LegalizeDAG.cpp revision 9d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209
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); 127e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner bool ExpandShift(unsigned Opc, SDOperand Op, SDOperand Amt, 128e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand &Lo, SDOperand &Hi); 1295b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner void ExpandShiftParts(unsigned NodeOp, SDOperand Op, SDOperand Amt, 1305b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner SDOperand &Lo, SDOperand &Hi); 1315b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner void ExpandByParts(unsigned NodeOp, SDOperand LHS, SDOperand RHS, 1324759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner SDOperand &Lo, SDOperand &Hi); 133e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 134b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner void SpliceCallInto(const SDOperand &CallResult, SDNode *OutChain); 135b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner 1363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand getIntPtrConstant(uint64_t Val) { 1373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return DAG.getConstant(Val, TLI.getPointerTy()); 1383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1439c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris LattnerSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag) 1449c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner : TLI(dag.getTargetLoweringInfo()), DAG(dag), 1459c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner ValueTypeActions(TLI.getValueTypeActions()) { 1463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::LAST_VALUETYPE <= 16 && 1473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 1483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 1513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand OldRoot = DAG.getRoot(); 1523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand NewRoot = LegalizeOp(OldRoot); 1533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner DAG.setRoot(NewRoot); 1543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandedNodes.clear(); 1563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 15771c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner PromotedNodes.clear(); 1583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 16062fd269c146d9023efe32644e44cd97b88631d4fChris Lattner DAG.RemoveDeadNodes(OldRoot.Val); 1613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris LattnerSDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { 164e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner assert(getTypeAction(Op.getValueType()) == Legal && 165e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner "Caller should expand or promote operands that are not legal!"); 16645982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner SDNode *Node = Op.Val; 167e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 1683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If this operation defines any values that cannot be represented in a 169e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner // register on this target, make sure to expand or promote them. 17045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (Node->getNumValues() > 1) { 17145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 17245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner switch (getTypeAction(Node->getValueType(i))) { 1733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: break; // Nothing to do. 1743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 1753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand T1, T2; 1763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Op.getValue(i), T1, T2); 1773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(LegalizedNodes.count(Op) && 1783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Expansion didn't add legal operands!"); 1793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return LegalizedNodes[Op]; 1803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 18203c8546ec57523970874917854a2fb77b1ff598eChris Lattner PromoteOp(Op.getValue(i)); 18303c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(LegalizedNodes.count(Op) && 18403c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Expansion didn't add legal operands!"); 18503c8546ec57523970874917854a2fb77b1ff598eChris Lattner return LegalizedNodes[Op]; 1863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 18945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 19045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 191e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::map<SDOperand, SDOperand>::iterator I = LegalizedNodes.find(Op); 192e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 1933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 194fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner SDOperand Tmp1, Tmp2, Tmp3; 1953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Result = Op; 1973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 1993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 200d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 201d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner // If this is a target node, legalize it by legalizing the operands then 202d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner // passing it through. 203d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner std::vector<SDOperand> Ops; 204d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner bool Changed = false; 205d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 206d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 207d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Changed = Changed || Node->getOperand(i) != Ops.back(); 208d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 209d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Changed) 210d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getNumValues() == 1) 211d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Ops); 212d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner else { 213d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), 214d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Node->value_end()); 215d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner Result = DAG.getNode(Node->getOpcode(), VTs, Ops); 216d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 217d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 218d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 219d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner AddLegalizedOperand(Op.getValue(i), Result.getValue(i)); 220d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner return Result.getValue(Op.ResNo); 221d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 222d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner // Otherwise this is an unhandled builtin node. splat. 2233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 2243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(0 && "Do not know how to legalize this operator!"); 2253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner abort(); 2263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::EntryToken: 2273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::FrameIndex: 2283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::GlobalAddress: 22903c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::ExternalSymbol: 23069a52155d2eff066b49dbac385113002fd9dba14Chris Lattner case ISD::ConstantPool: // Nothing to do. 2313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(getTypeAction(Node->getValueType(0)) == Legal && 2323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "This must be legal!"); 2333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 23469a52155d2eff066b49dbac385113002fd9dba14Chris Lattner case ISD::CopyFromReg: 23569a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 23669a52155d2eff066b49dbac385113002fd9dba14Chris Lattner if (Tmp1 != Node->getOperand(0)) 23769a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Result = DAG.getCopyFromReg(cast<RegSDNode>(Node)->getReg(), 23869a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Node->getValueType(0), Tmp1); 23913c184de29c09294ed63b01ac43e1b46c049278eChris Lattner else 24013c184de29c09294ed63b01ac43e1b46c049278eChris Lattner Result = Op.getValue(0); 24113c184de29c09294ed63b01ac43e1b46c049278eChris Lattner 24213c184de29c09294ed63b01ac43e1b46c049278eChris Lattner // Since CopyFromReg produces two values, make sure to remember that we 24313c184de29c09294ed63b01ac43e1b46c049278eChris Lattner // legalized both of them. 24413c184de29c09294ed63b01ac43e1b46c049278eChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 24513c184de29c09294ed63b01ac43e1b46c049278eChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 24613c184de29c09294ed63b01ac43e1b46c049278eChris Lattner return Result.getValue(Op.ResNo); 24718c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner case ISD::ImplicitDef: 24818c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 24918c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner if (Tmp1 != Node->getOperand(0)) 2502ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner Result = DAG.getImplicitDef(Tmp1, cast<RegSDNode>(Node)->getReg()); 25118c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner break; 252fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: { 253fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman MVT::ValueType VT = Op.getValueType(); 254fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman switch (TLI.getOperationAction(ISD::UNDEF, VT)) { 255ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman default: assert(0 && "This action is not supported yet!"); 256ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Expand: 257ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Promote: 258fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman if (MVT::isInteger(VT)) 259fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getConstant(0, VT); 260fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman else if (MVT::isFloatingPoint(VT)) 261fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getConstantFP(0, VT); 262fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman else 263fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman assert(0 && "Unknown value type!"); 264fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 265ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Legal: 266fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 267fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman } 268fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 269fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman } 2703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::Constant: 2713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // We know we don't need to expand constants here, constants only have one 2723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // value and we check that it is fine above. 2733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // FIXME: Maybe we should handle things like targets that don't support full 2753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // 32-bit immediates? 2763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 2773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ConstantFP: { 2783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Spill FP immediates to the constant pool if the target cannot directly 2793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // codegen them. Targets often have some immediate values that can be 2803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // efficiently generated into an FP register without a load. We explicitly 2813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // leave these constants as ConstantFP nodes for the target to deal with. 2823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Check to see if this FP immediate is already legal. 2863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isLegal = false; 2873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(), 2883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner E = TLI.legal_fpimm_end(); I != E; ++I) 2893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (CFP->isExactlyValue(*I)) { 2903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner isLegal = true; 2913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 2923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!isLegal) { 2953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Otherwise we need to spill the constant to memory. 2963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MachineConstantPool *CP = DAG.getMachineFunction().getConstantPool(); 2973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool Extend = false; 2993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If a FP immediate is precise when represented as a float, we put it 3013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // into the constant pool as a float, even if it's is statically typed 3023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // as a double. 3033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MVT::ValueType VT = CFP->getValueType(0); 3043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isDouble = VT == MVT::f64; 3053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ConstantFP *LLVMC = ConstantFP::get(isDouble ? Type::DoubleTy : 3063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Type::FloatTy, CFP->getValue()); 30799939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner if (isDouble && CFP->isExactlyValue((float)CFP->getValue()) && 30899939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner // Only do this if the target has a native EXTLOAD instruction from 30999939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner // f32. 31099939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner TLI.getOperationAction(ISD::EXTLOAD, 31199939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner MVT::f32) == TargetLowering::Legal) { 3123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LLVMC = cast<ConstantFP>(ConstantExpr::getCast(LLVMC, Type::FloatTy)); 3133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner VT = MVT::f32; 3143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Extend = true; 3153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 316edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 3173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand CPIdx = DAG.getConstantPool(CP->getConstantPoolIndex(LLVMC), 3183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TLI.getPointerTy()); 319f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner if (Extend) { 320f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::EXTLOAD, MVT::f64, DAG.getEntryNode(), CPIdx, 3212d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth DAG.getSrcValue(NULL), MVT::f32); 322f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner } else { 32352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getLoad(VT, DAG.getEntryNode(), CPIdx, 32452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner DAG.getSrcValue(NULL)); 325f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner } 3263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 3273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 3283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 329a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner case ISD::TokenFactor: { 330a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner std::vector<SDOperand> Ops; 331a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner bool Changed = false; 332a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 3331e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner SDOperand Op = Node->getOperand(i); 3341e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner // Fold single-use TokenFactor nodes into this token factor as we go. 335e131e5b81e5853f3c2a8c63651898ecd37eaf6f8Chris Lattner // FIXME: This is something that the DAGCombiner should do!! 3361e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner if (Op.getOpcode() == ISD::TokenFactor && Op.hasOneUse()) { 3371e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Changed = true; 3381e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner for (unsigned j = 0, e = Op.getNumOperands(); j != e; ++j) 3391e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Ops.push_back(LegalizeOp(Op.getOperand(j))); 3401e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner } else { 3411e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Ops.push_back(LegalizeOp(Op)); // Legalize the operands 3421e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Changed |= Ops[i] != Op; 3431e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner } 344a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner } 345a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner if (Changed) 346a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Ops); 347a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner break; 348a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner } 349a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner 35016cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_START: 35116cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 3523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 353128b52d3d75f4b74367de43e891cd98b5a9b5483Chris Lattner // Do not try to legalize the target-specific arguments (#1+) 35445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner Tmp2 = Node->getOperand(0); 35545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (Tmp1 != Tmp2) { 35688de6e77bfadea8962b017f372658204ab71448cChris Lattner Node->setAdjCallChain(Tmp1); 35745982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner 35845982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // If moving the operand from pointing to Tmp2 dropped its use count to 1, 35945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // this will cause the maps used to memoize results to get confused. 36045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Create and add a dummy use, just to increase its use count. This will 36145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // be removed at the end of legalize when dead nodes are removed. 36245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (Tmp2.Val->hasOneUse()) 36345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner DAG.getNode(ISD::PCMARKER, MVT::Other, Tmp2, 36445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner DAG.getConstant(0, MVT::i32)); 36545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner } 36616cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // Note that we do not create new CALLSEQ_DOWN/UP nodes here. These 36788de6e77bfadea8962b017f372658204ab71448cChris Lattner // nodes are treated specially and are mutated in place. This makes the dag 36888de6e77bfadea8962b017f372658204ab71448cChris Lattner // legalization process more efficient and also makes libcall insertion 36988de6e77bfadea8962b017f372658204ab71448cChris Lattner // easier. 3703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 371fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner case ISD::DYNAMIC_STACKALLOC: 372fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 373fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the size. 374fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the alignment. 375fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 376adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner Tmp3 != Node->getOperand(2)) { 377adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), Node->value_end()); 378adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner std::vector<SDOperand> Ops; 379adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 380adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner Result = DAG.getNode(ISD::DYNAMIC_STACKALLOC, VTs, Ops); 381adf6c2a0cb638e8b211200b57b927d16f6e1cfc4Chris Lattner } else 382513e52ec4e20048a8f491498d219a2669283f3bdChris Lattner Result = Op.getValue(0); 383fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner 384fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner // Since this op produces two values, make sure to remember that we 385fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner // legalized both of them. 386fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 387fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 388fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner return Result.getValue(Op.ResNo); 389fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner 390d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner case ISD::TAILCALL: 3913d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner case ISD::CALL: { 3923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 3933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 3943d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 3953d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner bool Changed = false; 3963d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 3973d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) { 3983d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 3993d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 4003d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 4013d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 4023d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || Changed) { 4033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<MVT::ValueType> RetTyVTs; 4043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.reserve(Node->getNumValues()); 4053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 406ebda942efcb86634a6581aae76a0d0c92c4a232eChris Lattner RetTyVTs.push_back(Node->getValueType(i)); 407d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner Result = SDOperand(DAG.getCall(RetTyVTs, Tmp1, Tmp2, Ops, 408d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner Node->getOpcode() == ISD::TAILCALL), 0); 40938d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner } else { 41038d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner Result = Result.getValue(0); 4113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 41238d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner // Since calls produce multiple values, make sure to remember that we 41338d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner // legalized all of them. 41438d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 41538d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner AddLegalizedOperand(SDOperand(Node, i), Result.getValue(i)); 41638d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner return Result.getValue(Op.ResNo); 4173d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 418c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner case ISD::BR: 419c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 420c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner if (Tmp1 != Node->getOperand(0)) 421c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner Result = DAG.getNode(ISD::BR, MVT::Other, Tmp1, Node->getOperand(1)); 422c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner break; 423c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner 424c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner case ISD::BRCOND: 425c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 42647e9223e06390897c3834f8c527001df392570ffChris Lattner 42747e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 42847e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 42947e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 43047e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the condition. 43147e9223e06390897c3834f8c527001df392570ffChris Lattner break; 43247e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 43347e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Promote the condition. 43447e9223e06390897c3834f8c527001df392570ffChris Lattner break; 43547e9223e06390897c3834f8c527001df392570ffChris Lattner } 436c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner // Basic block destination (Op#2) is always legal. 437c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 438c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Result = DAG.getNode(ISD::BRCOND, MVT::Other, Tmp1, Tmp2, 439c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Node->getOperand(2)); 440c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner break; 441411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case ISD::BRCONDTWOWAY: 442411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 443411e888c1b4155190c8cffe388631ee20693b309Chris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 444411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 445411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case Legal: 446411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the condition. 447411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 448411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case Promote: 449411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Promote the condition. 450411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 451411e888c1b4155190c8cffe388631ee20693b309Chris Lattner } 452411e888c1b4155190c8cffe388631ee20693b309Chris Lattner // If this target does not support BRCONDTWOWAY, lower it to a BRCOND/BR 453411e888c1b4155190c8cffe388631ee20693b309Chris Lattner // pair. 454411e888c1b4155190c8cffe388631ee20693b309Chris Lattner switch (TLI.getOperationAction(ISD::BRCONDTWOWAY, MVT::Other)) { 455411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case TargetLowering::Promote: 456411e888c1b4155190c8cffe388631ee20693b309Chris Lattner default: assert(0 && "This action is not supported yet!"); 457411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case TargetLowering::Legal: 458411e888c1b4155190c8cffe388631ee20693b309Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) { 459411e888c1b4155190c8cffe388631ee20693b309Chris Lattner std::vector<SDOperand> Ops; 460411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Ops.push_back(Tmp1); 461411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Ops.push_back(Tmp2); 462411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Ops.push_back(Node->getOperand(2)); 463411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Ops.push_back(Node->getOperand(3)); 464411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Result = DAG.getNode(ISD::BRCONDTWOWAY, MVT::Other, Ops); 465411e888c1b4155190c8cffe388631ee20693b309Chris Lattner } 466411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 467411e888c1b4155190c8cffe388631ee20693b309Chris Lattner case TargetLowering::Expand: 468411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Result = DAG.getNode(ISD::BRCOND, MVT::Other, Tmp1, Tmp2, 469411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Node->getOperand(2)); 470411e888c1b4155190c8cffe388631ee20693b309Chris Lattner Result = DAG.getNode(ISD::BR, MVT::Other, Result, Node->getOperand(3)); 471411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 472411e888c1b4155190c8cffe388631ee20693b309Chris Lattner } 473411e888c1b4155190c8cffe388631ee20693b309Chris Lattner break; 474c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner 4753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::LOAD: 4763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 4782d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 4793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || 4803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(1)) 48152d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getLoad(Node->getValueType(0), Tmp1, Tmp2, 48252d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(2)); 4838afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner else 4848afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner Result = SDOperand(Node, 0); 485edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 4868afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner // Since loads produce two values, make sure to remember that we legalized 4878afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner // both of them. 4888afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 4898afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 4908afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner return Result.getValue(Op.ResNo); 4913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4920f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::EXTLOAD: 4930f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::SEXTLOAD: 49401ff7216dd7829d4094754086baf28aa2d7149acChris Lattner case ISD::ZEXTLOAD: { 4950f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4960f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 4970f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 49801ff7216dd7829d4094754086baf28aa2d7149acChris Lattner MVT::ValueType SrcVT = cast<MVTSDNode>(Node)->getExtraValueType(); 49901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), SrcVT)) { 50001ff7216dd7829d4094754086baf28aa2d7149acChris Lattner default: assert(0 && "This action is not supported yet!"); 5011c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner case TargetLowering::Promote: 5021c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner assert(SrcVT == MVT::i1 && "Can only promote EXTLOAD from i1 -> i8!"); 5031c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), 5042d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Tmp1, Tmp2, Node->getOperand(2), MVT::i8); 5051c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner // Since loads produce two values, make sure to remember that we legalized 5061c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner // both of them. 5071c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 5081c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 5091c51c6ac13b5e68b099605021784c7f552dcce3cChris Lattner return Result.getValue(Op.ResNo); 510edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 51101ff7216dd7829d4094754086baf28aa2d7149acChris Lattner case TargetLowering::Legal: 51201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner if (Tmp1 != Node->getOperand(0) || 51301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner Tmp2 != Node->getOperand(1)) 51401ff7216dd7829d4094754086baf28aa2d7149acChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), 5152d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Tmp1, Tmp2, Node->getOperand(2), SrcVT); 51601ff7216dd7829d4094754086baf28aa2d7149acChris Lattner else 51701ff7216dd7829d4094754086baf28aa2d7149acChris Lattner Result = SDOperand(Node, 0); 51801ff7216dd7829d4094754086baf28aa2d7149acChris Lattner 51901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner // Since loads produce two values, make sure to remember that we legalized 52001ff7216dd7829d4094754086baf28aa2d7149acChris Lattner // both of them. 52101ff7216dd7829d4094754086baf28aa2d7149acChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 52201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 52301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner return Result.getValue(Op.ResNo); 52401ff7216dd7829d4094754086baf28aa2d7149acChris Lattner case TargetLowering::Expand: 5259d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth //f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 5269d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth if (SrcVT == MVT::f32 && Node->getValueType(0) == MVT::f64) { 5279d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth SDOperand Load = DAG.getLoad(SrcVT, Tmp1, Tmp2, Node->getOperand(2)); 5289d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth Result = 5299d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth DAG.getNode(ISD::FP_EXTEND, Node->getValueType(0), Load, SrcVT); 5309d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth if (Op.ResNo) 5319d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth return Load.getValue(1); 5329d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth return Result; 5339d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 53401ff7216dd7829d4094754086baf28aa2d7149acChris Lattner assert(Node->getOpcode() != ISD::EXTLOAD && 53501ff7216dd7829d4094754086baf28aa2d7149acChris Lattner "EXTLOAD should always be supported!"); 53601ff7216dd7829d4094754086baf28aa2d7149acChris Lattner // Turn the unsupported load into an EXTLOAD followed by an explicit 53701ff7216dd7829d4094754086baf28aa2d7149acChris Lattner // zero/sign extend inreg. 53801ff7216dd7829d4094754086baf28aa2d7149acChris Lattner Result = DAG.getNode(ISD::EXTLOAD, Node->getValueType(0), 5392d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Tmp1, Tmp2, Node->getOperand(2), SrcVT); 54023993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner SDOperand ValRes; 54123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner if (Node->getOpcode() == ISD::SEXTLOAD) 54223993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 54323993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result, SrcVT); 54423993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner else 54523993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner ValRes = DAG.getZeroExtendInReg(Result, SrcVT); 54601ff7216dd7829d4094754086baf28aa2d7149acChris Lattner AddLegalizedOperand(SDOperand(Node, 0), ValRes); 54701ff7216dd7829d4094754086baf28aa2d7149acChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 54801ff7216dd7829d4094754086baf28aa2d7149acChris Lattner if (Op.ResNo) 54901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner return Result.getValue(1); 55001ff7216dd7829d4094754086baf28aa2d7149acChris Lattner return ValRes; 55101ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 55201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner assert(0 && "Unreachable"); 55301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 5543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::EXTRACT_ELEMENT: 5553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Get both the low and high parts. 5563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 5573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (cast<ConstantSDNode>(Node->getOperand(1))->getValue()) 5583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = Tmp2; // 1 -> Hi 5593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner else 5603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = Tmp1; // 0 -> Lo 5613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 5633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CopyToReg: 5643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 565edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 5663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 5673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 5683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Legalize the incoming value (must be legal). 5693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 5703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 57118c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner Result = DAG.getCopyToReg(Tmp1, Tmp2, cast<RegSDNode>(Node)->getReg()); 5723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 573ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case Promote: 574ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 575ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Result = DAG.getCopyToReg(Tmp1, Tmp2, cast<RegSDNode>(Node)->getReg()); 576ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner break; 577ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case Expand: 5783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 579edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman ExpandOp(Node->getOperand(1), Lo, Hi); 58018c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner unsigned Reg = cast<RegSDNode>(Node)->getReg(); 581ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Lo = DAG.getCopyToReg(Tmp1, Lo, Reg); 582ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi = DAG.getCopyToReg(Tmp1, Hi, Reg+1); 583ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // Note that the copytoreg nodes are independent of each other. 584ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 5853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(Result.getValueType()) && 5863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Cannot expand multiple times yet (i64 -> i16)"); 5873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 5913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::RET: 5923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 5933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getNumOperands()) { 5943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case 2: // ret val 5953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 5963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 5973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 5988afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 5993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Tmp2); 6003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 6023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 6033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 6043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Lo, Hi); 605edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman break; 6063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 6088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 6098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Tmp2); 6108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 6113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case 1: // ret void 6143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 6153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1); 6163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: { // ret <values> 6183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<SDOperand> NewValues; 6193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Tmp1); 6203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) 6213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(i).getValueType())) { 6223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 6234e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner NewValues.push_back(LegalizeOp(Node->getOperand(i))); 6243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 6263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 6273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(i), Lo, Hi); 6283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Lo); 6293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Hi); 630edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman break; 6313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 6338b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "Can't promote multiple return value yet!"); 6343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, NewValues); 6363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::STORE: 6413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 6423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. 6433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 6445d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 64503c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (ConstantFPSDNode *CFP =dyn_cast<ConstantFPSDNode>(Node->getOperand(1))){ 6465d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner if (CFP->getValueType(0) == MVT::f32) { 6475d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner union { 6485d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner unsigned I; 6495d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner float F; 6505d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } V; 6515d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner V.F = CFP->getValue(); 6522d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, 6536d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner DAG.getConstant(V.I, MVT::i32), Tmp2, 65452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(3)); 6555d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } else { 6565d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner assert(CFP->getValueType(0) == MVT::f64 && "Unknown FP type!"); 6575d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner union { 6585d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner uint64_t I; 6595d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner double F; 6605d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } V; 6615d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner V.F = CFP->getValue(); 6622d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, 66352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner DAG.getConstant(V.I, MVT::i64), Tmp2, 66452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(3)); 6655d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } 66684734ce8ef1a21eb347d4deca0bf32d59001f751Chris Lattner Node = Result.Val; 6675d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } 6685d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner 6693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 6703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: { 6713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Val = LegalizeOp(Node->getOperand(1)); 6723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Val != Node->getOperand(1) || Tmp1 != Node->getOperand(0) || 6733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(2)) 67452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Val, Tmp2, 67552d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(3)); 6763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 67903c8546ec57523970874917854a2fb77b1ff598eChris Lattner // Truncate the value and store the result. 68003c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp3 = PromoteOp(Node->getOperand(1)); 68103c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Tmp1, Tmp3, Tmp2, 6822d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Node->getOperand(3), 6832d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Node->getOperand(1).getValueType()); 68403c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 68503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 6863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: 6873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 6883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 6893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 6903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!TLI.isLittleEndian()) 6913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::swap(Lo, Hi); 6923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 693edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Lo = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Lo, Tmp2, 694edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Node->getOperand(3)); 695ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner unsigned IncrementSize = MVT::getSizeInBits(Hi.getValueType())/8; 6963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getNode(ISD::ADD, Tmp2.getValueType(), Tmp2, 6973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner getIntPtrConstant(IncrementSize)); 6983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(Tmp2.getValueType()) && 6993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Pointers must be legal!"); 7002d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth //Again, claiming both parts of the store came form the same Instr 701edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Hi = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Hi, Tmp2, 702edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Node->getOperand(3)); 703ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 704ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner break; 7053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 70795762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth case ISD::PCMARKER: 70895762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 7092c8086f4b9916b2d02842be5e375276023225fbaChris Lattner if (Tmp1 != Node->getOperand(0)) 7102c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = DAG.getNode(ISD::PCMARKER, MVT::Other, Tmp1,Node->getOperand(1)); 71195762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth break; 7120f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::TRUNCSTORE: 7130f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 7140f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. 7150f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 7160f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 7170f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Legal: 7180f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 7190f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 7200f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp3 != Node->getOperand(2)) 72145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Tmp1, Tmp2, Tmp3, 7222d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Node->getOperand(3), 7230f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner cast<MVTSDNode>(Node)->getExtraValueType()); 7240f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 7250f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Promote: 7260f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Expand: 7270f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner assert(0 && "Cannot handle illegal TRUNCSTORE yet!"); 7280f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner } 7290f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 7302ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner case ISD::SELECT: 73147e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 73247e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 73347e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 73447e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the condition. 73547e9223e06390897c3834f8c527001df392570ffChris Lattner break; 73647e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 73747e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // Promote the condition. 73847e9223e06390897c3834f8c527001df392570ffChris Lattner break; 73947e9223e06390897c3834f8c527001df392570ffChris Lattner } 7403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // TrueVal 7412ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // FalseVal 74255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner 74355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), Tmp2.getValueType())) { 74455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action is not supported yet!"); 74555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 74655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 74755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp3 != Node->getOperand(2)) 74855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(ISD::SELECT, Node->getValueType(0), 74955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp1, Tmp2, Tmp3); 75055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 75155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Promote: { 75255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner MVT::ValueType NVT = 75355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TLI.getTypeToPromoteTo(ISD::SELECT, Tmp2.getValueType()); 75455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner unsigned ExtOp, TruncOp; 75555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (MVT::isInteger(Tmp2.getValueType())) { 75655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtOp = ISD::ZERO_EXTEND; 75755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TruncOp = ISD::TRUNCATE; 75855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } else { 75955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtOp = ISD::FP_EXTEND; 76055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TruncOp = ISD::FP_ROUND; 76155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 76255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner // Promote each of the values to the new type. 76355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp2 = DAG.getNode(ExtOp, NVT, Tmp2); 76455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp3 = DAG.getNode(ExtOp, NVT, Tmp3); 76555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner // Perform the larger operation, then round down. 76655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(ISD::SELECT, NVT, Tmp1, Tmp2,Tmp3); 76755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(TruncOp, Node->getValueType(0), Result); 76855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 76955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 77055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 7713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETCC: 7733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 7743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 7753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 7763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 7773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 7783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 779f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, Tmp2); 7803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 7828b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // LHS 7838b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // RHS 7848b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 7858b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // If this is an FP compare, the operands have already been extended. 7868b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isInteger(Node->getOperand(0).getValueType())) { 7878b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner MVT::ValueType VT = Node->getOperand(0).getValueType(); 78871c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 7898b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 7908b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Otherwise, we have to insert explicit sign or zero extends. Note 7918b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // that we could insert sign extends for ALL conditions, but zero extend 7928b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // is cheaper on many machines (an AND instead of two shifts), so prefer 7938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // it. 7948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 7958b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner default: assert(0 && "Unknown integer comparison!"); 7968b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETEQ: 7978b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETNE: 7988b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETUGE: 7998b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETUGT: 8008b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETULE: 8018b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETULT: 8028b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // ALL of these operations will work if we either sign or zero extend 8038b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // the operands (including the unsigned comparisons!). Zero extend is 8048b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // usually a simpler/cheaper operation, so prefer it. 80523993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp1 = DAG.getZeroExtendInReg(Tmp1, VT); 80623993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp2 = DAG.getZeroExtendInReg(Tmp2, VT); 8078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 8088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETGE: 8098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETGT: 8108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETLT: 8118b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETLE: 8128b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 8138b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2, VT); 8148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 8158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 8168b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 8178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 8188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 819f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, Tmp2); 8203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 821edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman case Expand: 8223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LHSLo, LHSHi, RHSLo, RHSHi; 8233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), LHSLo, LHSHi); 8243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), RHSLo, RHSHi); 8253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 8263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETEQ: 8273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETNE: 82808b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner if (RHSLo == RHSHi) 82908b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner if (ConstantSDNode *RHSCST = dyn_cast<ConstantSDNode>(RHSLo)) 83008b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner if (RHSCST->isAllOnesValue()) { 83108b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner // Comparison to -1. 83208b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner Tmp1 = DAG.getNode(ISD::AND, LHSLo.getValueType(), LHSLo, LHSHi); 833edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 83408b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner Node->getValueType(0), Tmp1, RHSLo); 835edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman break; 83608b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner } 83708b698e38db5ab5db44c0472e2a7f4f780887629Chris Lattner 8383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSLo, RHSLo); 8393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSHi, RHSHi); 8403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = DAG.getNode(ISD::OR, Tmp1.getValueType(), Tmp1, Tmp2); 841edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 842f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, 8433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner DAG.getConstant(0, Tmp1.getValueType())); 8443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 8453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 8465b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner // If this is a comparison of the sign bit, just look at the top part. 8475b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner // X > -1, x < 0 8485b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner if (ConstantSDNode *CST = dyn_cast<ConstantSDNode>(Node->getOperand(1))) 849edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman if ((cast<SetCCSDNode>(Node)->getCondition() == ISD::SETLT && 8505b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner CST->getValue() == 0) || // X < 0 8515b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner (cast<SetCCSDNode>(Node)->getCondition() == ISD::SETGT && 8525b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner (CST->isAllOnesValue()))) // X > -1 8535b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner return DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 8545b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner Node->getValueType(0), LHSHi, RHSHi); 8555b95ed652fcfe578aa8af4e21318fca989164e21Chris Lattner 8563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // FIXME: This generated code sucks. 8573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ISD::CondCode LowCC; 8583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 8593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: assert(0 && "Unknown integer setcc!"); 8603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETLT: 8613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 8623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETGT: 8633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 8643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETLE: 8653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 8663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETGE: 8673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 8683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 869edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 8703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 8713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 8723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 8733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 8743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 8753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 876f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Tmp1 = DAG.getSetCC(LowCC, Node->getValueType(0), LHSLo, RHSLo); 8773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 878f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), LHSHi, RHSHi); 879f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getSetCC(ISD::SETEQ, Node->getValueType(0), LHSHi, RHSHi); 880f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getNode(ISD::SELECT, Tmp1.getValueType(), 881f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result, Tmp1, Tmp2); 8823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 8833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 8843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 8853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 8863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 887e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMSET: 888e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMCPY: 889e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMMOVE: { 890deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Chain 891e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Pointer 892e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner 893e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner if (Node->getOpcode() == ISD::MEMSET) { // memset = ubyte 894e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner switch (getTypeAction(Node->getOperand(2).getValueType())) { 895e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Expand: assert(0 && "Cannot expand a byte!"); 896e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Legal: 897deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); 898e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 899e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Promote: 900deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp3 = PromoteOp(Node->getOperand(2)); 901e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 902e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 903e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } else { 904edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Tmp3 = LegalizeOp(Node->getOperand(2)); // memcpy/move = pointer, 905e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 906272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner 907272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner SDOperand Tmp4; 908272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner switch (getTypeAction(Node->getOperand(3).getValueType())) { 909e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Expand: assert(0 && "Cannot expand this yet!"); 910e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Legal: 911e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp4 = LegalizeOp(Node->getOperand(3)); 912e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 913e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Promote: 914e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp4 = PromoteOp(Node->getOperand(3)); 915272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner break; 916272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner } 917272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner 918272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner SDOperand Tmp5; 919272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner switch (getTypeAction(Node->getOperand(4).getValueType())) { // uint 920272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Expand: assert(0 && "Cannot expand this yet!"); 921272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Legal: 922272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner Tmp5 = LegalizeOp(Node->getOperand(4)); 923272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner break; 924272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Promote: 925e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp5 = PromoteOp(Node->getOperand(4)); 926e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 927e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 92855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner 92955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), MVT::Other)) { 93055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action not implemented for this operation!"); 93155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 932e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 933e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 != Node->getOperand(2) || Tmp4 != Node->getOperand(3) || 934e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp5 != Node->getOperand(4)) { 935e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::vector<SDOperand> Ops; 936e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 937e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Ops.push_back(Tmp4); Ops.push_back(Tmp5); 938e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Ops); 939e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 94055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 94155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Expand: { 942e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // Otherwise, the target does not support this operation. Lower the 943e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // operation to an explicit libcall as appropriate. 944e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner MVT::ValueType IntPtr = TLI.getPointerTy(); 945e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner const Type *IntPtrTy = TLI.getTargetData().getIntPtrType(); 946e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::vector<std::pair<SDOperand, const Type*> > Args; 947e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner 9483bfbf4ea990930d153e58e153f319408341a94feReid Spencer const char *FnName = 0; 949e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (Node->getOpcode() == ISD::MEMSET) { 950e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp2, IntPtrTy)); 951e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // Extend the ubyte argument to be an int value for the call. 952e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 = DAG.getNode(ISD::ZERO_EXTEND, MVT::i32, Tmp3); 953e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp3, Type::IntTy)); 954e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp4, IntPtrTy)); 955e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner 956e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner FnName = "memset"; 957e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } else if (Node->getOpcode() == ISD::MEMCPY || 958e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Node->getOpcode() == ISD::MEMMOVE) { 959e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp2, IntPtrTy)); 960e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp3, IntPtrTy)); 961e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp4, IntPtrTy)); 962e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner FnName = Node->getOpcode() == ISD::MEMMOVE ? "memmove" : "memcpy"; 963e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } else { 964e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner assert(0 && "Unknown op!"); 965e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 96645982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner 967e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::pair<SDOperand,SDOperand> CallResult = 968adf6a965a321372c640845407195594835921eb4Chris Lattner TLI.LowerCallTo(Tmp1, Type::VoidTy, false, CallingConv::C, false, 969e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner DAG.getExternalSymbol(FnName, IntPtr), Args, DAG); 970e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Result = LegalizeOp(CallResult.second); 97155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 97255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 97355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Custom: 97455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner std::vector<SDOperand> Ops; 97555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 97655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Ops.push_back(Tmp4); Ops.push_back(Tmp5); 97755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Ops); 97850381b6c4180e9a2b983d4623da2e485cd768632Chris Lattner Result = TLI.LowerOperation(Result, DAG); 97955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = LegalizeOp(Result); 98055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 981e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 982e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner break; 983e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 98452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner 98552d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner case ISD::READPORT: 98652d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 98752d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 9886d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 9893e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) { 9903e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), Node->value_end()); 9913e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner std::vector<SDOperand> Ops; 9923e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Ops.push_back(Tmp1); 9933e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Ops.push_back(Tmp2); 9943e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Result = DAG.getNode(ISD::READPORT, VTs, Ops); 9953e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner } else 99652d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = SDOperand(Node, 0); 99752d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner // Since these produce two values, make sure to remember that we legalized 99852d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner // both of them. 99952d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 100052d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 100152d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner return Result.getValue(Op.ResNo); 100252d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner case ISD::WRITEPORT: 100352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 100452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 100552d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); 100652d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 100752d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Tmp3 != Node->getOperand(2)) 100852d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Tmp1, Tmp2, Tmp3); 100952d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner break; 101052d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner 10116d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case ISD::READIO: 10126d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 10136d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 10146d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 10156d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) { 10166d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Custom: 10176d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner default: assert(0 && "This action not implemented for this operation!"); 10186d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Legal: 10193e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) { 10203e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), Node->value_end()); 10213e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner std::vector<SDOperand> Ops; 10223e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Ops.push_back(Tmp1); 10233e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Ops.push_back(Tmp2); 10243e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner Result = DAG.getNode(ISD::READPORT, VTs, Ops); 10253e01136f9fc2e1db9207d278002e76e6175783e9Chris Lattner } else 10266d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = SDOperand(Node, 0); 10276d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 10286d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Expand: 10296d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner // Replace this with a load from memory. 10306d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = DAG.getLoad(Node->getValueType(0), Node->getOperand(0), 10316d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Node->getOperand(1), DAG.getSrcValue(NULL)); 10326d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = LegalizeOp(Result); 10336d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 10346d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner } 10356d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 10366d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner // Since these produce two values, make sure to remember that we legalized 10376d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner // both of them. 10386d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 10396d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 10406d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner return Result.getValue(Op.ResNo); 10416d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 10426d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case ISD::WRITEIO: 10436d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 10446d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 10456d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); 10466d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 10476d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), 10486d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Node->getOperand(1).getValueType())) { 10496d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Custom: 10506d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner default: assert(0 && "This action not implemented for this operation!"); 10516d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Legal: 10526d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 10536d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Tmp3 != Node->getOperand(2)) 10546d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Tmp1, Tmp2, Tmp3); 10556d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 10566d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner case TargetLowering::Expand: 10576d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner // Replace this with a store to memory. 10586d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Node->getOperand(0), 10596d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Node->getOperand(1), Node->getOperand(2), 10606d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner DAG.getSrcValue(NULL)); 10616d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner Result = LegalizeOp(Result); 10626d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 10636d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner } 10646d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner break; 10656d5b8e16462859333db9ad984f05ec2ed1f48f4aChris Lattner 106684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::ADD_PARTS: 10675b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner case ISD::SUB_PARTS: 10685b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner case ISD::SHL_PARTS: 10695b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner case ISD::SRA_PARTS: 10705b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner case ISD::SRL_PARTS: { 107184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner std::vector<SDOperand> Ops; 107284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner bool Changed = false; 107384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 107484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 107584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 107684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner } 1077e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (Changed) { 1078e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner std::vector<MVT::ValueType> VTs(Node->value_begin(), Node->value_end()); 1079e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Result = DAG.getNode(Node->getOpcode(), VTs, Ops); 1080e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner } 10812c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 10822c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Since these produce multiple values, make sure to remember that we 10832c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // legalized all of them. 10842c8086f4b9916b2d02842be5e375276023225fbaChris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 10852c8086f4b9916b2d02842be5e375276023225fbaChris Lattner AddLegalizedOperand(SDOperand(Node, i), Result.getValue(i)); 10862c8086f4b9916b2d02842be5e375276023225fbaChris Lattner return Result.getValue(Op.ResNo); 108784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner } 10882c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 10892c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Binary operators 10903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ADD: 10913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SUB: 10923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::MUL: 1093c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman case ISD::MULHS: 1094c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman case ISD::MULHU: 10953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::UDIV: 10963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SDIV: 10973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::AND: 10983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::OR: 10993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::XOR: 110003c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SHL: 110103c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SRL: 110203c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SRA: 11033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 11043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 11053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || 11063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(1)) 11073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1,Tmp2); 11083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1109edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 1110c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case ISD::UREM: 1111c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case ISD::SREM: 1112c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 1113c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 1114c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) { 1115c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case TargetLowering::Legal: 1116c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman if (Tmp1 != Node->getOperand(0) || 1117c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Tmp2 != Node->getOperand(1)) 1118edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, 1119c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Tmp2); 1120c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman break; 1121c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case TargetLowering::Promote: 1122c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case TargetLowering::Custom: 1123c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman assert(0 && "Cannot promote/custom handle this yet!"); 1124c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman case TargetLowering::Expand: { 1125c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman MVT::ValueType VT = Node->getValueType(0); 1126c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman unsigned Opc = (Node->getOpcode() == ISD::UREM) ? ISD::UDIV : ISD::SDIV; 1127c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Result = DAG.getNode(Opc, VT, Tmp1, Tmp2); 1128c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Result = DAG.getNode(ISD::MUL, VT, Result, Tmp2); 1129c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman Result = DAG.getNode(ISD::SUB, VT, Tmp1, Result); 1130c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman } 1131c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman break; 1132c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman } 1133c105e19864f2792c52bc6bb765d365308f38f461Nate Begeman break; 11342c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 1135691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTPOP: 1136691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTTZ: 1137691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTLZ: 1138691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Tmp1 = LegalizeOp(Node->getOperand(0)); // Op 1139691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) { 1140691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case TargetLowering::Legal: 1141691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth if (Tmp1 != Node->getOperand(0)) 1142691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 1143691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1144691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case TargetLowering::Promote: { 1145691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth MVT::ValueType OVT = Tmp1.getValueType(); 1146691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth MVT::ValueType NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 1147edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner 1148edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner // Zero extend the argument. 1149691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, NVT, Tmp1); 1150691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth // Perform the larger operation, then subtract if needed. 1151691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Tmp1 = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 1152691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth switch(Node->getOpcode()) 1153691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth { 1154691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTPOP: 1155691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Result = Tmp1; 1156691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1157691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTTZ: 1158691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 115939a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Tmp2 = DAG.getSetCC(ISD::SETEQ, TLI.getSetCCResultTy(), Tmp1, 1160691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth DAG.getConstant(getSizeInBits(NVT), NVT)); 1161691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Result = DAG.getNode(ISD::SELECT, NVT, Tmp2, 1162691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth DAG.getConstant(getSizeInBits(OVT),NVT), Tmp1); 1163691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1164691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case ISD::CTLZ: 1165691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth //Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 1166691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth Result = DAG.getNode(ISD::SUB, NVT, Tmp1, 1167691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth DAG.getConstant(getSizeInBits(NVT) - 1168691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth getSizeInBits(OVT), NVT)); 1169691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1170691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth } 1171691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1172691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth } 1173691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case TargetLowering::Custom: 1174691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth assert(0 && "Cannot custom handle this yet!"); 1175691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth case TargetLowering::Expand: 1176ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth switch(Node->getOpcode()) 1177ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth { 1178ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth case ISD::CTPOP: { 1179e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner static const uint64_t mask[6] = { 1180e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 1181e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 1182e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 1183e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner }; 1184ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth MVT::ValueType VT = Tmp1.getValueType(); 1185e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner MVT::ValueType ShVT = TLI.getShiftAmountTy(); 1186e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner unsigned len = getSizeInBits(VT); 1187e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 1188ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 1189e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner Tmp2 = DAG.getConstant(mask[i], VT); 1190e3ef0a8b9f79d77116e888ffe51730c8279b7363Chris Lattner Tmp3 = DAG.getConstant(1ULL << i, ShVT); 1191ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth Tmp1 = DAG.getNode(ISD::ADD, VT, 1192ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth DAG.getNode(ISD::AND, VT, Tmp1, Tmp2), 1193ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth DAG.getNode(ISD::AND, VT, 1194ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth DAG.getNode(ISD::SRL, VT, Tmp1, Tmp3), 1195ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth Tmp2)); 1196ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth } 1197ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth Result = Tmp1; 1198ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth break; 1199ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth } 120057ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina case ISD::CTLZ: { 120157ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina /* for now, we do this: 12025c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner x = x | (x >> 1); 12035c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner x = x | (x >> 2); 12045c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner ... 12055c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner x = x | (x >>16); 12065c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner x = x | (x >>32); // for 64-bit input 12075c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner return popcount(~x); 120857ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina 12095c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner but see also: http://www.hackersdelight.org/HDcode/nlz.cc */ 12105c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner MVT::ValueType VT = Tmp1.getValueType(); 121157ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina MVT::ValueType ShVT = TLI.getShiftAmountTy(); 121257ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina unsigned len = getSizeInBits(VT); 121357ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 121457ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina Tmp3 = DAG.getConstant(1ULL << i, ShVT); 121557ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina Tmp1 = DAG.getNode(ISD::OR, VT, Tmp1, 121657ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina DAG.getNode(ISD::SRL, VT, Tmp1, Tmp3)); 121757ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina } 121857ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina Tmp3 = DAG.getNode(ISD::XOR, VT, Tmp1, DAG.getConstant(~0ULL, VT)); 12195c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner Result = LegalizeOp(DAG.getNode(ISD::CTPOP, VT, Tmp3)); 122018aa680a96c49cf9e28b52f5ab3f2c4f98793636Chris Lattner break; 122157ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina } 122257ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina case ISD::CTTZ: { 1223d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // for now, we use: { return popcount(~x & (x - 1)); } 1224d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // unless the target has ctlz but not ctpop, in which case we use: 1225d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // { return 32 - nlz(~x & (x-1)); } 1226d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // see also http://www.hackersdelight.org/HDcode/ntz.cc 12275c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner MVT::ValueType VT = Tmp1.getValueType(); 12285c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner Tmp2 = DAG.getConstant(~0ULL, VT); 12295c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner Tmp3 = DAG.getNode(ISD::AND, VT, 12305c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner DAG.getNode(ISD::XOR, VT, Tmp1, Tmp2), 12315c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner DAG.getNode(ISD::SUB, VT, Tmp1, 12325c33c9a166c2d68d64c68d8097598d09d9af6c20Chris Lattner DAG.getConstant(1, VT))); 1233d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman // If ISD::CTLZ is legal and CTPOP isn't, then do that instead 1234d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman if (TLI.getOperationAction(ISD::CTPOP, VT) != TargetLowering::Legal && 1235d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman TLI.getOperationAction(ISD::CTLZ, VT) == TargetLowering::Legal) { 1236d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman Result = LegalizeOp(DAG.getNode(ISD::SUB, VT, 1237d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman DAG.getConstant(getSizeInBits(VT), VT), 1238d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman DAG.getNode(ISD::CTLZ, VT, Tmp3))); 1239d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman } else { 1240d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman Result = LegalizeOp(DAG.getNode(ISD::CTPOP, VT, Tmp3)); 1241d7c4a4a6c048d4174b8795598f50fd76c30731edNate Begeman } 124218aa680a96c49cf9e28b52f5ab3f2c4f98793636Chris Lattner break; 124357ff7e5f6479b43828406a6723b7dde6f673f48cDuraid Madina } 1244ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth default: 1245ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth assert(0 && "Cannot expand this yet!"); 1246ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth break; 1247ded10bfb46aeacf02acec0018a0b970c1f932a32Andrew Lenharth } 1248691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1249691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth } 1250691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth break; 1251691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 12522c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Unary operators 12532c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case ISD::FABS: 12542c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case ISD::FNEG: 1255da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FSQRT: 1256da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FSIN: 1257da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FCOS: 12582c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 12592c8086f4b9916b2d02842be5e375276023225fbaChris Lattner switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) { 12602c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case TargetLowering::Legal: 12612c8086f4b9916b2d02842be5e375276023225fbaChris Lattner if (Tmp1 != Node->getOperand(0)) 12622c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 12632c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 12642c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case TargetLowering::Promote: 12652c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case TargetLowering::Custom: 12662c8086f4b9916b2d02842be5e375276023225fbaChris Lattner assert(0 && "Cannot promote/custom handle this yet!"); 12672c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case TargetLowering::Expand: 1268f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner switch(Node->getOpcode()) { 1269f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FNEG: { 12702c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Expand Y = FNEG(X) -> Y = SUB -0.0, X 12712c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Tmp2 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 12722c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = LegalizeOp(DAG.getNode(ISD::SUB, Node->getValueType(0), 12732c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Tmp2, Tmp1)); 1274f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner break; 1275f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner } 1276f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FABS: { 12774af6e0d7836126630f579b0a34f054321187f00bChris Lattner // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 12784af6e0d7836126630f579b0a34f054321187f00bChris Lattner MVT::ValueType VT = Node->getValueType(0); 12794af6e0d7836126630f579b0a34f054321187f00bChris Lattner Tmp2 = DAG.getConstantFP(0.0, VT); 12804af6e0d7836126630f579b0a34f054321187f00bChris Lattner Tmp2 = DAG.getSetCC(ISD::SETUGT, TLI.getSetCCResultTy(), Tmp1, Tmp2); 12814af6e0d7836126630f579b0a34f054321187f00bChris Lattner Tmp3 = DAG.getNode(ISD::FNEG, VT, Tmp1); 12824af6e0d7836126630f579b0a34f054321187f00bChris Lattner Result = DAG.getNode(ISD::SELECT, VT, Tmp2, Tmp1, Tmp3); 12834af6e0d7836126630f579b0a34f054321187f00bChris Lattner Result = LegalizeOp(Result); 1284f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner break; 1285f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner } 1286f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FSQRT: 1287f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FSIN: 1288f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FCOS: { 1289f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner MVT::ValueType VT = Node->getValueType(0); 1290f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner Type *T = VT == MVT::f32 ? Type::FloatTy : Type::DoubleTy; 1291f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner const char *FnName = 0; 1292f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner switch(Node->getOpcode()) { 1293f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FSQRT: FnName = VT == MVT::f32 ? "sqrtf" : "sqrt"; break; 1294f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FSIN: FnName = VT == MVT::f32 ? "sinf" : "sin"; break; 1295f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner case ISD::FCOS: FnName = VT == MVT::f32 ? "cosf" : "cos"; break; 1296f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner default: assert(0 && "Unreachable!"); 1297f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner } 1298f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner std::vector<std::pair<SDOperand, const Type*> > Args; 1299f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner Args.push_back(std::make_pair(Tmp1, T)); 13000d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // FIXME: should use ExpandLibCall! 1301f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner std::pair<SDOperand,SDOperand> CallResult = 1302adf6a965a321372c640845407195594835921eb4Chris Lattner TLI.LowerCallTo(DAG.getEntryNode(), T, false, CallingConv::C, true, 1303f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner DAG.getExternalSymbol(FnName, VT), Args, DAG); 1304f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner Result = LegalizeOp(CallResult.first); 1305f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner break; 1306f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner } 1307f76e7dc8d8ac1855ef59698e82c757548ef4ca65Chris Lattner default: 13084af6e0d7836126630f579b0a34f054321187f00bChris Lattner assert(0 && "Unreachable!"); 13092c8086f4b9916b2d02842be5e375276023225fbaChris Lattner } 13102c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 13112c8086f4b9916b2d02842be5e375276023225fbaChris Lattner } 13122c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 13132c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 13142c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Conversion operators. The source and destination have different types. 13153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ZERO_EXTEND: 13163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SIGN_EXTEND: 13177cc4777a263f6a52877d29201311fde5f6edb632Chris Lattner case ISD::TRUNCATE: 131803c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::FP_EXTEND: 131903c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::FP_ROUND: 1320ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::FP_TO_SINT: 1321ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::FP_TO_UINT: 1322ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::SINT_TO_FP: 1323ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::UINT_TO_FP: 13243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 13253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 1326f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth //still made need to expand if the op is illegal, but the types are legal 1327f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth if (Node->getOpcode() == ISD::UINT_TO_FP && 1328f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth TLI.getOperationAction(Node->getOpcode(), 1329f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth Node->getOperand(0).getValueType()) 1330f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth == TargetLowering::Expand) { 1331f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth Tmp1 = DAG.getNode(ISD::SINT_TO_FP, Node->getValueType(0), 1332f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth Node->getOperand(0)); 1333f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth 1334f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth SDOperand SignSet = DAG.getSetCC(ISD::SETLT, TLI.getSetCCResultTy(), 1335f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth Node->getOperand(0), 1336f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth DAG.getConstant(0, 1337f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth Node->getOperand(0).getValueType())); 1338f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth SDOperand Zero = getIntPtrConstant(0), Four = getIntPtrConstant(4); 1339f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth SDOperand CstOffset = DAG.getNode(ISD::SELECT, Zero.getValueType(), 1340f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth SignSet, Four, Zero); 1341f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth uint64_t FF = 0x5f800000ULL; 1342f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth if (TLI.isLittleEndian()) FF <<= 32; 1343f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth static Constant *FudgeFactor = ConstantUInt::get(Type::ULongTy, FF); 1344f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth 1345f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth MachineConstantPool *CP = DAG.getMachineFunction().getConstantPool(); 1346f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth SDOperand CPIdx = DAG.getConstantPool(CP->getConstantPoolIndex(FudgeFactor), 1347f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth TLI.getPointerTy()); 1348f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth CPIdx = DAG.getNode(ISD::ADD, TLI.getPointerTy(), CPIdx, CstOffset); 1349f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth SDOperand FudgeInReg; 1350f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth if (Node->getValueType(0) == MVT::f32) 1351f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth FudgeInReg = DAG.getLoad(MVT::f32, DAG.getEntryNode(), CPIdx, 1352f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth DAG.getSrcValue(NULL)); 1353f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth else { 1354f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth assert(Node->getValueType(0) == MVT::f64 && "Unexpected conversion"); 1355f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth FudgeInReg = DAG.getNode(ISD::EXTLOAD, MVT::f64, DAG.getEntryNode(), 1356f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth CPIdx, DAG.getSrcValue(NULL), MVT::f32); 1357f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth } 1358f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth Result = DAG.getNode(ISD::ADD, Node->getValueType(0), Tmp1, FudgeInReg); 1359f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth break; 1360f4b3278aeba23efbeacf6be5c33273e2945be2f2Andrew Lenharth } 13613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 13623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 13633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 13643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1365b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner case Expand: 136677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (Node->getOpcode() == ISD::SINT_TO_FP || 136777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getOpcode() == ISD::UINT_TO_FP) { 136877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, 136977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getValueType(0), Node->getOperand(0)); 137077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner break; 13712c8086f4b9916b2d02842be5e375276023225fbaChris Lattner } else if (Node->getOpcode() == ISD::TRUNCATE) { 13722c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // In the expand case, we must be dealing with a truncate, because 13732c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // otherwise the result would be larger than the source. 13742c8086f4b9916b2d02842be5e375276023225fbaChris Lattner ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 1375edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 13762c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // Since the result is legal, we should just be able to truncate the low 13772c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // part of the source. 13782c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = DAG.getNode(ISD::TRUNCATE, Node->getValueType(0), Tmp1); 13792c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 138077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 13812c8086f4b9916b2d02842be5e375276023225fbaChris Lattner assert(0 && "Shouldn't need to expand other operators here!"); 1382b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner 138303c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Promote: 138403c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (Node->getOpcode()) { 13851713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner case ISD::ZERO_EXTEND: 13861713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 138747e9223e06390897c3834f8c527001df392570ffChris Lattner // NOTE: Any extend would work here... 138847e9223e06390897c3834f8c527001df392570ffChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, Op.getValueType(), Result); 138923993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result = DAG.getZeroExtendInReg(Result, 139023993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Node->getOperand(0).getValueType()); 139103c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 139203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SIGN_EXTEND: 13931713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 139447e9223e06390897c3834f8c527001df392570ffChris Lattner // NOTE: Any extend would work here... 1395d5d56825123665b60d4eada0a4ad7d0adc5cf3a3Chris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, Op.getValueType(), Result); 13961713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 13971713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result, Node->getOperand(0).getValueType()); 13981713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 139903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::TRUNCATE: 14001713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 14011713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::TRUNCATE, Op.getValueType(), Result); 14021713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 140303c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_EXTEND: 14041713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 14051713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner if (Result.getValueType() != Op.getValueType()) 14061713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner // Dynamically dead while we have only 2 FP types. 14071713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::FP_EXTEND, Op.getValueType(), Result); 14081713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 140903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_ROUND: 141003c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_TO_SINT: 141103c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_TO_UINT: 1412f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 1413f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(Node->getOpcode(), Op.getValueType(), Result); 1414f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 141503c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SINT_TO_FP: 1416f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 1417f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 1418f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result, Node->getOperand(0).getValueType()); 1419f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::SINT_TO_FP, Op.getValueType(), Result); 1420f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 142103c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::UINT_TO_FP: 1422f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 142323993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result = DAG.getZeroExtendInReg(Result, 142423993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Node->getOperand(0).getValueType()); 1425f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::UINT_TO_FP, Op.getValueType(), Result); 1426f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 142703c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 14283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 14300f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::FP_ROUND_INREG: 143123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner case ISD::SIGN_EXTEND_INREG: { 14320f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 143345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MVT::ValueType ExtraVT = cast<MVTSDNode>(Node)->getExtraValueType(); 143445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner 143545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // If this operation is not supported, convert it to a shl/shr or load/store 143645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // pair. 143755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), ExtraVT)) { 143855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action not supported for this op yet!"); 143955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 144055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (Tmp1 != Node->getOperand(0)) 144155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, 144255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtraVT); 144355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 144455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Expand: 144545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // If this is an integer extend and shifts are supported, do that. 144623993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner if (Node->getOpcode() == ISD::SIGN_EXTEND_INREG) { 144745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: we could fall back on load/store here too for targets without 144845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // SAR. However, it is doubtful that any exist. 144945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned BitsDiff = MVT::getSizeInBits(Node->getValueType(0)) - 145045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MVT::getSizeInBits(ExtraVT); 145127ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner SDOperand ShiftCst = DAG.getConstant(BitsDiff, TLI.getShiftAmountTy()); 145245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::SHL, Node->getValueType(0), 145345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getOperand(0), ShiftCst); 145445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::SRA, Node->getValueType(0), 145545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result, ShiftCst); 145645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else if (Node->getOpcode() == ISD::FP_ROUND_INREG) { 145745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // The only way we can lower this is to turn it into a STORETRUNC, 145845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // EXTLOAD pair, targetting a temporary location (a stack slot). 145945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner 146045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: there is a choice here between constantly creating new stack 146145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // slots and always reusing the same one. We currently always create 146245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // new ones, as reuse may inhibit scheduling. 146345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner const Type *Ty = MVT::getTypeForValueType(ExtraVT); 146445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned TySize = (unsigned)TLI.getTargetData().getTypeSize(Ty); 146545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned Align = TLI.getTargetData().getTypeAlignment(Ty); 146645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MachineFunction &MF = DAG.getMachineFunction(); 1467edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman int SSFI = 146845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MF.getFrameInfo()->CreateStackObject((unsigned)TySize, Align); 146945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner SDOperand StackSlot = DAG.getFrameIndex(SSFI, TLI.getPointerTy()); 147045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, DAG.getEntryNode(), 147152d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Node->getOperand(0), StackSlot, 147252d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner DAG.getSrcValue(NULL), ExtraVT); 147345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::EXTLOAD, Node->getValueType(0), 14742d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Result, StackSlot, DAG.getSrcValue(NULL), ExtraVT); 147545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else { 147645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner assert(0 && "Unknown op"); 147745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 147845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = LegalizeOp(Result); 147955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 148045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14810f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 14823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 148345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 148545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 148645982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 148745982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 14883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 14893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 14903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14918b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// PromoteOp - Given an operation that produces a value in an invalid type, 14928b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// promote it to compute the value into a larger type. The produced value will 14938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// have the correct bits for the low portion of the register, but no guarantee 14948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// is made about the top bits: it may be zero, sign-extended, or garbage. 149503c8546ec57523970874917854a2fb77b1ff598eChris LattnerSDOperand SelectionDAGLegalize::PromoteOp(SDOperand Op) { 149603c8546ec57523970874917854a2fb77b1ff598eChris Lattner MVT::ValueType VT = Op.getValueType(); 149771c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 149803c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(getTypeAction(VT) == Promote && 149903c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Caller should expand or legalize operands that are not promotable!"); 150003c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(NVT > VT && MVT::isInteger(NVT) == MVT::isInteger(VT) && 150103c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Cannot promote to smaller type!"); 150203c8546ec57523970874917854a2fb77b1ff598eChris Lattner 150303c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand Tmp1, Tmp2, Tmp3; 150403c8546ec57523970874917854a2fb77b1ff598eChris Lattner 150503c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand Result; 150603c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDNode *Node = Op.Val; 150703c8546ec57523970874917854a2fb77b1ff598eChris Lattner 150845982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (!Node->hasOneUse()) { 150945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner std::map<SDOperand, SDOperand>::iterator I = PromotedNodes.find(Op); 151045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner if (I != PromotedNodes.end()) return I->second; 151145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner } else { 151245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner assert(!PromotedNodes.count(Op) && "Repromoted this node??"); 151345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner } 151445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner 15150f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // Promotion needs an optimization step to clean up after it, and is not 15160f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // careful to avoid operations the target does not support. Make sure that 15170f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // all generated operations are legalized in the next iteration. 15180f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner NeedsAnotherIteration = true; 15190f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 152003c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (Node->getOpcode()) { 152103c8546ec57523970874917854a2fb77b1ff598eChris Lattner default: 152203c8546ec57523970874917854a2fb77b1ff598eChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 152303c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(0 && "Do not know how to promote this operator!"); 152403c8546ec57523970874917854a2fb77b1ff598eChris Lattner abort(); 1525fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: 1526fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getNode(ISD::UNDEF, NVT); 1527fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 152803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::Constant: 152903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, NVT, Op); 153003c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isa<ConstantSDNode>(Result) && "Didn't constant fold zext?"); 153103c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 153203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::ConstantFP: 153303c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::FP_EXTEND, NVT, Op); 153403c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isa<ConstantFPSDNode>(Result) && "Didn't constant fold fp_extend?"); 153503c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 1536ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case ISD::CopyFromReg: 1537ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Result = DAG.getCopyFromReg(cast<RegSDNode>(Node)->getReg(), NVT, 1538ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Node->getOperand(0)); 1539ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner // Remember that we legalized the chain. 1540ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1541ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner break; 1542ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner 154382fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner case ISD::SETCC: 154482fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner assert(getTypeAction(TLI.getSetCCResultTy()) == Legal && 154582fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner "SetCC type is not legal??"); 154682fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 154782fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner TLI.getSetCCResultTy(), Node->getOperand(0), 154882fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Node->getOperand(1)); 154982fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Result = LegalizeOp(Result); 155082fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner break; 155103c8546ec57523970874917854a2fb77b1ff598eChris Lattner 155203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::TRUNCATE: 155303c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 155403c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Legal: 155503c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = LegalizeOp(Node->getOperand(0)); 155603c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(Result.getValueType() >= NVT && 155703c8546ec57523970874917854a2fb77b1ff598eChris Lattner "This truncation doesn't make sense!"); 155803c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (Result.getValueType() > NVT) // Truncate to NVT instead of VT 155903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::TRUNCATE, NVT, Result); 156003c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 1561e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner case Promote: 1562e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner // The truncation is not required, because we don't guarantee anything 1563e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner // about high bits anyway. 1564e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner Result = PromoteOp(Node->getOperand(0)); 1565e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner break; 156603c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Expand: 156779e46acd35df36477029e9f534ab1a366a98df56Nate Begeman ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 156879e46acd35df36477029e9f534ab1a366a98df56Nate Begeman // Truncate the low part of the expanded value to the result type 1569edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Result = DAG.getNode(ISD::TRUNCATE, VT, Tmp1); 157003c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 157103c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 15728b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SIGN_EXTEND: 15738b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::ZERO_EXTEND: 15748b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 15758b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: assert(0 && "BUG: Smaller reg should have been promoted!"); 15768b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 15778b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Input is legal? Just do extend all the way to the larger type. 15788b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 15798b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 15808b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 15818b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 15828b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Promote the reg if it's smaller. 15838b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = PromoteOp(Node->getOperand(0)); 15848b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The high bits are not guaranteed to be anything. Insert an extend. 15858b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (Node->getOpcode() == ISD::SIGN_EXTEND) 1586595dc5408ad809b9a9a417db275c43242e54b8dcChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Result, 1587595dc5408ad809b9a9a417db275c43242e54b8dcChris Lattner Node->getOperand(0).getValueType()); 15888b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner else 158923993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result = DAG.getZeroExtendInReg(Result, 159023993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Node->getOperand(0).getValueType()); 15918b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 15928b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 15938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 15948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 15958b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_EXTEND: 15968b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "Case not implemented. Dynamically dead with 2 FP types!"); 15978b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_ROUND: 15988b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 15998b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: assert(0 && "BUG: Cannot expand FP regs!"); 16008b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: assert(0 && "Unreachable with 2 FP types!"); 16018b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 16028b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Input is legal? Do an FP_ROUND_INREG. 16038b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 16048b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 16058b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16068b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 16078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 16098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SINT_TO_FP: 16108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UINT_TO_FP: 16118b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 16128b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 16138b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 161477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // No extra round required here. 161577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 16168b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 16188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 16198b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = PromoteOp(Node->getOperand(0)); 16208b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (Node->getOpcode() == ISD::SINT_TO_FP) 16218b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 16228b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result, Node->getOperand(0).getValueType()); 16238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner else 162423993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Result = DAG.getZeroExtendInReg(Result, 162523993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Node->getOperand(0).getValueType()); 162677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // No extra round required here. 162777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 16288b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16298b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: 163077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, NVT, 163177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getOperand(0)); 163277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // Round if we cannot tolerate excess precision. 163377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (NoExcessFPPrecision) 163477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 163577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner break; 16368b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 16378b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16388b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 16398b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_TO_SINT: 16408b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_TO_UINT: 16418b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 16428b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 16438b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 16448b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16458b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 16468b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input result is prerounded, so we don't have to do anything 16478b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // special. 16488b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 16498b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16508b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: 16518b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "not implemented"); 16528b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 16538b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 16548b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 16558b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 16562c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case ISD::FABS: 16572c8086f4b9916b2d02842be5e375276023225fbaChris Lattner case ISD::FNEG: 16582c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 16592c8086f4b9916b2d02842be5e375276023225fbaChris Lattner assert(Tmp1.getValueType() == NVT); 16602c8086f4b9916b2d02842be5e375276023225fbaChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 16612c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // NOTE: we do not have to do any extra rounding here for 16622c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // NoExcessFPPrecision, because we know the input will have the appropriate 16632c8086f4b9916b2d02842be5e375276023225fbaChris Lattner // precision, and these operations don't modify precision at all. 16642c8086f4b9916b2d02842be5e375276023225fbaChris Lattner break; 16652c8086f4b9916b2d02842be5e375276023225fbaChris Lattner 1666da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FSQRT: 1667da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FSIN: 1668da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner case ISD::FCOS: 1669da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 1670da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner assert(Tmp1.getValueType() == NVT); 1671da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 1672da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner if(NoExcessFPPrecision) 1673da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 1674da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner break; 1675da6ba87d234a934409e8d8d5b131b7341ab4bf97Chris Lattner 167603c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::AND: 167703c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::OR: 167803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::XOR: 16790f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::ADD: 16808b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SUB: 16810f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::MUL: 16820f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // The input may have strange things in the top bits of the registers, but 16830f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // these operations don't care. They may have wierd bits going out, but 16840f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // that too is okay if they are integer operations. 16850f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 16860f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 16870f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner assert(Tmp1.getValueType() == NVT && Tmp2.getValueType() == NVT); 16880f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 16890f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 16900f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // However, if this is a floating point operation, they will give excess 16910f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // precision that we may not be able to tolerate. If we DO allow excess 16920f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // precision, just leave it, otherwise excise it. 16938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // FIXME: Why would we need to round FP ops more than integer ones? 16948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Is Round(Add(Add(A,B),C)) != Round(Add(Round(Add(A,B)), C)) 16950f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (MVT::isFloatingPoint(NVT) && NoExcessFPPrecision) 16960f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 16970f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 16980f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 16998b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SDIV: 17008b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SREM: 17018b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // These operators require that their input be sign extended. 17028b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 17038b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 17048b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isInteger(NVT)) { 17058b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 1706ff3e50cc39db6939b637165997283f59412387bbChris Lattner Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2, VT); 17078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 17088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 17098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 17108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Perform FP_ROUND: this is probably overly pessimistic. 17118b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isFloatingPoint(NVT) && NoExcessFPPrecision) 17128b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 17138b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 17158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UDIV: 17168b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UREM: 17178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // These operators require that their input be zero extended. 17188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 17198b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 17208b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(MVT::isInteger(NVT) && "Operators don't apply to FP!"); 172123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp1 = DAG.getZeroExtendInReg(Tmp1, VT); 172223993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp2 = DAG.getZeroExtendInReg(Tmp2, VT); 17238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 17248b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17258b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 17268b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SHL: 17278b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 17288b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 17298b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SHL, NVT, Tmp1, Tmp2); 17308b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17318b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SRA: 17328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input value must be properly sign extended. 17338b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 17348b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 17358b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 17368b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SRA, NVT, Tmp1, Tmp2); 17378b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 17388b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SRL: 17398b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input value must be properly zero extended. 17408b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 174123993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner Tmp1 = DAG.getZeroExtendInReg(Tmp1, VT); 17428b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 17438b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SRL, NVT, Tmp1, Tmp2); 17448b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 174503c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::LOAD: 174603c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 174703c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 1748232ee95a09a583b7d66b90ee7ddf7fdb9c194a04Chris Lattner // FIXME: When the DAG combiner exists, change this to use EXTLOAD! 17496841dec8c1c071b5a417fb4172633c68301be36cChris Lattner if (MVT::isInteger(NVT)) 175052d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getNode(ISD::ZEXTLOAD, NVT, Tmp1, Tmp2, Node->getOperand(2), 175152d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner VT); 17526841dec8c1c071b5a417fb4172633c68301be36cChris Lattner else 175352d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner Result = DAG.getNode(ISD::EXTLOAD, NVT, Tmp1, Tmp2, Node->getOperand(2), 175452d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner VT); 175503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 175603c8546ec57523970874917854a2fb77b1ff598eChris Lattner // Remember that we legalized the chain. 175703c8546ec57523970874917854a2fb77b1ff598eChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 175803c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 175903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SELECT: 176047e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 176147e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 176247e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 176347e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0));// Legalize the condition. 176447e9223e06390897c3834f8c527001df392570ffChris Lattner break; 176547e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 176647e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // Promote the condition. 176747e9223e06390897c3834f8c527001df392570ffChris Lattner break; 176847e9223e06390897c3834f8c527001df392570ffChris Lattner } 176903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Legalize the op0 177003c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp3 = PromoteOp(Node->getOperand(2)); // Legalize the op1 177103c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::SELECT, NVT, Tmp1, Tmp2, Tmp3); 177203c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 1773d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner case ISD::TAILCALL: 17748ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner case ISD::CALL: { 17758ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 17768ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 17778ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner 17783d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 17793d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) 17803d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 17813d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 17828ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner assert(Node->getNumValues() == 2 && Op.ResNo == 0 && 17838ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner "Can only promote single result calls"); 17848ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner std::vector<MVT::ValueType> RetTyVTs; 17858ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.reserve(2); 17868ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.push_back(NVT); 17878ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.push_back(MVT::Other); 1788d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner SDNode *NC = DAG.getCall(RetTyVTs, Tmp1, Tmp2, Ops, 1789d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner Node->getOpcode() == ISD::TAILCALL); 17908ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Result = SDOperand(NC, 0); 17918ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner 17928ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner // Insert the new chain mapping. 17938ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 17948ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner break; 1795edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman } 1796fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTPOP: 1797fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTTZ: 1798fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTLZ: 1799fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Tmp1 = Node->getOperand(0); 1800fecf095292991bdf9396fec474011446107f9813Andrew Lenharth //Zero extend the argument 1801fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, NVT, Tmp1); 1802fecf095292991bdf9396fec474011446107f9813Andrew Lenharth // Perform the larger operation, then subtract if needed. 1803fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Tmp1 = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 1804fecf095292991bdf9396fec474011446107f9813Andrew Lenharth switch(Node->getOpcode()) 1805fecf095292991bdf9396fec474011446107f9813Andrew Lenharth { 1806fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTPOP: 1807fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Result = Tmp1; 1808fecf095292991bdf9396fec474011446107f9813Andrew Lenharth break; 1809fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTTZ: 1810fecf095292991bdf9396fec474011446107f9813Andrew Lenharth //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 1811fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Tmp2 = DAG.getSetCC(ISD::SETEQ, MVT::i1, Tmp1, 1812fecf095292991bdf9396fec474011446107f9813Andrew Lenharth DAG.getConstant(getSizeInBits(NVT), NVT)); 1813fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Result = DAG.getNode(ISD::SELECT, NVT, Tmp2, 1814fecf095292991bdf9396fec474011446107f9813Andrew Lenharth DAG.getConstant(getSizeInBits(VT),NVT), Tmp1); 1815fecf095292991bdf9396fec474011446107f9813Andrew Lenharth break; 1816fecf095292991bdf9396fec474011446107f9813Andrew Lenharth case ISD::CTLZ: 1817fecf095292991bdf9396fec474011446107f9813Andrew Lenharth //Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 1818fecf095292991bdf9396fec474011446107f9813Andrew Lenharth Result = DAG.getNode(ISD::SUB, NVT, Tmp1, 1819fecf095292991bdf9396fec474011446107f9813Andrew Lenharth DAG.getConstant(getSizeInBits(NVT) - 1820fecf095292991bdf9396fec474011446107f9813Andrew Lenharth getSizeInBits(VT), NVT)); 1821fecf095292991bdf9396fec474011446107f9813Andrew Lenharth break; 1822fecf095292991bdf9396fec474011446107f9813Andrew Lenharth } 1823fecf095292991bdf9396fec474011446107f9813Andrew Lenharth break; 182403c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 182503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 182603c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(Result.Val && "Didn't set a result!"); 182703c8546ec57523970874917854a2fb77b1ff598eChris Lattner AddPromotedOperand(Op, Result); 182803c8546ec57523970874917854a2fb77b1ff598eChris Lattner return Result; 182903c8546ec57523970874917854a2fb77b1ff598eChris Lattner} 18303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 183184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner/// ExpandAddSub - Find a clever way to expand this add operation into 183284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner/// subcomponents. 18334759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattnervoid SelectionDAGLegalize:: 18344759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris LattnerExpandByParts(unsigned NodeOp, SDOperand LHS, SDOperand RHS, 18354759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner SDOperand &Lo, SDOperand &Hi) { 183684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner // Expand the subcomponents. 183784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner SDOperand LHSL, LHSH, RHSL, RHSH; 183884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandOp(LHS, LHSL, LHSH); 183984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandOp(RHS, RHSL, RHSH); 184084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner 1841bd0781ed12dd817f760065e3ac2dcff12fb29440Chris Lattner // FIXME: this should be moved to the dag combiner someday. 1842e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner assert(NodeOp == ISD::ADD_PARTS || NodeOp == ISD::SUB_PARTS); 1843e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (LHSL.getValueType() == MVT::i32) { 1844e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner SDOperand LowEl; 1845e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(LHSL)) 1846e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (C->getValue() == 0) 1847e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner LowEl = RHSL; 1848e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(RHSL)) 1849e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (C->getValue() == 0) 1850e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner LowEl = LHSL; 1851e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner if (LowEl.Val) { 1852e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner // Turn this into an add/sub of the high part only. 1853e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner SDOperand HiEl = 1854e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner DAG.getNode(NodeOp == ISD::ADD_PARTS ? ISD::ADD : ISD::SUB, 1855e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner LowEl.getValueType(), LHSH, RHSH); 1856e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Lo = LowEl; 1857e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Hi = HiEl; 1858e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner return; 1859bd0781ed12dd817f760065e3ac2dcff12fb29440Chris Lattner } 1860e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner } 1861bd0781ed12dd817f760065e3ac2dcff12fb29440Chris Lattner 186284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner std::vector<SDOperand> Ops; 186384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LHSL); 186484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LHSH); 186584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(RHSL); 186684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(RHSH); 1867e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner 1868e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner std::vector<MVT::ValueType> VTs(2, LHSL.getValueType()); 1869e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Lo = DAG.getNode(NodeOp, VTs, Ops); 187084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Hi = Lo.getValue(1); 187184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner} 187284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner 18735b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattnervoid SelectionDAGLegalize::ExpandShiftParts(unsigned NodeOp, 18745b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner SDOperand Op, SDOperand Amt, 18755b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner SDOperand &Lo, SDOperand &Hi) { 18765b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner // Expand the subcomponents. 18775b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner SDOperand LHSL, LHSH; 18785b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner ExpandOp(Op, LHSL, LHSH); 18795b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner 18805b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner std::vector<SDOperand> Ops; 18815b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Ops.push_back(LHSL); 18825b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Ops.push_back(LHSH); 18835b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Ops.push_back(Amt); 1884e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner std::vector<MVT::ValueType> VTs; 1885e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner VTs.push_back(LHSL.getValueType()); 1886e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner VTs.push_back(LHSH.getValueType()); 1887e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner VTs.push_back(Amt.getValueType()); 1888e89083a9300dc463e3b79eabe2b9913d85338d28Chris Lattner Lo = DAG.getNode(NodeOp, VTs, Ops); 18895b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Hi = Lo.getValue(1); 18905b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner} 18915b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner 18925b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner 1893e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// ExpandShift - Try to find a clever way to expand this shift operation out to 1894e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// smaller elements. If we can't find a way that is more efficient than a 1895e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// libcall on this target, return false. Otherwise, return true with the 1896e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// low-parts expanded into Lo and Hi. 1897e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattnerbool SelectionDAGLegalize::ExpandShift(unsigned Opc, SDOperand Op,SDOperand Amt, 1898e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand &Lo, SDOperand &Hi) { 1899e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner assert((Opc == ISD::SHL || Opc == ISD::SRA || Opc == ISD::SRL) && 1900e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner "This is not a shift!"); 1901f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman 1902e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(Op.getValueType()); 1903f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman SDOperand ShAmt = LegalizeOp(Amt); 1904f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman MVT::ValueType ShTy = ShAmt.getValueType(); 1905f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman unsigned VTBits = MVT::getSizeInBits(Op.getValueType()); 1906f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman unsigned NVTBits = MVT::getSizeInBits(NVT); 1907f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman 1908f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // Handle the case when Amt is an immediate. Other cases are currently broken 1909f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // and are disabled. 1910f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Amt.Val)) { 1911f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman unsigned Cst = CN->getValue(); 1912f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // Expand the incoming operand to be shifted, so that we have its parts 1913f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman SDOperand InL, InH; 1914f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman ExpandOp(Op, InL, InH); 1915f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman switch(Opc) { 1916f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman case ISD::SHL: 1917f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman if (Cst > VTBits) { 1918f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getConstant(0, NVT); 1919f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getConstant(0, NVT); 1920f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else if (Cst > NVTBits) { 1921f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getConstant(0, NVT); 1922f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Cst-NVTBits,ShTy)); 1923ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner } else if (Cst == NVTBits) { 1924ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Lo = DAG.getConstant(0, NVT); 1925ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Hi = InL; 1926f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else { 1927f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getNode(ISD::SHL, NVT, InL, DAG.getConstant(Cst, ShTy)); 1928f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getNode(ISD::OR, NVT, 1929f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SHL, NVT, InH, DAG.getConstant(Cst, ShTy)), 1930f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SRL, NVT, InL, DAG.getConstant(NVTBits-Cst, ShTy))); 1931f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 1932f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman return true; 1933f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman case ISD::SRL: 1934f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman if (Cst > VTBits) { 1935f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getConstant(0, NVT); 1936f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getConstant(0, NVT); 1937f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else if (Cst > NVTBits) { 1938f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Cst-NVTBits,ShTy)); 1939f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getConstant(0, NVT); 1940ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner } else if (Cst == NVTBits) { 1941ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Lo = InH; 1942ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Hi = DAG.getConstant(0, NVT); 1943f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else { 1944f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getNode(ISD::OR, NVT, 1945f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SRL, NVT, InL, DAG.getConstant(Cst, ShTy)), 1946f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SHL, NVT, InH, DAG.getConstant(NVTBits-Cst, ShTy))); 1947f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getNode(ISD::SRL, NVT, InH, DAG.getConstant(Cst, ShTy)); 1948f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 1949f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman return true; 1950f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman case ISD::SRA: 1951f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman if (Cst > VTBits) { 1952edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Hi = Lo = DAG.getNode(ISD::SRA, NVT, InH, 1953f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getConstant(NVTBits-1, ShTy)); 1954f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else if (Cst > NVTBits) { 1955edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Lo = DAG.getNode(ISD::SRA, NVT, InH, 1956f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getConstant(Cst-NVTBits, ShTy)); 1957edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Hi = DAG.getNode(ISD::SRA, NVT, InH, 1958f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getConstant(NVTBits-1, ShTy)); 1959ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner } else if (Cst == NVTBits) { 1960ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner Lo = InH; 1961edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman Hi = DAG.getNode(ISD::SRA, NVT, InH, 1962ee27f57a6a4dd7fa9259b3604f563907da1f65efChris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1963f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } else { 1964f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Lo = DAG.getNode(ISD::OR, NVT, 1965f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SRL, NVT, InL, DAG.getConstant(Cst, ShTy)), 1966f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman DAG.getNode(ISD::SHL, NVT, InH, DAG.getConstant(NVTBits-Cst, ShTy))); 1967f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman Hi = DAG.getNode(ISD::SRA, NVT, InH, DAG.getConstant(Cst, ShTy)); 1968f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 1969f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman return true; 1970f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 1971f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman } 1972f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // FIXME: The following code for expanding shifts using ISD::SELECT is buggy, 1973f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // so disable it for now. Currently targets are handling this via SHL_PARTS 1974f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman // and friends. 1975f1fe32e337cf825a27a57bb3e9fb847bc91a26ceNate Begeman return false; 1976e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1977e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we have an efficient select operation (or if the selects will all fold 1978e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // away), lower to some complex code, otherwise just emit the libcall. 1979e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (TLI.getOperationAction(ISD::SELECT, NVT) != TargetLowering::Legal && 1980e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner !isa<ConstantSDNode>(Amt)) 1981e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner return false; 1982e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1983e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand InL, InH; 1984e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner ExpandOp(Op, InL, InH); 1985e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand NAmt = DAG.getNode(ISD::SUB, ShTy, // NAmt = 32-ShAmt 1986e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits, ShTy), ShAmt); 1987e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1988e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner // Compare the unmasked shift amount against 32. 1989e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand Cond = DAG.getSetCC(ISD::SETGE, TLI.getSetCCResultTy(), ShAmt, 1990e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner DAG.getConstant(NVTBits, ShTy)); 1991e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner 1992e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (TLI.getShiftAmountFlavor() != TargetLowering::Mask) { 1993e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner ShAmt = DAG.getNode(ISD::AND, ShTy, ShAmt, // ShAmt &= 31 1994e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1995e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner NAmt = DAG.getNode(ISD::AND, ShTy, NAmt, // NAmt &= 31 1996e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1997e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } 1998e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1999e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (Opc == ISD::SHL) { 2000e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand T1 = DAG.getNode(ISD::OR, NVT,// T1 = (Hi << Amt) | (Lo >> NAmt) 2001e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SHL, NVT, InH, ShAmt), 2002e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SRL, NVT, InL, NAmt)); 2003e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand T2 = DAG.getNode(ISD::SHL, NVT, InL, ShAmt); // T2 = Lo << Amt&31 2004edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2005e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, Cond, T2, T1); 2006e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, Cond, DAG.getConstant(0, NVT), T2); 2007e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } else { 200877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand HiLoPart = DAG.getNode(ISD::SELECT, NVT, 200977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getSetCC(ISD::SETEQ, 201077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TLI.getSetCCResultTy(), NAmt, 201177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(32, ShTy)), 201277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(0, NVT), 201377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getNode(ISD::SHL, NVT, InH, NAmt)); 2014e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand T1 = DAG.getNode(ISD::OR, NVT,// T1 = (Hi << NAmt) | (Lo >> Amt) 201577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner HiLoPart, 2016e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SRL, NVT, InL, ShAmt)); 2017e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand T2 = DAG.getNode(Opc, NVT, InH, ShAmt); // T2 = InH >> ShAmt&31 2018e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2019e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand HiPart; 202077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (Opc == ISD::SRA) 202177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner HiPart = DAG.getNode(ISD::SRA, NVT, InH, 202277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 2023e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner else 2024e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner HiPart = DAG.getConstant(0, NVT); 2025e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, Cond, T2, T1); 2026e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, Cond, HiPart, T2); 2027e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } 2028e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner return true; 2029e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner} 203077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 20319530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// FindLatestCallSeqStart - Scan up the dag to find the latest (highest 20329530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// NodeDepth) node that is an CallSeqStart operation and occurs later than 20339c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// Found. 20349530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattnerstatic void FindLatestCallSeqStart(SDNode *Node, SDNode *&Found) { 20359c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->getNodeDepth() <= Found->getNodeDepth()) return; 20369c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 203716cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // If we found an CALLSEQ_START, we already know this node occurs later 20389c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // than the Found node. Just remember this node and return. 203916cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) { 20409c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found = Node; 20419c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return; 20429c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 20439c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 20449c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Otherwise, scan the operands of Node to see if any of them is a call. 20459c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(Node->getNumOperands() != 0 && 20469c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner "All leaves should have depth equal to the entry node!"); 20479c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (unsigned i = 0, e = Node->getNumOperands()-1; i != e; ++i) 20489530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindLatestCallSeqStart(Node->getOperand(i).Val, Found); 20499c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 20509c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Tail recurse for the last iteration. 20519530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindLatestCallSeqStart(Node->getOperand(Node->getNumOperands()-1).Val, 20529c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found); 20539c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 20549c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 20559c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 20569530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// FindEarliestCallSeqEnd - Scan down the dag to find the earliest (lowest 20579530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// NodeDepth) node that is an CallSeqEnd operation and occurs more recent 20589c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// than Found. 20599530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattnerstatic void FindEarliestCallSeqEnd(SDNode *Node, SDNode *&Found) { 20609c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Found && Node->getNodeDepth() >= Found->getNodeDepth()) return; 20619c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 206216cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // If we found an CALLSEQ_END, we already know this node occurs earlier 20639c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // than the Found node. Just remember this node and return. 206416cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) { 20659c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found = Node; 20669c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return; 20679c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 20689c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 20699c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Otherwise, scan the operands of Node to see if any of them is a call. 20709c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode::use_iterator UI = Node->use_begin(), E = Node->use_end(); 20719c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (UI == E) return; 20729c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (--E; UI != E; ++UI) 20739530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindEarliestCallSeqEnd(*UI, Found); 20749c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 20759c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Tail recurse for the last iteration. 20769530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindEarliestCallSeqEnd(*UI, Found); 20779c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 20789c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 20799530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// FindCallSeqEnd - Given a chained node that is part of a call sequence, 208016cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner/// find the CALLSEQ_END node that terminates the call sequence. 20819530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattnerstatic SDNode *FindCallSeqEnd(SDNode *Node) { 208216cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 20839c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return Node; 2084f4b457987fca50a1dc86e1a60dad2cff2b060945Chris Lattner if (Node->use_empty()) 20859530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner return 0; // No CallSeqEnd 20869c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 20879c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->hasOneUse()) // Simple case, only has one user to check. 20889530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner return FindCallSeqEnd(*Node->use_begin()); 2089edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 20909c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand TheChain(Node, Node->getNumValues()-1); 20912789bde57f4245f4418a2d8d54e7f372b71f0a7dChris Lattner if (TheChain.getValueType() != MVT::Other) 20922789bde57f4245f4418a2d8d54e7f372b71f0a7dChris Lattner TheChain = SDOperand(Node, 0); 20939c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(TheChain.getValueType() == MVT::Other && "Is not a token chain!"); 2094edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2095edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman for (SDNode::use_iterator UI = Node->use_begin(), 20969c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner E = Node->use_end(); ; ++UI) { 209716cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner assert(UI != E && "Didn't find a user of the tokchain, no CALLSEQ_END!"); 2098edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 20999c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Make sure to only follow users of our token chain. 21009c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *User = *UI; 21019c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 21029c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (User->getOperand(i) == TheChain) 2103eb516e7f0aa3223eab7967f4c0f8132d82efd841Chris Lattner if (SDNode *Result = FindCallSeqEnd(User)) 2104eb516e7f0aa3223eab7967f4c0f8132d82efd841Chris Lattner return Result; 21059c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 21069c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(0 && "Unreachable"); 21079c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner abort(); 21089c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 21099c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21109530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner/// FindCallSeqStart - Given a chained node that is part of a call sequence, 211116cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner/// find the CALLSEQ_START node that initiates the call sequence. 21129530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattnerstatic SDNode *FindCallSeqStart(SDNode *Node) { 21139530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner assert(Node && "Didn't find callseq_start for a call??"); 211416cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 21150d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 21160d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner assert(Node->getOperand(0).getValueType() == MVT::Other && 21170d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner "Node doesn't have a token chain argument!"); 21189530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner return FindCallSeqStart(Node->getOperand(0).Val); 21190d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner} 21200d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 21210d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 21229c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// FindInputOutputChains - If we are replacing an operation with a call we need 21239c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// to find the call that occurs before and the call that occurs after it to 21240d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// properly serialize the calls in the block. The returned operand is the 21250d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// input chain value for the new call (e.g. the entry node or the previous 21260d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// call), and OutChain is set to be the chain node to update to point to the 21270d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// end of the call chain. 21289c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnerstatic SDOperand FindInputOutputChains(SDNode *OpNode, SDNode *&OutChain, 21299c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand Entry) { 21309530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner SDNode *LatestCallSeqStart = Entry.Val; 21319530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner SDNode *LatestCallSeqEnd = 0; 21329530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindLatestCallSeqStart(OpNode, LatestCallSeqStart); 21339530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner //std::cerr<<"Found node: "; LatestCallSeqStart->dump(); std::cerr <<"\n"; 2134edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 213516cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // It is possible that no ISD::CALLSEQ_START was found because there is no 2136c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman // previous call in the function. LatestCallStackDown may in that case be 213716cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // the entry node itself. Do not attempt to find a matching CALLSEQ_END 213816cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner // unless LatestCallStackDown is an CALLSEQ_START. 21399530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner if (LatestCallSeqStart->getOpcode() == ISD::CALLSEQ_START) 21409530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner LatestCallSeqEnd = FindCallSeqEnd(LatestCallSeqStart); 2141c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman else 21429530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner LatestCallSeqEnd = Entry.Val; 21439530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner assert(LatestCallSeqEnd && "NULL return from FindCallSeqEnd"); 2144edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 21450d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Finally, find the first call that this must come before, first we find the 21469530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner // CallSeqEnd that ends the call. 21470d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner OutChain = 0; 21489530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner FindEarliestCallSeqEnd(OpNode, OutChain); 21499c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21509530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner // If we found one, translate from the adj up to the callseq_start. 21510d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner if (OutChain) 21529530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner OutChain = FindCallSeqStart(OutChain); 21539c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21549530ddcc605cb65d0a19bbfbfb8b73b09c4e4cfaChris Lattner return SDOperand(LatestCallSeqEnd, 0); 21559c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 21569c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21570d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner/// SpliceCallInto - Given the result chain of a libcall (CallResult), and a 2158b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattnervoid SelectionDAGLegalize::SpliceCallInto(const SDOperand &CallResult, 2159b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner SDNode *OutChain) { 21600d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Nothing to splice it into? 21610d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner if (OutChain == 0) return; 21620d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 21630d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner assert(OutChain->getOperand(0).getValueType() == MVT::Other); 21640d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner //OutChain->dump(); 21650d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 21660d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Form a token factor node merging the old inval and the new inval. 21670d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner SDOperand InToken = DAG.getNode(ISD::TokenFactor, MVT::Other, CallResult, 21680d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner OutChain->getOperand(0)); 21690d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Change the node to refer to the new token. 21700d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner OutChain->setAdjCallChain(InToken); 21710d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner} 21729c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 21739c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 217477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 217577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 217677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 217777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 217877e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerSDOperand SelectionDAGLegalize::ExpandLibCall(const char *Name, SDNode *Node, 217977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand &Hi) { 21809c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *OutChain; 21819c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand InChain = FindInputOutputChains(Node, OutChain, 21829c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner DAG.getEntryNode()); 2183f4b457987fca50a1dc86e1a60dad2cff2b060945Chris Lattner if (InChain.Val == 0) 2184f4b457987fca50a1dc86e1a60dad2cff2b060945Chris Lattner InChain = DAG.getEntryNode(); 21859c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 218677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 218777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 218877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner MVT::ValueType ArgVT = Node->getOperand(i).getValueType(); 218977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *ArgTy = MVT::getTypeForValueType(ArgVT); 219077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args.push_back(std::make_pair(Node->getOperand(i), ArgTy)); 219177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 219277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Callee = DAG.getExternalSymbol(Name, TLI.getPointerTy()); 2193edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 21940d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 219577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *RetTy = MVT::getTypeForValueType(Node->getValueType(0)); 21960d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner std::pair<SDOperand,SDOperand> CallInfo = 2197adf6a965a321372c640845407195594835921eb4Chris Lattner TLI.LowerCallTo(InChain, RetTy, false, CallingConv::C, false, 2198adf6a965a321372c640845407195594835921eb4Chris Lattner Callee, Args, DAG); 2199b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner SpliceCallInto(CallInfo.second, OutChain); 2200b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner 2201b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner NeedsAnotherIteration = true; 22020d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 22030d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner switch (getTypeAction(CallInfo.first.getValueType())) { 220477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner default: assert(0 && "Unknown thing"); 220577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Legal: 22060d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner return CallInfo.first; 220777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Promote: 220877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(0 && "Cannot promote this yet!"); 220977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Expand: 221077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Lo; 22110d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner ExpandOp(CallInfo.first, Lo, Hi); 221277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner return Lo; 221377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 221477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 221577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 22169c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 221777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner/// ExpandIntToFP - Expand a [US]INT_TO_FP operation, assuming that the 221877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner/// destination type is legal. 221977e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerSDOperand SelectionDAGLegalize:: 222077e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerExpandIntToFP(bool isSigned, MVT::ValueType DestTy, SDOperand Source) { 222177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(getTypeAction(DestTy) == Legal && "Destination type is not legal!"); 222277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(getTypeAction(Source.getValueType()) == Expand && 222377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner "This is not an expansion!"); 222477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(Source.getValueType() == MVT::i64 && "Only handle expand from i64!"); 222577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 22260d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner if (!isSigned) { 2227e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner assert(Source.getValueType() == MVT::i64 && 2228e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner "This only works for 64-bit -> FP"); 2229e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner // The 64-bit value loaded will be incorrectly if the 'sign bit' of the 2230e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner // incoming integer is set. To handle this, we dynamically test to see if 2231e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner // it is set, and, if so, add a fudge factor. 2232e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand Lo, Hi; 2233e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner ExpandOp(Source, Lo, Hi); 2234e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 223566de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner // If this is unsigned, and not supported, first perform the conversion to 223666de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner // signed, then adjust the result if the sign bit is set. 223766de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner SDOperand SignedConv = ExpandIntToFP(true, DestTy, 223866de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner DAG.getNode(ISD::BUILD_PAIR, Source.getValueType(), Lo, Hi)); 223966de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 2240e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand SignSet = DAG.getSetCC(ISD::SETLT, TLI.getSetCCResultTy(), Hi, 2241e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner DAG.getConstant(0, Hi.getValueType())); 2242e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand Zero = getIntPtrConstant(0), Four = getIntPtrConstant(4); 2243e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand CstOffset = DAG.getNode(ISD::SELECT, Zero.getValueType(), 2244e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SignSet, Four, Zero); 2245383203b0036b8fdeef8119975fdbbd528b760adbChris Lattner uint64_t FF = 0x5f800000ULL; 2246383203b0036b8fdeef8119975fdbbd528b760adbChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 2247383203b0036b8fdeef8119975fdbbd528b760adbChris Lattner static Constant *FudgeFactor = ConstantUInt::get(Type::ULongTy, FF); 2248e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 2249e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner MachineConstantPool *CP = DAG.getMachineFunction().getConstantPool(); 2250e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand CPIdx = DAG.getConstantPool(CP->getConstantPoolIndex(FudgeFactor), 2251e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner TLI.getPointerTy()); 2252e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner CPIdx = DAG.getNode(ISD::ADD, TLI.getPointerTy(), CPIdx, CstOffset); 2253e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner SDOperand FudgeInReg; 2254e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner if (DestTy == MVT::f32) 225552d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner FudgeInReg = DAG.getLoad(MVT::f32, DAG.getEntryNode(), CPIdx, 225652d08bd9d8a8dcc06148525c7fad6f2ebcad0a42Chris Lattner DAG.getSrcValue(NULL)); 2257e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner else { 2258e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner assert(DestTy == MVT::f64 && "Unexpected conversion"); 2259e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner FudgeInReg = DAG.getNode(ISD::EXTLOAD, MVT::f64, DAG.getEntryNode(), 22602d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth CPIdx, DAG.getSrcValue(NULL), MVT::f32); 2261e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 2262e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner return DAG.getNode(ISD::ADD, DestTy, SignedConv, FudgeInReg); 226377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 22640d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 2265a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner // Check to see if the target has a custom way to lower this. If so, use it. 2266a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner switch (TLI.getOperationAction(ISD::SINT_TO_FP, Source.getValueType())) { 2267a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner default: assert(0 && "This action not implemented for this operation!"); 2268a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner case TargetLowering::Legal: 2269a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner case TargetLowering::Expand: 2270a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner break; // This case is handled below. 2271a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner case TargetLowering::Custom: 2272a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner Source = DAG.getNode(ISD::SINT_TO_FP, DestTy, Source); 227350381b6c4180e9a2b983d4623da2e485cd768632Chris Lattner return LegalizeOp(TLI.LowerOperation(Source, DAG)); 2274a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2275a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 227613689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner // Expand the source, then glue it back together for the call. We must expand 227713689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner // the source in case it is shared (this pass of legalize must traverse it). 227813689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner SDOperand SrcLo, SrcHi; 227913689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner ExpandOp(Source, SrcLo, SrcHi); 228013689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner Source = DAG.getNode(ISD::BUILD_PAIR, Source.getValueType(), SrcLo, SrcHi); 228113689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 22820d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner SDNode *OutChain = 0; 22830d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner SDOperand InChain = FindInputOutputChains(Source.Val, OutChain, 22840d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner DAG.getEntryNode()); 22850d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner const char *FnName = 0; 22860d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner if (DestTy == MVT::f32) 22870d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner FnName = "__floatdisf"; 22880d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner else { 22890d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner assert(DestTy == MVT::f64 && "Unknown fp value type!"); 22900d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner FnName = "__floatdidf"; 22910d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 22920d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 229377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Callee = DAG.getExternalSymbol(FnName, TLI.getPointerTy()); 229477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 229577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 229677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *ArgTy = MVT::getTypeForValueType(Source.getValueType()); 229744d105b7faf5672a2af61a3f0fdfed0d437d5777Chris Lattner 229877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args.push_back(std::make_pair(Source, ArgTy)); 229977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 230077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // We don't care about token chains for libcalls. We just use the entry 230177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // node as our input and ignore the output chain. This allows us to place 230277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // calls wherever we need them to satisfy data dependences. 230377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *RetTy = MVT::getTypeForValueType(DestTy); 23040d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 23050d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner std::pair<SDOperand,SDOperand> CallResult = 2306adf6a965a321372c640845407195594835921eb4Chris Lattner TLI.LowerCallTo(InChain, RetTy, false, CallingConv::C, true, 2307adf6a965a321372c640845407195594835921eb4Chris Lattner Callee, Args, DAG); 23080d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 2309b9fa3bc8f39bf1e8df48b85eae4563032dd20bfcChris Lattner SpliceCallInto(CallResult.second, OutChain); 23100d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner return CallResult.first; 231177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2312edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2313e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2314e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 23153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// ExpandOp - Expand the specified SDOperand into its two component pieces 23163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// Lo&Hi. Note that the Op MUST be an expanded type. As a result of this, the 23173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// LegalizeNodes map is filled in for any results that are not expanded, the 23183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// ExpandedNodes map is filled in for any results that are expanded, and the 23193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// Lo/Hi values are returned. 23203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ 23213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MVT::ValueType VT = Op.getValueType(); 232271c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 23233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDNode *Node = Op.Val; 23243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(getTypeAction(VT) == Expand && "Not an expanded type!"); 23253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::isInteger(VT) && "Cannot expand FP values!"); 23263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::isInteger(NVT) && NVT < VT && 23273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Cannot expand to FP value or to larger int value!"); 23283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 23293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If there is more than one use of this, see if we already expanded it. 23303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // There is no use remembering values that only have a single use, as the map 23313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // entries will never be reused. 23323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!Node->hasOneUse()) { 23333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::map<SDOperand, std::pair<SDOperand, SDOperand> >::iterator I 23343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner = ExpandedNodes.find(Op); 23353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (I != ExpandedNodes.end()) { 23363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = I->second.first; 23373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = I->second.second; 23383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return; 23393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 234045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner } else { 234145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner assert(!ExpandedNodes.count(Op) && "Re-expanding a node!"); 23423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 23433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 23444e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // Expanding to multiple registers needs to perform an optimization step, and 23454e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // is not careful to avoid operations the target does not support. Make sure 23464e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // that all generated operations are legalized in the next iteration. 23474e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner NeedsAnotherIteration = true; 23483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 23493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 23503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 23513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 23523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(0 && "Do not know how to expand this operator!"); 23533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner abort(); 2354fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: 2355fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Lo = DAG.getNode(ISD::UNDEF, NVT); 2356fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Hi = DAG.getNode(ISD::UNDEF, NVT); 2357fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 23583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::Constant: { 23593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner uint64_t Cst = cast<ConstantSDNode>(Node)->getValue(); 23603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getConstant(Cst, NVT); 23613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getConstant(Cst >> MVT::getSizeInBits(NVT), NVT); 23623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 23633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 23643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 23653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CopyFromReg: { 236618c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner unsigned Reg = cast<RegSDNode>(Node)->getReg(); 23673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Aggregate register values are always in consequtive pairs. 236869a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Lo = DAG.getCopyFromReg(Reg, NVT, Node->getOperand(0)); 236969a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Hi = DAG.getCopyFromReg(Reg+1, NVT, Lo.getValue(1)); 2370edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 237169a52155d2eff066b49dbac385113002fd9dba14Chris Lattner // Remember that we legalized the chain. 237269a52155d2eff066b49dbac385113002fd9dba14Chris Lattner AddLegalizedOperand(Op.getValue(1), Hi.getValue(1)); 237369a52155d2eff066b49dbac385113002fd9dba14Chris Lattner 23743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(NVT) && "Cannot expand this multiple times yet!"); 23753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 23763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 23773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2378d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner case ISD::BUILD_PAIR: 2379d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner // Legalize both operands. FIXME: in the future we should handle the case 2380d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner // where the two elements are not legal. 2381d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner assert(isTypeLegal(NVT) && "Cannot expand this multiple times yet!"); 2382d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner Lo = LegalizeOp(Node->getOperand(0)); 2383d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner Hi = LegalizeOp(Node->getOperand(1)); 2384d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner break; 2385d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner 2386edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner case ISD::CTPOP: 2387edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner ExpandOp(Node->getOperand(0), Lo, Hi); 23889b583b49103f21888ac3de3f7941a98a63a23aeaChris Lattner Lo = DAG.getNode(ISD::ADD, NVT, // ctpop(HL) -> ctpop(H)+ctpop(L) 23899b583b49103f21888ac3de3f7941a98a63a23aeaChris Lattner DAG.getNode(ISD::CTPOP, NVT, Lo), 23909b583b49103f21888ac3de3f7941a98a63a23aeaChris Lattner DAG.getNode(ISD::CTPOP, NVT, Hi)); 2391edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner Hi = DAG.getConstant(0, NVT); 2392edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner break; 2393edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner 239439a8f336305a492fc6d2625f39f08968185616d2Chris Lattner case ISD::CTLZ: { 239539a8f336305a492fc6d2625f39f08968185616d2Chris Lattner // ctlz (HL) -> ctlz(H) != 32 ? ctlz(H) : (ctlz(L)+32) 23963becf2026bec881a60cbbe0031d8c51f4d6d4e28Chris Lattner ExpandOp(Node->getOperand(0), Lo, Hi); 239739a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand BitsC = DAG.getConstant(MVT::getSizeInBits(NVT), NVT); 239839a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand HLZ = DAG.getNode(ISD::CTLZ, NVT, Hi); 239939a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand TopNotZero = DAG.getSetCC(ISD::SETNE, TLI.getSetCCResultTy(), 240039a8f336305a492fc6d2625f39f08968185616d2Chris Lattner HLZ, BitsC); 240139a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand LowPart = DAG.getNode(ISD::CTLZ, NVT, Lo); 240239a8f336305a492fc6d2625f39f08968185616d2Chris Lattner LowPart = DAG.getNode(ISD::ADD, NVT, LowPart, BitsC); 240339a8f336305a492fc6d2625f39f08968185616d2Chris Lattner 240439a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, TopNotZero, HLZ, LowPart); 240539a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Hi = DAG.getConstant(0, NVT); 240639a8f336305a492fc6d2625f39f08968185616d2Chris Lattner break; 240739a8f336305a492fc6d2625f39f08968185616d2Chris Lattner } 240839a8f336305a492fc6d2625f39f08968185616d2Chris Lattner 240939a8f336305a492fc6d2625f39f08968185616d2Chris Lattner case ISD::CTTZ: { 241039a8f336305a492fc6d2625f39f08968185616d2Chris Lattner // cttz (HL) -> cttz(L) != 32 ? cttz(L) : (cttz(H)+32) 24113becf2026bec881a60cbbe0031d8c51f4d6d4e28Chris Lattner ExpandOp(Node->getOperand(0), Lo, Hi); 241239a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand BitsC = DAG.getConstant(MVT::getSizeInBits(NVT), NVT); 241339a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand LTZ = DAG.getNode(ISD::CTTZ, NVT, Lo); 241439a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand BotNotZero = DAG.getSetCC(ISD::SETNE, TLI.getSetCCResultTy(), 241539a8f336305a492fc6d2625f39f08968185616d2Chris Lattner LTZ, BitsC); 241639a8f336305a492fc6d2625f39f08968185616d2Chris Lattner SDOperand HiPart = DAG.getNode(ISD::CTTZ, NVT, Hi); 241739a8f336305a492fc6d2625f39f08968185616d2Chris Lattner HiPart = DAG.getNode(ISD::ADD, NVT, HiPart, BitsC); 241839a8f336305a492fc6d2625f39f08968185616d2Chris Lattner 241939a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, BotNotZero, LTZ, HiPart); 242039a8f336305a492fc6d2625f39f08968185616d2Chris Lattner Hi = DAG.getConstant(0, NVT); 242139a8f336305a492fc6d2625f39f08968185616d2Chris Lattner break; 242239a8f336305a492fc6d2625f39f08968185616d2Chris Lattner } 2423edb1add9a093efa266c94b6d0a34c26f5b2d5d7bChris Lattner 24243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::LOAD: { 24253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Ch = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 24263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Ptr = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 24272d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Lo = DAG.getLoad(NVT, Ch, Ptr, Node->getOperand(2)); 24283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 24293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Increment the pointer to the other half. 243038d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner unsigned IncrementSize = MVT::getSizeInBits(Lo.getValueType())/8; 24313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 24323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner getIntPtrConstant(IncrementSize)); 24332d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth //Is this safe? declaring that the two parts of the split load 24342d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth //are from the same instruction? 24352d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth Hi = DAG.getLoad(NVT, Ch, Ptr, Node->getOperand(2)); 2436ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner 2437ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // Build a factor node to remember that this load is independent of the 2438ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // other one. 2439ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner SDOperand TF = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 2440ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi.getValue(1)); 2441edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 24423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remember that we legalized the chain. 2443ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner AddLegalizedOperand(Op.getValue(1), TF); 24443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!TLI.isLittleEndian()) 24453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::swap(Lo, Hi); 24463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 24473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2448d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner case ISD::TAILCALL: 24493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CALL: { 24503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Chain = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 24513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Callee = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 24523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 24533d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner bool Changed = false; 24543d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 24553d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) { 24563d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 24573d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 24583d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 24593d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 24603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(Node->getNumValues() == 2 && Op.ResNo == 0 && 24613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Can only expand a call once so far, not i64 -> i16!"); 24623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 24633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<MVT::ValueType> RetTyVTs; 24643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.reserve(3); 24653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(NVT); 24663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(NVT); 24673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(MVT::Other); 2468d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner SDNode *NC = DAG.getCall(RetTyVTs, Chain, Callee, Ops, 2469d71c04199c447de39a2cab240c2fb7f717973e20Chris Lattner Node->getOpcode() == ISD::TAILCALL); 24703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = SDOperand(NC, 0); 24713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = SDOperand(NC, 1); 24723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 24733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Insert the new chain mapping. 2474e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner AddLegalizedOperand(Op.getValue(1), Hi.getValue(2)); 24753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 24763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 24773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::AND: 24783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::OR: 24793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::XOR: { // Simple logical operators -> two trivial pieces. 24803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LL, LH, RL, RH; 24813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), LL, LH); 24823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), RL, RH); 24833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(Node->getOpcode(), NVT, LL, RL); 24843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getNode(Node->getOpcode(), NVT, LH, RH); 24853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 24863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 24873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SELECT: { 24883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand C, LL, LH, RL, RH; 248947e9223e06390897c3834f8c527001df392570ffChris Lattner 249047e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 249147e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 249247e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 249347e9223e06390897c3834f8c527001df392570ffChris Lattner C = LegalizeOp(Node->getOperand(0)); // Legalize the condition. 249447e9223e06390897c3834f8c527001df392570ffChris Lattner break; 249547e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 249647e9223e06390897c3834f8c527001df392570ffChris Lattner C = PromoteOp(Node->getOperand(0)); // Promote the condition. 249747e9223e06390897c3834f8c527001df392570ffChris Lattner break; 249847e9223e06390897c3834f8c527001df392570ffChris Lattner } 24993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), LL, LH); 25003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(2), RL, RH); 25013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, C, LL, RL); 25023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, C, LH, RH); 25033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 25043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 25053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SIGN_EXTEND: { 250606098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner SDOperand In; 250706098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 250806098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Expand: assert(0 && "expand-expand not implemented yet!"); 250906098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Legal: In = LegalizeOp(Node->getOperand(0)); break; 251006098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Promote: 251106098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner In = PromoteOp(Node->getOperand(0)); 251206098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner // Emit the appropriate sign_extend_inreg to get the value we want. 251306098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner In = DAG.getNode(ISD::SIGN_EXTEND_INREG, In.getValueType(), In, 251406098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner Node->getOperand(0).getValueType()); 251506098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner break; 251606098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner } 251706098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner 25183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The low part is just a sign extension of the input (which degenerates to 25193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // a copy). 252006098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner Lo = DAG.getNode(ISD::SIGN_EXTEND, NVT, In); 2521edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 25223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The high part is obtained by SRA'ing all but one of the bits of the lo 25233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // part. 25242dad454af674cb41a14a85ad6ce5c85c43959acdChris Lattner unsigned LoSize = MVT::getSizeInBits(Lo.getValueType()); 252527ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner Hi = DAG.getNode(ISD::SRA, NVT, Lo, DAG.getConstant(LoSize-1, 252627ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner TLI.getShiftAmountTy())); 25273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 25283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 252906098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case ISD::ZERO_EXTEND: { 253006098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner SDOperand In; 253106098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 253206098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Expand: assert(0 && "expand-expand not implemented yet!"); 253306098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Legal: In = LegalizeOp(Node->getOperand(0)); break; 253406098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner case Promote: 253506098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner In = PromoteOp(Node->getOperand(0)); 253606098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner // Emit the appropriate zero_extend_inreg to get the value we want. 253723993561e24b2a6eaf0e036062522ab825c30d3fChris Lattner In = DAG.getZeroExtendInReg(In, Node->getOperand(0).getValueType()); 253806098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner break; 253906098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner } 254006098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner 25413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The low part is just a zero extension of the input (which degenerates to 25423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // a copy). 2543dea29e25c32d2651e2efaff67bc30803ea24d991Chris Lattner Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, In); 2544edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 25453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The high part is just a zero. 25463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getConstant(0, NVT); 25473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 254806098e0e9bd542f227aa3802768d1416e79e9f45Chris Lattner } 25494e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // These operators cannot be expanded directly, emit them as calls to 25504e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // library functions. 25514e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner case ISD::FP_TO_SINT: 25524e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner if (Node->getOperand(0).getValueType() == MVT::f32) 255377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixsfdi", Node, Hi); 25544e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner else 255577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixdfdi", Node, Hi); 25564e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner break; 25574e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner case ISD::FP_TO_UINT: 25584e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner if (Node->getOperand(0).getValueType() == MVT::f32) 255977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixunssfdi", Node, Hi); 25604e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner else 256177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixunsdfdi", Node, Hi); 25624e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner break; 25634e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner 2564e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SHL: 2565e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 256677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SHL, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 2567e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 25684759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 25694759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner // If this target supports SHL_PARTS, use it. 25704759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner if (TLI.getOperationAction(ISD::SHL_PARTS, NVT) == TargetLowering::Legal) { 25715b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner ExpandShiftParts(ISD::SHL_PARTS, Node->getOperand(0), Node->getOperand(1), 25725b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Lo, Hi); 25734759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner break; 25744759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner } 25754759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 2576e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 257777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__ashldi3", Node, Hi); 2578e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 2579e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2580e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SRA: 2581e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 258277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SRA, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 2583e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 25844759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 25854759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner // If this target supports SRA_PARTS, use it. 25864759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner if (TLI.getOperationAction(ISD::SRA_PARTS, NVT) == TargetLowering::Legal) { 25875b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner ExpandShiftParts(ISD::SRA_PARTS, Node->getOperand(0), Node->getOperand(1), 25885b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Lo, Hi); 25894759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner break; 25904759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner } 25914759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 2592e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 259377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__ashrdi3", Node, Hi); 2594e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 2595e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SRL: 2596e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 259777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SRL, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 2598e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 25994759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 26004759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner // If this target supports SRL_PARTS, use it. 26014759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner if (TLI.getOperationAction(ISD::SRL_PARTS, NVT) == TargetLowering::Legal) { 26025b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner ExpandShiftParts(ISD::SRL_PARTS, Node->getOperand(0), Node->getOperand(1), 26035b359c6c4f052e41579ad7da9af37db4f54207d9Chris Lattner Lo, Hi); 26044759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner break; 26054759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner } 26064759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner 2607e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 260877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__lshrdi3", Node, Hi); 2609e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 2610e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2611edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman case ISD::ADD: 26124759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner ExpandByParts(ISD::ADD_PARTS, Node->getOperand(0), Node->getOperand(1), 26134759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner Lo, Hi); 261484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 261584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::SUB: 26164759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner ExpandByParts(ISD::SUB_PARTS, Node->getOperand(0), Node->getOperand(1), 26174759982a2d4ab597fb69d4a1113d0f35e673a4e1Chris Lattner Lo, Hi); 261884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 2619c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman case ISD::MUL: { 2620c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman if (TLI.getOperationAction(ISD::MULHU, NVT) == TargetLowering::Legal) { 2621c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman SDOperand LL, LH, RL, RH; 2622c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman ExpandOp(Node->getOperand(0), LL, LH); 2623c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman ExpandOp(Node->getOperand(1), RL, RH); 2624c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); 2625c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman RH = DAG.getNode(ISD::MUL, NVT, LL, RH); 2626c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman LH = DAG.getNode(ISD::MUL, NVT, LH, RL); 2627c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); 2628c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); 2629c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); 2630c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman } else { 2631c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman Lo = ExpandLibCall("__muldi3" , Node, Hi); break; 2632c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman } 2633c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman break; 2634c7c16575fea9aeffe8a63ddabe7c3c25f81ed799Nate Begeman } 263577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::SDIV: Lo = ExpandLibCall("__divdi3" , Node, Hi); break; 263677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::UDIV: Lo = ExpandLibCall("__udivdi3", Node, Hi); break; 263777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::SREM: Lo = ExpandLibCall("__moddi3" , Node, Hi); break; 263877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::UREM: Lo = ExpandLibCall("__umoddi3", Node, Hi); break; 26393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 26403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 26413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remember in a map if the values will be reused later. 26423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!Node->hasOneUse()) { 26433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isNew = ExpandedNodes.insert(std::make_pair(Op, 26443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::make_pair(Lo, Hi))).second; 26453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isNew && "Value already expanded?!?"); 26463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 26473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 26483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 26493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 26503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 26513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 26529c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnervoid SelectionDAG::Legalize() { 26533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 26543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 26559c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SelectionDAGLegalize(*this).Run(); 26563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 26573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2658