LegalizeDAG.cpp revision 77e77a6aa0ab25a812947aed477220dd11220a18
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 883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAGLegalize(TargetLowering &TLI, 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 1383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris LattnerSelectionDAGLegalize::SelectionDAGLegalize(TargetLowering &tli, 1393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &dag) 14071c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner : TLI(tli), DAG(dag), 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); 20969a52155d2eff066b49dbac385113002fd9dba14Chris Lattner break; 21018c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner case ISD::ImplicitDef: 21118c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 21218c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner if (Tmp1 != Node->getOperand(0)) 2132ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner Result = DAG.getImplicitDef(Tmp1, cast<RegSDNode>(Node)->getReg()); 21418c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner break; 2153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::Constant: 2163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // We know we don't need to expand constants here, constants only have one 2173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // value and we check that it is fine above. 2183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // FIXME: Maybe we should handle things like targets that don't support full 2203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // 32-bit immediates? 2213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 2223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ConstantFP: { 2233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Spill FP immediates to the constant pool if the target cannot directly 2243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // codegen them. Targets often have some immediate values that can be 2253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // efficiently generated into an FP register without a load. We explicitly 2263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // leave these constants as ConstantFP nodes for the target to deal with. 2273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Check to see if this FP immediate is already legal. 2313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isLegal = false; 2323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(), 2333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner E = TLI.legal_fpimm_end(); I != E; ++I) 2343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (CFP->isExactlyValue(*I)) { 2353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner isLegal = true; 2363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 2373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!isLegal) { 2403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Otherwise we need to spill the constant to memory. 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MachineConstantPool *CP = DAG.getMachineFunction().getConstantPool(); 2423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool Extend = false; 2443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If a FP immediate is precise when represented as a float, we put it 2463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // into the constant pool as a float, even if it's is statically typed 2473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // as a double. 2483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MVT::ValueType VT = CFP->getValueType(0); 2493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isDouble = VT == MVT::f64; 2503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ConstantFP *LLVMC = ConstantFP::get(isDouble ? Type::DoubleTy : 2513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Type::FloatTy, CFP->getValue()); 2523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (isDouble && CFP->isExactlyValue((float)CFP->getValue())) { 2533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LLVMC = cast<ConstantFP>(ConstantExpr::getCast(LLVMC, Type::FloatTy)); 2543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner VT = MVT::f32; 2553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Extend = true; 2563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand CPIdx = DAG.getConstantPool(CP->getConstantPoolIndex(LLVMC), 2593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TLI.getPointerTy()); 260f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner if (Extend) { 261f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::EXTLOAD, MVT::f64, DAG.getEntryNode(), CPIdx, 262f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner MVT::f32); 263f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner } else { 264f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getLoad(VT, DAG.getEntryNode(), CPIdx); 265f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner } 2663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 2673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 2683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 269a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner case ISD::TokenFactor: { 270a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner std::vector<SDOperand> Ops; 271a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner bool Changed = false; 272a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 2731e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner SDOperand Op = Node->getOperand(i); 2741e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner // Fold single-use TokenFactor nodes into this token factor as we go. 2751e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner if (Op.getOpcode() == ISD::TokenFactor && Op.hasOneUse()) { 2761e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Changed = true; 2771e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner for (unsigned j = 0, e = Op.getNumOperands(); j != e; ++j) 2781e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Ops.push_back(LegalizeOp(Op.getOperand(j))); 2791e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner } else { 2801e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Ops.push_back(LegalizeOp(Op)); // Legalize the operands 2811e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner Changed |= Ops[i] != Op; 2821e81b9e5112c40c23ecca9a64b6ab2ce97c8c6d4Chris Lattner } 283a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner } 284a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner if (Changed) 285a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Ops); 286a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner break; 287a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner } 288a385e9b20fa7d37d3842ce15afd412f617d83a27Chris Lattner 2893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ADJCALLSTACKDOWN: 2903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ADJCALLSTACKUP: 2913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 2923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // There is no need to legalize the size argument (Operand #1) 2933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 2943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Tmp1, 2953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Node->getOperand(1)); 2963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 297fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner case ISD::DYNAMIC_STACKALLOC: 298fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 299fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the size. 300fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the alignment. 301fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 302fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp3 != Node->getOperand(2)) 303fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Result = DAG.getNode(ISD::DYNAMIC_STACKALLOC, Node->getValueType(0), 304fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner Tmp1, Tmp2, Tmp3); 305513e52ec4e20048a8f491498d219a2669283f3bdChris Lattner else 306513e52ec4e20048a8f491498d219a2669283f3bdChris Lattner Result = Op.getValue(0); 307fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner 308fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner // Since this op produces two values, make sure to remember that we 309fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner // legalized both of them. 310fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 311fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 312fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner return Result.getValue(Op.ResNo); 313fa404e8a76abfdafefb8806b35f596d288609496Chris Lattner 3143d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner case ISD::CALL: { 3153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 3163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 3173d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 3183d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner bool Changed = false; 3193d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 3203d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) { 3213d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 3223d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 3233d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 3243d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 3253d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || Changed) { 3263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<MVT::ValueType> RetTyVTs; 3273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.reserve(Node->getNumValues()); 3283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 329ebda942efcb86634a6581aae76a0d0c92c4a232eChris Lattner RetTyVTs.push_back(Node->getValueType(i)); 3303d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Result = SDOperand(DAG.getCall(RetTyVTs, Tmp1, Tmp2, Ops), 0); 33138d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner } else { 33238d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner Result = Result.getValue(0); 3333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 33438d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner // Since calls produce multiple values, make sure to remember that we 33538d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner // legalized all of them. 33638d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 33738d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner AddLegalizedOperand(SDOperand(Node, i), Result.getValue(i)); 33838d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner return Result.getValue(Op.ResNo); 3393d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 340c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner case ISD::BR: 341c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 342c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner if (Tmp1 != Node->getOperand(0)) 343c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner Result = DAG.getNode(ISD::BR, MVT::Other, Tmp1, Node->getOperand(1)); 344c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner break; 345c7af17923e3bb6053f529679ef0be5399d3519edChris Lattner 346c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner case ISD::BRCOND: 347c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 34847e9223e06390897c3834f8c527001df392570ffChris Lattner 34947e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 35047e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 35147e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 35247e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the condition. 35347e9223e06390897c3834f8c527001df392570ffChris Lattner break; 35447e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 35547e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Promote the condition. 35647e9223e06390897c3834f8c527001df392570ffChris Lattner break; 35747e9223e06390897c3834f8c527001df392570ffChris Lattner } 358c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner // Basic block destination (Op#2) is always legal. 359c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 360c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Result = DAG.getNode(ISD::BRCOND, MVT::Other, Tmp1, Tmp2, 361c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner Node->getOperand(2)); 362c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner break; 363c18ae4cb6a263cf31283c0ef51ace24350f8d72bChris Lattner 3643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::LOAD: 3653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 3663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 3673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || 3683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(1)) 3693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getLoad(Node->getValueType(0), Tmp1, Tmp2); 3708afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner else 3718afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner Result = SDOperand(Node, 0); 3728afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 3738afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner // Since loads produce two values, make sure to remember that we legalized 3748afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner // both of them. 3758afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 3768afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 3778afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner return Result.getValue(Op.ResNo); 3783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3790f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::EXTLOAD: 3800f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::SEXTLOAD: 3810f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::ZEXTLOAD: 3820f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 3830f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 3840f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (Tmp1 != Node->getOperand(0) || 3850f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 != Node->getOperand(1)) 3860f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, Tmp2, 3870f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner cast<MVTSDNode>(Node)->getExtraValueType()); 3880f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner else 3890f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = SDOperand(Node, 0); 3900f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 3910f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // Since loads produce two values, make sure to remember that we legalized 3920f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // both of them. 3930f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner AddLegalizedOperand(SDOperand(Node, 0), Result); 3940f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); 3950f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner return Result.getValue(Op.ResNo); 3960f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 3973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::EXTRACT_ELEMENT: 3983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Get both the low and high parts. 3993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 4003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (cast<ConstantSDNode>(Node->getOperand(1))->getValue()) 4013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = Tmp2; // 1 -> Hi 4023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner else 4033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = Tmp1; // 0 -> Lo 4043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CopyToReg: 4073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 4103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 4113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Legalize the incoming value (must be legal). 4123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 4133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 41418c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner Result = DAG.getCopyToReg(Tmp1, Tmp2, cast<RegSDNode>(Node)->getReg()); 4153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 416ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case Promote: 417ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 418ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Result = DAG.getCopyToReg(Tmp1, Tmp2, cast<RegSDNode>(Node)->getReg()); 419ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner break; 420ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case Expand: 4213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 4223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 42318c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner unsigned Reg = cast<RegSDNode>(Node)->getReg(); 424ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Lo = DAG.getCopyToReg(Tmp1, Lo, Reg); 425ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi = DAG.getCopyToReg(Tmp1, Hi, Reg+1); 426ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // Note that the copytoreg nodes are independent of each other. 427ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 4283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(Result.getValueType()) && 4293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Cannot expand multiple times yet (i64 -> i16)"); 4303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::RET: 4353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getNumOperands()) { 4373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case 2: // ret val 4383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 4393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 4403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 4418afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 4423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Tmp2); 4433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 4453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 4463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 4473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Lo, Hi); 4483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 4518b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 4528b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Tmp2); 4538b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 4543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case 1: // ret void 4573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 4583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1); 4593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: { // ret <values> 4613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<SDOperand> NewValues; 4623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Tmp1); 4633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) 4643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(i).getValueType())) { 4653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 4664e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner NewValues.push_back(LegalizeOp(Node->getOperand(i))); 4673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: { 4693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 4703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(i), Lo, Hi); 4713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Lo); 4723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner NewValues.push_back(Hi); 4733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 4768b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "Can't promote multiple return value yet!"); 4773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::RET, MVT::Other, NewValues); 4793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 4823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 4833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::STORE: 4843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 4853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. 4863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 4875d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 48803c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (ConstantFPSDNode *CFP =dyn_cast<ConstantFPSDNode>(Node->getOperand(1))){ 4895d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner if (CFP->getValueType(0) == MVT::f32) { 4905d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner union { 4915d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner unsigned I; 4925d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner float F; 4935d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } V; 4945d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner V.F = CFP->getValue(); 4955d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, 4965d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner DAG.getConstant(V.I, MVT::i32), Tmp2); 4975d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } else { 4985d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner assert(CFP->getValueType(0) == MVT::f64 && "Unknown FP type!"); 4995d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner union { 5005d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner uint64_t I; 5015d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner double F; 5025d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } V; 5035d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner V.F = CFP->getValue(); 5045d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, 5055d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner DAG.getConstant(V.I, MVT::i64), Tmp2); 5065d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } 5075d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner Op = Result; 5085d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner Node = Op.Val; 5095d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner } 5105d2c6c784bdc3d572a553ed7aa48dcf27a45b1a3Chris Lattner 5113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 5123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: { 5133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Val = LegalizeOp(Node->getOperand(1)); 5143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Val != Node->getOperand(1) || Tmp1 != Node->getOperand(0) || 5153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(2)) 5163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Val, Tmp2); 5173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 52003c8546ec57523970874917854a2fb77b1ff598eChris Lattner // Truncate the value and store the result. 52103c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp3 = PromoteOp(Node->getOperand(1)); 52203c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Tmp1, Tmp3, Tmp2, 52303c8546ec57523970874917854a2fb77b1ff598eChris Lattner Node->getOperand(1).getValueType()); 52403c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 52503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 5263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: 5273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Lo, Hi; 5283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), Lo, Hi); 5293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 5303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!TLI.isLittleEndian()) 5313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::swap(Lo, Hi); 5323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 533ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Lo = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Lo, Tmp2); 5343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 535ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner unsigned IncrementSize = MVT::getSizeInBits(Hi.getValueType())/8; 5363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getNode(ISD::ADD, Tmp2.getValueType(), Tmp2, 5373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner getIntPtrConstant(IncrementSize)); 5383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(Tmp2.getValueType()) && 5393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Pointers must be legal!"); 540ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi = DAG.getNode(ISD::STORE, MVT::Other, Tmp1, Hi, Tmp2); 541ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Result = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo, Hi); 542ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner break; 5433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 5443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 5450f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::TRUNCSTORE: 5460f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 5470f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the pointer. 5480f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 5490f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner switch (getTypeAction(Node->getOperand(1).getValueType())) { 5500f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Legal: 5510f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 5520f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 5530f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp3 != Node->getOperand(2)) 55445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Tmp1, Tmp2, Tmp3, 5550f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner cast<MVTSDNode>(Node)->getExtraValueType()); 5560f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 5570f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Promote: 5580f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case Expand: 5590f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner assert(0 && "Cannot handle illegal TRUNCSTORE yet!"); 5600f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner } 5610f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 5622ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner case ISD::SELECT: 56347e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 56447e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 56547e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 56647e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the condition. 56747e9223e06390897c3834f8c527001df392570ffChris Lattner break; 56847e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 56947e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // Promote the condition. 57047e9223e06390897c3834f8c527001df392570ffChris Lattner break; 57147e9223e06390897c3834f8c527001df392570ffChris Lattner } 5723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // TrueVal 5732ee743ff9be43c350075a2fa15d11a79bff36775Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); // FalseVal 57455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner 57555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), Tmp2.getValueType())) { 57655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action is not supported yet!"); 57755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 57855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 57955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp3 != Node->getOperand(2)) 58055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(ISD::SELECT, Node->getValueType(0), 58155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp1, Tmp2, Tmp3); 58255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 58355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Promote: { 58455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner MVT::ValueType NVT = 58555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TLI.getTypeToPromoteTo(ISD::SELECT, Tmp2.getValueType()); 58655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner unsigned ExtOp, TruncOp; 58755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (MVT::isInteger(Tmp2.getValueType())) { 58855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtOp = ISD::ZERO_EXTEND; 58955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TruncOp = ISD::TRUNCATE; 59055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } else { 59155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtOp = ISD::FP_EXTEND; 59255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner TruncOp = ISD::FP_ROUND; 59355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 59455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner // Promote each of the values to the new type. 59555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp2 = DAG.getNode(ExtOp, NVT, Tmp2); 59655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Tmp3 = DAG.getNode(ExtOp, NVT, Tmp3); 59755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner // Perform the larger operation, then round down. 59855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(ISD::SELECT, NVT, Tmp1, Tmp2,Tmp3); 59955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(TruncOp, Node->getValueType(0), Result); 60055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 60155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 60255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 6033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETCC: 6053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 6063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 6073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 6083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 6093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) 6103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 611f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, Tmp2); 6123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Promote: 6148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // LHS 6158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // RHS 6168b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 6178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // If this is an FP compare, the operands have already been extended. 6188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isInteger(Node->getOperand(0).getValueType())) { 6198b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner MVT::ValueType VT = Node->getOperand(0).getValueType(); 62071c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 6218b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 6228b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Otherwise, we have to insert explicit sign or zero extends. Note 6238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // that we could insert sign extends for ALL conditions, but zero extend 6248b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // is cheaper on many machines (an AND instead of two shifts), so prefer 6258b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // it. 6268b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 6278b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner default: assert(0 && "Unknown integer comparison!"); 6288b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETEQ: 6298b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETNE: 6308b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETUGE: 6318b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETUGT: 6328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETULE: 6338b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETULT: 6348b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // ALL of these operations will work if we either sign or zero extend 6358b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // the operands (including the unsigned comparisons!). Zero extend is 6368b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // usually a simpler/cheaper operation, so prefer it. 6378b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp1, VT); 6388b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp2, VT); 6398b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 6408b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETGE: 6418b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETGT: 6428b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETLT: 6438b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SETLE: 6448b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 6458b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2, VT); 6468b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 6478b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 6488b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 6498b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 6508b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 651f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, Tmp2); 6523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Expand: 6543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LHSLo, LHSHi, RHSLo, RHSHi; 6553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), LHSLo, LHSHi); 6563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), RHSLo, RHSHi); 6573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 6583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETEQ: 6593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETNE: 6603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSLo, RHSLo); 6613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getNode(ISD::XOR, LHSLo.getValueType(), LHSHi, RHSHi); 6623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = DAG.getNode(ISD::OR, Tmp1.getValueType(), Tmp1, Tmp2); 663f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 664f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), Tmp1, 6653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner DAG.getConstant(0, Tmp1.getValueType())); 6663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 6683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // FIXME: This generated code sucks. 6693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ISD::CondCode LowCC; 6703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (cast<SetCCSDNode>(Node)->getCondition()) { 6713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: assert(0 && "Unknown integer setcc!"); 6723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETLT: 6733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETULT: LowCC = ISD::SETULT; break; 6743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETGT: 6753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETUGT: LowCC = ISD::SETUGT; break; 6763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETLE: 6773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETULE: LowCC = ISD::SETULE; break; 6783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETGE: 6793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SETUGE: LowCC = ISD::SETUGE; break; 6803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 6823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Tmp1 = lo(op1) < lo(op2) // Always unsigned comparison 6833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Tmp2 = hi(op1) < hi(op2) // Signedness depends on operands 6843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // dest = hi(op1) == hi(op2) ? Tmp1 : Tmp2; 6853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 6863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // NOTE: on targets without efficient SELECT of bools, we can always use 6873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3) 688f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Tmp1 = DAG.getSetCC(LowCC, Node->getValueType(0), LHSLo, RHSLo); 6893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 690f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Node->getValueType(0), LHSHi, RHSHi); 691f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getSetCC(ISD::SETEQ, Node->getValueType(0), LHSHi, RHSHi); 692f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result = DAG.getNode(ISD::SELECT, Tmp1.getValueType(), 693f30b73b1c6b6ca8453dc61eb3777b4e4414d3839Chris Lattner Result, Tmp1, Tmp2); 6943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 6973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 6983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 699e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMSET: 700e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMCPY: 701e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner case ISD::MEMMOVE: { 702e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 703e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 704e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 = LegalizeOp(Node->getOperand(2)); 705e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner SDOperand Tmp4 = LegalizeOp(Node->getOperand(3)); 706e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner SDOperand Tmp5 = LegalizeOp(Node->getOperand(4)); 70755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner 70855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), MVT::Other)) { 70955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action not implemented for this operation!"); 71055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 711e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || 712e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 != Node->getOperand(2) || Tmp4 != Node->getOperand(3) || 713e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp5 != Node->getOperand(4)) { 714e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::vector<SDOperand> Ops; 715e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 716e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Ops.push_back(Tmp4); Ops.push_back(Tmp5); 717e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Ops); 718e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 71955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 72055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Expand: { 721e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // Otherwise, the target does not support this operation. Lower the 722e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // operation to an explicit libcall as appropriate. 723e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner MVT::ValueType IntPtr = TLI.getPointerTy(); 724e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner const Type *IntPtrTy = TLI.getTargetData().getIntPtrType(); 725e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::vector<std::pair<SDOperand, const Type*> > Args; 726e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner 7273bfbf4ea990930d153e58e153f319408341a94feReid Spencer const char *FnName = 0; 728e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (Node->getOpcode() == ISD::MEMSET) { 729e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp2, IntPtrTy)); 730e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner // Extend the ubyte argument to be an int value for the call. 731e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Tmp3 = DAG.getNode(ISD::ZERO_EXTEND, MVT::i32, Tmp3); 732e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp3, Type::IntTy)); 733e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp4, IntPtrTy)); 734e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner 735e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner FnName = "memset"; 736e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } else if (Node->getOpcode() == ISD::MEMCPY || 737e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Node->getOpcode() == ISD::MEMMOVE) { 738e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp2, IntPtrTy)); 739e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp3, IntPtrTy)); 740e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Args.push_back(std::make_pair(Tmp4, IntPtrTy)); 741e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner FnName = Node->getOpcode() == ISD::MEMMOVE ? "memmove" : "memcpy"; 742e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } else { 743e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner assert(0 && "Unknown op!"); 744e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 745e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner std::pair<SDOperand,SDOperand> CallResult = 746e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner TLI.LowerCallTo(Tmp1, Type::VoidTy, 747e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner DAG.getExternalSymbol(FnName, IntPtr), Args, DAG); 748e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner Result = LegalizeOp(CallResult.second); 74955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 75055ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner } 75155ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Custom: 75255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner std::vector<SDOperand> Ops; 75355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Ops.push_back(Tmp1); Ops.push_back(Tmp2); Ops.push_back(Tmp3); 75455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Ops.push_back(Tmp4); Ops.push_back(Tmp5); 75555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(Node->getOpcode(), MVT::Other, Ops); 75655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = TLI.LowerOperation(Result); 75755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = LegalizeOp(Result); 75855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 759e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 760e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner break; 761e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner } 76284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::ADD_PARTS: 76384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::SUB_PARTS: { 76484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner std::vector<SDOperand> Ops; 76584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner bool Changed = false; 76684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 76784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 76884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 76984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner } 77084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner if (Changed) 77184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Ops); 77284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 77384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner } 7743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ADD: 7753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SUB: 7763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::MUL: 7773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::UDIV: 7783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SDIV: 7793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::UREM: 7803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SREM: 7813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::AND: 7823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::OR: 7833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::XOR: 78403c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SHL: 78503c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SRL: 78603c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::SRA: 7873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // LHS 7883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // RHS 7893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0) || 7903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp2 != Node->getOperand(1)) 7913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1,Tmp2); 7923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 7933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ZERO_EXTEND: 7943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SIGN_EXTEND: 7957cc4777a263f6a52877d29201311fde5f6edb632Chris Lattner case ISD::TRUNCATE: 79603c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::FP_EXTEND: 79703c0cf822e9a57109d1b4e6a2705d68852c93e1dChris Lattner case ISD::FP_ROUND: 798ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::FP_TO_SINT: 799ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::FP_TO_UINT: 800ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::SINT_TO_FP: 801ae0aacb8331e1227abea6601e531a10d0e65fdcaChris Lattner case ISD::UINT_TO_FP: 8023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 8033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case Legal: 8043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 8053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (Tmp1 != Node->getOperand(0)) 8063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1); 8073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 808b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner case Expand: 80977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (Node->getOpcode() == ISD::SINT_TO_FP || 81077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getOpcode() == ISD::UINT_TO_FP) { 81177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, 81277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getValueType(0), Node->getOperand(0)); 81377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = LegalizeOp(Result); 81477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner break; 81577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 816b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner // In the expand case, we must be dealing with a truncate, because 817b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner // otherwise the result would be larger than the source. 818b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner assert(Node->getOpcode() == ISD::TRUNCATE && 819b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner "Shouldn't need to expand other operators here!"); 820b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner ExpandOp(Node->getOperand(0), Tmp1, Tmp2); 821b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner 822b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner // Since the result is legal, we should just be able to truncate the low 823b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner // part of the source. 824b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner Result = DAG.getNode(ISD::TRUNCATE, Node->getValueType(0), Tmp1); 825b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner break; 826b00a6425de1ef8668b63f29927c38da8a19ce904Chris Lattner 82703c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Promote: 82803c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (Node->getOpcode()) { 8291713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner case ISD::ZERO_EXTEND: 8301713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 83147e9223e06390897c3834f8c527001df392570ffChris Lattner // NOTE: Any extend would work here... 83247e9223e06390897c3834f8c527001df392570ffChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, Op.getValueType(), Result); 83347e9223e06390897c3834f8c527001df392570ffChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND_INREG, Op.getValueType(), 8341713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result, Node->getOperand(0).getValueType()); 83503c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 83603c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SIGN_EXTEND: 8371713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 83847e9223e06390897c3834f8c527001df392570ffChris Lattner // NOTE: Any extend would work here... 839d5d56825123665b60d4eada0a4ad7d0adc5cf3a3Chris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, Op.getValueType(), Result); 8401713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 8411713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result, Node->getOperand(0).getValueType()); 8421713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 84303c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::TRUNCATE: 8441713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 8451713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::TRUNCATE, Op.getValueType(), Result); 8461713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 84703c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_EXTEND: 8481713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = PromoteOp(Node->getOperand(0)); 8491713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner if (Result.getValueType() != Op.getValueType()) 8501713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner // Dynamically dead while we have only 2 FP types. 8511713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner Result = DAG.getNode(ISD::FP_EXTEND, Op.getValueType(), Result); 8521713e73b8ac53f045150cb2a7d7ba9781dc35ef8Chris Lattner break; 85303c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_ROUND: 85403c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_TO_SINT: 85503c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::FP_TO_UINT: 856f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 857f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(Node->getOpcode(), Op.getValueType(), Result); 858f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 85903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SINT_TO_FP: 860f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 861f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 862f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result, Node->getOperand(0).getValueType()); 863f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::SINT_TO_FP, Op.getValueType(), Result); 864f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 86503c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::UINT_TO_FP: 866f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = PromoteOp(Node->getOperand(0)); 867f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND_INREG, Result.getValueType(), 868f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result, Node->getOperand(0).getValueType()); 869f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner Result = DAG.getNode(ISD::UINT_TO_FP, Op.getValueType(), Result); 870f8161d83f0201a32a33a0c875eb43df81d8586abChris Lattner break; 87103c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 8723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 8733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 8740f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::FP_ROUND_INREG: 8750f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::SIGN_EXTEND_INREG: 87645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner case ISD::ZERO_EXTEND_INREG: { 8770f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 87845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MVT::ValueType ExtraVT = cast<MVTSDNode>(Node)->getExtraValueType(); 87945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner 88045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // If this operation is not supported, convert it to a shl/shr or load/store 88145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // pair. 88255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner switch (TLI.getOperationAction(Node->getOpcode(), ExtraVT)) { 88355ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner default: assert(0 && "This action not supported for this op yet!"); 88455ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Legal: 88555ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner if (Tmp1 != Node->getOperand(0)) 88655ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Tmp1, 88755ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner ExtraVT); 88855ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 88955ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner case TargetLowering::Expand: 89045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // If this is an integer extend and shifts are supported, do that. 89145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner if (Node->getOpcode() == ISD::ZERO_EXTEND_INREG) { 89245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: we could fall back on load/store here too for targets without 89345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // AND. However, it is doubtful that any exist. 89445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // AND out the appropriate bits. 89545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner SDOperand Mask = 89645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner DAG.getConstant((1ULL << MVT::getSizeInBits(ExtraVT))-1, 89745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getValueType(0)); 89845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::AND, Node->getValueType(0), 89945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getOperand(0), Mask); 90045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else if (Node->getOpcode() == ISD::SIGN_EXTEND_INREG) { 90145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: we could fall back on load/store here too for targets without 90245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // SAR. However, it is doubtful that any exist. 90345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned BitsDiff = MVT::getSizeInBits(Node->getValueType(0)) - 90445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MVT::getSizeInBits(ExtraVT); 90545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner SDOperand ShiftCst = DAG.getConstant(BitsDiff, MVT::i8); 90645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::SHL, Node->getValueType(0), 90745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getOperand(0), ShiftCst); 90845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::SRA, Node->getValueType(0), 90945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result, ShiftCst); 91045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else if (Node->getOpcode() == ISD::FP_ROUND_INREG) { 91145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // The only way we can lower this is to turn it into a STORETRUNC, 91245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // EXTLOAD pair, targetting a temporary location (a stack slot). 91345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner 91445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // NOTE: there is a choice here between constantly creating new stack 91545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // slots and always reusing the same one. We currently always create 91645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner // new ones, as reuse may inhibit scheduling. 91745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner const Type *Ty = MVT::getTypeForValueType(ExtraVT); 91845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned TySize = (unsigned)TLI.getTargetData().getTypeSize(Ty); 91945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner unsigned Align = TLI.getTargetData().getTypeAlignment(Ty); 92045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MachineFunction &MF = DAG.getMachineFunction(); 92145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner int SSFI = 92245b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner MF.getFrameInfo()->CreateStackObject((unsigned)TySize, Align); 92345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner SDOperand StackSlot = DAG.getFrameIndex(SSFI, TLI.getPointerTy()); 92445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, DAG.getEntryNode(), 92545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Node->getOperand(0), StackSlot, ExtraVT); 92645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = DAG.getNode(ISD::EXTLOAD, Node->getValueType(0), 92745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result, StackSlot, ExtraVT); 92845b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } else { 92945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner assert(0 && "Unknown op"); 93045b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 93145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner Result = LegalizeOp(Result); 93255ba8fba750ee0a51a9d74fa33b7242d24a4ff35Chris Lattner break; 93345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 9340f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 9353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 93645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 9373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 9388afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner if (!Op.Val->hasOneUse()) 9398afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner AddLegalizedOperand(Op, Result); 9403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 9413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 9423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 9433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 9448b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// PromoteOp - Given an operation that produces a value in an invalid type, 9458b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// promote it to compute the value into a larger type. The produced value will 9468b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// have the correct bits for the low portion of the register, but no guarantee 9478b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner/// is made about the top bits: it may be zero, sign-extended, or garbage. 94803c8546ec57523970874917854a2fb77b1ff598eChris LattnerSDOperand SelectionDAGLegalize::PromoteOp(SDOperand Op) { 94903c8546ec57523970874917854a2fb77b1ff598eChris Lattner MVT::ValueType VT = Op.getValueType(); 95071c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 95103c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(getTypeAction(VT) == Promote && 95203c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Caller should expand or legalize operands that are not promotable!"); 95303c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(NVT > VT && MVT::isInteger(NVT) == MVT::isInteger(VT) && 95403c8546ec57523970874917854a2fb77b1ff598eChris Lattner "Cannot promote to smaller type!"); 95503c8546ec57523970874917854a2fb77b1ff598eChris Lattner 95603c8546ec57523970874917854a2fb77b1ff598eChris Lattner std::map<SDOperand, SDOperand>::iterator I = PromotedNodes.find(Op); 95703c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (I != PromotedNodes.end()) return I->second; 95803c8546ec57523970874917854a2fb77b1ff598eChris Lattner 95903c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand Tmp1, Tmp2, Tmp3; 96003c8546ec57523970874917854a2fb77b1ff598eChris Lattner 96103c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDOperand Result; 96203c8546ec57523970874917854a2fb77b1ff598eChris Lattner SDNode *Node = Op.Val; 96303c8546ec57523970874917854a2fb77b1ff598eChris Lattner 9640f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // Promotion needs an optimization step to clean up after it, and is not 9650f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // careful to avoid operations the target does not support. Make sure that 9660f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // all generated operations are legalized in the next iteration. 9670f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner NeedsAnotherIteration = true; 9680f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 96903c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (Node->getOpcode()) { 97003c8546ec57523970874917854a2fb77b1ff598eChris Lattner default: 97103c8546ec57523970874917854a2fb77b1ff598eChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 97203c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(0 && "Do not know how to promote this operator!"); 97303c8546ec57523970874917854a2fb77b1ff598eChris Lattner abort(); 97403c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::Constant: 97503c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND, NVT, Op); 97603c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isa<ConstantSDNode>(Result) && "Didn't constant fold zext?"); 97703c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 97803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::ConstantFP: 97903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::FP_EXTEND, NVT, Op); 98003c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(isa<ConstantFPSDNode>(Result) && "Didn't constant fold fp_extend?"); 98103c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 982ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner case ISD::CopyFromReg: 983ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Result = DAG.getCopyFromReg(cast<RegSDNode>(Node)->getReg(), NVT, 984ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner Node->getOperand(0)); 985ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner // Remember that we legalized the chain. 986ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 987ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner break; 988ef5cd1d3cf7d0b20987a545fcd2d0af2bfe6c422Chris Lattner 98982fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner case ISD::SETCC: 99082fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner assert(getTypeAction(TLI.getSetCCResultTy()) == Legal && 99182fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner "SetCC type is not legal??"); 99282fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Result = DAG.getSetCC(cast<SetCCSDNode>(Node)->getCondition(), 99382fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner TLI.getSetCCResultTy(), Node->getOperand(0), 99482fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Node->getOperand(1)); 99582fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner Result = LegalizeOp(Result); 99682fbfb6984c1feb7d44a077ac2dc031f4a950005Chris Lattner break; 99703c8546ec57523970874917854a2fb77b1ff598eChris Lattner 99803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::TRUNCATE: 99903c8546ec57523970874917854a2fb77b1ff598eChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 100003c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Legal: 100103c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = LegalizeOp(Node->getOperand(0)); 100203c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(Result.getValueType() >= NVT && 100303c8546ec57523970874917854a2fb77b1ff598eChris Lattner "This truncation doesn't make sense!"); 100403c8546ec57523970874917854a2fb77b1ff598eChris Lattner if (Result.getValueType() > NVT) // Truncate to NVT instead of VT 100503c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::TRUNCATE, NVT, Result); 100603c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 100703c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Expand: 100803c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(0 && "Cannot handle expand yet"); 100903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case Promote: 101003c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(0 && "Cannot handle promote-promote yet"); 101103c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 101203c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 10138b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SIGN_EXTEND: 10148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::ZERO_EXTEND: 10158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 10168b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: assert(0 && "BUG: Smaller reg should have been promoted!"); 10178b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 10188b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Input is legal? Just do extend all the way to the larger type. 10198b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 10208b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 10218b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10228b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 10238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Promote the reg if it's smaller. 10248b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = PromoteOp(Node->getOperand(0)); 10258b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The high bits are not guaranteed to be anything. Insert an extend. 10268b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (Node->getOpcode() == ISD::SIGN_EXTEND) 10278b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Result, VT); 10288b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner else 10298b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Result, VT); 10308b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10318b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 10328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10338b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 10348b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_EXTEND: 10358b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "Case not implemented. Dynamically dead with 2 FP types!"); 10368b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_ROUND: 10378b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 10388b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: assert(0 && "BUG: Cannot expand FP regs!"); 10398b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: assert(0 && "Unreachable with 2 FP types!"); 10408b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 10418b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Input is legal? Do an FP_ROUND_INREG. 10428b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 10438b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 10448b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10458b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 10468b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10478b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 10488b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SINT_TO_FP: 10498b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UINT_TO_FP: 10508b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 10518b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 10528b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = LegalizeOp(Node->getOperand(0)); 105377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // No extra round required here. 105477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 10558b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10568b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 10578b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 10588b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = PromoteOp(Node->getOperand(0)); 10598b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (Node->getOpcode() == ISD::SINT_TO_FP) 10608b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, Result.getValueType(), 10618b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result, Node->getOperand(0).getValueType()); 10628b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner else 10638b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::ZERO_EXTEND_INREG, Result.getValueType(), 10648b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result, Node->getOperand(0).getValueType()); 106577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // No extra round required here. 106677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Result); 10678b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10688b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: 106977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, NVT, 107077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Node->getOperand(0)); 107177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = LegalizeOp(Result); 107277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 107377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // Round if we cannot tolerate excess precision. 107477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (NoExcessFPPrecision) 107577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 107677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner break; 10778b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 10788b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10798b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 10808b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_TO_SINT: 10818b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::FP_TO_UINT: 10828b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 10838b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Legal: 10848b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); 10858b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10868b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Promote: 10878b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input result is prerounded, so we don't have to do anything 10888b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // special. 10898b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 10908b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10918b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case Expand: 10928b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(0 && "not implemented"); 10938b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 10948b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1); 10958b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 10968b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 109703c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::AND: 109803c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::OR: 109903c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::XOR: 11000f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::ADD: 11018b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SUB: 11020f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner case ISD::MUL: 11030f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // The input may have strange things in the top bits of the registers, but 11040f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // these operations don't care. They may have wierd bits going out, but 11050f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // that too is okay if they are integer operations. 11060f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11070f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 11080f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner assert(Tmp1.getValueType() == NVT && Tmp2.getValueType() == NVT); 11090f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 11100f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 11110f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // However, if this is a floating point operation, they will give excess 11120f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // precision that we may not be able to tolerate. If we DO allow excess 11130f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner // precision, just leave it, otherwise excise it. 11148b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // FIXME: Why would we need to round FP ops more than integer ones? 11158b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Is Round(Add(Add(A,B),C)) != Round(Add(Round(Add(A,B)), C)) 11160f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner if (MVT::isFloatingPoint(NVT) && NoExcessFPPrecision) 11170f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 11180f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner break; 11190f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner 11208b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SDIV: 11218b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SREM: 11228b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // These operators require that their input be sign extended. 11238b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11248b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 11258b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isInteger(NVT)) { 11268b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 1127ff3e50cc39db6939b637165997283f59412387bbChris Lattner Tmp2 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp2, VT); 11288b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner } 11298b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 11308b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 11318b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // Perform FP_ROUND: this is probably overly pessimistic. 11328b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner if (MVT::isFloatingPoint(NVT) && NoExcessFPPrecision) 11338b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT); 11348b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11358b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 11368b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UDIV: 11378b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::UREM: 11388b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // These operators require that their input be zero extended. 11398b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11408b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); 11418b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner assert(MVT::isInteger(NVT) && "Operators don't apply to FP!"); 11428b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp1, VT); 1143ff3e50cc39db6939b637165997283f59412387bbChris Lattner Tmp2 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp2, VT); 11448b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2); 11458b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11468b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner 11478b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SHL: 11488b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11498b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 11508b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SHL, NVT, Tmp1, Tmp2); 11518b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11528b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SRA: 11538b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input value must be properly sign extended. 11548b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11558b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::SIGN_EXTEND_INREG, NVT, Tmp1, VT); 11568b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 11578b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SRA, NVT, Tmp1, Tmp2); 11588b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 11598b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner case ISD::SRL: 11608b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner // The input value must be properly zero extended. 11618b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); 11628b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp1 = DAG.getNode(ISD::ZERO_EXTEND_INREG, NVT, Tmp1, VT); 11638b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); 11648b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner Result = DAG.getNode(ISD::SRL, NVT, Tmp1, Tmp2); 11658b6fa22e722e1de7522aae51d6cdd0f552d489daChris Lattner break; 116603c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::LOAD: 116703c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 116803c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 116903c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::EXTLOAD, NVT, Tmp1, Tmp2, VT); 117003c8546ec57523970874917854a2fb77b1ff598eChris Lattner 117103c8546ec57523970874917854a2fb77b1ff598eChris Lattner // Remember that we legalized the chain. 117203c8546ec57523970874917854a2fb77b1ff598eChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 117303c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 117403c8546ec57523970874917854a2fb77b1ff598eChris Lattner case ISD::SELECT: 117547e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 117647e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 117747e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 117847e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0));// Legalize the condition. 117947e9223e06390897c3834f8c527001df392570ffChris Lattner break; 118047e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 118147e9223e06390897c3834f8c527001df392570ffChris Lattner Tmp1 = PromoteOp(Node->getOperand(0)); // Promote the condition. 118247e9223e06390897c3834f8c527001df392570ffChris Lattner break; 118347e9223e06390897c3834f8c527001df392570ffChris Lattner } 118403c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp2 = PromoteOp(Node->getOperand(1)); // Legalize the op0 118503c8546ec57523970874917854a2fb77b1ff598eChris Lattner Tmp3 = PromoteOp(Node->getOperand(2)); // Legalize the op1 118603c8546ec57523970874917854a2fb77b1ff598eChris Lattner Result = DAG.getNode(ISD::SELECT, NVT, Tmp1, Tmp2, Tmp3); 118703c8546ec57523970874917854a2fb77b1ff598eChris Lattner break; 11888ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner case ISD::CALL: { 11898ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 11908ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 11918ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner 11923d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 11933d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) 11943d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 11953d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 11968ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner assert(Node->getNumValues() == 2 && Op.ResNo == 0 && 11978ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner "Can only promote single result calls"); 11988ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner std::vector<MVT::ValueType> RetTyVTs; 11998ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.reserve(2); 12008ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.push_back(NVT); 12018ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner RetTyVTs.push_back(MVT::Other); 12023d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner SDNode *NC = DAG.getCall(RetTyVTs, Tmp1, Tmp2, Ops); 12038ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner Result = SDOperand(NC, 0); 12048ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner 12058ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner // Insert the new chain mapping. 12068ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 12078ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner break; 12088ac532c55eb7f8698466f25d1a8a01240c44ec7dChris Lattner } 120903c8546ec57523970874917854a2fb77b1ff598eChris Lattner } 121003c8546ec57523970874917854a2fb77b1ff598eChris Lattner 121103c8546ec57523970874917854a2fb77b1ff598eChris Lattner assert(Result.Val && "Didn't set a result!"); 121203c8546ec57523970874917854a2fb77b1ff598eChris Lattner AddPromotedOperand(Op, Result); 121303c8546ec57523970874917854a2fb77b1ff598eChris Lattner return Result; 121403c8546ec57523970874917854a2fb77b1ff598eChris Lattner} 12153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 121684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner/// ExpandAddSub - Find a clever way to expand this add operation into 121784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner/// subcomponents. 121884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattnervoid SelectionDAGLegalize::ExpandAddSub(bool isAdd, SDOperand LHS,SDOperand RHS, 121984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner SDOperand &Lo, SDOperand &Hi) { 122084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner // Expand the subcomponents. 122184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner SDOperand LHSL, LHSH, RHSL, RHSH; 122284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandOp(LHS, LHSL, LHSH); 122384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandOp(RHS, RHSL, RHSH); 122484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner 122584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner // Convert this add to the appropriate ADDC pair. The low part has no carry 122684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner // in. 122784f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner unsigned Opc = isAdd ? ISD::ADD_PARTS : ISD::SUB_PARTS; 122884f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner std::vector<SDOperand> Ops; 122984f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LHSL); 123084f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(LHSH); 123184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(RHSL); 123284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Ops.push_back(RHSH); 123384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Lo = DAG.getNode(Opc, LHSL.getValueType(), Ops); 123484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner Hi = Lo.getValue(1); 123584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner} 123684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner 1237e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// ExpandShift - Try to find a clever way to expand this shift operation out to 1238e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// smaller elements. If we can't find a way that is more efficient than a 1239e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// libcall on this target, return false. Otherwise, return true with the 1240e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner/// low-parts expanded into Lo and Hi. 1241e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattnerbool SelectionDAGLegalize::ExpandShift(unsigned Opc, SDOperand Op,SDOperand Amt, 1242e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand &Lo, SDOperand &Hi) { 1243e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner assert((Opc == ISD::SHL || Opc == ISD::SRA || Opc == ISD::SRL) && 1244e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner "This is not a shift!"); 1245e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(Op.getValueType()); 1246e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1247e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we have an efficient select operation (or if the selects will all fold 1248e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // away), lower to some complex code, otherwise just emit the libcall. 1249e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (TLI.getOperationAction(ISD::SELECT, NVT) != TargetLowering::Legal && 1250e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner !isa<ConstantSDNode>(Amt)) 1251e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner return false; 1252e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1253e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand InL, InH; 1254e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner ExpandOp(Op, InL, InH); 1255e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand ShAmt = LegalizeOp(Amt); 1256e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner MVT::ValueType ShTy = ShAmt.getValueType(); 1257e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1258e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner unsigned NVTBits = MVT::getSizeInBits(NVT); 1259e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand NAmt = DAG.getNode(ISD::SUB, ShTy, // NAmt = 32-ShAmt 1260e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits, ShTy), ShAmt); 1261e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1262e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner // Compare the unmasked shift amount against 32. 1263e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand Cond = DAG.getSetCC(ISD::SETGE, TLI.getSetCCResultTy(), ShAmt, 1264e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner DAG.getConstant(NVTBits, ShTy)); 1265e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner 1266e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (TLI.getShiftAmountFlavor() != TargetLowering::Mask) { 1267e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner ShAmt = DAG.getNode(ISD::AND, ShTy, ShAmt, // ShAmt &= 31 1268e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1269e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner NAmt = DAG.getNode(ISD::AND, ShTy, NAmt, // NAmt &= 31 1270e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1271e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } 1272e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1273e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner if (Opc == ISD::SHL) { 1274e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand T1 = DAG.getNode(ISD::OR, NVT,// T1 = (Hi << Amt) | (Lo >> NAmt) 1275e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SHL, NVT, InH, ShAmt), 1276e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SRL, NVT, InL, NAmt)); 1277e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand T2 = DAG.getNode(ISD::SHL, NVT, InL, ShAmt); // T2 = Lo << Amt&31 1278e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1279e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, Cond, T2, T1); 1280e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, Cond, DAG.getConstant(0, NVT), T2); 1281e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } else { 128277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand HiLoPart = DAG.getNode(ISD::SELECT, NVT, 128377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getSetCC(ISD::SETEQ, 128477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TLI.getSetCCResultTy(), NAmt, 128577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(32, ShTy)), 128677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(0, NVT), 128777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getNode(ISD::SHL, NVT, InH, NAmt)); 1288e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand T1 = DAG.getNode(ISD::OR, NVT,// T1 = (Hi << NAmt) | (Lo >> Amt) 128977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner HiLoPart, 1290e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner DAG.getNode(ISD::SRL, NVT, InL, ShAmt)); 1291e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner SDOperand T2 = DAG.getNode(Opc, NVT, InH, ShAmt); // T2 = InH >> ShAmt&31 1292e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1293e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner SDOperand HiPart; 129477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (Opc == ISD::SRA) 129577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner HiPart = DAG.getNode(ISD::SRA, NVT, InH, 129677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner DAG.getConstant(NVTBits-1, ShTy)); 1297e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner else 1298e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner HiPart = DAG.getConstant(0, NVT); 1299e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, Cond, T2, T1); 1300e5544f851a2a3f7b06339b132e60ad2f2d53e7b8Chris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, Cond, HiPart, T2); 1301e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner } 1302e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner return true; 1303e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner} 130477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 130577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 130677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 130777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 130877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 130977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 131077e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerSDOperand SelectionDAGLegalize::ExpandLibCall(const char *Name, SDNode *Node, 131177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand &Hi) { 131277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 131377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 131477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner MVT::ValueType ArgVT = Node->getOperand(i).getValueType(); 131577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *ArgTy = MVT::getTypeForValueType(ArgVT); 131677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args.push_back(std::make_pair(Node->getOperand(i), ArgTy)); 131777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 131877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Callee = DAG.getExternalSymbol(Name, TLI.getPointerTy()); 131977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 132077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // We don't care about token chains for libcalls. We just use the entry 132177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // node as our input and ignore the output chain. This allows us to place 132277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // calls wherever we need them to satisfy data dependences. 132377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *RetTy = MVT::getTypeForValueType(Node->getValueType(0)); 132477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Result = TLI.LowerCallTo(DAG.getEntryNode(), RetTy, Callee, 132577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args, DAG).first; 132677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner switch (getTypeAction(Result.getValueType())) { 132777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner default: assert(0 && "Unknown thing"); 132877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Legal: 132977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner return Result; 133077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Promote: 133177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(0 && "Cannot promote this yet!"); 133277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case Expand: 133377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Lo; 133477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner ExpandOp(Result, Lo, Hi); 133577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner return Lo; 133677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 133777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 133877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 133977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner/// ExpandIntToFP - Expand a [US]INT_TO_FP operation, assuming that the 134077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner/// destination type is legal. 134177e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerSDOperand SelectionDAGLegalize:: 134277e77a6aa0ab25a812947aed477220dd11220a18Chris LattnerExpandIntToFP(bool isSigned, MVT::ValueType DestTy, SDOperand Source) { 134377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(getTypeAction(DestTy) == Legal && "Destination type is not legal!"); 134477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(getTypeAction(Source.getValueType()) == Expand && 134577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner "This is not an expansion!"); 134677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(Source.getValueType() == MVT::i64 && "Only handle expand from i64!"); 134777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 134877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const char *FnName; 134977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (isSigned) { 135077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (DestTy == MVT::f32) 135177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner FnName = "__floatdisf"; 135277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner else { 135377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(DestTy == MVT::f64 && "Unknown fp value type!"); 135477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner FnName = "__floatdidf"; 135577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 135677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } else { 135777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // If this is unsigned, and not supported, first perform the conversion to 135877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // signed, then adjust the result if the sign bit is set. 135977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand SignedConv = ExpandIntToFP(false, DestTy, Source); 136077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 136177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner assert(0 && "Unsigned casts not supported yet!"); 136277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 136377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner SDOperand Callee = DAG.getExternalSymbol(FnName, TLI.getPointerTy()); 136477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 136577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 136677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *ArgTy = MVT::getTypeForValueType(Source.getValueType()); 136777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args.push_back(std::make_pair(Source, ArgTy)); 136877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 136977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // We don't care about token chains for libcalls. We just use the entry 137077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // node as our input and ignore the output chain. This allows us to place 137177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner // calls wherever we need them to satisfy data dependences. 137277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner const Type *RetTy = MVT::getTypeForValueType(DestTy); 137377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner return TLI.LowerCallTo(DAG.getEntryNode(), RetTy, Callee, 137477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Args, DAG).first; 137577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 137677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 1377e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1378e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 13793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// ExpandOp - Expand the specified SDOperand into its two component pieces 13803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// Lo&Hi. Note that the Op MUST be an expanded type. As a result of this, the 13813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// LegalizeNodes map is filled in for any results that are not expanded, the 13823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// ExpandedNodes map is filled in for any results that are expanded, and the 13833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// Lo/Hi values are returned. 13843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ 13853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner MVT::ValueType VT = Op.getValueType(); 138671c42a0190300a8903aaea80467b88f15f327ea9Chris Lattner MVT::ValueType NVT = TLI.getTypeToTransformTo(VT); 13873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDNode *Node = Op.Val; 13883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(getTypeAction(VT) == Expand && "Not an expanded type!"); 13893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::isInteger(VT) && "Cannot expand FP values!"); 13903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(MVT::isInteger(NVT) && NVT < VT && 13913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Cannot expand to FP value or to larger int value!"); 13923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 13933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // If there is more than one use of this, see if we already expanded it. 13943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // There is no use remembering values that only have a single use, as the map 13953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // entries will never be reused. 13963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!Node->hasOneUse()) { 13973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::map<SDOperand, std::pair<SDOperand, SDOperand> >::iterator I 13983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner = ExpandedNodes.find(Op); 13993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (I != ExpandedNodes.end()) { 14003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = I->second.first; 14013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = I->second.second; 14023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return; 14033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14064e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // Expanding to multiple registers needs to perform an optimization step, and 14074e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // is not careful to avoid operations the target does not support. Make sure 14084e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // that all generated operations are legalized in the next iteration. 14094e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner NeedsAnotherIteration = true; 14103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 14123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 14133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::cerr << "NODE: "; Node->dump(); std::cerr << "\n"; 14143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(0 && "Do not know how to expand this operator!"); 14153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner abort(); 14163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::Constant: { 14173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner uint64_t Cst = cast<ConstantSDNode>(Node)->getValue(); 14183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getConstant(Cst, NVT); 14193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getConstant(Cst >> MVT::getSizeInBits(NVT), NVT); 14203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 14213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CopyFromReg: { 142418c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner unsigned Reg = cast<RegSDNode>(Node)->getReg(); 14253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Aggregate register values are always in consequtive pairs. 142669a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Lo = DAG.getCopyFromReg(Reg, NVT, Node->getOperand(0)); 142769a52155d2eff066b49dbac385113002fd9dba14Chris Lattner Hi = DAG.getCopyFromReg(Reg+1, NVT, Lo.getValue(1)); 142869a52155d2eff066b49dbac385113002fd9dba14Chris Lattner 142969a52155d2eff066b49dbac385113002fd9dba14Chris Lattner // Remember that we legalized the chain. 143069a52155d2eff066b49dbac385113002fd9dba14Chris Lattner AddLegalizedOperand(Op.getValue(1), Hi.getValue(1)); 143169a52155d2eff066b49dbac385113002fd9dba14Chris Lattner 14323e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isTypeLegal(NVT) && "Cannot expand this multiple times yet!"); 14333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 14343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::LOAD: { 14373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Ch = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 14383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Ptr = LegalizeOp(Node->getOperand(1)); // Legalize the pointer. 14393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getLoad(NVT, Ch, Ptr); 14403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Increment the pointer to the other half. 144238d6be5d49e61e4be9bb12ee3cedf2a4fcddb8f3Chris Lattner unsigned IncrementSize = MVT::getSizeInBits(Lo.getValueType())/8; 14433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Ptr = DAG.getNode(ISD::ADD, Ptr.getValueType(), Ptr, 14443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner getIntPtrConstant(IncrementSize)); 1445ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi = DAG.getLoad(NVT, Ch, Ptr); 1446ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner 1447ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // Build a factor node to remember that this load is independent of the 1448ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner // other one. 1449ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner SDOperand TF = DAG.getNode(ISD::TokenFactor, MVT::Other, Lo.getValue(1), 1450ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner Hi.getValue(1)); 14513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remember that we legalized the chain. 1453ec39a45bdb1eca0cfe77be6a05cc43e16f2338ebChris Lattner AddLegalizedOperand(Op.getValue(1), TF); 14543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!TLI.isLittleEndian()) 14553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::swap(Lo, Hi); 14563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 14573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::CALL: { 14593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Chain = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 14603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand Callee = LegalizeOp(Node->getOperand(1)); // Legalize the callee. 14613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14623d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner bool Changed = false; 14633d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner std::vector<SDOperand> Ops; 14643d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner for (unsigned i = 2, e = Node->getNumOperands(); i != e; ++i) { 14653d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Ops.push_back(LegalizeOp(Node->getOperand(i))); 14663d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner Changed |= Ops.back() != Node->getOperand(i); 14673d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner } 14683d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner 14693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(Node->getNumValues() == 2 && Op.ResNo == 0 && 14703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Can only expand a call once so far, not i64 -> i16!"); 14713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::vector<MVT::ValueType> RetTyVTs; 14733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.reserve(3); 14743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(NVT); 14753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(NVT); 14763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner RetTyVTs.push_back(MVT::Other); 14773d9dffc5863d0319aa9c5cb156045ae6778cba01Chris Lattner SDNode *NC = DAG.getCall(RetTyVTs, Chain, Callee, Ops); 14783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = SDOperand(NC, 0); 14793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = SDOperand(NC, 1); 14803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Insert the new chain mapping. 1482e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner AddLegalizedOperand(Op.getValue(1), Hi.getValue(2)); 14833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 14843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::AND: 14863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::OR: 14873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::XOR: { // Simple logical operators -> two trivial pieces. 14883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand LL, LH, RL, RH; 14893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(0), LL, LH); 14903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), RL, RH); 14913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(Node->getOpcode(), NVT, LL, RL); 14923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getNode(Node->getOpcode(), NVT, LH, RH); 14933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 14943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SELECT: { 14963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SDOperand C, LL, LH, RL, RH; 149747e9223e06390897c3834f8c527001df392570ffChris Lattner 149847e9223e06390897c3834f8c527001df392570ffChris Lattner switch (getTypeAction(Node->getOperand(0).getValueType())) { 149947e9223e06390897c3834f8c527001df392570ffChris Lattner case Expand: assert(0 && "It's impossible to expand bools"); 150047e9223e06390897c3834f8c527001df392570ffChris Lattner case Legal: 150147e9223e06390897c3834f8c527001df392570ffChris Lattner C = LegalizeOp(Node->getOperand(0)); // Legalize the condition. 150247e9223e06390897c3834f8c527001df392570ffChris Lattner break; 150347e9223e06390897c3834f8c527001df392570ffChris Lattner case Promote: 150447e9223e06390897c3834f8c527001df392570ffChris Lattner C = PromoteOp(Node->getOperand(0)); // Promote the condition. 150547e9223e06390897c3834f8c527001df392570ffChris Lattner break; 150647e9223e06390897c3834f8c527001df392570ffChris Lattner } 15073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(1), LL, LH); 15083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner ExpandOp(Node->getOperand(2), RL, RH); 15093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(ISD::SELECT, NVT, C, LL, RL); 15103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getNode(ISD::SELECT, NVT, C, LH, RH); 15113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 15123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::SIGN_EXTEND: { 15143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The low part is just a sign extension of the input (which degenerates to 15153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // a copy). 15163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(ISD::SIGN_EXTEND, NVT, LegalizeOp(Node->getOperand(0))); 15173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The high part is obtained by SRA'ing all but one of the bits of the lo 15193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // part. 15202dad454af674cb41a14a85ad6ce5c85c43959acdChris Lattner unsigned LoSize = MVT::getSizeInBits(Lo.getValueType()); 15212dad454af674cb41a14a85ad6ce5c85c43959acdChris Lattner Hi = DAG.getNode(ISD::SRA, NVT, Lo, DAG.getConstant(LoSize-1, MVT::i8)); 15223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 15233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner case ISD::ZERO_EXTEND: 15253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The low part is just a zero extension of the input (which degenerates to 15263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // a copy). 15273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Lo = DAG.getNode(ISD::ZERO_EXTEND, NVT, LegalizeOp(Node->getOperand(0))); 15283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // The high part is just a zero. 15303e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Hi = DAG.getConstant(0, NVT); 15313e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 15324e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner 15334e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // These operators cannot be expanded directly, emit them as calls to 15344e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner // library functions. 15354e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner case ISD::FP_TO_SINT: 15364e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner if (Node->getOperand(0).getValueType() == MVT::f32) 153777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixsfdi", Node, Hi); 15384e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner else 153977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixdfdi", Node, Hi); 15404e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner break; 15414e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner case ISD::FP_TO_UINT: 15424e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner if (Node->getOperand(0).getValueType() == MVT::f32) 154377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixunssfdi", Node, Hi); 15444e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner else 154577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__fixunsdfdi", Node, Hi); 15464e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner break; 15474e6c74689944be1de80c99dc0688ec0bcbd743aaChris Lattner 1548e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SHL: 1549e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 155077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SHL, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 1551e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1552e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 155377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__ashldi3", Node, Hi); 1554e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1555e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 1556e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SRA: 1557e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 155877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SRA, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 1559e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1560e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 156177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__ashrdi3", Node, Hi); 1562e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1563e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner case ISD::SRL: 1564e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // If we can emit an efficient shift operation, do so now. 156577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner if (ExpandShift(ISD::SRL, Node->getOperand(0), Node->getOperand(1), Lo, Hi)) 1566e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1567e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner // Otherwise, emit a libcall. 156877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner Lo = ExpandLibCall("__lshrdi3", Node, Hi); 1569e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner break; 1570e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 157184f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::ADD: 157284f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandAddSub(true, Node->getOperand(0), Node->getOperand(1), Lo, Hi); 157384f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 157484f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner case ISD::SUB: 157584f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner ExpandAddSub(false, Node->getOperand(0), Node->getOperand(1), Lo, Hi); 157684f6788044f9b1b47945e98ce23a6cf4d7d32579Chris Lattner break; 157777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::MUL: Lo = ExpandLibCall("__muldi3" , Node, Hi); break; 157877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::SDIV: Lo = ExpandLibCall("__divdi3" , Node, Hi); break; 157977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::UDIV: Lo = ExpandLibCall("__udivdi3", Node, Hi); break; 158077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::SREM: Lo = ExpandLibCall("__moddi3" , Node, Hi); break; 158177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner case ISD::UREM: Lo = ExpandLibCall("__umoddi3", Node, Hi); break; 15823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remember in a map if the values will be reused later. 15853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner if (!Node->hasOneUse()) { 15863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner bool isNew = ExpandedNodes.insert(std::make_pair(Op, 15873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner std::make_pair(Lo, Hi))).second; 15883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner assert(isNew && "Value already expanded?!?"); 15893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 15943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 15953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAG::Legalize(TargetLowering &TLI) { 15963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 15973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 15983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAGLegalize(TLI, *this).Run(); 15993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 16003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1601