddLegalizedOperand(SDOperand(Node, i), Result.getValue(i)); 51638d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner return Result.getValue(Op.ResNo); 5173d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 518c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner case ISD::BR: 519c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 520c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner if (Tmp1 != Node->getOperand(0)) 521c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner Result = DAG.getNode(ISD::BR, MVT::Other, Tmp1, Node->getOperand(1)); 522c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner break; 523c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner 524c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner case ISD::BRCOND: 525c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 52647e9223e06390897c3834f8c527001df392570ffChris Lattner 52747e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 52847e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 52947e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 53047e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the condition. 53147e9223e06390897c3834f8c527001df392570ffChris Lattner break; 53247e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 53347e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Promote the condition. 53447e9223e06390897c3834f8c527001df392570ffChris Lattner break; 53547e9223e06390897c3834f8c527001df392570ffChris Lattner } 536c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner // Basic block destination (Op#2) is always legal. 537c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 538c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Result = DAG.getNode(ISD::BRCOND, MVT::Other, Tmp1, Tmp2, 539c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Node->getOperand(2)); 540c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner break; 541411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case ISD::BRCONDTWOWAY: 542411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 543411e888c1b4155190c8cffe388631ee20693b309Chris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 544411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 545411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case Legal: 546411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the condition. 547411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 548411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case Promote: 549411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Promote the condition. 550411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 551411e888c1b4155190c8cffe388631ee20693b309Chris Lattner } 552411e888c1b4155190c8cffe388631ee20693b309Chris Lattner // If this target does not support BRCONDTWOWAY, lower it to a BRCOND/BR 553411e888c1b4155190c8cffe388631ee20693b309Chris Lattner // pair. 554411e888c1b4155190c8cffe388631ee20693b309Chris Lattner switch (TLI.getOperationAction(ISD::BRCONDTWOWAY, MVT::Other)) { 555411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case TargetLowering::Promote: 556411e888c1b4155190c8cffe388631ee20693b309Chris Lattner default: assert(0 && "This action is not supported yet!"); 557411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case TargetLowering::Legal: 558411e888c1b4155190c8cffe388631ee20693b309Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) { 559411e888c1b4155190c8cffe388631ee20693b309Chris Lattner std::vector<SDOperand> Ops; 560411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Ops.push_back(Tmp1); 561411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Ops.push_back(Tmp2); 562411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Ops.push_back(Node->getOperand(2)); 563411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Ops.push_back(Node->getOperand(3)); 564411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Result = DAG.getNode(ISD::BRCONDTWOWAY, MVT::Other, Ops); 565411e888c1b4155190c8cffe388631ee20693b309Chris Lattner } 566411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 567411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case TargetLowering::Expand: 568411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Result = DAG.getNode(ISD::BRCOND, MVT::Other, Tmp1, Tmp2, 569411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Node->getOperand(2)); 570411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Result = DAG.getNode(ISD::BR, MVT::Other, Result, Node->getOperand(3)); 571411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 572411e888c1b4155190c8cffe388631ee20693b309Chris Lattner } 573411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 574c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner 5753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::LOAD: 5763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 5773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 5782d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 5793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || 5803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(1)) 58152d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getLoad(Node->getValueType(0), Tmp1, Tmp2, 58252d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(2)); 5838afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner else 5848afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner Result = SDOperand(Node, 0); 585edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 5868afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner // Since loads produce two values, make sure to remember that we legalized 5878afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner // both of them. 5888afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 5898afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 5908afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner return Result.getValue(Op.ResNo); 5913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 5920f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::EXTLOAD: 5930f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::SEXTLOAD: 59401ff7216dd7829d4094754086baf28aa2d7149acChris Lattner case ISD::ZEXTLOAD: { 5950f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 5960f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 5970f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 5985f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner MVT::ValueType SrcVT = cast<VTSDNode>(Node->getOperand(3))->getVT(); 59901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), SrcVT)) { 60001ff7216dd7829d4094754086baf28aa2d7149acChris Lattner default: assert(0 && "This action is not supported yet!"); 6011c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner case TargetLowering::Promote: 6021c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner assert(SrcVT == MVT::i1 && "Can only promote EXTLOAD from i1 -> i8!"); 6035f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Result = DAG.getExtLoad(Node->getOpcode(), Node->getValueType(0), 6045f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Tmp1, Tmp2, Node->getOperand(2), MVT::i8); 6051c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner // Since loads produce two values, make sure to remember that we legalized 6061c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner // both of them. 6071c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 6081c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 6091c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner return Result.getValue(Op.ResNo); 610edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 61101ff7216dd7829d4094754086baf28aa2d7149acChris Lattner case TargetLowering::Legal: 61201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner if (Tmp1 != Node->getOperand(0) || 61301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner Tmp2 != Node->getOperand(1)) 6145f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Result = DAG.getExtLoad(Node->getOpcode(), Node->getValueType(0), 6155f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Tmp1, Tmp2, Node->getOperand(2), SrcVT); 61601ff7216dd7829d4094754086baf28aa2d7149acChris Lattner else 61701ff7216dd7829d4094754086baf28aa2d7149acChris Lattner Result = SDOperand(Node, 0); 61801ff7216dd7829d4094754086baf28aa2d7149acChris Lattner 61901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner // Since loads produce two values, make sure to remember that we legalized 62001ff7216dd7829d4094754086baf28aa2d7149acChris Lattner // both of them. 62101ff7216dd7829d4094754086baf28aa2d7149acChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 62201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 62301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner return Result.getValue(Op.ResNo); 62401ff7216dd7829d4094754086baf28aa2d7149acChris Lattner case TargetLowering::Expand: 6259d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth //f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 6269d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth if (SrcVT == MVT::f32 && Node->getValueType(0) == MVT::f64) { 6279d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth SDOperand Load = DAG.getLoad(SrcVT, Tmp1, Tmp2, Node->getOperand(2)); 62831559081a4285f4b7282e765aea4ec8a8e1d396cAndrew Lenharth Result = DAG.getNode(ISD::FP_EXTEND, Node->getValueType(0), Load); 6299d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth if (Op.ResNo) 6309d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth return Load.getValue(1); 6319d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth return Result; 6329d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 63301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner assert(Node->getOpcode() != ISD::EXTLOAD && 63401ff7216dd7829d4094754086baf28aa2d7149acChris Lattner "EXTLOAD should always be supported!"); 63501ff7216dd7829d4094754086baf28aa2d7149acChris Lattner // Turn the unsupported load into an EXTLOAD followed by an explicit 63601ff7216dd7829d4094754086baf28aa2d7149acChris Lattner // zero/sign extend inreg. 6375f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Result = DAG.getExtLoad(ISD::EXTLOAD, Node->getValueType(0), 6385f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Tmp1, Tmp2, Node->getOperand(2), SrcVT); 63923993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner SDOperand ValRes; 64023993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner if (Node->getOpcode() == ISD::SEXTLOAD) 64123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 64215e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result, DAG.getValueType(SrcVT)); 64323993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner else 64423993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner ValRes = DAG.getZeroExtendInReg(Result, SrcVT); 64501ff7216dd7829d4094754086baf28aa2d7149acChris Lattner AddLegalizedOperand(SDOperand(Node, 0), ValRes); 64601ff7216dd7829d4094754086baf28aa2d7149acChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 64701ff7216dd7829d4094754086baf28aa2d7149acChris Lattner if (Op.ResNo) 64801ff7216dd7829d4094754086baf28aa2d7149acChris Lattner return Result.getValue(1); 64901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner return ValRes; 65001ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 65101ff7216dd7829d4094754086baf28aa2d7149acChris Lattner assert(0 && "Unreachable"); 65201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 6533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::EXTRACT_ELEMENT: 6543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Get both the low and high parts. 6553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 6563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (cast<ConstantSDNode>(Node->getOperand(1))->getValue()) 6573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = Tmp2; // 1 -> Hi 6583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner else 6593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = Tmp1; // 0 -> Lo 6603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 6623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CopyToReg: 6633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 664edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 6653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 6663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 6673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Legalize the incoming value (must be legal). 6683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 6693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 67018c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner Result = DAG.getCopyToReg(Tmp1, Tmp2, cast<RegSDNode>(Node)->getReg()); 6713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 672ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case Promote: 673ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 674ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Result = DAG.getCopyToReg(Tmp1, Tmp2, cast<RegSDNode>(Node)->getReg()); 675ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner break; 676ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case Expand: 6773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 678edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman ExpandOp(Node->getOperand(1), Lo, Hi); 67918c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner unsigned Reg = cast<RegSDNode>(Node)->getReg(); 680ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Lo = DAG.getCopyToReg(Tmp1, Lo, Reg); 681ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi = DAG.getCopyToReg(Tmp1, Hi, Reg+1); 682ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // Note that the copytoreg nodes are independent of each other. 683ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 6843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(Result.getValueType()) && 6853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Cannot expand multiple times yet (i64 -> i16)"); 6863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 6903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::RET: 6913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 6923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getNumOperands()) { 6933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case 2: // ret val 6943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 6953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 6963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 6978afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 6983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Tmp2); 6993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 7013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 7023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 7033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Lo, Hi); 704edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman break; 7053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 7078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 7088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Tmp2); 7098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 7103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case 1: // ret void 7133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 7143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1); 7153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: { // ret <values> 7173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<SDOperand> NewValues; 7183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Tmp1); 7193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) 7203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(i).getValueType())) { 7213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 7224e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner NewValues.push_back(LegalizeOp(Node->getOperand(i))); 7233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 7253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 7263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(i), Lo, Hi); 7273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Lo); 7283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Hi); 729edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman break; 7303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 7328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "Can't promote multiple return value yet!"); 7333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, NewValues); 7353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::STORE: 7403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 7413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. 7423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 7435d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 74403c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (ConstantFPSDNode *CFP =dyn_cast<ConstantFPSDNode>(Node->getOperand(1))){ 7455d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner if (CFP->getValueType(0) == MVT::f32) { 7465d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner union { 7475d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner unsigned I; 7485d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner float F; 7495d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } V; 7505d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner V.F = CFP->getValue(); 7512d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, 7526d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner DAG.getConstant(V.I, MVT::i32), Tmp2, 75352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(3)); 7545d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } else { 7555d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner assert(CFP->getValueType(0) == MVT::f64 && "Unknown FP type!"); 7565d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner union { 7575d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner uint64_t I; 7585d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner double F; 7595d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } V; 7605d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner V.F = CFP->getValue(); 7612d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, 76252d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner DAG.getConstant(V.I, MVT::i64), Tmp2, 76352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(3)); 7645d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } 76584734ce8ef1a21eb347d4deca0bf32d59001f751Chris Lattner Node = Result.Val; 7665d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } 7675d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner 7683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 7693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: { 7703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Val = LegalizeOp(Node->getOperand(1)); 7713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Val != Node->getOperand(1) || Tmp1 != Node->getOperand(0) || 7723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(2)) 77352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Val, Tmp2, 77452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(3)); 7753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 77803c8546ec57523970874917854a2fb77b1ff598eChris Lattner // Truncate the value and store the result. 77903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp3 = PromoteOp(Node->getOperand(1)); 78003c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Tmp1, Tmp3, Tmp2, 7812d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Node->getOperand(3), 7829fadb4c1c0a6d223aa468f9f72f8c2562dc66839Chris Lattner DAG.getValueType(Node->getOperand(1).getValueType())); 78303c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 78403c8546ec57523970874917854a2fb77b1ff598eChris Lattner 7853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: 7863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 7873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 7883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 7893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!TLI.isLittleEndian()) 7903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::swap(Lo, Hi); 7913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 792edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Lo = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Lo, Tmp2, 793edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Node->getOperand(3)); 794ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner unsigned IncrementSize = MVT::getSizeInBits(Hi.getValueType())/8; 7953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getNode(ISD::ADD, Tmp2.getValueType(), Tmp2, 7963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner getIntPtrConstant(IncrementSize)); 7973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(Tmp2.getValueType()) && 7983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Pointers must be legal!"); 7992d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth //Again, claiming both parts of the store came form the same Instr 800edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Hi = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Hi, Tmp2, 801edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Node->getOperand(3)); 802ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 803ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner break; 8043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 8053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 80695762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth case ISD::PCMARKER: 80795762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 8082c8086f4b9916b2d02842be5e375276023225fbaChris Lattner if (Tmp1 != Node->getOperand(0)) 8092c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = DAG.getNode(ISD::PCMARKER, MVT::Other, Tmp1,Node->getOperand(1)); 81095762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth break; 8110f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::TRUNCSTORE: 8120f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 8130f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. 8140f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 8150f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 8160f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Legal: 8170f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 8180f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 8190f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp3 != Node->getOperand(2)) 82045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Tmp1, Tmp2, Tmp3, 8219fadb4c1c0a6d223aa468f9f72f8c2562dc66839Chris Lattner Node->getOperand(3), Node->getOperand(4)); 8220f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 8230f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Promote: 8240f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Expand: 8250f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner assert(0 && "Cannot handle illegal TRUNCSTORE yet!"); 8260f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner } 8270f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 8282ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner case ISD::SELECT: 82947e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 83047e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 83147e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 83247e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the condition. 83347e9223e06390897c3834f8c527001df392570ffChris Lattner break; 83447e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 83547e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // Promote the condition. 83647e9223e06390897c3834f8c527001df392570ffChris Lattner break; 83747e9223e06390897c3834f8c527001df392570ffChris Lattner } 8383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // TrueVal 8392ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // FalseVal 84055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner 84155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), Tmp2.getValueType())) { 84255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action is not supported yet!"); 84355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 84455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 84555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp3 != Node->getOperand(2)) 84655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(ISD::SELECT, Node->getValueType(0), 84755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp1, Tmp2, Tmp3); 84855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 84955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Promote: { 85055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner MVT::ValueType NVT = 85155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TLI.getTypeToPromoteTo(ISD::SELECT, Tmp2.getValueType()); 85255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner unsigned ExtOp, TruncOp; 85355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (MVT::isInteger(Tmp2.getValueType())) { 85455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtOp = ISD::ZERO_EXTEND; 85555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TruncOp = ISD::TRUNCATE; 85655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } else { 85755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtOp = ISD::FP_EXTEND; 85855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TruncOp = ISD::FP_ROUND; 85955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 86055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner // Promote each of the values to the new type. 86155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp2 = DAG.getNode(ExtOp, NVT, Tmp2); 86255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp3 = DAG.getNode(ExtOp, NVT, Tmp3); 86355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner // Perform the larger operation, then round down. 86455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(ISD::SELECT, NVT, Tmp1, Tmp2,Tmp3); 86555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(TruncOp, Node->getValueType(0), Result); 86655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 86755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 86855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 8693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 8703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETCC: 8713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 8723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 8733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 8743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 8753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 8763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 877f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, Tmp2); 8783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 8793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 8808b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // LHS 8818b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // RHS 8828b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 8838b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // If this is an FP compare, the operands have already been extended. 8848b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isInteger(Node->getOperand(0).getValueType())) { 8858b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner MVT::ValueType VT = Node->getOperand(0).getValueType(); 88671c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 8878b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 8888b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Otherwise, we have to insert explicit sign or zero extends. Note 8898b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // that we could insert sign extends for ALL conditions, but zero extend 8908b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // is cheaper on many machines (an AND instead of two shifts), so prefer 8918b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // it. 8928b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 8938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner default: assert(0 && "Unknown integer comparison!"); 8948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETEQ: 8958b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETNE: 8968b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETUGE: 8978b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETUGT: 8988b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETULE: 8998b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETULT: 9008b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // ALL of these operations will work if we either sign or zero extend 9018b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // the operands (including the unsigned comparisons!). Zero extend is 9028b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // usually a simpler/cheaper operation, so prefer it. 90323993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp1 = DAG.getZeroExtendInReg(Tmp1, VT); 90423993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp2 = DAG.getZeroExtendInReg(Tmp2, VT); 9058b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 9068b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETGE: 9078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETGT: 9088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETLT: 9098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETLE: 91015e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, 91115e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 91215e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2, 91315e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 9148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 9158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 9168b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 9178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 9188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 919f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, Tmp2); 9203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 921edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman case Expand: 9223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LHSLo, LHSHi, RHSLo, RHSHi; 9233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), LHSLo, LHSHi); 9243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), RHSLo, RHSHi); 9253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 9263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETEQ: 9273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETNE: 92808b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner if (RHSLo == RHSHi) 92908b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner if (ConstantSDNode *RHSCST = dyn_cast<ConstantSDNode>(RHSLo)) 93008b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner if (RHSCST->isAllOnesValue()) { 93108b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner // Comparison to -1. 93208b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner Tmp1 = DAG.getNode(ISD::AND, LHSLo.getValueType(), LHSLo, LHSHi); 933edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 93408b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner Node->getValueType(0), Tmp1, RHSLo); 935edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman break; 93608b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner } 93708b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner 9383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSLo, RHSLo); 9393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSHi, RHSHi); 9403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = DAG.getNode(ISD::OR, Tmp1.getValueType(), Tmp1, Tmp2); 941edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 942f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, 9433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner DAG.getConstant(0, Tmp1.getValueType())); 9443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 9453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 9465b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner // If this is a comparison of the sign bit, just look at the top part. 9475b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner // X > -1, x < 0 9485b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner if (ConstantSDNode *CST = dyn_cast<ConstantSDNode>(Node->getOperand(1))) 949edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman if ((cast<SetCCSDNode>(Node)->getCondition() == ISD::SETLT && 9505b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner CST->getValue() == 0) || // X < 0 9515b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner (cast<SetCCSDNode>(Node)->getCondition() == ISD::SETGT && 9525b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner (CST->isAllOnesValue()))) // X > -1 9535b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner return DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 9545b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner Node->getValueType(0), LHSHi, RHSHi); 9555b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner 9563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // FIXME: This generated code sucks. 9573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ISD::CondCode LowCC; 9583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 9593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: assert(0 && "Unknown integer setcc!"); 9603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETLT: 9613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 9623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETGT: 9633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 9643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETLE: 9653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 9663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETGE: 9673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 9683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 969edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 9703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 9713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 9723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 9733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 9743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 9753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 976f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Tmp1 = DAG.getSetCC(LowCC, Node->getValueType(0), LHSLo, RHSLo); 9773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 978f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), LHSHi, RHSHi); 979f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getSetCC(ISD::SETEQ, Node->getValueType(0), LHSHi, RHSHi); 980f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getNode(ISD::SELECT, Tmp1.getValueType(), 981f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result, Tmp1, Tmp2); 9823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 9833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 9843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 9853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 9863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 987e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMSET: 988e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMCPY: 989e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMMOVE: { 990deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Chain 991e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Pointer 992e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner 993e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner if (Node->getOpcode() == ISD::MEMSET) { // memset = ubyte 994e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner switch (getTypeAction(Node->getOperand(2).getValueType())) { 995e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Expand: assert(0 && "Cannot expand a byte!"); 996e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Legal: 997deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); 998e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 999e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Promote: 1000deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp3 = PromoteOp(Node->getOperand(2)); 1001e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 1002e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 1003e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } else { 1004edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Tmp3 = LegalizeOp(Node->getOperand(2)); // memcpy/move = pointer, 1005e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 1006272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner 1007272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner SDOperand Tmp4; 1008272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner switch (getTypeAction(Node->getOperand(3).getValueType())) { 10096814f1522dd7cdeb4674a9ad199f482a2e7aaea1Chris Lattner case Expand: { 10106814f1522dd7cdeb4674a9ad199f482a2e7aaea1Chris Lattner // Length is too big, just take the lo-part of the length. 10116814f1522dd7cdeb4674a9ad199f482a2e7aaea1Chris Lattner SDOperand HiPart; 10126814f1522dd7cdeb4674a9ad199f482a2e7aaea1Chris Lattner ExpandOp(Node->getOperand(3), HiPart, Tmp4); 10136814f1522dd7cdeb4674a9ad199f482a2e7aaea1Chris Lattner break; 10146814f1522dd7cdeb4674a9ad199f482a2e7aaea1Chris Lattner } 1015e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Legal: 1016e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp4 = LegalizeOp(Node->getOperand(3)); 1017e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 1018e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Promote: 1019e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp4 = PromoteOp(Node->getOperand(3)); 1020272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner break; 1021272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner } 1022272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner 1023272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner SDOperand Tmp5; 1024272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner switch (getTypeAction(Node->getOperand(4).getValueType())) { // uint 1025272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Expand: assert(0 && "Cannot expand this yet!"); 1026272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Legal: 1027272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner Tmp5 = LegalizeOp(Node->getOperand(4)); 1028272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner break; 1029272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Promote: 1030e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp5 = PromoteOp(Node->getOperand(4)); 1031e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 1032e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 103355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner 103455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), MVT::Other)) { 103555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action not implemented for this operation!"); 103655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 1037e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 1038e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 != Node->getOperand(2) || Tmp4 != Node->getOperand(3) || 1039e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp5 != Node->getOperand(4)) { 1040e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::vector<SDOperand> Ops; 1041e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 1042e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Ops.push_back(Tmp4); Ops.push_back(Tmp5); 1043e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Ops); 1044e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 104555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 104655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Expand: { 1047e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // Otherwise, the target does not support this operation. Lower the 1048e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // operation to an explicit libcall as appropriate. 1049e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner MVT::ValueType IntPtr = TLI.getPointerTy(); 1050e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner const Type *IntPtrTy = TLI.getTargetData().getIntPtrType(); 1051e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::vector<std::pair<SDOperand, const Type*> > Args; 1052e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner 10533bfbf4ea990930d153e58e153f319408341a94feReid Spencer const char *FnName = 0; 1054e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (Node->getOpcode() == ISD::MEMSET) { 1055e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp2, IntPtrTy)); 1056e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // Extend the ubyte argument to be an int value for the call. 1057e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 = DAG.getNode(ISD::ZERO_EXTEND, MVT::i32, Tmp3); 1058e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp3, Type::IntTy)); 1059e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp4, IntPtrTy)); 1060e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner 1061e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner FnName = "memset"; 1062e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } else if (Node->getOpcode() == ISD::MEMCPY || 1063e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Node->getOpcode() == ISD::MEMMOVE) { 1064e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp2, IntPtrTy)); 1065e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp3, IntPtrTy)); 1066e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp4, IntPtrTy)); 1067e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner FnName = Node->getOpcode() == ISD::MEMMOVE ? "memmove" : "memcpy"; 1068e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } else { 1069e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner assert(0 && "Unknown op!"); 1070e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 107145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner 1072e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::pair<SDOperand,SDOperand> CallResult = 1073adf6a965a321372c640845407195594835921eb4Chris Lattner TLI.LowerCallTo(Tmp1, Type::VoidTy, false, CallingConv::C, false, 1074e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner DAG.getExternalSymbol(FnName, IntPtr), Args, DAG); 1075c087a435109cdc943da094a21371f7d66d5b0e54Chris Lattner Result = CallResult.second; 1076c087a435109cdc943da094a21371f7d66d5b0e54Chris Lattner NeedsAnotherIteration = true; 107755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 107855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 107955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Custom: 108055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner std::vector<SDOperand> Ops; 108155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 108255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Ops.push_back(Tmp4); Ops.push_back(Tmp5); 108355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Ops); 108450381b6c4180e9a2b983d4623da2e485cd768632Chris Lattner Result = TLI.LowerOperation(Result, DAG); 108555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = LegalizeOp(Result); 108655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 1087e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 1088e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner break; 1089e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 109052d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner 109152d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner case ISD::READPORT: 109252d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 109352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 10946d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 10953e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) { 10963e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), Node->value_end()); 10973e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner std::vector<SDOperand> Ops; 10983e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Ops.push_back(Tmp1); 10993e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Ops.push_back(Tmp2); 11003e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Result = DAG.getNode(ISD::READPORT, VTs, Ops); 11013e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner } else 110252d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = SDOperand(Node, 0); 110352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner // Since these produce two values, make sure to remember that we legalized 110452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner // both of them. 110552d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 110652d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 110752d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner return Result.getValue(Op.ResNo); 110852d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner case ISD::WRITEPORT: 110952d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 111052d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 111152d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); 111252d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 111352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp3 != Node->getOperand(2)) 111452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Tmp1, Tmp2, Tmp3); 111552d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner break; 111652d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner 11176d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case ISD::READIO: 11186d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 11196d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 11206d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 11216d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) { 11226d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Custom: 11236d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner default: assert(0 && "This action not implemented for this operation!"); 11246d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Legal: 11253e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) { 11263e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), Node->value_end()); 11273e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner std::vector<SDOperand> Ops; 11283e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Ops.push_back(Tmp1); 11293e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Ops.push_back(Tmp2); 11303e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Result = DAG.getNode(ISD::READPORT, VTs, Ops); 11313e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner } else 11326d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = SDOperand(Node, 0); 11336d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 11346d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Expand: 11356d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner // Replace this with a load from memory. 11366d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = DAG.getLoad(Node->getValueType(0), Node->getOperand(0), 11376d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Node->getOperand(1), DAG.getSrcValue(NULL)); 11386d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = LegalizeOp(Result); 11396d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 11406d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner } 11416d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 11426d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner // Since these produce two values, make sure to remember that we legalized 11436d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner // both of them. 11446d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 11456d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 11466d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner return Result.getValue(Op.ResNo); 11476d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 11486d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case ISD::WRITEIO: 11496d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 11506d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 11516d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); 11526d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 11536d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), 11546d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Node->getOperand(1).getValueType())) { 11556d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Custom: 11566d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner default: assert(0 && "This action not implemented for this operation!"); 11576d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Legal: 11586d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 11596d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp3 != Node->getOperand(2)) 11606d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Tmp1, Tmp2, Tmp3); 11616d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 11626d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Expand: 11636d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner // Replace this with a store to memory. 11646d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Node->getOperand(0), 11656d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Node->getOperand(1), Node->getOperand(2), 11666d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner DAG.getSrcValue(NULL)); 11676d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = LegalizeOp(Result); 11686d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 11696d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner } 11706d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 11716d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 117284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::ADD_PARTS: 11735b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner case ISD::SUB_PARTS: 11745b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner case ISD::SHL_PARTS: 11755b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner case ISD::SRA_PARTS: 11765b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner case ISD::SRL_PARTS: { 117784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner std::vector<SDOperand> Ops; 117884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner bool Changed = false; 117984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 118084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 118184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 118284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner } 1183e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (Changed) { 1184e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), Node->value_end()); 1185e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Result = DAG.getNode(Node->getOpcode(), VTs, Ops); 1186e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner } 11872c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 11882c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Since these produce multiple values, make sure to remember that we 11892c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // legalized all of them. 11902c8086f4b9916b2d02842be5e375276023225fbaChris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 11912c8086f4b9916b2d02842be5e375276023225fbaChris Lattner AddLegalizedOperand(SDOperand(Node, i), Result.getValue(i)); 11922c8086f4b9916b2d02842be5e375276023225fbaChris Lattner return Result.getValue(Op.ResNo); 119384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner } 11942c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 11952c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Binary operators 11963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ADD: 11973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SUB: 11983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::MUL: 1199c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman case ISD::MULHS: 1200c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman case ISD::MULHU: 12013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::UDIV: 12023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SDIV: 12033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::AND: 12043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::OR: 12053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::XOR: 120603c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SHL: 120703c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SRL: 120803c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SRA: 12093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 1210f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth switch (getTypeAction(Node->getOperand(1).getValueType())) { 1211f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth case Expand: assert(0 && "Not possible"); 1212f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth case Legal: 1213f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the RHS. 1214f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth break; 1215f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth case Promote: 1216f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth Tmp2 = PromoteOp(Node->getOperand(1)); // Promote the RHS. 1217f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth break; 1218f2eb1396b8fe7b5b1c4bd5f27903209cfa4d20aeAndrew Lenharth } 12193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || 12203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(1)) 12213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1,Tmp2); 12223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1223edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 1224c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case ISD::UREM: 1225c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case ISD::SREM: 1226c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 1227c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 1228c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) { 1229c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case TargetLowering::Legal: 1230c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman if (Tmp1 != Node->getOperand(0) || 1231c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Tmp2 != Node->getOperand(1)) 1232edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, 1233c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Tmp2); 1234c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman break; 1235c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case TargetLowering::Promote: 1236c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case TargetLowering::Custom: 1237c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman assert(0 && "Cannot promote/custom handle this yet!"); 1238c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case TargetLowering::Expand: { 1239c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman MVT::ValueType VT = Node->getValueType(0); 1240c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman unsigned Opc = (Node->getOpcode() == ISD::UREM) ? ISD::UDIV : ISD::SDIV; 1241c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Result = DAG.getNode(Opc, VT, Tmp1, Tmp2); 1242c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Result = DAG.getNode(ISD::MUL, VT, Result, Tmp2); 1243c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Result = DAG.getNode(ISD::SUB, VT, Tmp1, Result); 1244c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman } 1245c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman break; 1246c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman } 1247c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman break; 12482c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 1249691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTPOP: 1250691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTTZ: 1251691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTLZ: 1252691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Tmp1 = LegalizeOp(Node->getOperand(0)); // Op 1253691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) { 1254691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case TargetLowering::Legal: 1255691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth if (Tmp1 != Node->getOperand(0)) 1256691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 1257691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1258691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case TargetLowering::Promote: { 1259691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth MVT::ValueType OVT = Tmp1.getValueType(); 1260691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth MVT::ValueType NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 1261edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner 1262edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner // Zero extend the argument. 1263691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, NVT, Tmp1); 1264691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth // Perform the larger operation, then subtract if needed. 1265691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Tmp1 = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 1266691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth switch(Node->getOpcode()) 1267691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth { 1268691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTPOP: 1269691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Result = Tmp1; 1270691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1271691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTTZ: 1272691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 127339a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Tmp2 = DAG.getSetCC(ISD::SETEQ, TLI.getSetCCResultTy(), Tmp1, 1274691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth DAG.getConstant(getSizeInBits(NVT), NVT)); 1275691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Result = DAG.getNode(ISD::SELECT, NVT, Tmp2, 1276691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth DAG.getConstant(getSizeInBits(OVT),NVT), Tmp1); 1277691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1278691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTLZ: 1279691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth //Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 1280691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Result = DAG.getNode(ISD::SUB, NVT, Tmp1, 1281691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth DAG.getConstant(getSizeInBits(NVT) - 1282691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth getSizeInBits(OVT), NVT)); 1283691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1284691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth } 1285691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1286691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth } 1287691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case TargetLowering::Custom: 1288691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth assert(0 && "Cannot custom handle this yet!"); 1289691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case TargetLowering::Expand: 1290ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth switch(Node->getOpcode()) 1291ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth { 1292ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth case ISD::CTPOP: { 1293e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner static const uint64_t mask[6] = { 1294e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 1295e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 1296e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 1297e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner }; 1298ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth MVT::ValueType VT = Tmp1.getValueType(); 1299e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner MVT::ValueType ShVT = TLI.getShiftAmountTy(); 1300e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner unsigned len = getSizeInBits(VT); 1301e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 1302ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 1303e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner Tmp2 = DAG.getConstant(mask[i], VT); 1304e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner Tmp3 = DAG.getConstant(1ULL << i, ShVT); 1305ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth Tmp1 = DAG.getNode(ISD::ADD, VT, 1306ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth DAG.getNode(ISD::AND, VT, Tmp1, Tmp2), 1307ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth DAG.getNode(ISD::AND, VT, 1308ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth DAG.getNode(ISD::SRL, VT, Tmp1, Tmp3), 1309ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth Tmp2)); 1310ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth } 1311ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth Result = Tmp1; 1312ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth break; 1313ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth } 131457ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina case ISD::CTLZ: { 131557ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina /* for now, we do this: 13165c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner x = x | (x >> 1); 13175c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner x = x | (x >> 2); 13185c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner ... 13195c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner x = x | (x >>16); 13205c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner x = x | (x >>32); // for 64-bit input 13215c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner return popcount(~x); 132257ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina 13235c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner but see also: http://www.hackersdelight.org/HDcode/nlz.cc */ 13245c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner MVT::ValueType VT = Tmp1.getValueType(); 132557ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina MVT::ValueType ShVT = TLI.getShiftAmountTy(); 132657ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina unsigned len = getSizeInBits(VT); 132757ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 132857ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina Tmp3 = DAG.getConstant(1ULL << i, ShVT); 132957ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina Tmp1 = DAG.getNode(ISD::OR, VT, Tmp1, 133057ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina DAG.getNode(ISD::SRL, VT, Tmp1, Tmp3)); 133157ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina } 133257ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina Tmp3 = DAG.getNode(ISD::XOR, VT, Tmp1, DAG.getConstant(~0ULL, VT)); 13335c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner Result = LegalizeOp(DAG.getNode(ISD::CTPOP, VT, Tmp3)); 133418aa680a96c49cf9e28b52f5ab3f2c4f98793636Chris Lattner break; 133557ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina } 133657ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina case ISD::CTTZ: { 1337d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // for now, we use: { return popcount(~x & (x - 1)); } 1338d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // unless the target has ctlz but not ctpop, in which case we use: 1339d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // { return 32 - nlz(~x & (x-1)); } 1340d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // see also http://www.hackersdelight.org/HDcode/ntz.cc 13415c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner MVT::ValueType VT = Tmp1.getValueType(); 13425c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner Tmp2 = DAG.getConstant(~0ULL, VT); 13435c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner Tmp3 = DAG.getNode(ISD::AND, VT, 13445c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner DAG.getNode(ISD::XOR, VT, Tmp1, Tmp2), 13455c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner DAG.getNode(ISD::SUB, VT, Tmp1, 13465c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner DAG.getConstant(1, VT))); 1347d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // If ISD::CTLZ is legal and CTPOP isn't, then do that instead 1348d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman if (TLI.getOperationAction(ISD::CTPOP, VT) != TargetLowering::Legal && 1349d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman TLI.getOperationAction(ISD::CTLZ, VT) == TargetLowering::Legal) { 1350d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman Result = LegalizeOp(DAG.getNode(ISD::SUB, VT, 1351d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman DAG.getConstant(getSizeInBits(VT), VT), 1352d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman DAG.getNode(ISD::CTLZ, VT, Tmp3))); 1353d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman } else { 1354d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman Result = LegalizeOp(DAG.getNode(ISD::CTPOP, VT, Tmp3)); 1355d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman } 135618aa680a96c49cf9e28b52f5ab3f2c4f98793636Chris Lattner break; 135757ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina } 1358ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth default: 1359ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth assert(0 && "Cannot expand this yet!"); 1360ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth break; 1361ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth } 1362691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1363691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth } 1364691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1365691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 13662c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Unary operators 13672c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case ISD::FABS: 13682c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case ISD::FNEG: 1369da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FSQRT: 1370da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FSIN: 1371da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FCOS: 13722c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 13732c8086f4b9916b2d02842be5e375276023225fbaChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) { 13742c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case TargetLowering::Legal: 13752c8086f4b9916b2d02842be5e375276023225fbaChris Lattner if (Tmp1 != Node->getOperand(0)) 13762c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 13772c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 13782c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case TargetLowering::Promote: 13792c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case TargetLowering::Custom: 13802c8086f4b9916b2d02842be5e375276023225fbaChris Lattner assert(0 && "Cannot promote/custom handle this yet!"); 13812c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case TargetLowering::Expand: 1382f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner switch(Node->getOpcode()) { 1383f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FNEG: { 13842c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Expand Y = FNEG(X) -> Y = SUB -0.0, X 13852c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Tmp2 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 13862c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = LegalizeOp(DAG.getNode(ISD::SUB, Node->getValueType(0), 13872c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Tmp2, Tmp1)); 1388f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner break; 1389f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner } 1390f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FABS: { 13914af6e0d7836126630f579b0a34f054321187f00bChris Lattner // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 13924af6e0d7836126630f579b0a34f054321187f00bChris Lattner MVT::ValueType VT = Node->getValueType(0); 13934af6e0d7836126630f579b0a34f054321187f00bChris Lattner Tmp2 = DAG.getConstantFP(0.0, VT); 13944af6e0d7836126630f579b0a34f054321187f00bChris Lattner Tmp2 = DAG.getSetCC(ISD::SETUGT, TLI.getSetCCResultTy(), Tmp1, Tmp2); 13954af6e0d7836126630f579b0a34f054321187f00bChris Lattner Tmp3 = DAG.getNode(ISD::FNEG, VT, Tmp1); 13964af6e0d7836126630f579b0a34f054321187f00bChris Lattner Result = DAG.getNode(ISD::SELECT, VT, Tmp2, Tmp1, Tmp3); 13974af6e0d7836126630f579b0a34f054321187f00bChris Lattner Result = LegalizeOp(Result); 1398f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner break; 1399f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner } 1400f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FSQRT: 1401f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FSIN: 1402f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FCOS: { 1403f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner MVT::ValueType VT = Node->getValueType(0); 1404f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner Type *T = VT == MVT::f32 ? Type::FloatTy : Type::DoubleTy; 1405f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner const char *FnName = 0; 1406f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner switch(Node->getOpcode()) { 1407f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FSQRT: FnName = VT == MVT::f32 ? "sqrtf" : "sqrt"; break; 1408f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FSIN: FnName = VT == MVT::f32 ? "sinf" : "sin"; break; 1409f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FCOS: FnName = VT == MVT::f32 ? "cosf" : "cos"; break; 1410f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner default: assert(0 && "Unreachable!"); 1411f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner } 1412f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner std::vector<std::pair<SDOperand, const Type*> > Args; 1413f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner Args.push_back(std::make_pair(Tmp1, T)); 14140d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // FIXME: should use ExpandLibCall! 1415f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner std::pair<SDOperand,SDOperand> CallResult = 1416adf6a965a321372c640845407195594835921eb4Chris Lattner TLI.LowerCallTo(DAG.getEntryNode(), T, false, CallingConv::C, true, 1417f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner DAG.getExternalSymbol(FnName, VT), Args, DAG); 1418f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner Result = LegalizeOp(CallResult.first); 1419f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner break; 1420f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner } 1421f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner default: 14224af6e0d7836126630f579b0a34f054321187f00bChris Lattner assert(0 && "Unreachable!"); 14232c8086f4b9916b2d02842be5e375276023225fbaChris Lattner } 14242c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 14252c8086f4b9916b2d02842be5e375276023225fbaChris Lattner } 14262c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 14272c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 14282c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Conversion operators. The source and destination have different types. 14293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ZERO_EXTEND: 14303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SIGN_EXTEND: 14317cc4777a263f6a52877d29201311fde5f6edb632Chris Lattner case ISD::TRUNCATE: 143203c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::FP_EXTEND: 143303c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::FP_ROUND: 1434ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::FP_TO_SINT: 1435ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::FP_TO_UINT: 1436ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::SINT_TO_FP: 1437ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::UINT_TO_FP: 14383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 14393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 1440f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth //still made need to expand if the op is illegal, but the types are legal 1441cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner if (Node->getOpcode() == ISD::UINT_TO_FP) { 1442cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), 1443cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner Node->getOperand(0).getValueType())) { 1444cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner default: assert(0 && "Unknown operation action!"); 1445cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner case TargetLowering::Expand: 1446cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner Result = ExpandLegalUINT_TO_FP(LegalizeOp(Node->getOperand(0)), 1447cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner Node->getValueType(0)); 1448cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner AddLegalizedOperand(Op, Result); 1449cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner return Result; 1450cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner case TargetLowering::Promote: 1451cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner Result = PromoteLegalUINT_TO_FP(LegalizeOp(Node->getOperand(0)), 1452cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner Node->getValueType(0)); 1453cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner AddLegalizedOperand(Op, Result); 1454cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner return Result; 1455cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner case TargetLowering::Legal: 1456cad063f1a8ecda4fd556a733dc5eaa8a96acb80dChris Lattner break; 1457f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth } 1458f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth } 14593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 14603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 14613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 14623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1463b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner case Expand: 146477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (Node->getOpcode() == ISD::SINT_TO_FP || 146577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getOpcode() == ISD::UINT_TO_FP) { 146677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, 146777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getValueType(0), Node->getOperand(0)); 146877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner break; 14692c8086f4b9916b2d02842be5e375276023225fbaChris Lattner } else if (Node->getOpcode() == ISD::TRUNCATE) { 14702c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // In the expand case, we must be dealing with a truncate, because 14712c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // otherwise the result would be larger than the source. 14722c8086f4b9916b2d02842be5e375276023225fbaChris Lattner ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 1473edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 14742c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Since the result is legal, we should just be able to truncate the low 14752c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // part of the source. 14762c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = DAG.getNode(ISD::TRUNCATE, Node->getValueType(0), Tmp1); 14772c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 147877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 14792c8086f4b9916b2d02842be5e375276023225fbaChris Lattner assert(0 && "Shouldn't need to expand other operators here!"); 1480b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner 148103c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Promote: 148203c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (Node->getOpcode()) { 14831713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner case ISD::ZERO_EXTEND: 14841713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 148547e9223e06390897c3834f8c527001df392570ffChris Lattner // NOTE: Any extend would work here... 148647e9223e06390897c3834f8c527001df392570ffChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, Op.getValueType(), Result); 148723993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result = DAG.getZeroExtendInReg(Result, 148823993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Node->getOperand(0).getValueType()); 148903c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 149003c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SIGN_EXTEND: 14911713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 149247e9223e06390897c3834f8c527001df392570ffChris Lattner // NOTE: Any extend would work here... 1493d5d56825123665b60d4eada0a4ad7d0adc5cf3a3Chris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, Op.getValueType(), Result); 14941713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 149515e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result, 149615e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(Node->getOperand(0).getValueType())); 14971713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 149803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::TRUNCATE: 14991713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 15001713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::TRUNCATE, Op.getValueType(), Result); 15011713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 150203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_EXTEND: 15031713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 15041713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner if (Result.getValueType() != Op.getValueType()) 15051713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner // Dynamically dead while we have only 2 FP types. 15061713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::FP_EXTEND, Op.getValueType(), Result); 15071713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 150803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_ROUND: 150903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_TO_SINT: 151003c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_TO_UINT: 1511f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 1512f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(Node->getOpcode(), Op.getValueType(), Result); 1513f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 151403c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SINT_TO_FP: 1515f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 1516f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 151715e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result, 151815e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(Node->getOperand(0).getValueType())); 1519f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::SINT_TO_FP, Op.getValueType(), Result); 1520f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 152103c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::UINT_TO_FP: 1522f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 152323993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result = DAG.getZeroExtendInReg(Result, 152423993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Node->getOperand(0).getValueType()); 1525f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::UINT_TO_FP, Op.getValueType(), Result); 1526f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 152703c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 15283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 15300f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::FP_ROUND_INREG: 153123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner case ISD::SIGN_EXTEND_INREG: { 15320f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 153315e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner MVT::ValueType ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 153445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner 153545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // If this operation is not supported, convert it to a shl/shr or load/store 153645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // pair. 153755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), ExtraVT)) { 153855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action not supported for this op yet!"); 153955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 154055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (Tmp1 != Node->getOperand(0)) 154155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, 15425f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner DAG.getValueType(ExtraVT)); 154355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 154455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Expand: 154545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // If this is an integer extend and shifts are supported, do that. 154623993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner if (Node->getOpcode() == ISD::SIGN_EXTEND_INREG) { 154745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: we could fall back on load/store here too for targets without 154845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // SAR. However, it is doubtful that any exist. 154945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned BitsDiff = MVT::getSizeInBits(Node->getValueType(0)) - 155045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MVT::getSizeInBits(ExtraVT); 155127ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner SDOperand ShiftCst = DAG.getConstant(BitsDiff, TLI.getShiftAmountTy()); 155245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::SHL, Node->getValueType(0), 155345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getOperand(0), ShiftCst); 155445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::SRA, Node->getValueType(0), 155545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result, ShiftCst); 155645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else if (Node->getOpcode() == ISD::FP_ROUND_INREG) { 155745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // The only way we can lower this is to turn it into a STORETRUNC, 155845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // EXTLOAD pair, targetting a temporary location (a stack slot). 155945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner 156045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: there is a choice here between constantly creating new stack 156145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // slots and always reusing the same one. We currently always create 156245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // new ones, as reuse may inhibit scheduling. 156345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner const Type *Ty = MVT::getTypeForValueType(ExtraVT); 156445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned TySize = (unsigned)TLI.getTargetData().getTypeSize(Ty); 156545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned Align = TLI.getTargetData().getTypeAlignment(Ty); 156645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MachineFunction &MF = DAG.getMachineFunction(); 1567edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman int SSFI = 156845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MF.getFrameInfo()->CreateStackObject((unsigned)TySize, Align); 156945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner SDOperand StackSlot = DAG.getFrameIndex(SSFI, TLI.getPointerTy()); 157045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, DAG.getEntryNode(), 157152d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(0), StackSlot, 15729fadb4c1c0a6d223aa468f9f72f8c2562dc66839Chris Lattner DAG.getSrcValue(NULL), DAG.getValueType(ExtraVT)); 15735f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Result = DAG.getExtLoad(ISD::EXTLOAD, Node->getValueType(0), 15745f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Result, StackSlot, DAG.getSrcValue(NULL), 15755f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner ExtraVT); 157645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else { 157745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner assert(0 && "Unknown op"); 157845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 157945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = LegalizeOp(Result); 158055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 158145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 15820f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 15833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 158445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 15853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 158645982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 158745982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 158845982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 15893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 15903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15928b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// PromoteOp - Given an operation that produces a value in an invalid type, 15938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// promote it to compute the value into a larger type. The produced value will 15948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// have the correct bits for the low portion of the register, but no guarantee 15958b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// is made about the top bits: it may be zero, sign-extended, or garbage. 159603c8546ec57523970874917854a2fb77b1ff598eChris LattnerSDOperand SelectionDAGLegalize::PromoteOp(SDOperand Op) { 159703c8546ec57523970874917854a2fb77b1ff598eChris Lattner MVT::ValueType VT = Op.getValueType(); 159871c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 159903c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(getTypeAction(VT) == Promote && 160003c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Caller should expand or legalize operands that are not promotable!"); 160103c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(NVT > VT && MVT::isInteger(NVT) == MVT::isInteger(VT) && 160203c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Cannot promote to smaller type!"); 160303c8546ec57523970874917854a2fb77b1ff598eChris Lattner 160403c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand Tmp1, Tmp2, Tmp3; 160503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 160603c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand Result; 160703c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDNode *Node = Op.Val; 160803c8546ec57523970874917854a2fb77b1ff598eChris Lattner 160945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (!Node->hasOneUse()) { 161045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner std::map<SDOperand, SDOperand>::iterator I = PromotedNodes.find(Op); 161145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (I != PromotedNodes.end()) return I->second; 161245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner } else { 161345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner assert(!PromotedNodes.count(Op) && "Repromoted this node??"); 161445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner } 161545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner 16160f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // Promotion needs an optimization step to clean up after it, and is not 16170f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // careful to avoid operations the target does not support. Make sure that 16180f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // all generated operations are legalized in the next iteration. 16190f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner NeedsAnotherIteration = true; 16200f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 162103c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (Node->getOpcode()) { 162203c8546ec57523970874917854a2fb77b1ff598eChris Lattner default: 162303c8546ec57523970874917854a2fb77b1ff598eChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 162403c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(0 && "Do not know how to promote this operator!"); 162503c8546ec57523970874917854a2fb77b1ff598eChris Lattner abort(); 1626fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: 1627fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getNode(ISD::UNDEF, NVT); 1628fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 162903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::Constant: 163003c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, NVT, Op); 163103c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isa<ConstantSDNode>(Result) && "Didn't constant fold zext?"); 163203c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 163303c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::ConstantFP: 163403c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::FP_EXTEND, NVT, Op); 163503c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isa<ConstantFPSDNode>(Result) && "Didn't constant fold fp_extend?"); 163603c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 1637ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case ISD::CopyFromReg: 1638ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Result = DAG.getCopyFromReg(cast<RegSDNode>(Node)->getReg(), NVT, 1639ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Node->getOperand(0)); 1640ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner // Remember that we legalized the chain. 1641ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1642ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner break; 1643ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner 164482fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner case ISD::SETCC: 164582fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner assert(getTypeAction(TLI.getSetCCResultTy()) == Legal && 164682fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner "SetCC type is not legal??"); 164782fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 164882fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner TLI.getSetCCResultTy(), Node->getOperand(0), 164982fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Node->getOperand(1)); 165082fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Result = LegalizeOp(Result); 165182fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner break; 165203c8546ec57523970874917854a2fb77b1ff598eChris Lattner 165303c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::TRUNCATE: 165403c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 165503c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Legal: 165603c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = LegalizeOp(Node->getOperand(0)); 165703c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(Result.getValueType() >= NVT && 165803c8546ec57523970874917854a2fb77b1ff598eChris Lattner "This truncation doesn't make sense!"); 165903c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (Result.getValueType() > NVT) // Truncate to NVT instead of VT 166003c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::TRUNCATE, NVT, Result); 166103c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 1662e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner case Promote: 1663e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner // The truncation is not required, because we don't guarantee anything 1664e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner // about high bits anyway. 1665e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner Result = PromoteOp(Node->getOperand(0)); 1666e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner break; 166703c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Expand: 166879e46acd35df36477029e9f534ab1a366a98df56Nate Begeman ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 166979e46acd35df36477029e9f534ab1a366a98df56Nate Begeman // Truncate the low part of the expanded value to the result type 1670edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Result = DAG.getNode(ISD::TRUNCATE, VT, Tmp1); 167103c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 167203c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 16738b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SIGN_EXTEND: 16748b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::ZERO_EXTEND: 16758b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 16768b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: assert(0 && "BUG: Smaller reg should have been promoted!"); 16778b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 16788b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Input is legal? Just do extend all the way to the larger type. 16798b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 16808b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 16818b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16828b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 16838b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Promote the reg if it's smaller. 16848b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = PromoteOp(Node->getOperand(0)); 16858b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The high bits are not guaranteed to be anything. Insert an extend. 16868b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (Node->getOpcode() == ISD::SIGN_EXTEND) 1687595dc5408ad809b9a9a417db275c43242e54b8dcChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Result, 168815e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(Node->getOperand(0).getValueType())); 16898b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner else 169023993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result = DAG.getZeroExtendInReg(Result, 169123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Node->getOperand(0).getValueType()); 16928b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 16948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16958b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 16968b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_EXTEND: 16978b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "Case not implemented. Dynamically dead with 2 FP types!"); 16988b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_ROUND: 16998b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 17008b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: assert(0 && "BUG: Cannot expand FP regs!"); 17018b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: assert(0 && "Unreachable with 2 FP types!"); 17028b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 17038b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Input is legal? Do an FP_ROUND_INREG. 17048b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 170515e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, 170615e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 17078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 17098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 17118b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SINT_TO_FP: 17128b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UINT_TO_FP: 17138b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 17148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 17158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 171677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // No extra round required here. 171777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 17188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17198b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 17208b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 17218b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = PromoteOp(Node->getOperand(0)); 17228b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (Node->getOpcode() == ISD::SINT_TO_FP) 17238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 172415e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result, 172515e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(Node->getOperand(0).getValueType())); 17268b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner else 172723993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result = DAG.getZeroExtendInReg(Result, 172823993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Node->getOperand(0).getValueType()); 172977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // No extra round required here. 173077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 17318b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: 173377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, NVT, 173477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getOperand(0)); 173577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // Round if we cannot tolerate excess precision. 173677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (NoExcessFPPrecision) 173715e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, 173815e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 173977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner break; 17408b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 17418b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17428b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 17438b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_TO_SINT: 17448b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_TO_UINT: 17458b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 17468b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 17478b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 17488b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17498b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 17508b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input result is prerounded, so we don't have to do anything 17518b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // special. 17528b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 17538b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17548b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: 17558b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "not implemented"); 17568b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 17578b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 17588b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17598b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 17602c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case ISD::FABS: 17612c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case ISD::FNEG: 17622c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 17632c8086f4b9916b2d02842be5e375276023225fbaChris Lattner assert(Tmp1.getValueType() == NVT); 17642c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 17652c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // NOTE: we do not have to do any extra rounding here for 17662c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // NoExcessFPPrecision, because we know the input will have the appropriate 17672c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // precision, and these operations don't modify precision at all. 17682c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 17692c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 1770da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FSQRT: 1771da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FSIN: 1772da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FCOS: 1773da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 1774da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner assert(Tmp1.getValueType() == NVT); 1775da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 1776da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner if(NoExcessFPPrecision) 177715e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, 177815e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 1779da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner break; 1780da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner 178103c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::AND: 178203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::OR: 178303c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::XOR: 17840f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::ADD: 17858b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SUB: 17860f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::MUL: 17870f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // The input may have strange things in the top bits of the registers, but 17880f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // these operations don't care. They may have wierd bits going out, but 17890f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // that too is okay if they are integer operations. 17900f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 17910f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 17920f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner assert(Tmp1.getValueType() == NVT && Tmp2.getValueType() == NVT); 17930f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 17940f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 17950f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // However, if this is a floating point operation, they will give excess 17960f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // precision that we may not be able to tolerate. If we DO allow excess 17970f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // precision, just leave it, otherwise excise it. 17988b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // FIXME: Why would we need to round FP ops more than integer ones? 17998b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Is Round(Add(Add(A,B),C)) != Round(Add(Round(Add(A,B)), C)) 18000f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (MVT::isFloatingPoint(NVT) && NoExcessFPPrecision) 180115e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, 180215e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 18030f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 18040f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 18058b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SDIV: 18068b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SREM: 18078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // These operators require that their input be sign extended. 18088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 18098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 18108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isInteger(NVT)) { 181115e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, 181215e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 181315e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2, 181415e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 18158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 18168b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 18178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 18188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Perform FP_ROUND: this is probably overly pessimistic. 18198b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isFloatingPoint(NVT) && NoExcessFPPrecision) 182015e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, 182115e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 18228b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 18238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 18248b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UDIV: 18258b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UREM: 18268b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // These operators require that their input be zero extended. 18278b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 18288b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 18298b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(MVT::isInteger(NVT) && "Operators don't apply to FP!"); 183023993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp1 = DAG.getZeroExtendInReg(Tmp1, VT); 183123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp2 = DAG.getZeroExtendInReg(Tmp2, VT); 18328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 18338b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 18348b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 18358b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SHL: 18368b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 18378b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 18388b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SHL, NVT, Tmp1, Tmp2); 18398b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 18408b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SRA: 18418b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input value must be properly sign extended. 18428b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 184315e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, 184415e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(VT)); 18458b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 18468b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SRA, NVT, Tmp1, Tmp2); 18478b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 18488b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SRL: 18498b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input value must be properly zero extended. 18508b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 185123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp1 = DAG.getZeroExtendInReg(Tmp1, VT); 18528b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 18538b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SRL, NVT, Tmp1, Tmp2); 18548b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 185503c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::LOAD: 185603c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 185703c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 1858232ee95a09a583b7d66b90ee7ddf7fdb9c194a04Chris Lattner // FIXME: When the DAG combiner exists, change this to use EXTLOAD! 18596841dec8c1c071b5a417fb4172633c68301be36cChris Lattner if (MVT::isInteger(NVT)) 18605f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Result = DAG.getExtLoad(ISD::ZEXTLOAD, NVT, Tmp1, Tmp2, 18615f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Node->getOperand(2), VT); 18626841dec8c1c071b5a417fb4172633c68301be36cChris Lattner else 18635f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Result = DAG.getExtLoad(ISD::EXTLOAD, NVT, Tmp1, Tmp2, 18645f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner Node->getOperand(2), VT); 186503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 186603c8546ec57523970874917854a2fb77b1ff598eChris Lattner // Remember that we legalized the chain. 186703c8546ec57523970874917854a2fb77b1ff598eChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 186803c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 186903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SELECT: 187047e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 187147e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 187247e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 187347e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0));// Legalize the condition. 187447e9223e06390897c3834f8c527001df392570ffChris Lattner break; 187547e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 187647e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // Promote the condition. 187747e9223e06390897c3834f8c527001df392570ffChris Lattner break; 187847e9223e06390897c3834f8c527001df392570ffChris Lattner } 187903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Legalize the op0 188003c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp3 = PromoteOp(Node->getOperand(2)); // Legalize the op1 188103c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::SELECT, NVT, Tmp1, Tmp2, Tmp3); 188203c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 1883d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner case ISD::TAILCALL: 18848ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner case ISD::CALL: { 18858ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 18868ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 18878ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner 18883d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 18893d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) 18903d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 18913d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 18928ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner assert(Node->getNumValues() == 2 && Op.ResNo == 0 && 18938ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner "Can only promote single result calls"); 18948ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner std::vector<MVT::ValueType> RetTyVTs; 18958ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.reserve(2); 18968ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.push_back(NVT); 18978ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.push_back(MVT::Other); 1898d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner SDNode *NC = DAG.getCall(RetTyVTs, Tmp1, Tmp2, Ops, 1899d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner Node->getOpcode() == ISD::TAILCALL); 19008ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Result = SDOperand(NC, 0); 19018ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner 19028ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner // Insert the new chain mapping. 19038ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 19048ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner break; 1905edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman } 1906fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTPOP: 1907fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTTZ: 1908fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTLZ: 1909fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Tmp1 = Node->getOperand(0); 1910fecf095292991bdf9396fec474011446107f9813Andrew Lenharth //Zero extend the argument 1911fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, NVT, Tmp1); 1912fecf095292991bdf9396fec474011446107f9813Andrew Lenharth // Perform the larger operation, then subtract if needed. 1913fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Tmp1 = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 1914fecf095292991bdf9396fec474011446107f9813Andrew Lenharth switch(Node->getOpcode()) 1915fecf095292991bdf9396fec474011446107f9813Andrew Lenharth { 1916fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTPOP: 1917fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Result = Tmp1; 1918fecf095292991bdf9396fec474011446107f9813Andrew Lenharth break; 1919fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTTZ: 1920fecf095292991bdf9396fec474011446107f9813Andrew Lenharth //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 1921fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Tmp2 = DAG.getSetCC(ISD::SETEQ, MVT::i1, Tmp1, 1922fecf095292991bdf9396fec474011446107f9813Andrew Lenharth DAG.getConstant(getSizeInBits(NVT), NVT)); 1923fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Result = DAG.getNode(ISD::SELECT, NVT, Tmp2, 1924fecf095292991bdf9396fec474011446107f9813Andrew Lenharth DAG.getConstant(getSizeInBits(VT),NVT), Tmp1); 1925fecf095292991bdf9396fec474011446107f9813Andrew Lenharth break; 1926fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTLZ: 1927fecf095292991bdf9396fec474011446107f9813Andrew Lenharth //Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 1928fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Result = DAG.getNode(ISD::SUB, NVT, Tmp1, 1929fecf095292991bdf9396fec474011446107f9813Andrew Lenharth DAG.getConstant(getSizeInBits(NVT) - 1930fecf095292991bdf9396fec474011446107f9813Andrew Lenharth getSizeInBits(VT), NVT)); 1931fecf095292991bdf9396fec474011446107f9813Andrew Lenharth break; 1932fecf095292991bdf9396fec474011446107f9813Andrew Lenharth } 1933fecf095292991bdf9396fec474011446107f9813Andrew Lenharth break; 193403c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 193503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 193603c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(Result.Val && "Didn't set a result!"); 193703c8546ec57523970874917854a2fb77b1ff598eChris Lattner AddPromotedOperand(Op, Result); 193803c8546ec57523970874917854a2fb77b1ff598eChris Lattner return Result; 193903c8546ec57523970874917854a2fb77b1ff598eChris Lattner} 19403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 194184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner/// ExpandAddSub - Find a clever way to expand this add operation into 194284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner/// subcomponents. 19434759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattnervoid SelectionDAGLegalize:: 19444759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris LattnerExpandByParts(unsigned NodeOp, SDOperand LHS, SDOperand RHS, 19454759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner SDOperand &Lo, SDOperand &Hi) { 194684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner // Expand the subcomponents. 194784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner SDOperand LHSL, LHSH, RHSL, RHSH; 194884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandOp(LHS, LHSL, LHSH); 194984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandOp(RHS, RHSL, RHSH); 195084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner 1951bd0781ed12dd817f760065e3ac2dcff12fb29440Chris Lattner // FIXME: this should be moved to the dag combiner someday. 1952e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner assert(NodeOp == ISD::ADD_PARTS || NodeOp == ISD::SUB_PARTS); 1953e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (LHSL.getValueType() == MVT::i32) { 1954e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner SDOperand LowEl; 1955e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(LHSL)) 1956e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (C->getValue() == 0) 1957e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner LowEl = RHSL; 1958e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(RHSL)) 1959e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (C->getValue() == 0) 1960e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner LowEl = LHSL; 1961e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (LowEl.Val) { 1962e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner // Turn this into an add/sub of the high part only. 1963e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner SDOperand HiEl = 1964e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner DAG.getNode(NodeOp == ISD::ADD_PARTS ? ISD::ADD : ISD::SUB, 1965e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner LowEl.getValueType(), LHSH, RHSH); 1966e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Lo = LowEl; 1967e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Hi = HiEl; 1968e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner return; 1969bd0781ed12dd817f760065e3ac2dcff12fb29440Chris Lattner } 1970e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner } 1971bd0781ed12dd817f760065e3ac2dcff12fb29440Chris Lattner 197284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner std::vector<SDOperand> Ops; 197384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LHSL); 197484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LHSH); 197584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(RHSL); 197684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(RHSH); 1977e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner 1978e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner std::vector<MVT::ValueType> VTs(2, LHSL.getValueType()); 1979e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Lo = DAG.getNode(NodeOp, VTs, Ops); 198084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Hi = Lo.getValue(1); 198184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner} 198284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner 19835b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattnervoid SelectionDAGLegalize::ExpandShiftParts(unsigned NodeOp, 19845b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner SDOperand Op, SDOperand Amt, 19855b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner SDOperand &Lo, SDOperand &Hi) { 19865b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner // Expand the subcomponents. 19875b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner SDOperand LHSL, LHSH; 19885b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner ExpandOp(Op, LHSL, LHSH); 19895b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner 19905b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner std::vector<SDOperand> Ops; 19915b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Ops.push_back(LHSL); 19925b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Ops.push_back(LHSH); 19935b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Ops.push_back(Amt); 1994e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner std::vector<MVT::ValueType> VTs; 1995e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner VTs.push_back(LHSL.getValueType()); 1996e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner VTs.push_back(LHSH.getValueType()); 1997e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner VTs.push_back(Amt.getValueType()); 1998e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Lo = DAG.getNode(NodeOp, VTs, Ops); 19995b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Hi = Lo.getValue(1); 20005b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner} 20015b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner 20025b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner 2003e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// ExpandShift - Try to find a clever way to expand this shift operation out to 2004e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// smaller elements. If we can't find a way that is more efficient than a 2005e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// libcall on this target, return false. Otherwise, return true with the 2006e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// low-parts expanded into Lo and Hi. 2007e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattnerbool SelectionDAGLegalize::ExpandShift(unsigned Opc, SDOperand Op,SDOperand Amt, 2008e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand &Lo, SDOperand &Hi) { 2009e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner assert((Opc == ISD::SHL || Opc == ISD::SRA || Opc == ISD::SRL) && 2010e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner "This is not a shift!"); 2011f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman 2012e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(Op.getValueType()); 2013f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman SDOperand ShAmt = LegalizeOp(Amt); 2014f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman MVT::ValueType ShTy = ShAmt.getValueType(); 2015f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman unsigned VTBits = MVT::getSizeInBits(Op.getValueType()); 2016f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman unsigned NVTBits = MVT::getSizeInBits(NVT); 2017f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman 2018f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // Handle the case when Amt is an immediate. Other cases are currently broken 2019f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // and are disabled. 2020f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Amt.Val)) { 2021f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman unsigned Cst = CN->getValue(); 2022f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // Expand the incoming operand to be shifted, so that we have its parts 2023f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman SDOperand InL, InH; 2024f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman ExpandOp(Op, InL, InH); 2025f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman switch(Opc) { 2026f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman case ISD::SHL: 2027f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman if (Cst > VTBits) { 2028f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getConstant(0, NVT); 2029f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getConstant(0, NVT); 2030f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else if (Cst > NVTBits) { 2031f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getConstant(0, NVT); 2032f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Cst-NVTBits,ShTy)); 2033ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner } else if (Cst == NVTBits) { 2034ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Lo = DAG.getConstant(0, NVT); 2035ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Hi = InL; 2036f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else { 2037f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Cst, ShTy)); 2038f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getNode(ISD::OR, NVT, 2039f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SHL, NVT, InH, DAG.getConstant(Cst, ShTy)), 2040f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SRL, NVT, InL, DAG.getConstant(NVTBits-Cst, ShTy))); 2041f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 2042f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman return true; 2043f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman case ISD::SRL: 2044f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman if (Cst > VTBits) { 2045f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getConstant(0, NVT); 2046f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getConstant(0, NVT); 2047f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else if (Cst > NVTBits) { 2048f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Cst-NVTBits,ShTy)); 2049f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getConstant(0, NVT); 2050ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner } else if (Cst == NVTBits) { 2051ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Lo = InH; 2052ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Hi = DAG.getConstant(0, NVT); 2053f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else { 2054f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getNode(ISD::OR, NVT, 2055f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SRL, NVT, InL, DAG.getConstant(Cst, ShTy)), 2056f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SHL, NVT, InH, DAG.getConstant(NVTBits-Cst, ShTy))); 2057f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Cst, ShTy)); 2058f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 2059f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman return true; 2060f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman case ISD::SRA: 2061f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman if (Cst > VTBits) { 2062edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Hi = Lo = DAG.getNode(ISD::SRA, NVT, InH, 2063f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getConstant(NVTBits-1, ShTy)); 2064f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else if (Cst > NVTBits) { 2065edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Lo = DAG.getNode(ISD::SRA, NVT, InH, 2066f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getConstant(Cst-NVTBits, ShTy)); 2067edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Hi = DAG.getNode(ISD::SRA, NVT, InH, 2068f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getConstant(NVTBits-1, ShTy)); 2069ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner } else if (Cst == NVTBits) { 2070ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Lo = InH; 2071edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Hi = DAG.getNode(ISD::SRA, NVT, InH, 2072ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner DAG.getConstant(NVTBits-1, ShTy)); 2073f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else { 2074f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getNode(ISD::OR, NVT, 2075f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SRL, NVT, InL, DAG.getConstant(Cst, ShTy)), 2076f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SHL, NVT, InH, DAG.getConstant(NVTBits-Cst, ShTy))); 2077f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getNode(ISD::SRA, NVT, InH, DAG.getConstant(Cst, ShTy)); 2078f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 2079f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman return true; 2080f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 2081f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 2082f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // FIXME: The following code for expanding shifts using ISD::SELECT is buggy, 2083f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // so disable it for now. Currently targets are handling this via SHL_PARTS 2084f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // and friends. 2085f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman return false; 2086e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2087e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we have an efficient select operation (or if the selects will all fold 2088e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // away), lower to some complex code, otherwise just emit the libcall. 2089e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (TLI.getOperationAction(ISD::SELECT, NVT) != TargetLowering::Legal && 2090e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner !isa<ConstantSDNode>(Amt)) 2091e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner return false; 2092e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2093e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand InL, InH; 2094e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner ExpandOp(Op, InL, InH); 2095e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand NAmt = DAG.getNode(ISD::SUB, ShTy, // NAmt = 32-ShAmt 2096e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits, ShTy), ShAmt); 2097e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2098e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner // Compare the unmasked shift amount against 32. 2099e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand Cond = DAG.getSetCC(ISD::SETGE, TLI.getSetCCResultTy(), ShAmt, 2100e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner DAG.getConstant(NVTBits, ShTy)); 2101e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner 2102e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (TLI.getShiftAmountFlavor() != TargetLowering::Mask) { 2103e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner ShAmt = DAG.getNode(ISD::AND, ShTy, ShAmt, // ShAmt &= 31 2104e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 2105e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner NAmt = DAG.getNode(ISD::AND, ShTy, NAmt, // NAmt &= 31 2106e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 2107e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } 2108e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2109e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (Opc == ISD::SHL) { 2110e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand T1 = DAG.getNode(ISD::OR, NVT,// T1 = (Hi << Amt) | (Lo >> NAmt) 2111e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SHL, NVT, InH, ShAmt), 2112e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SRL, NVT, InL, NAmt)); 2113e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand T2 = DAG.getNode(ISD::SHL, NVT, InL, ShAmt); // T2 = Lo << Amt&31 2114edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2115e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, Cond, T2, T1); 2116e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, Cond, DAG.getConstant(0, NVT), T2); 2117e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } else { 211877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand HiLoPart = DAG.getNode(ISD::SELECT, NVT, 211977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getSetCC(ISD::SETEQ, 212077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TLI.getSetCCResultTy(), NAmt, 212177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(32, ShTy)), 212277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(0, NVT), 212377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getNode(ISD::SHL, NVT, InH, NAmt)); 2124e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand T1 = DAG.getNode(ISD::OR, NVT,// T1 = (Hi << NAmt) | (Lo >> Amt) 212577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner HiLoPart, 2126e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SRL, NVT, InL, ShAmt)); 2127e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand T2 = DAG.getNode(Opc, NVT, InH, ShAmt); // T2 = InH >> ShAmt&31 2128e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2129e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand HiPart; 213077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (Opc == ISD::SRA) 213177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner HiPart = DAG.getNode(ISD::SRA, NVT, InH, 213277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 2133e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner else 2134e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner HiPart = DAG.getConstant(0, NVT); 2135e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, Cond, T2, T1); 2136e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, Cond, HiPart, T2); 2137e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } 2138e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner return true; 2139e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner} 214077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 21419530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// FindLatestCallSeqStart - Scan up the dag to find the latest (highest 21429530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// NodeDepth) node that is an CallSeqStart operation and occurs later than 21439c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// Found. 21449530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattnerstatic void FindLatestCallSeqStart(SDNode *Node, SDNode *&Found) { 21459c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->getNodeDepth() <= Found->getNodeDepth()) return; 21469c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 214716cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // If we found an CALLSEQ_START, we already know this node occurs later 21489c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // than the Found node. Just remember this node and return. 214916cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) { 21509c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found = Node; 21519c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return; 21529c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 21539c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21549c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Otherwise, scan the operands of Node to see if any of them is a call. 21559c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(Node->getNumOperands() != 0 && 21569c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner "All leaves should have depth equal to the entry node!"); 21579c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (unsigned i = 0, e = Node->getNumOperands()-1; i != e; ++i) 21589530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindLatestCallSeqStart(Node->getOperand(i).Val, Found); 21599c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21609c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Tail recurse for the last iteration. 21619530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindLatestCallSeqStart(Node->getOperand(Node->getNumOperands()-1).Val, 21629c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found); 21639c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 21649c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21659c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21669530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// FindEarliestCallSeqEnd - Scan down the dag to find the earliest (lowest 21679530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// NodeDepth) node that is an CallSeqEnd operation and occurs more recent 21689c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// than Found. 21699530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattnerstatic void FindEarliestCallSeqEnd(SDNode *Node, SDNode *&Found) { 21709c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Found && Node->getNodeDepth() >= Found->getNodeDepth()) return; 21719c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 217216cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // If we found an CALLSEQ_END, we already know this node occurs earlier 21739c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // than the Found node. Just remember this node and return. 217416cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) { 21759c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found = Node; 21769c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return; 21779c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 21789c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21799c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Otherwise, scan the operands of Node to see if any of them is a call. 21809c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode::use_iterator UI = Node->use_begin(), E = Node->use_end(); 21819c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (UI == E) return; 21829c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (--E; UI != E; ++UI) 21839530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindEarliestCallSeqEnd(*UI, Found); 21849c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21859c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Tail recurse for the last iteration. 21869530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindEarliestCallSeqEnd(*UI, Found); 21879c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 21889c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21899530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// FindCallSeqEnd - Given a chained node that is part of a call sequence, 219016cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner/// find the CALLSEQ_END node that terminates the call sequence. 21919530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattnerstatic SDNode *FindCallSeqEnd(SDNode *Node) { 219216cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 21939c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return Node; 2194f4b457987fca50a1dc86e1a60dad2cff2b060945Chris Lattner if (Node->use_empty()) 21959530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner return 0; // No CallSeqEnd 21969c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21979c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->hasOneUse()) // Simple case, only has one user to check. 21989530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner return FindCallSeqEnd(*Node->use_begin()); 2199edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 22009c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand TheChain(Node, Node->getNumValues()-1); 22012789bde57f4245f4418a2d8d54e7f372b71f0a7dChris Lattner if (TheChain.getValueType() != MVT::Other) 22022789bde57f4245f4418a2d8d54e7f372b71f0a7dChris Lattner TheChain = SDOperand(Node, 0); 22039c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(TheChain.getValueType() == MVT::Other && "Is not a token chain!"); 2204edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2205edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman for (SDNode::use_iterator UI = Node->use_begin(), 22069c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner E = Node->use_end(); ; ++UI) { 220716cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner assert(UI != E && "Didn't find a user of the tokchain, no CALLSEQ_END!"); 2208edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 22099c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Make sure to only follow users of our token chain. 22109c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *User = *UI; 22119c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 22129c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (User->getOperand(i) == TheChain) 2213eb516e7f0aa3223eab7967f4c0f8132d82efd841Chris Lattner if (SDNode *Result = FindCallSeqEnd(User)) 2214eb516e7f0aa3223eab7967f4c0f8132d82efd841Chris Lattner return Result; 22159c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 22169c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(0 && "Unreachable"); 22179c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner abort(); 22189c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 22199c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 22209530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// FindCallSeqStart - Given a chained node that is part of a call sequence, 222116cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner/// find the CALLSEQ_START node that initiates the call sequence. 22229530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattnerstatic SDNode *FindCallSeqStart(SDNode *Node) { 22239530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner assert(Node && "Didn't find callseq_start for a call??"); 222416cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 22250d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 22260d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner assert(Node->getOperand(0).getValueType() == MVT::Other && 22270d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner "Node doesn't have a token chain argument!"); 22289530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner return FindCallSeqStart(Node->getOperand(0).Val); 22290d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner} 22300d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 22310d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 22329c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// FindInputOutputChains - If we are replacing an operation with a call we need 22339c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// to find the call that occurs before and the call that occurs after it to 22340d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// properly serialize the calls in the block. The returned operand is the 22350d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// input chain value for the new call (e.g. the entry node or the previous 22360d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// call), and OutChain is set to be the chain node to update to point to the 22370d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// end of the call chain. 22389c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnerstatic SDOperand FindInputOutputChains(SDNode *OpNode, SDNode *&OutChain, 22399c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand Entry) { 22409530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner SDNode *LatestCallSeqStart = Entry.Val; 22419530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner SDNode *LatestCallSeqEnd = 0; 22429530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindLatestCallSeqStart(OpNode, LatestCallSeqStart); 22439530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner //std::cerr<<"Found node: "; LatestCallSeqStart->dump(); std::cerr <<"\n"; 2244edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 224516cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // It is possible that no ISD::CALLSEQ_START was found because there is no 2246c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman // previous call in the function. LatestCallStackDown may in that case be 224716cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // the entry node itself. Do not attempt to find a matching CALLSEQ_END 224816cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // unless LatestCallStackDown is an CALLSEQ_START. 22499530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner if (LatestCallSeqStart->getOpcode() == ISD::CALLSEQ_START) 22509530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner LatestCallSeqEnd = FindCallSeqEnd(LatestCallSeqStart); 2251c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman else 22529530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner LatestCallSeqEnd = Entry.Val; 22539530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner assert(LatestCallSeqEnd && "NULL return from FindCallSeqEnd"); 2254edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 22550d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Finally, find the first call that this must come before, first we find the 22569530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner // CallSeqEnd that ends the call. 22570d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner OutChain = 0; 22589530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindEarliestCallSeqEnd(OpNode, OutChain); 22599c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 22609530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner // If we found one, translate from the adj up to the callseq_start. 22610d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner if (OutChain) 22629530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner OutChain = FindCallSeqStart(OutChain); 22639c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 22649530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner return SDOperand(LatestCallSeqEnd, 0); 22659c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 22669c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 22670d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// SpliceCallInto - Given the result chain of a libcall (CallResult), and a 2268b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattnervoid SelectionDAGLegalize::SpliceCallInto(const SDOperand &CallResult, 2269b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner SDNode *OutChain) { 22700d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Nothing to splice it into? 22710d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner if (OutChain == 0) return; 22720d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 22730d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner assert(OutChain->getOperand(0).getValueType() == MVT::Other); 22740d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner //OutChain->dump(); 22750d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 22760d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Form a token factor node merging the old inval and the new inval. 22770d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner SDOperand InToken = DAG.getNode(ISD::TokenFactor, MVT::Other, CallResult, 22780d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner OutChain->getOperand(0)); 22790d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Change the node to refer to the new token. 22800d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner OutChain->setAdjCallChain(InToken); 22810d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner} 22829c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 22839c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 228477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 228577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 228677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 228777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 228877e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerSDOperand SelectionDAGLegalize::ExpandLibCall(const char *Name, SDNode *Node, 228977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand &Hi) { 22909c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *OutChain; 22919c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand InChain = FindInputOutputChains(Node, OutChain, 22929c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner DAG.getEntryNode()); 2293f4b457987fca50a1dc86e1a60dad2cff2b060945Chris Lattner if (InChain.Val == 0) 2294f4b457987fca50a1dc86e1a60dad2cff2b060945Chris Lattner InChain = DAG.getEntryNode(); 22959c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 229677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 229777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 229877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner MVT::ValueType ArgVT = Node->getOperand(i).getValueType(); 229977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *ArgTy = MVT::getTypeForValueType(ArgVT); 230077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args.push_back(std::make_pair(Node->getOperand(i), ArgTy)); 230177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 230277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Callee = DAG.getExternalSymbol(Name, TLI.getPointerTy()); 2303edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 23040d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 230577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *RetTy = MVT::getTypeForValueType(Node->getValueType(0)); 23060d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner std::pair<SDOperand,SDOperand> CallInfo = 2307adf6a965a321372c640845407195594835921eb4Chris Lattner TLI.LowerCallTo(InChain, RetTy, false, CallingConv::C, false, 2308adf6a965a321372c640845407195594835921eb4Chris Lattner Callee, Args, DAG); 2309b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner SpliceCallInto(CallInfo.second, OutChain); 2310b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner 2311b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner NeedsAnotherIteration = true; 23120d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 23130d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner switch (getTypeAction(CallInfo.first.getValueType())) { 231477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner default: assert(0 && "Unknown thing"); 231577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Legal: 23160d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner return CallInfo.first; 231777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Promote: 231877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(0 && "Cannot promote this yet!"); 231977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Expand: 232077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Lo; 23210d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner ExpandOp(CallInfo.first, Lo, Hi); 232277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner return Lo; 232377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 232477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 232577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 23269c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 232777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner/// ExpandIntToFP - Expand a [US]INT_TO_FP operation, assuming that the 232877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner/// destination type is legal. 232977e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerSDOperand SelectionDAGLegalize:: 233077e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerExpandIntToFP(bool isSigned, MVT::ValueType DestTy, SDOperand Source) { 233177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(getTypeAction(DestTy) == Legal && "Destination type is not legal!"); 233277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(getTypeAction(Source.getValueType()) == Expand && 233377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner "This is not an expansion!"); 233477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(Source.getValueType() == MVT::i64 && "Only handle expand from i64!"); 233577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 23360d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner if (!isSigned) { 2337e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner assert(Source.getValueType() == MVT::i64 && 2338e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner "This only works for 64-bit -> FP"); 2339e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner // The 64-bit value loaded will be incorrectly if the 'sign bit' of the 2340e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner // incoming integer is set. To handle this, we dynamically test to see if 2341e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner // it is set, and, if so, add a fudge factor. 2342e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand Lo, Hi; 2343e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner ExpandOp(Source, Lo, Hi); 2344e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 234566de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner // If this is unsigned, and not supported, first perform the conversion to 234666de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner // signed, then adjust the result if the sign bit is set. 234766de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner SDOperand SignedConv = ExpandIntToFP(true, DestTy, 234866de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner DAG.getNode(ISD::BUILD_PAIR, Source.getValueType(), Lo, Hi)); 234966de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 2350e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand SignSet = DAG.getSetCC(ISD::SETLT, TLI.getSetCCResultTy(), Hi, 2351e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner DAG.getConstant(0, Hi.getValueType())); 2352e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand Zero = getIntPtrConstant(0), Four = getIntPtrConstant(4); 2353e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand CstOffset = DAG.getNode(ISD::SELECT, Zero.getValueType(), 2354e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SignSet, Four, Zero); 2355383203b0036b8fdeef8119975fdbbd528b760adbChris Lattner uint64_t FF = 0x5f800000ULL; 2356383203b0036b8fdeef8119975fdbbd528b760adbChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 2357383203b0036b8fdeef8119975fdbbd528b760adbChris Lattner static Constant *FudgeFactor = ConstantUInt::get(Type::ULongTy, FF); 2358e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 2359e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner MachineConstantPool *CP = DAG.getMachineFunction().getConstantPool(); 2360e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand CPIdx = DAG.getConstantPool(CP->getConstantPoolIndex(FudgeFactor), 2361e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner TLI.getPointerTy()); 2362e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner CPIdx = DAG.getNode(ISD::ADD, TLI.getPointerTy(), CPIdx, CstOffset); 2363e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand FudgeInReg; 2364e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner if (DestTy == MVT::f32) 236552d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner FudgeInReg = DAG.getLoad(MVT::f32, DAG.getEntryNode(), CPIdx, 236652d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner DAG.getSrcValue(NULL)); 2367e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner else { 2368e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner assert(DestTy == MVT::f64 && "Unexpected conversion"); 23695f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner FudgeInReg = DAG.getExtLoad(ISD::EXTLOAD, MVT::f64, DAG.getEntryNode(), 23705f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner CPIdx, DAG.getSrcValue(NULL), MVT::f32); 2371e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 2372e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner return DAG.getNode(ISD::ADD, DestTy, SignedConv, FudgeInReg); 237377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 23740d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 2375a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner // Check to see if the target has a custom way to lower this. If so, use it. 2376a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner switch (TLI.getOperationAction(ISD::SINT_TO_FP, Source.getValueType())) { 2377a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner default: assert(0 && "This action not implemented for this operation!"); 2378a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner case TargetLowering::Legal: 2379a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner case TargetLowering::Expand: 2380a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner break; // This case is handled below. 2381a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner case TargetLowering::Custom: 2382a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner Source = DAG.getNode(ISD::SINT_TO_FP, DestTy, Source); 238350381b6c4180e9a2b983d4623da2e485cd768632Chris Lattner return LegalizeOp(TLI.LowerOperation(Source, DAG)); 2384a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2385a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 238613689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner // Expand the source, then glue it back together for the call. We must expand 238713689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner // the source in case it is shared (this pass of legalize must traverse it). 238813689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner SDOperand SrcLo, SrcHi; 238913689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner ExpandOp(Source, SrcLo, SrcHi); 239013689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner Source = DAG.getNode(ISD::BUILD_PAIR, Source.getValueType(), SrcLo, SrcHi); 239113689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 23920d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner SDNode *OutChain = 0; 23930d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner SDOperand InChain = FindInputOutputChains(Source.Val, OutChain, 23940d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner DAG.getEntryNode()); 23950d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner const char *FnName = 0; 23960d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner if (DestTy == MVT::f32) 23970d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner FnName = "__floatdisf"; 23980d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner else { 23990d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner assert(DestTy == MVT::f64 && "Unknown fp value type!"); 24000d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner FnName = "__floatdidf"; 24010d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 24020d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 240377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Callee = DAG.getExternalSymbol(FnName, TLI.getPointerTy()); 240477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 240577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 240677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *ArgTy = MVT::getTypeForValueType(Source.getValueType()); 240744d105b7faf5672a2af61a3f0fdfed0d437d5777Chris Lattner 240877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args.push_back(std::make_pair(Source, ArgTy)); 240977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 241077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // We don't care about token chains for libcalls. We just use the entry 241177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // node as our input and ignore the output chain. This allows us to place 241277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // calls wherever we need them to satisfy data dependences. 241377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *RetTy = MVT::getTypeForValueType(DestTy); 24140d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 24150d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner std::pair<SDOperand,SDOperand> CallResult = 2416adf6a965a321372c640845407195594835921eb4Chris Lattner TLI.LowerCallTo(InChain, RetTy, false, CallingConv::C, true, 2417adf6a965a321372c640845407195594835921eb4Chris Lattner Callee, Args, DAG); 24180d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 2419b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner SpliceCallInto(CallResult.second, OutChain); 24200d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner return CallResult.first; 242177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2422edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2423e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2424e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 24253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// ExpandOp - Expand the specified SDOperand into its two component pieces 24263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// Lo&Hi. Note that the Op MUST be an expanded type. As a result of this, the 24273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// LegalizeNodes map is filled in for any results that are not expanded, the 24283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// ExpandedNodes map is filled in for any results that are expanded, and the 24293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// Lo/Hi values are returned. 24303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ 24313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MVT::ValueType VT = Op.getValueType(); 243271c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 24333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDNode *Node = Op.Val; 24343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(getTypeAction(VT) == Expand && "Not an expanded type!"); 24353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::isInteger(VT) && "Cannot expand FP values!"); 24363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::isInteger(NVT) && NVT < VT && 24373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Cannot expand to FP value or to larger int value!"); 24383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 24393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If there is more than one use of this, see if we already expanded it. 24403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // There is no use remembering values that only have a single use, as the map 24413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // entries will never be reused. 24423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!Node->hasOneUse()) { 24433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::map<SDOperand, std::pair<SDOperand, SDOperand> >::iterator I 24443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner = ExpandedNodes.find(Op); 24453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (I != ExpandedNodes.end()) { 24463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = I->second.first; 24473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = I->second.second; 24483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return; 24493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 245045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner } else { 245145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner assert(!ExpandedNodes.count(Op) && "Re-expanding a node!"); 24523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 24533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 24544e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // Expanding to multiple registers needs to perform an optimization step, and 24554e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // is not careful to avoid operations the target does not support. Make sure 24564e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // that all generated operations are legalized in the next iteration. 24574e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner NeedsAnotherIteration = true; 24583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 24593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 24603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 24613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 24623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(0 && "Do not know how to expand this operator!"); 24633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner abort(); 2464fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: 2465fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Lo = DAG.getNode(ISD::UNDEF, NVT); 2466fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Hi = DAG.getNode(ISD::UNDEF, NVT); 2467fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 24683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::Constant: { 24693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner uint64_t Cst = cast<ConstantSDNode>(Node)->getValue(); 24703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getConstant(Cst, NVT); 24713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getConstant(Cst >> MVT::getSizeInBits(NVT), NVT); 24723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 24733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 24743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 24753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CopyFromReg: { 247618c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner unsigned Reg = cast<RegSDNode>(Node)->getReg(); 24773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Aggregate register values are always in consequtive pairs. 247869a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Lo = DAG.getCopyFromReg(Reg, NVT, Node->getOperand(0)); 247969a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Hi = DAG.getCopyFromReg(Reg+1, NVT, Lo.getValue(1)); 2480edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 248169a52155d2eff066b49dbac385113002fd9dba14Chris Lattner // Remember that we legalized the chain. 248269a52155d2eff066b49dbac385113002fd9dba14Chris Lattner AddLegalizedOperand(Op.getValue(1), Hi.getValue(1)); 248369a52155d2eff066b49dbac385113002fd9dba14Chris Lattner 24843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(NVT) && "Cannot expand this multiple times yet!"); 24853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 24863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 24873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2488d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner case ISD::BUILD_PAIR: 2489d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner // Legalize both operands. FIXME: in the future we should handle the case 2490d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner // where the two elements are not legal. 2491d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner assert(isTypeLegal(NVT) && "Cannot expand this multiple times yet!"); 2492d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner Lo = LegalizeOp(Node->getOperand(0)); 2493d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner Hi = LegalizeOp(Node->getOperand(1)); 2494d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner break; 2495d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner 2496edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner case ISD::CTPOP: 2497edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner ExpandOp(Node->getOperand(0), Lo, Hi); 24989b583b49103f21888ac3de3f7941a98a63a23aeaChris Lattner Lo = DAG.getNode(ISD::ADD, NVT, // ctpop(HL) -> ctpop(H)+ctpop(L) 24999b583b49103f21888ac3de3f7941a98a63a23aeaChris Lattner DAG.getNode(ISD::CTPOP, NVT, Lo), 25009b583b49103f21888ac3de3f7941a98a63a23aeaChris Lattner DAG.getNode(ISD::CTPOP, NVT, Hi)); 2501edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Hi = DAG.getConstant(0, NVT); 2502edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner break; 2503edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner 250439a8f336305a492fc6d2625f39f08968185616d2Chris Lattner case ISD::CTLZ: { 250539a8f336305a492fc6d2625f39f08968185616d2Chris Lattner // ctlz (HL) -> ctlz(H) != 32 ? ctlz(H) : (ctlz(L)+32) 25063becf2026bec881a60cbbe0031d8c51f4d6d4e28Chris Lattner ExpandOp(Node->getOperand(0), Lo, Hi); 250739a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand BitsC = DAG.getConstant(MVT::getSizeInBits(NVT), NVT); 250839a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand HLZ = DAG.getNode(ISD::CTLZ, NVT, Hi); 250939a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand TopNotZero = DAG.getSetCC(ISD::SETNE, TLI.getSetCCResultTy(), 251039a8f336305a492fc6d2625f39f08968185616d2Chris Lattner HLZ, BitsC); 251139a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand LowPart = DAG.getNode(ISD::CTLZ, NVT, Lo); 251239a8f336305a492fc6d2625f39f08968185616d2Chris Lattner LowPart = DAG.getNode(ISD::ADD, NVT, LowPart, BitsC); 251339a8f336305a492fc6d2625f39f08968185616d2Chris Lattner 251439a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, TopNotZero, HLZ, LowPart); 251539a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Hi = DAG.getConstant(0, NVT); 251639a8f336305a492fc6d2625f39f08968185616d2Chris Lattner break; 251739a8f336305a492fc6d2625f39f08968185616d2Chris Lattner } 251839a8f336305a492fc6d2625f39f08968185616d2Chris Lattner 251939a8f336305a492fc6d2625f39f08968185616d2Chris Lattner case ISD::CTTZ: { 252039a8f336305a492fc6d2625f39f08968185616d2Chris Lattner // cttz (HL) -> cttz(L) != 32 ? cttz(L) : (cttz(H)+32) 25213becf2026bec881a60cbbe0031d8c51f4d6d4e28Chris Lattner ExpandOp(Node->getOperand(0), Lo, Hi); 252239a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand BitsC = DAG.getConstant(MVT::getSizeInBits(NVT), NVT); 252339a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand LTZ = DAG.getNode(ISD::CTTZ, NVT, Lo); 252439a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand BotNotZero = DAG.getSetCC(ISD::SETNE, TLI.getSetCCResultTy(), 252539a8f336305a492fc6d2625f39f08968185616d2Chris Lattner LTZ, BitsC); 252639a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand HiPart = DAG.getNode(ISD::CTTZ, NVT, Hi); 252739a8f336305a492fc6d2625f39f08968185616d2Chris Lattner HiPart = DAG.getNode(ISD::ADD, NVT, HiPart, BitsC); 252839a8f336305a492fc6d2625f39f08968185616d2Chris Lattner 252939a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, BotNotZero, LTZ, HiPart); 253039a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Hi = DAG.getConstant(0, NVT); 253139a8f336305a492fc6d2625f39f08968185616d2Chris Lattner break; 253239a8f336305a492fc6d2625f39f08968185616d2Chris Lattner } 2533edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner 25343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::LOAD: { 25353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Ch = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 25363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Ptr = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 25372d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Lo = DAG.getLoad(NVT, Ch, Ptr, Node->getOperand(2)); 25383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 25393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Increment the pointer to the other half. 254038d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner unsigned IncrementSize = MVT::getSizeInBits(Lo.getValueType())/8; 25413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 25423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner getIntPtrConstant(IncrementSize)); 25432d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth //Is this safe? declaring that the two parts of the split load 25442d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth //are from the same instruction? 25452d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Hi = DAG.getLoad(NVT, Ch, Ptr, Node->getOperand(2)); 2546ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner 2547ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // Build a factor node to remember that this load is independent of the 2548ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // other one. 2549ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner SDOperand TF = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 2550ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi.getValue(1)); 2551edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 25523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remember that we legalized the chain. 2553ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner AddLegalizedOperand(Op.getValue(1), TF); 25543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!TLI.isLittleEndian()) 25553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::swap(Lo, Hi); 25563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 25573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2558d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner case ISD::TAILCALL: 25593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CALL: { 25603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Chain = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 25613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Callee = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 25623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 25633d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner bool Changed = false; 25643d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 25653d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) { 25663d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 25673d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 25683d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 25693d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 25703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(Node->getNumValues() == 2 && Op.ResNo == 0 && 25713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Can only expand a call once so far, not i64 -> i16!"); 25723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 25733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<MVT::ValueType> RetTyVTs; 25743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.reserve(3); 25753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(NVT); 25763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(NVT); 25773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(MVT::Other); 2578d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner SDNode *NC = DAG.getCall(RetTyVTs, Chain, Callee, Ops, 2579d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner Node->getOpcode() == ISD::TAILCALL); 25803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = SDOperand(NC, 0); 25813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = SDOperand(NC, 1); 25823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 25833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Insert the new chain mapping. 2584e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner AddLegalizedOperand(Op.getValue(1), Hi.getValue(2)); 25853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 25863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 25873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::AND: 25883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::OR: 25893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::XOR: { // Simple logical operators -> two trivial pieces. 25903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LL, LH, RL, RH; 25913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), LL, LH); 25923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), RL, RH); 25933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(Node->getOpcode(), NVT, LL, RL); 25943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getNode(Node->getOpcode(), NVT, LH, RH); 25953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 25963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 25973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SELECT: { 25983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand C, LL, LH, RL, RH; 259947e9223e06390897c3834f8c527001df392570ffChris Lattner 260047e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 260147e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 260247e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 260347e9223e06390897c3834f8c527001df392570ffChris Lattner C = LegalizeOp(Node->getOperand(0)); // Legalize the condition. 260447e9223e06390897c3834f8c527001df392570ffChris Lattner break; 260547e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 260647e9223e06390897c3834f8c527001df392570ffChris Lattner C = PromoteOp(Node->getOperand(0)); // Promote the condition. 260747e9223e06390897c3834f8c527001df392570ffChris Lattner break; 260847e9223e06390897c3834f8c527001df392570ffChris Lattner } 26093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), LL, LH); 26103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(2), RL, RH); 26113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, C, LL, RL); 26123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, C, LH, RH); 26133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 26143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 26153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SIGN_EXTEND: { 261606098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner SDOperand In; 261706098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 261806098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Expand: assert(0 && "expand-expand not implemented yet!"); 261906098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Legal: In = LegalizeOp(Node->getOperand(0)); break; 262006098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Promote: 262106098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner In = PromoteOp(Node->getOperand(0)); 262206098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner // Emit the appropriate sign_extend_inreg to get the value we want. 262306098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner In = DAG.getNode(ISD::SIGN_EXTEND_INREG, In.getValueType(), In, 262415e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner DAG.getValueType(Node->getOperand(0).getValueType())); 262506098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner break; 262606098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner } 262706098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner 26283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The low part is just a sign extension of the input (which degenerates to 26293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // a copy). 263006098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner Lo = DAG.getNode(ISD::SIGN_EXTEND, NVT, In); 2631edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 26323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The high part is obtained by SRA'ing all but one of the bits of the lo 26333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // part. 26342dad454af674cb41a14a85ad6ce5c85c43959acdChris Lattner unsigned LoSize = MVT::getSizeInBits(Lo.getValueType()); 263527ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner Hi = DAG.getNode(ISD::SRA, NVT, Lo, DAG.getConstant(LoSize-1, 263627ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner TLI.getShiftAmountTy())); 26373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 26383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 263906098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case ISD::ZERO_EXTEND: { 264006098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner SDOperand In; 264106098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 264206098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Expand: assert(0 && "expand-expand not implemented yet!"); 264306098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Legal: In = LegalizeOp(Node->getOperand(0)); break; 264406098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Promote: 264506098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner In = PromoteOp(Node->getOperand(0)); 264606098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner // Emit the appropriate zero_extend_inreg to get the value we want. 264723993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner In = DAG.getZeroExtendInReg(In, Node->getOperand(0).getValueType()); 264806098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner break; 264906098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner } 265006098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner 26513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The low part is just a zero extension of the input (which degenerates to 26523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // a copy). 2653dea29e25c32d2651e2efaff67bc30803ea24d991Chris Lattner Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, In); 2654edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 26553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The high part is just a zero. 26563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getConstant(0, NVT); 26573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 265806098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner } 26594e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // These operators cannot be expanded directly, emit them as calls to 26604e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // library functions. 26614e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner case ISD::FP_TO_SINT: 26624e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner if (Node->getOperand(0).getValueType() == MVT::f32) 266377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixsfdi", Node, Hi); 26644e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner else 266577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixdfdi", Node, Hi); 26664e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner break; 26674e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner case ISD::FP_TO_UINT: 26684e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner if (Node->getOperand(0).getValueType() == MVT::f32) 266977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixunssfdi", Node, Hi); 26704e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner else 267177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixunsdfdi", Node, Hi); 26724e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner break; 26734e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner 2674e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SHL: 2675e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 267677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SHL, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 2677e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 26784759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 26794759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner // If this target supports SHL_PARTS, use it. 26804759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner if (TLI.getOperationAction(ISD::SHL_PARTS, NVT) == TargetLowering::Legal) { 26815b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner ExpandShiftParts(ISD::SHL_PARTS, Node->getOperand(0), Node->getOperand(1), 26825b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Lo, Hi); 26834759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner break; 26844759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner } 26854759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 2686e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 268777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__ashldi3", Node, Hi); 2688e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 2689e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2690e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SRA: 2691e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 269277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SRA, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 2693e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 26944759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 26954759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner // If this target supports SRA_PARTS, use it. 26964759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner if (TLI.getOperationAction(ISD::SRA_PARTS, NVT) == TargetLowering::Legal) { 26975b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner ExpandShiftParts(ISD::SRA_PARTS, Node->getOperand(0), Node->getOperand(1), 26985b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Lo, Hi); 26994759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner break; 27004759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner } 27014759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 2702e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 270377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__ashrdi3", Node, Hi); 2704e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 2705e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SRL: 2706e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 270777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SRL, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 2708e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 27094759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 27104759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner // If this target supports SRL_PARTS, use it. 27114759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner if (TLI.getOperationAction(ISD::SRL_PARTS, NVT) == TargetLowering::Legal) { 27125b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner ExpandShiftParts(ISD::SRL_PARTS, Node->getOperand(0), Node->getOperand(1), 27135b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Lo, Hi); 27144759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner break; 27154759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner } 27164759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 2717e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 271877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__lshrdi3", Node, Hi); 2719e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 2720e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2721edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman case ISD::ADD: 27224759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner ExpandByParts(ISD::ADD_PARTS, Node->getOperand(0), Node->getOperand(1), 27234759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner Lo, Hi); 272484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 272584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::SUB: 27264759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner ExpandByParts(ISD::SUB_PARTS, Node->getOperand(0), Node->getOperand(1), 27274759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner Lo, Hi); 272884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 2729c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman case ISD::MUL: { 2730c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman if (TLI.getOperationAction(ISD::MULHU, NVT) == TargetLowering::Legal) { 2731c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman SDOperand LL, LH, RL, RH; 2732c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman ExpandOp(Node->getOperand(0), LL, LH); 2733c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman ExpandOp(Node->getOperand(1), RL, RH); 2734c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); 2735c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman RH = DAG.getNode(ISD::MUL, NVT, LL, RH); 2736c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman LH = DAG.getNode(ISD::MUL, NVT, LH, RL); 2737c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); 2738c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); 2739c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 2740c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman } else { 2741c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Lo = ExpandLibCall("__muldi3" , Node, Hi); break; 2742c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman } 2743c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman break; 2744c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman } 274577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::SDIV: Lo = ExpandLibCall("__divdi3" , Node, Hi); break; 274677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::UDIV: Lo = ExpandLibCall("__udivdi3", Node, Hi); break; 274777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::SREM: Lo = ExpandLibCall("__moddi3" , Node, Hi); break; 274877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::UREM: Lo = ExpandLibCall("__umoddi3", Node, Hi); break; 27493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 27503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 27513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remember in a map if the values will be reused later. 27523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!Node->hasOneUse()) { 27533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isNew = ExpandedNodes.insert(std::make_pair(Op, 27543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::make_pair(Lo, Hi))).second; 27553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isNew && "Value already expanded?!?"); 27563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 27573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 27583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 27593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 27603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 27613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 27629c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnervoid SelectionDAG::Legalize() { 27633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 27643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 27659c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SelectionDAGLegalize(*this).Run(); 27663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 27673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2768