LegalizeDAG.cpp revision ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8f
13e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===-- LegalizeDAG.cpp - Implement SelectionDAG::Legalize ----------------===// 23e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 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. 73e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 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" 213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Constants.h" 223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include <iostream> 233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerclass SelectionDAGLegalize { 393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TargetLowering &TLI; 403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizeAction - This enum indicates what action we should take for each 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type the can occur in the program. 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Legal, // The target natively supports this value type. 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Promote, // This should be promoted to the next larger type. 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Expand, // This integer type should be broken into smaller pieces. 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner unsigned ValueTypeActions; 543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// NeedsAnotherIteration - This is set when we expand a large integer 563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// operation into smaller integer operations, but the smaller operations are 573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// not set. This occurs only rarely in practice, for targets that don't have 583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 32-bit or larger integer registers. 593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool NeedsAnotherIteration; 603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::map<SDOperand, SDOperand> LegalizedNodes; 653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 6603c8546ec57523970874917854a2fb77b1ff598eChris Lattner /// PromotedNodes - For nodes that are below legal width, and that have more 6703c8546ec57523970874917854a2fb77b1ff598eChris Lattner /// than one use, this map indicates what promoted value to use. This allows 6803c8546ec57523970874917854a2fb77b1ff598eChris Lattner /// us to avoid promoting the same thing more than once. 6903c8546ec57523970874917854a2fb77b1ff598eChris Lattner std::map<SDOperand, SDOperand> PromotedNodes; 7003c8546ec57523970874917854a2fb77b1ff598eChris Lattner 713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ExpandedNodes - For nodes that need to be expanded, and which have more 723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates which which operands are the expanded 733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// version of the input. This allows us to avoid expanding the same node 743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// more than once. 753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::map<SDOperand, std::pair<SDOperand, SDOperand> > ExpandedNodes; 763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 778afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner void AddLegalizedOperand(SDOperand From, SDOperand To) { 788afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner bool isNew = LegalizedNodes.insert(std::make_pair(From, To)).second; 798afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner assert(isNew && "Got into the map somehow?"); 808afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 8103c8546ec57523970874917854a2fb77b1ff598eChris Lattner void AddPromotedOperand(SDOperand From, SDOperand To) { 8203c8546ec57523970874917854a2fb77b1ff598eChris Lattner bool isNew = PromotedNodes.insert(std::make_pair(From, To)).second; 8303c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isNew && "Got into the map somehow?"); 8403c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 858afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 889c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SelectionDAGLegalize(SelectionDAG &DAG); 893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// Run - While there is still lowering to do, perform a pass over the DAG. 913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// Most regularization can be done in a single pass, but targets that require 923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// large values to be split into registers multiple times (e.g. i64 -> 4x 933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// i16) require iteration for these values (the first iteration will demote 943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// to i32, the second will demote to i16). 953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void Run() { 963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner do { 973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NeedsAnotherIteration = false; 983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizeDAG(); 993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } while (NeedsAnotherIteration); 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 1053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizeAction getTypeAction(MVT::ValueType VT) const { 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return (LegalizeAction)((ValueTypeActions >> (2*VT)) & 3); 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 1113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isTypeLegal(MVT::ValueType VT) const { 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerprivate: 1163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LegalizeOp(SDOperand O); 1193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void ExpandOp(SDOperand O, SDOperand &Lo, SDOperand &Hi); 12003c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand PromoteOp(SDOperand O); 1213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 12277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand ExpandLibCall(const char *Name, SDNode *Node, 12377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand &Hi); 12477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand ExpandIntToFP(bool isSigned, MVT::ValueType DestTy, 12577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Source); 126e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner bool ExpandShift(unsigned Opc, SDOperand Op, SDOperand Amt, 127e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand &Lo, SDOperand &Hi); 12884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner void ExpandAddSub(bool isAdd, SDOperand Op, SDOperand Amt, 12984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner SDOperand &Lo, SDOperand &Hi); 130e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand getIntPtrConstant(uint64_t Val) { 1323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return DAG.getConstant(Val, TLI.getPointerTy()); 1333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1389c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris LattnerSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag) 1399c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner : TLI(dag.getTargetLoweringInfo()), DAG(dag), 1409c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner ValueTypeActions(TLI.getValueTypeActions()) { 1413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::LAST_VALUETYPE <= 16 && 1423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 1433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 1463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand OldRoot = DAG.getRoot(); 1473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand NewRoot = LegalizeOp(OldRoot); 1483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner DAG.setRoot(NewRoot); 1493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandedNodes.clear(); 1513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 15271c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner PromotedNodes.clear(); 1533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 15562fd269c146d9023efe32644e44cd97b88631d4fChris Lattner DAG.RemoveDeadNodes(OldRoot.Val); 1563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris LattnerSDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { 159e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner assert(getTypeAction(Op.getValueType()) == Legal && 160e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner "Caller should expand or promote operands that are not legal!"); 161e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 1623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If this operation defines any values that cannot be represented in a 163e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner // register on this target, make sure to expand or promote them. 164e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner if (Op.Val->getNumValues() > 1) { 1653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 0, e = Op.Val->getNumValues(); i != e; ++i) 1663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Op.Val->getValueType(i))) { 1673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: break; // Nothing to do. 1683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 1693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand T1, T2; 1703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Op.getValue(i), T1, T2); 1713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(LegalizedNodes.count(Op) && 1723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Expansion didn't add legal operands!"); 1733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return LegalizedNodes[Op]; 1743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 17603c8546ec57523970874917854a2fb77b1ff598eChris Lattner PromoteOp(Op.getValue(i)); 17703c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(LegalizedNodes.count(Op) && 17803c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Expansion didn't add legal operands!"); 17903c8546ec57523970874917854a2fb77b1ff598eChris Lattner return LegalizedNodes[Op]; 1803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 183e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::map<SDOperand, SDOperand>::iterator I = LegalizedNodes.find(Op); 184e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 1853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 186fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner SDOperand Tmp1, Tmp2, Tmp3; 1873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Result = Op; 1893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDNode *Node = Op.Val; 1903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 1923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 1933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 1943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(0 && "Do not know how to legalize this operator!"); 1953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner abort(); 1963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::EntryToken: 1973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::FrameIndex: 1983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::GlobalAddress: 19903c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::ExternalSymbol: 20069a52155d2eff066b49dbac385113002fd9dba14Chris Lattner case ISD::ConstantPool: // Nothing to do. 2013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(getTypeAction(Node->getValueType(0)) == Legal && 2023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "This must be legal!"); 2033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 20469a52155d2eff066b49dbac385113002fd9dba14Chris Lattner case ISD::CopyFromReg: 20569a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 20669a52155d2eff066b49dbac385113002fd9dba14Chris Lattner if (Tmp1 != Node->getOperand(0)) 20769a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Result = DAG.getCopyFromReg(cast<RegSDNode>(Node)->getReg(), 20869a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Node->getValueType(0), Tmp1); 20913c184de29c09294ed63b01ac43e1b46c049278eChris Lattner else 21013c184de29c09294ed63b01ac43e1b46c049278eChris Lattner Result = Op.getValue(0); 21113c184de29c09294ed63b01ac43e1b46c049278eChris Lattner 21213c184de29c09294ed63b01ac43e1b46c049278eChris Lattner // Since CopyFromReg produces two values, make sure to remember that we 21313c184de29c09294ed63b01ac43e1b46c049278eChris Lattner // legalized both of them. 21413c184de29c09294ed63b01ac43e1b46c049278eChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 21513c184de29c09294ed63b01ac43e1b46c049278eChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 21613c184de29c09294ed63b01ac43e1b46c049278eChris Lattner return Result.getValue(Op.ResNo); 21718c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner case ISD::ImplicitDef: 21818c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 21918c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner if (Tmp1 != Node->getOperand(0)) 2202ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner Result = DAG.getImplicitDef(Tmp1, cast<RegSDNode>(Node)->getReg()); 22118c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner break; 222fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: { 223fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman MVT::ValueType VT = Op.getValueType(); 224fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman switch (TLI.getOperationAction(ISD::UNDEF, VT)) { 225ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman default: assert(0 && "This action is not supported yet!"); 226ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Expand: 227ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Promote: 228fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman if (MVT::isInteger(VT)) 229fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getConstant(0, VT); 230fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman else if (MVT::isFloatingPoint(VT)) 231fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getConstantFP(0, VT); 232fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman else 233fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman assert(0 && "Unknown value type!"); 234fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 235ea19cd51aaf87c5cc19e7cdc2c32ddbefcac7b8fNate Begeman case TargetLowering::Legal: 236fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 237fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman } 238fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 239fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman } 2403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::Constant: 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // We know we don't need to expand constants here, constants only have one 2423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // value and we check that it is fine above. 2433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // FIXME: Maybe we should handle things like targets that don't support full 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // 32-bit immediates? 2463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 2473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ConstantFP: { 2483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Spill FP immediates to the constant pool if the target cannot directly 2493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // codegen them. Targets often have some immediate values that can be 2503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // efficiently generated into an FP register without a load. We explicitly 2513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // leave these constants as ConstantFP nodes for the target to deal with. 2523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Check to see if this FP immediate is already legal. 2563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isLegal = false; 2573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(), 2583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner E = TLI.legal_fpimm_end(); I != E; ++I) 2593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (CFP->isExactlyValue(*I)) { 2603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner isLegal = true; 2613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 2623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!isLegal) { 2653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Otherwise we need to spill the constant to memory. 2663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MachineConstantPool *CP = DAG.getMachineFunction().getConstantPool(); 2673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool Extend = false; 2693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If a FP immediate is precise when represented as a float, we put it 2713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // into the constant pool as a float, even if it's is statically typed 2723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // as a double. 2733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MVT::ValueType VT = CFP->getValueType(0); 2743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isDouble = VT == MVT::f64; 2753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ConstantFP *LLVMC = ConstantFP::get(isDouble ? Type::DoubleTy : 2763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Type::FloatTy, CFP->getValue()); 27799939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner if (isDouble && CFP->isExactlyValue((float)CFP->getValue()) && 27899939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner // Only do this if the target has a native EXTLOAD instruction from 27999939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner // f32. 28099939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner TLI.getOperationAction(ISD::EXTLOAD, 28199939d39c9555ebecbcd24c1b607eae52804ea37Chris Lattner MVT::f32) == TargetLowering::Legal) { 2823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LLVMC = cast<ConstantFP>(ConstantExpr::getCast(LLVMC, Type::FloatTy)); 2833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner VT = MVT::f32; 2843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Extend = true; 2853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand CPIdx = DAG.getConstantPool(CP->getConstantPoolIndex(LLVMC), 2883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TLI.getPointerTy()); 289f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner if (Extend) { 290f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::EXTLOAD, MVT::f64, DAG.getEntryNode(), CPIdx, 291f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner MVT::f32); 292f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner } else { 293f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getLoad(VT, DAG.getEntryNode(), CPIdx); 294f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner } 2953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 2973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 298a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner case ISD::TokenFactor: { 299a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner std::vector<SDOperand> Ops; 300a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner bool Changed = false; 301a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 3021e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner SDOperand Op = Node->getOperand(i); 3031e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner // Fold single-use TokenFactor nodes into this token factor as we go. 3041e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner if (Op.getOpcode() == ISD::TokenFactor && Op.hasOneUse()) { 3051e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Changed = true; 3061e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner for (unsigned j = 0, e = Op.getNumOperands(); j != e; ++j) 3071e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Ops.push_back(LegalizeOp(Op.getOperand(j))); 3081e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner } else { 3091e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Ops.push_back(LegalizeOp(Op)); // Legalize the operands 3101e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Changed |= Ops[i] != Op; 3111e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner } 312a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner } 313a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner if (Changed) 314a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Ops); 315a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner break; 316a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner } 317a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner 3183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ADJCALLSTACKDOWN: 3193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ADJCALLSTACKUP: 3203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 3213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // There is no need to legalize the size argument (Operand #1) 3223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 3233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Tmp1, 3243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Node->getOperand(1)); 3253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 326fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner case ISD::DYNAMIC_STACKALLOC: 327fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 328fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the size. 329fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the alignment. 330fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 331fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp3 != Node->getOperand(2)) 332fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Result = DAG.getNode(ISD::DYNAMIC_STACKALLOC, Node->getValueType(0), 333fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp1, Tmp2, Tmp3); 334513e52ec4e20048a8f491498d219a2669283f3bdChris Lattner else 335513e52ec4e20048a8f491498d219a2669283f3bdChris Lattner Result = Op.getValue(0); 336fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner 337fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner // Since this op produces two values, make sure to remember that we 338fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner // legalized both of them. 339fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 340fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 341fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner return Result.getValue(Op.ResNo); 342fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner 3433d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner case ISD::CALL: { 3443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 3453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 3463d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 3473d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner bool Changed = false; 3483d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 3493d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) { 3503d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 3513d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 3523d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 3533d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 3543d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || Changed) { 3553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<MVT::ValueType> RetTyVTs; 3563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.reserve(Node->getNumValues()); 3573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 358ebda942efcb86634a6581aae76a0d0c92c4a232eChris Lattner RetTyVTs.push_back(Node->getValueType(i)); 3593d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Result = SDOperand(DAG.getCall(RetTyVTs, Tmp1, Tmp2, Ops), 0); 36038d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner } else { 36138d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner Result = Result.getValue(0); 3623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 36338d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner // Since calls produce multiple values, make sure to remember that we 36438d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner // legalized all of them. 36538d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 36638d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner AddLegalizedOperand(SDOperand(Node, i), Result.getValue(i)); 36738d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner return Result.getValue(Op.ResNo); 3683d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 369c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner case ISD::BR: 370c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 371c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner if (Tmp1 != Node->getOperand(0)) 372c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner Result = DAG.getNode(ISD::BR, MVT::Other, Tmp1, Node->getOperand(1)); 373c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner break; 374c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner 375c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner case ISD::BRCOND: 376c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 37747e9223e06390897c3834f8c527001df392570ffChris Lattner 37847e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 37947e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 38047e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 38147e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the condition. 38247e9223e06390897c3834f8c527001df392570ffChris Lattner break; 38347e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 38447e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Promote the condition. 38547e9223e06390897c3834f8c527001df392570ffChris Lattner break; 38647e9223e06390897c3834f8c527001df392570ffChris Lattner } 387c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner // Basic block destination (Op#2) is always legal. 388c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 389c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Result = DAG.getNode(ISD::BRCOND, MVT::Other, Tmp1, Tmp2, 390c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Node->getOperand(2)); 391c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner break; 392c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner 3933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::LOAD: 3943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 3953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 3963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || 3973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(1)) 3983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getLoad(Node->getValueType(0), Tmp1, Tmp2); 3998afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner else 4008afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner Result = SDOperand(Node, 0); 4018afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 4028afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner // Since loads produce two values, make sure to remember that we legalized 4038afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner // both of them. 4048afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 4058afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 4068afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner return Result.getValue(Op.ResNo); 4073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4080f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::EXTLOAD: 4090f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::SEXTLOAD: 4100f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::ZEXTLOAD: 4110f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4120f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 4130f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (Tmp1 != Node->getOperand(0) || 4140f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 != Node->getOperand(1)) 4150f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, Tmp2, 4160f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner cast<MVTSDNode>(Node)->getExtraValueType()); 4170f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner else 4180f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = SDOperand(Node, 0); 4190f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 4200f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // Since loads produce two values, make sure to remember that we legalized 4210f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // both of them. 4220f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 4230f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 4240f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner return Result.getValue(Op.ResNo); 4250f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 4263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::EXTRACT_ELEMENT: 4273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Get both the low and high parts. 4283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 4293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (cast<ConstantSDNode>(Node->getOperand(1))->getValue()) 4303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = Tmp2; // 1 -> Hi 4313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner else 4323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = Tmp1; // 0 -> Lo 4333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CopyToReg: 4363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 4393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 4403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Legalize the incoming value (must be legal). 4413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 4423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 44318c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner Result = DAG.getCopyToReg(Tmp1, Tmp2, cast<RegSDNode>(Node)->getReg()); 4443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 445ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case Promote: 446ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 447ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Result = DAG.getCopyToReg(Tmp1, Tmp2, cast<RegSDNode>(Node)->getReg()); 448ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner break; 449ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case Expand: 4503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 4513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 45218c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner unsigned Reg = cast<RegSDNode>(Node)->getReg(); 453ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Lo = DAG.getCopyToReg(Tmp1, Lo, Reg); 454ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi = DAG.getCopyToReg(Tmp1, Hi, Reg+1); 455ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // Note that the copytoreg nodes are independent of each other. 456ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 4573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(Result.getValueType()) && 4583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Cannot expand multiple times yet (i64 -> i16)"); 4593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::RET: 4643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getNumOperands()) { 4663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case 2: // ret val 4673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 4683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 4693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 4708afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 4713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Tmp2); 4723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 4743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 4753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 4763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Lo, Hi); 4773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 4808b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 4818b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Tmp2); 4828b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 4833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case 1: // ret void 4863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 4873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1); 4883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: { // ret <values> 4903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<SDOperand> NewValues; 4913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Tmp1); 4923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) 4933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(i).getValueType())) { 4943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 4954e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner NewValues.push_back(LegalizeOp(Node->getOperand(i))); 4963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 4983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 4993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(i), Lo, Hi); 5003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Lo); 5013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Hi); 5023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 5058b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "Can't promote multiple return value yet!"); 5063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, NewValues); 5083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::STORE: 5133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 5143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. 5153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 5165d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 51703c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (ConstantFPSDNode *CFP =dyn_cast<ConstantFPSDNode>(Node->getOperand(1))){ 5185d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner if (CFP->getValueType(0) == MVT::f32) { 5195d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner union { 5205d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner unsigned I; 5215d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner float F; 5225d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } V; 5235d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner V.F = CFP->getValue(); 5245d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, 5255d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner DAG.getConstant(V.I, MVT::i32), Tmp2); 5265d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } else { 5275d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner assert(CFP->getValueType(0) == MVT::f64 && "Unknown FP type!"); 5285d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner union { 5295d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner uint64_t I; 5305d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner double F; 5315d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } V; 5325d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner V.F = CFP->getValue(); 5335d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, 5345d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner DAG.getConstant(V.I, MVT::i64), Tmp2); 5355d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } 53684734ce8ef1a21eb347d4deca0bf32d59001f751Chris Lattner Node = Result.Val; 5375d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } 5385d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner 5393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 5403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: { 5413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Val = LegalizeOp(Node->getOperand(1)); 5423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Val != Node->getOperand(1) || Tmp1 != Node->getOperand(0) || 5433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(2)) 5443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Val, Tmp2); 5453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 54803c8546ec57523970874917854a2fb77b1ff598eChris Lattner // Truncate the value and store the result. 54903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp3 = PromoteOp(Node->getOperand(1)); 55003c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Tmp1, Tmp3, Tmp2, 55103c8546ec57523970874917854a2fb77b1ff598eChris Lattner Node->getOperand(1).getValueType()); 55203c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 55303c8546ec57523970874917854a2fb77b1ff598eChris Lattner 5543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: 5553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 5563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 5573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 5583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!TLI.isLittleEndian()) 5593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::swap(Lo, Hi); 5603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 561ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Lo = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Lo, Tmp2); 5623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 563ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner unsigned IncrementSize = MVT::getSizeInBits(Hi.getValueType())/8; 5643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getNode(ISD::ADD, Tmp2.getValueType(), Tmp2, 5653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner getIntPtrConstant(IncrementSize)); 5663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(Tmp2.getValueType()) && 5673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Pointers must be legal!"); 568ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Hi, Tmp2); 569ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 570ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner break; 5713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 57395762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth case ISD::PCMARKER: 57495762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 57595762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth Result = DAG.getNode(ISD::PCMARKER, MVT::Other, Tmp1, Node->getOperand(1)); 57695762124a1d781cc0f8cbc4c22e9c5c1358d7ea0Andrew Lenharth break; 5770f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::TRUNCSTORE: 5780f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 5790f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. 5800f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 5810f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 5820f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Legal: 5830f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 5840f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 5850f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp3 != Node->getOperand(2)) 58645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Tmp1, Tmp2, Tmp3, 5870f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner cast<MVTSDNode>(Node)->getExtraValueType()); 5880f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 5890f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Promote: 5900f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Expand: 5910f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner assert(0 && "Cannot handle illegal TRUNCSTORE yet!"); 5920f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner } 5930f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 5942ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner case ISD::SELECT: 59547e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 59647e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 59747e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 59847e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the condition. 59947e9223e06390897c3834f8c527001df392570ffChris Lattner break; 60047e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 60147e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // Promote the condition. 60247e9223e06390897c3834f8c527001df392570ffChris Lattner break; 60347e9223e06390897c3834f8c527001df392570ffChris Lattner } 6043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // TrueVal 6052ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // FalseVal 60655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner 60755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), Tmp2.getValueType())) { 60855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action is not supported yet!"); 60955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 61055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 61155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp3 != Node->getOperand(2)) 61255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(ISD::SELECT, Node->getValueType(0), 61355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp1, Tmp2, Tmp3); 61455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 61555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Promote: { 61655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner MVT::ValueType NVT = 61755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TLI.getTypeToPromoteTo(ISD::SELECT, Tmp2.getValueType()); 61855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner unsigned ExtOp, TruncOp; 61955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (MVT::isInteger(Tmp2.getValueType())) { 62055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtOp = ISD::ZERO_EXTEND; 62155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TruncOp = ISD::TRUNCATE; 62255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } else { 62355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtOp = ISD::FP_EXTEND; 62455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TruncOp = ISD::FP_ROUND; 62555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 62655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner // Promote each of the values to the new type. 62755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp2 = DAG.getNode(ExtOp, NVT, Tmp2); 62855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp3 = DAG.getNode(ExtOp, NVT, Tmp3); 62955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner // Perform the larger operation, then round down. 63055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(ISD::SELECT, NVT, Tmp1, Tmp2,Tmp3); 63155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(TruncOp, Node->getValueType(0), Result); 63255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 63355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 63455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 6353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETCC: 6373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 6383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 6393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 6403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 6413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 6423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 643f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, Tmp2); 6443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 6468b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // LHS 6478b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // RHS 6488b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 6498b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // If this is an FP compare, the operands have already been extended. 6508b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isInteger(Node->getOperand(0).getValueType())) { 6518b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner MVT::ValueType VT = Node->getOperand(0).getValueType(); 65271c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 6538b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 6548b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Otherwise, we have to insert explicit sign or zero extends. Note 6558b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // that we could insert sign extends for ALL conditions, but zero extend 6568b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // is cheaper on many machines (an AND instead of two shifts), so prefer 6578b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // it. 6588b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 6598b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner default: assert(0 && "Unknown integer comparison!"); 6608b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETEQ: 6618b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETNE: 6628b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETUGE: 6638b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETUGT: 6648b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETULE: 6658b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETULT: 6668b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // ALL of these operations will work if we either sign or zero extend 6678b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // the operands (including the unsigned comparisons!). Zero extend is 6688b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // usually a simpler/cheaper operation, so prefer it. 6698b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp1, VT); 6708b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp2, VT); 6718b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 6728b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETGE: 6738b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETGT: 6748b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETLT: 6758b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETLE: 6768b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 6778b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2, VT); 6788b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 6798b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 6808b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 6818b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 6828b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 683f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, Tmp2); 6843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: 6863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LHSLo, LHSHi, RHSLo, RHSHi; 6873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), LHSLo, LHSHi); 6883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), RHSLo, RHSHi); 6893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 6903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETEQ: 6913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETNE: 6923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSLo, RHSLo); 6933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSHi, RHSHi); 6943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = DAG.getNode(ISD::OR, Tmp1.getValueType(), Tmp1, Tmp2); 695f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 696f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, 6973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner DAG.getConstant(0, Tmp1.getValueType())); 6983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 7003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // FIXME: This generated code sucks. 7013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ISD::CondCode LowCC; 7023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 7033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: assert(0 && "Unknown integer setcc!"); 7043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETLT: 7053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 7063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETGT: 7073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 7083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETLE: 7093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 7103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETGE: 7113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 7123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 7143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 7153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 7163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 7173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 7183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 7193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 720f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Tmp1 = DAG.getSetCC(LowCC, Node->getValueType(0), LHSLo, RHSLo); 7213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 722f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), LHSHi, RHSHi); 723f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getSetCC(ISD::SETEQ, Node->getValueType(0), LHSHi, RHSHi); 724f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getNode(ISD::SELECT, Tmp1.getValueType(), 725f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result, Tmp1, Tmp2); 7263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 7293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 731e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMSET: 732e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMCPY: 733e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMMOVE: { 734deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Chain 735e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Pointer 736e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner 737e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner if (Node->getOpcode() == ISD::MEMSET) { // memset = ubyte 738e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner switch (getTypeAction(Node->getOperand(2).getValueType())) { 739e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Expand: assert(0 && "Cannot expand a byte!"); 740e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Legal: 741deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); 742e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 743e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Promote: 744deb692e756cd3826e4ecc6eaec3397177c8b89ceChris Lattner Tmp3 = PromoteOp(Node->getOperand(2)); 745e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 746e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 747e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } else { 748e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // memcpy/move = pointer, 749e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 750272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner 751272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner SDOperand Tmp4; 752272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner switch (getTypeAction(Node->getOperand(3).getValueType())) { 753e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Expand: assert(0 && "Cannot expand this yet!"); 754e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Legal: 755e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp4 = LegalizeOp(Node->getOperand(3)); 756e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 757e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner case Promote: 758e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp4 = PromoteOp(Node->getOperand(3)); 759272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner break; 760272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner } 761272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner 762272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner SDOperand Tmp5; 763272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner switch (getTypeAction(Node->getOperand(4).getValueType())) { // uint 764272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Expand: assert(0 && "Cannot expand this yet!"); 765272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Legal: 766272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner Tmp5 = LegalizeOp(Node->getOperand(4)); 767272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner break; 768272455b404eabe70ce9e033ba19ec1b6cfe603a5Chris Lattner case Promote: 769e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner Tmp5 = PromoteOp(Node->getOperand(4)); 770e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner break; 771e560521f1af300a10717ca5c73d42df9ffb1b121Chris Lattner } 77255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner 77355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), MVT::Other)) { 77455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action not implemented for this operation!"); 77555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 776e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 777e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 != Node->getOperand(2) || Tmp4 != Node->getOperand(3) || 778e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp5 != Node->getOperand(4)) { 779e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::vector<SDOperand> Ops; 780e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 781e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Ops.push_back(Tmp4); Ops.push_back(Tmp5); 782e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Ops); 783e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 78455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 78555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Expand: { 786e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // Otherwise, the target does not support this operation. Lower the 787e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // operation to an explicit libcall as appropriate. 788e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner MVT::ValueType IntPtr = TLI.getPointerTy(); 789e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner const Type *IntPtrTy = TLI.getTargetData().getIntPtrType(); 790e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::vector<std::pair<SDOperand, const Type*> > Args; 791e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner 7923bfbf4ea990930d153e58e153f319408341a94feReid Spencer const char *FnName = 0; 793e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (Node->getOpcode() == ISD::MEMSET) { 794e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp2, IntPtrTy)); 795e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // Extend the ubyte argument to be an int value for the call. 796e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 = DAG.getNode(ISD::ZERO_EXTEND, MVT::i32, Tmp3); 797e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp3, Type::IntTy)); 798e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp4, IntPtrTy)); 799e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner 800e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner FnName = "memset"; 801e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } else if (Node->getOpcode() == ISD::MEMCPY || 802e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Node->getOpcode() == ISD::MEMMOVE) { 803e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp2, IntPtrTy)); 804e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp3, IntPtrTy)); 805e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp4, IntPtrTy)); 806e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner FnName = Node->getOpcode() == ISD::MEMMOVE ? "memmove" : "memcpy"; 807e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } else { 808e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner assert(0 && "Unknown op!"); 809e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 810e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::pair<SDOperand,SDOperand> CallResult = 8118e21e71b248365c69c0f666518c378b5819ce6fbNate Begeman TLI.LowerCallTo(Tmp1, Type::VoidTy, false, 812e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner DAG.getExternalSymbol(FnName, IntPtr), Args, DAG); 813e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Result = LegalizeOp(CallResult.second); 81455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 81555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 81655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Custom: 81755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner std::vector<SDOperand> Ops; 81855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 81955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Ops.push_back(Tmp4); Ops.push_back(Tmp5); 82055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Ops); 82155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = TLI.LowerOperation(Result); 82255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = LegalizeOp(Result); 82355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 824e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 825e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner break; 826e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 82784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::ADD_PARTS: 82884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::SUB_PARTS: { 82984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner std::vector<SDOperand> Ops; 83084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner bool Changed = false; 83184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 83284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 83384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 83484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner } 83584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner if (Changed) 83684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Ops); 83784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 83884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner } 8393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ADD: 8403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SUB: 8413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::MUL: 8423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::UDIV: 8433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SDIV: 8443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::UREM: 8453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SREM: 8463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::AND: 8473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::OR: 8483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::XOR: 84903c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SHL: 85003c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SRL: 85103c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SRA: 8523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 8533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 8543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || 8553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(1)) 8563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1,Tmp2); 8573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 8583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ZERO_EXTEND: 8593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SIGN_EXTEND: 8607cc4777a263f6a52877d29201311fde5f6edb632Chris Lattner case ISD::TRUNCATE: 86103c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::FP_EXTEND: 86203c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::FP_ROUND: 863ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::FP_TO_SINT: 864ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::FP_TO_UINT: 865ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::SINT_TO_FP: 866ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::UINT_TO_FP: 8673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 8683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 8693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 8703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 8713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 8723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 873b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner case Expand: 87477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (Node->getOpcode() == ISD::SINT_TO_FP || 87577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getOpcode() == ISD::UINT_TO_FP) { 87677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, 87777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getValueType(0), Node->getOperand(0)); 87877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = LegalizeOp(Result); 87977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner break; 88077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 881b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner // In the expand case, we must be dealing with a truncate, because 882b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner // otherwise the result would be larger than the source. 883b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner assert(Node->getOpcode() == ISD::TRUNCATE && 884b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner "Shouldn't need to expand other operators here!"); 885b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 886b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner 887b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner // Since the result is legal, we should just be able to truncate the low 888b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner // part of the source. 889b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner Result = DAG.getNode(ISD::TRUNCATE, Node->getValueType(0), Tmp1); 890b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner break; 891b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner 89203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Promote: 89303c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (Node->getOpcode()) { 8941713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner case ISD::ZERO_EXTEND: 8951713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 89647e9223e06390897c3834f8c527001df392570ffChris Lattner // NOTE: Any extend would work here... 89747e9223e06390897c3834f8c527001df392570ffChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, Op.getValueType(), Result); 89847e9223e06390897c3834f8c527001df392570ffChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND_INREG, Op.getValueType(), 8991713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result, Node->getOperand(0).getValueType()); 90003c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 90103c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SIGN_EXTEND: 9021713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 90347e9223e06390897c3834f8c527001df392570ffChris Lattner // NOTE: Any extend would work here... 904d5d56825123665b60d4eada0a4ad7d0adc5cf3a3Chris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, Op.getValueType(), Result); 9051713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 9061713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result, Node->getOperand(0).getValueType()); 9071713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 90803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::TRUNCATE: 9091713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 9101713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::TRUNCATE, Op.getValueType(), Result); 9111713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 91203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_EXTEND: 9131713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 9141713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner if (Result.getValueType() != Op.getValueType()) 9151713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner // Dynamically dead while we have only 2 FP types. 9161713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::FP_EXTEND, Op.getValueType(), Result); 9171713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 91803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_ROUND: 91903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_TO_SINT: 92003c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_TO_UINT: 921f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 922f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(Node->getOpcode(), Op.getValueType(), Result); 923f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 92403c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SINT_TO_FP: 925f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 926f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 927f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result, Node->getOperand(0).getValueType()); 928f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::SINT_TO_FP, Op.getValueType(), Result); 929f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 93003c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::UINT_TO_FP: 931f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 932f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND_INREG, Result.getValueType(), 933f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result, Node->getOperand(0).getValueType()); 934f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::UINT_TO_FP, Op.getValueType(), Result); 935f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 93603c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 9373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 9383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 9390f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::FP_ROUND_INREG: 9400f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::SIGN_EXTEND_INREG: 94145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner case ISD::ZERO_EXTEND_INREG: { 9420f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 94345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MVT::ValueType ExtraVT = cast<MVTSDNode>(Node)->getExtraValueType(); 94445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner 94545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // If this operation is not supported, convert it to a shl/shr or load/store 94645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // pair. 94755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), ExtraVT)) { 94855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action not supported for this op yet!"); 94955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 95055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (Tmp1 != Node->getOperand(0)) 95155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, 95255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtraVT); 95355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 95455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Expand: 95545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // If this is an integer extend and shifts are supported, do that. 95645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner if (Node->getOpcode() == ISD::ZERO_EXTEND_INREG) { 95745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: we could fall back on load/store here too for targets without 95845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // AND. However, it is doubtful that any exist. 95945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // AND out the appropriate bits. 96045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner SDOperand Mask = 96145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner DAG.getConstant((1ULL << MVT::getSizeInBits(ExtraVT))-1, 96245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getValueType(0)); 96345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::AND, Node->getValueType(0), 96445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getOperand(0), Mask); 96545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else if (Node->getOpcode() == ISD::SIGN_EXTEND_INREG) { 96645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: we could fall back on load/store here too for targets without 96745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // SAR. However, it is doubtful that any exist. 96845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned BitsDiff = MVT::getSizeInBits(Node->getValueType(0)) - 96945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MVT::getSizeInBits(ExtraVT); 97027ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner SDOperand ShiftCst = DAG.getConstant(BitsDiff, TLI.getShiftAmountTy()); 97145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::SHL, Node->getValueType(0), 97245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getOperand(0), ShiftCst); 97345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::SRA, Node->getValueType(0), 97445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result, ShiftCst); 97545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else if (Node->getOpcode() == ISD::FP_ROUND_INREG) { 97645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // The only way we can lower this is to turn it into a STORETRUNC, 97745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // EXTLOAD pair, targetting a temporary location (a stack slot). 97845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner 97945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: there is a choice here between constantly creating new stack 98045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // slots and always reusing the same one. We currently always create 98145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // new ones, as reuse may inhibit scheduling. 98245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner const Type *Ty = MVT::getTypeForValueType(ExtraVT); 98345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned TySize = (unsigned)TLI.getTargetData().getTypeSize(Ty); 98445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned Align = TLI.getTargetData().getTypeAlignment(Ty); 98545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MachineFunction &MF = DAG.getMachineFunction(); 98645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner int SSFI = 98745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MF.getFrameInfo()->CreateStackObject((unsigned)TySize, Align); 98845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner SDOperand StackSlot = DAG.getFrameIndex(SSFI, TLI.getPointerTy()); 98945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, DAG.getEntryNode(), 99045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getOperand(0), StackSlot, ExtraVT); 99145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::EXTLOAD, Node->getValueType(0), 99245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result, StackSlot, ExtraVT); 99345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else { 99445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner assert(0 && "Unknown op"); 99545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 99645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = LegalizeOp(Result); 99755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 99845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 9990f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 10003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 100145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 10023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 10038afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner if (!Op.Val->hasOneUse()) 10048afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(Op, Result); 10053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 10063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 10073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 10083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 10098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// PromoteOp - Given an operation that produces a value in an invalid type, 10108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// promote it to compute the value into a larger type. The produced value will 10118b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// have the correct bits for the low portion of the register, but no guarantee 10128b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// is made about the top bits: it may be zero, sign-extended, or garbage. 101303c8546ec57523970874917854a2fb77b1ff598eChris LattnerSDOperand SelectionDAGLegalize::PromoteOp(SDOperand Op) { 101403c8546ec57523970874917854a2fb77b1ff598eChris Lattner MVT::ValueType VT = Op.getValueType(); 101571c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 101603c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(getTypeAction(VT) == Promote && 101703c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Caller should expand or legalize operands that are not promotable!"); 101803c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(NVT > VT && MVT::isInteger(NVT) == MVT::isInteger(VT) && 101903c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Cannot promote to smaller type!"); 102003c8546ec57523970874917854a2fb77b1ff598eChris Lattner 102103c8546ec57523970874917854a2fb77b1ff598eChris Lattner std::map<SDOperand, SDOperand>::iterator I = PromotedNodes.find(Op); 102203c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (I != PromotedNodes.end()) return I->second; 102303c8546ec57523970874917854a2fb77b1ff598eChris Lattner 102403c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand Tmp1, Tmp2, Tmp3; 102503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 102603c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand Result; 102703c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDNode *Node = Op.Val; 102803c8546ec57523970874917854a2fb77b1ff598eChris Lattner 10290f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // Promotion needs an optimization step to clean up after it, and is not 10300f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // careful to avoid operations the target does not support. Make sure that 10310f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // all generated operations are legalized in the next iteration. 10320f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner NeedsAnotherIteration = true; 10330f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 103403c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (Node->getOpcode()) { 103503c8546ec57523970874917854a2fb77b1ff598eChris Lattner default: 103603c8546ec57523970874917854a2fb77b1ff598eChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 103703c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(0 && "Do not know how to promote this operator!"); 103803c8546ec57523970874917854a2fb77b1ff598eChris Lattner abort(); 1039fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: 1040fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Result = DAG.getNode(ISD::UNDEF, NVT); 1041fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 104203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::Constant: 104303c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, NVT, Op); 104403c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isa<ConstantSDNode>(Result) && "Didn't constant fold zext?"); 104503c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 104603c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::ConstantFP: 104703c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::FP_EXTEND, NVT, Op); 104803c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isa<ConstantFPSDNode>(Result) && "Didn't constant fold fp_extend?"); 104903c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 1050ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case ISD::CopyFromReg: 1051ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Result = DAG.getCopyFromReg(cast<RegSDNode>(Node)->getReg(), NVT, 1052ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Node->getOperand(0)); 1053ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner // Remember that we legalized the chain. 1054ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1055ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner break; 1056ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner 105782fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner case ISD::SETCC: 105882fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner assert(getTypeAction(TLI.getSetCCResultTy()) == Legal && 105982fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner "SetCC type is not legal??"); 106082fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 106182fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner TLI.getSetCCResultTy(), Node->getOperand(0), 106282fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Node->getOperand(1)); 106382fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Result = LegalizeOp(Result); 106482fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner break; 106503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 106603c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::TRUNCATE: 106703c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 106803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Legal: 106903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = LegalizeOp(Node->getOperand(0)); 107003c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(Result.getValueType() >= NVT && 107103c8546ec57523970874917854a2fb77b1ff598eChris Lattner "This truncation doesn't make sense!"); 107203c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (Result.getValueType() > NVT) // Truncate to NVT instead of VT 107303c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::TRUNCATE, NVT, Result); 107403c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 1075e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner case Promote: 1076e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner // The truncation is not required, because we don't guarantee anything 1077e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner // about high bits anyway. 1078e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner Result = PromoteOp(Node->getOperand(0)); 1079e76ad6de40b5e4c0399257b0438914c8c85ceaa1Chris Lattner break; 108003c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Expand: 108103c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(0 && "Cannot handle expand yet"); 108203c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 108303c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 10848b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SIGN_EXTEND: 10858b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::ZERO_EXTEND: 10868b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 10878b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: assert(0 && "BUG: Smaller reg should have been promoted!"); 10888b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 10898b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Input is legal? Just do extend all the way to the larger type. 10908b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 10918b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 10928b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 10948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Promote the reg if it's smaller. 10958b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = PromoteOp(Node->getOperand(0)); 10968b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The high bits are not guaranteed to be anything. Insert an extend. 10978b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (Node->getOpcode() == ISD::SIGN_EXTEND) 1098595dc5408ad809b9a9a417db275c43242e54b8dcChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Result, 1099595dc5408ad809b9a9a417db275c43242e54b8dcChris Lattner Node->getOperand(0).getValueType()); 11008b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner else 1101595dc5408ad809b9a9a417db275c43242e54b8dcChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Result, 1102595dc5408ad809b9a9a417db275c43242e54b8dcChris Lattner Node->getOperand(0).getValueType()); 11038b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11048b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 11058b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11068b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 11078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_EXTEND: 11088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "Case not implemented. Dynamically dead with 2 FP types!"); 11098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_ROUND: 11108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 11118b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: assert(0 && "BUG: Cannot expand FP regs!"); 11128b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: assert(0 && "Unreachable with 2 FP types!"); 11138b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 11148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Input is legal? Do an FP_ROUND_INREG. 11158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 11168b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 11178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 11198b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11208b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 11218b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SINT_TO_FP: 11228b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UINT_TO_FP: 11238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 11248b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 11258b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 112677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // No extra round required here. 112777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 11288b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11298b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 11308b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 11318b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = PromoteOp(Node->getOperand(0)); 11328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (Node->getOpcode() == ISD::SINT_TO_FP) 11338b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 11348b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result, Node->getOperand(0).getValueType()); 11358b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner else 11368b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND_INREG, Result.getValueType(), 11378b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result, Node->getOperand(0).getValueType()); 113877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // No extra round required here. 113977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 11408b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11418b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: 114277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, NVT, 114377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getOperand(0)); 114477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = LegalizeOp(Result); 114577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 114677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // Round if we cannot tolerate excess precision. 114777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (NoExcessFPPrecision) 114877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 114977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner break; 11508b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 11518b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11528b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 11538b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_TO_SINT: 11548b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_TO_UINT: 11558b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 11568b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 11578b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 11588b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11598b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 11608b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input result is prerounded, so we don't have to do anything 11618b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // special. 11628b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11638b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11648b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: 11658b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "not implemented"); 11668b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 11678b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 11688b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11698b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 117003c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::AND: 117103c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::OR: 117203c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::XOR: 11730f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::ADD: 11748b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SUB: 11750f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::MUL: 11760f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // The input may have strange things in the top bits of the registers, but 11770f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // these operations don't care. They may have wierd bits going out, but 11780f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // that too is okay if they are integer operations. 11790f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11800f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 11810f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner assert(Tmp1.getValueType() == NVT && Tmp2.getValueType() == NVT); 11820f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 11830f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 11840f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // However, if this is a floating point operation, they will give excess 11850f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // precision that we may not be able to tolerate. If we DO allow excess 11860f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // precision, just leave it, otherwise excise it. 11878b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // FIXME: Why would we need to round FP ops more than integer ones? 11888b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Is Round(Add(Add(A,B),C)) != Round(Add(Round(Add(A,B)), C)) 11890f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (MVT::isFloatingPoint(NVT) && NoExcessFPPrecision) 11900f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 11910f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 11920f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 11938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SDIV: 11948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SREM: 11958b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // These operators require that their input be sign extended. 11968b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11978b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 11988b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isInteger(NVT)) { 11998b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 1200ff3e50cc39db6939b637165997283f59412387bbChris Lattner Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2, VT); 12018b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 12028b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 12038b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 12048b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Perform FP_ROUND: this is probably overly pessimistic. 12058b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isFloatingPoint(NVT) && NoExcessFPPrecision) 12068b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 12078b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 12088b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 12098b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UDIV: 12108b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UREM: 12118b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // These operators require that their input be zero extended. 12128b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 12138b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 12148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(MVT::isInteger(NVT) && "Operators don't apply to FP!"); 12158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp1, VT); 1216ff3e50cc39db6939b637165997283f59412387bbChris Lattner Tmp2 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp2, VT); 12178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 12188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 12198b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 12208b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SHL: 12218b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 12228b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 12238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SHL, NVT, Tmp1, Tmp2); 12248b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 12258b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SRA: 12268b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input value must be properly sign extended. 12278b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 12288b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 12298b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 12308b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SRA, NVT, Tmp1, Tmp2); 12318b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 12328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SRL: 12338b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input value must be properly zero extended. 12348b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 12358b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp1, VT); 12368b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 12378b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SRL, NVT, Tmp1, Tmp2); 12388b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 123903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::LOAD: 124003c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 124103c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 124203c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::EXTLOAD, NVT, Tmp1, Tmp2, VT); 124303c8546ec57523970874917854a2fb77b1ff598eChris Lattner 124403c8546ec57523970874917854a2fb77b1ff598eChris Lattner // Remember that we legalized the chain. 124503c8546ec57523970874917854a2fb77b1ff598eChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 124603c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 124703c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SELECT: 124847e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 124947e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 125047e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 125147e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0));// Legalize the condition. 125247e9223e06390897c3834f8c527001df392570ffChris Lattner break; 125347e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 125447e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // Promote the condition. 125547e9223e06390897c3834f8c527001df392570ffChris Lattner break; 125647e9223e06390897c3834f8c527001df392570ffChris Lattner } 125703c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Legalize the op0 125803c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp3 = PromoteOp(Node->getOperand(2)); // Legalize the op1 125903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::SELECT, NVT, Tmp1, Tmp2, Tmp3); 126003c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 12618ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner case ISD::CALL: { 12628ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 12638ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 12648ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner 12653d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 12663d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) 12673d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 12683d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 12698ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner assert(Node->getNumValues() == 2 && Op.ResNo == 0 && 12708ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner "Can only promote single result calls"); 12718ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner std::vector<MVT::ValueType> RetTyVTs; 12728ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.reserve(2); 12738ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.push_back(NVT); 12748ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.push_back(MVT::Other); 12753d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner SDNode *NC = DAG.getCall(RetTyVTs, Tmp1, Tmp2, Ops); 12768ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Result = SDOperand(NC, 0); 12778ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner 12788ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner // Insert the new chain mapping. 12798ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 12808ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner break; 12818ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner } 128203c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 128303c8546ec57523970874917854a2fb77b1ff598eChris Lattner 128403c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(Result.Val && "Didn't set a result!"); 128503c8546ec57523970874917854a2fb77b1ff598eChris Lattner AddPromotedOperand(Op, Result); 128603c8546ec57523970874917854a2fb77b1ff598eChris Lattner return Result; 128703c8546ec57523970874917854a2fb77b1ff598eChris Lattner} 12883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 128984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner/// ExpandAddSub - Find a clever way to expand this add operation into 129084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner/// subcomponents. 129184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattnervoid SelectionDAGLegalize::ExpandAddSub(bool isAdd, SDOperand LHS,SDOperand RHS, 129284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner SDOperand &Lo, SDOperand &Hi) { 129384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner // Expand the subcomponents. 129484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner SDOperand LHSL, LHSH, RHSL, RHSH; 129584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandOp(LHS, LHSL, LHSH); 129684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandOp(RHS, RHSL, RHSH); 129784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner 129884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner // Convert this add to the appropriate ADDC pair. The low part has no carry 129984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner // in. 130084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner unsigned Opc = isAdd ? ISD::ADD_PARTS : ISD::SUB_PARTS; 130184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner std::vector<SDOperand> Ops; 130284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LHSL); 130384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LHSH); 130484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(RHSL); 130584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(RHSH); 130684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Lo = DAG.getNode(Opc, LHSL.getValueType(), Ops); 130784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Hi = Lo.getValue(1); 130884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner} 130984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner 1310e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// ExpandShift - Try to find a clever way to expand this shift operation out to 1311e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// smaller elements. If we can't find a way that is more efficient than a 1312e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// libcall on this target, return false. Otherwise, return true with the 1313e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// low-parts expanded into Lo and Hi. 1314e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattnerbool SelectionDAGLegalize::ExpandShift(unsigned Opc, SDOperand Op,SDOperand Amt, 1315e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand &Lo, SDOperand &Hi) { 1316e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner assert((Opc == ISD::SHL || Opc == ISD::SRA || Opc == ISD::SRL) && 1317e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner "This is not a shift!"); 1318e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(Op.getValueType()); 1319e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1320e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we have an efficient select operation (or if the selects will all fold 1321e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // away), lower to some complex code, otherwise just emit the libcall. 1322e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (TLI.getOperationAction(ISD::SELECT, NVT) != TargetLowering::Legal && 1323e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner !isa<ConstantSDNode>(Amt)) 1324e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner return false; 1325e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1326e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand InL, InH; 1327e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner ExpandOp(Op, InL, InH); 1328e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand ShAmt = LegalizeOp(Amt); 1329e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner MVT::ValueType ShTy = ShAmt.getValueType(); 1330e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1331e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner unsigned NVTBits = MVT::getSizeInBits(NVT); 1332e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand NAmt = DAG.getNode(ISD::SUB, ShTy, // NAmt = 32-ShAmt 1333e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits, ShTy), ShAmt); 1334e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1335e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner // Compare the unmasked shift amount against 32. 1336e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand Cond = DAG.getSetCC(ISD::SETGE, TLI.getSetCCResultTy(), ShAmt, 1337e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner DAG.getConstant(NVTBits, ShTy)); 1338e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner 1339e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (TLI.getShiftAmountFlavor() != TargetLowering::Mask) { 1340e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner ShAmt = DAG.getNode(ISD::AND, ShTy, ShAmt, // ShAmt &= 31 1341e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1342e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner NAmt = DAG.getNode(ISD::AND, ShTy, NAmt, // NAmt &= 31 1343e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1344e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } 1345e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1346e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (Opc == ISD::SHL) { 1347e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand T1 = DAG.getNode(ISD::OR, NVT,// T1 = (Hi << Amt) | (Lo >> NAmt) 1348e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SHL, NVT, InH, ShAmt), 1349e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SRL, NVT, InL, NAmt)); 1350e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand T2 = DAG.getNode(ISD::SHL, NVT, InL, ShAmt); // T2 = Lo << Amt&31 1351e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1352e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, Cond, T2, T1); 1353e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, Cond, DAG.getConstant(0, NVT), T2); 1354e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } else { 135577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand HiLoPart = DAG.getNode(ISD::SELECT, NVT, 135677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getSetCC(ISD::SETEQ, 135777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TLI.getSetCCResultTy(), NAmt, 135877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(32, ShTy)), 135977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(0, NVT), 136077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getNode(ISD::SHL, NVT, InH, NAmt)); 1361e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand T1 = DAG.getNode(ISD::OR, NVT,// T1 = (Hi << NAmt) | (Lo >> Amt) 136277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner HiLoPart, 1363e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SRL, NVT, InL, ShAmt)); 1364e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand T2 = DAG.getNode(Opc, NVT, InH, ShAmt); // T2 = InH >> ShAmt&31 1365e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1366e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand HiPart; 136777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (Opc == ISD::SRA) 136877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner HiPart = DAG.getNode(ISD::SRA, NVT, InH, 136977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1370e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner else 1371e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner HiPart = DAG.getConstant(0, NVT); 1372e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, Cond, T2, T1); 1373e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, Cond, HiPart, T2); 1374e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } 1375e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner return true; 1376e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner} 137777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 13789c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// FindLatestAdjCallStackDown - Scan up the dag to find the latest (highest 13799c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// NodeDepth) node that is an AdjCallStackDown operation and occurs later than 13809c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// Found. 13819c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnerstatic void FindLatestAdjCallStackDown(SDNode *Node, SDNode *&Found) { 13829c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->getNodeDepth() <= Found->getNodeDepth()) return; 13839c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 13849c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // If we found an ADJCALLSTACKDOWN, we already know this node occurs later 13859c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // than the Found node. Just remember this node and return. 13869c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->getOpcode() == ISD::ADJCALLSTACKDOWN) { 13879c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found = Node; 13889c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return; 13899c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 13909c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 13919c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Otherwise, scan the operands of Node to see if any of them is a call. 13929c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(Node->getNumOperands() != 0 && 13939c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner "All leaves should have depth equal to the entry node!"); 13949c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (unsigned i = 0, e = Node->getNumOperands()-1; i != e; ++i) 13959c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner FindLatestAdjCallStackDown(Node->getOperand(i).Val, Found); 13969c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 13979c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Tail recurse for the last iteration. 13989c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner FindLatestAdjCallStackDown(Node->getOperand(Node->getNumOperands()-1).Val, 13999c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found); 14009c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 14019c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14029c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14039c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// FindEarliestAdjCallStackUp - Scan down the dag to find the earliest (lowest 14049c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// NodeDepth) node that is an AdjCallStackUp operation and occurs more recent 14059c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// than Found. 14069c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnerstatic void FindEarliestAdjCallStackUp(SDNode *Node, SDNode *&Found) { 14079c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Found && Node->getNodeDepth() >= Found->getNodeDepth()) return; 14089c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14099c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // If we found an ADJCALLSTACKUP, we already know this node occurs earlier 14109c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // than the Found node. Just remember this node and return. 14119c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->getOpcode() == ISD::ADJCALLSTACKUP) { 14129c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner Found = Node; 14139c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return; 14149c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 14159c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14169c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Otherwise, scan the operands of Node to see if any of them is a call. 14179c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode::use_iterator UI = Node->use_begin(), E = Node->use_end(); 14189c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (UI == E) return; 14199c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (--E; UI != E; ++UI) 14209c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner FindEarliestAdjCallStackUp(*UI, Found); 14219c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14229c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Tail recurse for the last iteration. 14239c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner FindEarliestAdjCallStackUp(*UI, Found); 14249c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 14259c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14269c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// FindAdjCallStackUp - Given a chained node that is part of a call sequence, 14279c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// find the ADJCALLSTACKUP node that terminates the call sequence. 14289c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnerstatic SDNode *FindAdjCallStackUp(SDNode *Node) { 14299c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->getOpcode() == ISD::ADJCALLSTACKUP) 14309c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return Node; 14319c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(!Node->use_empty() && "Could not find ADJCALLSTACKUP!"); 14329c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14339c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (Node->hasOneUse()) // Simple case, only has one user to check. 14349c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return FindAdjCallStackUp(*Node->use_begin()); 14359c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14369c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand TheChain(Node, Node->getNumValues()-1); 14379c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(TheChain.getValueType() == MVT::Other && "Is not a token chain!"); 14389c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14399c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 14409c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner E = Node->use_end(); ; ++UI) { 14419c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(UI != E && "Didn't find a user of the tokchain, no ADJCALLSTACKUP!"); 14429c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14439c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // Make sure to only follow users of our token chain. 14449c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *User = *UI; 14459c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 14469c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (User->getOperand(i) == TheChain) 14479c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return FindAdjCallStackUp(User); 14489c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 14499c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner assert(0 && "Unreachable"); 14509c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner abort(); 14519c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 14529c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14539c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// FindInputOutputChains - If we are replacing an operation with a call we need 14549c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// to find the call that occurs before and the call that occurs after it to 14559c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner/// properly serialize the calls in the block. 14569c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnerstatic SDOperand FindInputOutputChains(SDNode *OpNode, SDNode *&OutChain, 14579c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand Entry) { 14589c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *LatestAdjCallStackDown = Entry.Val; 14599c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner FindLatestAdjCallStackDown(OpNode, LatestAdjCallStackDown); 14609c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner //std::cerr << "Found node: "; LatestAdjCallStackDown->dump(); std::cerr <<"\n"; 14619c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14629c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *LatestAdjCallStackUp = FindAdjCallStackUp(LatestAdjCallStackDown); 14639c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14649c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14659c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *EarliestAdjCallStackUp = 0; 14669c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner FindEarliestAdjCallStackUp(OpNode, EarliestAdjCallStackUp); 14679c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14689c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner if (EarliestAdjCallStackUp) { 14699c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner //std::cerr << "Found node: "; 14709c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner //EarliestAdjCallStackUp->dump(); std::cerr <<"\n"; 14719c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner } 14729c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14739c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner return SDOperand(LatestAdjCallStackUp, 0); 14749c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner} 14759c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14769c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 14779c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 147877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 147977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 148077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 148177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 148277e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerSDOperand SelectionDAGLegalize::ExpandLibCall(const char *Name, SDNode *Node, 148377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand &Hi) { 14849c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *OutChain; 14859c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand InChain = FindInputOutputChains(Node, OutChain, 14869c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner DAG.getEntryNode()); 14879c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner // TODO. Link in chains. 14889c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 148977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 149077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 149177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner MVT::ValueType ArgVT = Node->getOperand(i).getValueType(); 149277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *ArgTy = MVT::getTypeForValueType(ArgVT); 149377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args.push_back(std::make_pair(Node->getOperand(i), ArgTy)); 149477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 149577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Callee = DAG.getExternalSymbol(Name, TLI.getPointerTy()); 149677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 149777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // We don't care about token chains for libcalls. We just use the entry 149877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // node as our input and ignore the output chain. This allows us to place 149977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // calls wherever we need them to satisfy data dependences. 150077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *RetTy = MVT::getTypeForValueType(Node->getValueType(0)); 15018e21e71b248365c69c0f666518c378b5819ce6fbNate Begeman SDOperand Result = TLI.LowerCallTo(InChain, RetTy, false, Callee, 150277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args, DAG).first; 150377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner switch (getTypeAction(Result.getValueType())) { 150477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner default: assert(0 && "Unknown thing"); 150577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Legal: 150677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner return Result; 150777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Promote: 150877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(0 && "Cannot promote this yet!"); 150977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Expand: 151077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Lo; 151177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner ExpandOp(Result, Lo, Hi); 151277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner return Lo; 151377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 151477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 151577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 15169c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 151777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner/// ExpandIntToFP - Expand a [US]INT_TO_FP operation, assuming that the 151877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner/// destination type is legal. 151977e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerSDOperand SelectionDAGLegalize:: 152077e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerExpandIntToFP(bool isSigned, MVT::ValueType DestTy, SDOperand Source) { 152177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(getTypeAction(DestTy) == Legal && "Destination type is not legal!"); 152277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(getTypeAction(Source.getValueType()) == Expand && 152377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner "This is not an expansion!"); 152477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(Source.getValueType() == MVT::i64 && "Only handle expand from i64!"); 152577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 15269c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDNode *OutChain; 15279c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SDOperand InChain = FindInputOutputChains(Source.Val, OutChain, 15289c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner DAG.getEntryNode()); 15299c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 1530fed5577066aa13948745415316ebad1c2e72507eChris Lattner const char *FnName = 0; 153177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (isSigned) { 153277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (DestTy == MVT::f32) 153377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner FnName = "__floatdisf"; 153477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner else { 153577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(DestTy == MVT::f64 && "Unknown fp value type!"); 153677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner FnName = "__floatdidf"; 153777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 153877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } else { 153977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // If this is unsigned, and not supported, first perform the conversion to 154077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // signed, then adjust the result if the sign bit is set. 154177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand SignedConv = ExpandIntToFP(false, DestTy, Source); 154277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 154377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(0 && "Unsigned casts not supported yet!"); 154477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 154577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Callee = DAG.getExternalSymbol(FnName, TLI.getPointerTy()); 154677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 154777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 154877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *ArgTy = MVT::getTypeForValueType(Source.getValueType()); 154977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args.push_back(std::make_pair(Source, ArgTy)); 155077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 155177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // We don't care about token chains for libcalls. We just use the entry 155277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // node as our input and ignore the output chain. This allows us to place 155377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // calls wherever we need them to satisfy data dependences. 155477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *RetTy = MVT::getTypeForValueType(DestTy); 15558e21e71b248365c69c0f666518c378b5819ce6fbNate Begeman return TLI.LowerCallTo(InChain, RetTy, false, Callee, Args, DAG).first; 15569c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 155777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 155877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 1559e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1560e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 15613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// ExpandOp - Expand the specified SDOperand into its two component pieces 15623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// Lo&Hi. Note that the Op MUST be an expanded type. As a result of this, the 15633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// LegalizeNodes map is filled in for any results that are not expanded, the 15643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// ExpandedNodes map is filled in for any results that are expanded, and the 15653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// Lo/Hi values are returned. 15663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ 15673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MVT::ValueType VT = Op.getValueType(); 156871c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 15693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDNode *Node = Op.Val; 15703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(getTypeAction(VT) == Expand && "Not an expanded type!"); 15713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::isInteger(VT) && "Cannot expand FP values!"); 15723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::isInteger(NVT) && NVT < VT && 15733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Cannot expand to FP value or to larger int value!"); 15743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If there is more than one use of this, see if we already expanded it. 15763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // There is no use remembering values that only have a single use, as the map 15773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // entries will never be reused. 15783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!Node->hasOneUse()) { 15793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::map<SDOperand, std::pair<SDOperand, SDOperand> >::iterator I 15803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner = ExpandedNodes.find(Op); 15813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (I != ExpandedNodes.end()) { 15823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = I->second.first; 15833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = I->second.second; 15843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return; 15853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15884e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // Expanding to multiple registers needs to perform an optimization step, and 15894e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // is not careful to avoid operations the target does not support. Make sure 15904e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // that all generated operations are legalized in the next iteration. 15914e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner NeedsAnotherIteration = true; 15923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 15943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 15953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 15963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(0 && "Do not know how to expand this operator!"); 15973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner abort(); 1598fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman case ISD::UNDEF: 1599fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Lo = DAG.getNode(ISD::UNDEF, NVT); 1600fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman Hi = DAG.getNode(ISD::UNDEF, NVT); 1601fc1b1dad88a256ab5ab16dd548ad82df8efa2ca9Nate Begeman break; 16023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::Constant: { 16033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner uint64_t Cst = cast<ConstantSDNode>(Node)->getValue(); 16043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getConstant(Cst, NVT); 16053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getConstant(Cst >> MVT::getSizeInBits(NVT), NVT); 16063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 16073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 16083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 16093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CopyFromReg: { 161018c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner unsigned Reg = cast<RegSDNode>(Node)->getReg(); 16113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Aggregate register values are always in consequtive pairs. 161269a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Lo = DAG.getCopyFromReg(Reg, NVT, Node->getOperand(0)); 161369a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Hi = DAG.getCopyFromReg(Reg+1, NVT, Lo.getValue(1)); 161469a52155d2eff066b49dbac385113002fd9dba14Chris Lattner 161569a52155d2eff066b49dbac385113002fd9dba14Chris Lattner // Remember that we legalized the chain. 161669a52155d2eff066b49dbac385113002fd9dba14Chris Lattner AddLegalizedOperand(Op.getValue(1), Hi.getValue(1)); 161769a52155d2eff066b49dbac385113002fd9dba14Chris Lattner 16183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(NVT) && "Cannot expand this multiple times yet!"); 16193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 16203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 16213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1622d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner case ISD::BUILD_PAIR: 1623d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner // Legalize both operands. FIXME: in the future we should handle the case 1624d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner // where the two elements are not legal. 1625d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner assert(isTypeLegal(NVT) && "Cannot expand this multiple times yet!"); 1626d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner Lo = LegalizeOp(Node->getOperand(0)); 1627d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner Hi = LegalizeOp(Node->getOperand(1)); 1628d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner break; 1629d4e50bb2e23b8f9ddde629a28dab3bcdaf0633e4Chris Lattner 16303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::LOAD: { 16313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Ch = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 16323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Ptr = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 16333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getLoad(NVT, Ch, Ptr); 16343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 16353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Increment the pointer to the other half. 163638d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner unsigned IncrementSize = MVT::getSizeInBits(Lo.getValueType())/8; 16373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 16383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner getIntPtrConstant(IncrementSize)); 1639ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi = DAG.getLoad(NVT, Ch, Ptr); 1640ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner 1641ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // Build a factor node to remember that this load is independent of the 1642ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // other one. 1643ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner SDOperand TF = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 1644ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi.getValue(1)); 16453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 16463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remember that we legalized the chain. 1647ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner AddLegalizedOperand(Op.getValue(1), TF); 16483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!TLI.isLittleEndian()) 16493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::swap(Lo, Hi); 16503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 16513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 16523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CALL: { 16533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Chain = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 16543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Callee = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 16553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 16563d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner bool Changed = false; 16573d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 16583d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) { 16593d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 16603d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 16613d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 16623d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 16633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(Node->getNumValues() == 2 && Op.ResNo == 0 && 16643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Can only expand a call once so far, not i64 -> i16!"); 16653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 16663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<MVT::ValueType> RetTyVTs; 16673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.reserve(3); 16683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(NVT); 16693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(NVT); 16703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(MVT::Other); 16713d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner SDNode *NC = DAG.getCall(RetTyVTs, Chain, Callee, Ops); 16723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = SDOperand(NC, 0); 16733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = SDOperand(NC, 1); 16743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 16753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Insert the new chain mapping. 1676e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner AddLegalizedOperand(Op.getValue(1), Hi.getValue(2)); 16773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 16783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 16793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::AND: 16803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::OR: 16813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::XOR: { // Simple logical operators -> two trivial pieces. 16823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LL, LH, RL, RH; 16833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), LL, LH); 16843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), RL, RH); 16853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(Node->getOpcode(), NVT, LL, RL); 16863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getNode(Node->getOpcode(), NVT, LH, RH); 16873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 16883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 16893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SELECT: { 16903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand C, LL, LH, RL, RH; 169147e9223e06390897c3834f8c527001df392570ffChris Lattner 169247e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 169347e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 169447e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 169547e9223e06390897c3834f8c527001df392570ffChris Lattner C = LegalizeOp(Node->getOperand(0)); // Legalize the condition. 169647e9223e06390897c3834f8c527001df392570ffChris Lattner break; 169747e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 169847e9223e06390897c3834f8c527001df392570ffChris Lattner C = PromoteOp(Node->getOperand(0)); // Promote the condition. 169947e9223e06390897c3834f8c527001df392570ffChris Lattner break; 170047e9223e06390897c3834f8c527001df392570ffChris Lattner } 17013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), LL, LH); 17023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(2), RL, RH); 17033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, C, LL, RL); 17043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, C, LH, RH); 17053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 17063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 17073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SIGN_EXTEND: { 17083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The low part is just a sign extension of the input (which degenerates to 17093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // a copy). 17103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(ISD::SIGN_EXTEND, NVT, LegalizeOp(Node->getOperand(0))); 17113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 17123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The high part is obtained by SRA'ing all but one of the bits of the lo 17133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // part. 17142dad454af674cb41a14a85ad6ce5c85c43959acdChris Lattner unsigned LoSize = MVT::getSizeInBits(Lo.getValueType()); 171527ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner Hi = DAG.getNode(ISD::SRA, NVT, Lo, DAG.getConstant(LoSize-1, 171627ff112948d059524e5f4ebe249a1da0b7c710e8Chris Lattner TLI.getShiftAmountTy())); 17173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 17183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 17193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ZERO_EXTEND: 17203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The low part is just a zero extension of the input (which degenerates to 17213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // a copy). 17223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, LegalizeOp(Node->getOperand(0))); 17233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 17243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The high part is just a zero. 17253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getConstant(0, NVT); 17263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 17274e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner 17284e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // These operators cannot be expanded directly, emit them as calls to 17294e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // library functions. 17304e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner case ISD::FP_TO_SINT: 17314e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner if (Node->getOperand(0).getValueType() == MVT::f32) 173277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixsfdi", Node, Hi); 17334e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner else 173477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixdfdi", Node, Hi); 17354e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner break; 17364e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner case ISD::FP_TO_UINT: 17374e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner if (Node->getOperand(0).getValueType() == MVT::f32) 173877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixunssfdi", Node, Hi); 17394e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner else 174077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixunsdfdi", Node, Hi); 17414e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner break; 17424e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner 1743e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SHL: 1744e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 174577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SHL, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 1746e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1747e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 174877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__ashldi3", Node, Hi); 1749e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1750e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1751e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SRA: 1752e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 175377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SRA, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 1754e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1755e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 175677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__ashrdi3", Node, Hi); 1757e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1758e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SRL: 1759e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 176077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SRL, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 1761e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1762e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 176377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__lshrdi3", Node, Hi); 1764e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1765e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 176684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::ADD: 176784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandAddSub(true, Node->getOperand(0), Node->getOperand(1), Lo, Hi); 176884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 176984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::SUB: 177084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandAddSub(false, Node->getOperand(0), Node->getOperand(1), Lo, Hi); 177184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 177277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::MUL: Lo = ExpandLibCall("__muldi3" , Node, Hi); break; 177377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::SDIV: Lo = ExpandLibCall("__divdi3" , Node, Hi); break; 177477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::UDIV: Lo = ExpandLibCall("__udivdi3", Node, Hi); break; 177577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::SREM: Lo = ExpandLibCall("__moddi3" , Node, Hi); break; 177677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::UREM: Lo = ExpandLibCall("__umoddi3", Node, Hi); break; 17773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 17783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 17793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remember in a map if the values will be reused later. 17803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!Node->hasOneUse()) { 17813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isNew = ExpandedNodes.insert(std::make_pair(Op, 17823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::make_pair(Lo, Hi))).second; 17833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isNew && "Value already expanded?!?"); 17843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 17853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 17863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 17873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 17883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 17893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 17909c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattnervoid SelectionDAG::Legalize() { 17913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 17923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 17939c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner SelectionDAGLegalize(*this).Run(); 17943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 17953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1796