PPCISelDAGToDAG.cpp revision 242f2557cc242b2d132e5a3e6c3a98961a7e4349
1a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner//===-- PPC32ISelDAGToDAG.cpp - PPC32 pattern matching inst selector ------===// 2a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 3a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// The LLVM Compiler Infrastructure 4a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 5a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// This file was developed by Chris Lattner and is distributed under 6a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// the University of Illinois Open Source License. See LICENSE.TXT for details. 7a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 8a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner//===----------------------------------------------------------------------===// 9a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 10a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// This file defines a pattern matching instruction selector for 32 bit PowerPC, 11a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// converting from a legalized dag to a PPC dag. 12a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 13a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner//===----------------------------------------------------------------------===// 14a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 15a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "PowerPC.h" 16a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "PPC32TargetMachine.h" 17a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "PPC32ISelLowering.h" 184416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner#include "llvm/CodeGen/MachineInstrBuilder.h" 194416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner#include "llvm/CodeGen/MachineFunction.h" 204416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner#include "llvm/CodeGen/SSARegMap.h" 21a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/CodeGen/SelectionDAG.h" 22a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/CodeGen/SelectionDAGISel.h" 23a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/Target/TargetOptions.h" 24a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/ADT/Statistic.h" 252fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner#include "llvm/Constants.h" 264416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner#include "llvm/GlobalValue.h" 27a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/Support/Debug.h" 28a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/Support/MathExtras.h" 29a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerusing namespace llvm; 30a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 31a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnernamespace { 32a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Statistic<> FusedFP ("ppc-codegen", "Number of fused fp operations"); 33a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Statistic<> FrameOff("ppc-codegen", "Number of frame idx offsets collapsed"); 34a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 35a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner //===--------------------------------------------------------------------===// 36a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// PPC32DAGToDAGISel - PPC32 specific code to select PPC32 machine 37a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// instructions for SelectionDAG operations. 38a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// 39a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner class PPC32DAGToDAGISel : public SelectionDAGISel { 40a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner PPC32TargetLowering PPC32Lowering; 414416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner unsigned GlobalBaseReg; 42a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner public: 43a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner PPC32DAGToDAGISel(TargetMachine &TM) 44a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner : SelectionDAGISel(PPC32Lowering), PPC32Lowering(TM) {} 45a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 464416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner virtual bool runOnFunction(Function &Fn) { 474416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner // Make sure we re-emit a set of the global base reg if necessary 484416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner GlobalBaseReg = 0; 494416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner return SelectionDAGISel::runOnFunction(Fn); 504416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner } 514416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner 52a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// getI32Imm - Return a target constant with the specified value, of type 53a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// i32. 54a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner inline SDOperand getI32Imm(unsigned Imm) { 55a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return CurDAG->getTargetConstant(Imm, MVT::i32); 56a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 574416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner 584416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner /// getGlobalBaseReg - insert code into the entry mbb to materialize the PIC 594416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner /// base register. Return the virtual register that holds this value. 609944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner SDOperand getGlobalBaseReg(); 61a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 62a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Select - Convert the specified operand from a target-independent to a 63a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // target-specific node if it hasn't already been changed. 64a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Select(SDOperand Op); 65a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 66a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDNode *SelectIntImmediateExpr(SDOperand LHS, SDOperand RHS, 67a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned OCHi, unsigned OCLo, 68a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner bool IsArithmetic = false, 69a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner bool Negate = false); 7002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman SDNode *SelectBitfieldInsert(SDNode *N); 7102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 722fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner /// SelectCC - Select a comparison of the specified values with the 732fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner /// specified condition code, returning the CR# of the expression. 742fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner SDOperand SelectCC(SDOperand LHS, SDOperand RHS, ISD::CondCode CC); 752fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner 769944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner /// SelectAddr - Given the specified address, return the two operands for a 779944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner /// load/store instruction, and return true if it should be an indexed [r+r] 789944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner /// operation. 799944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner bool SelectAddr(SDOperand Addr, SDOperand &Op1, SDOperand &Op2); 809944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner 81047b952e298352fe6feffedf02e359601133f465Chris Lattner SDOperand BuildSDIVSequence(SDNode *N); 82047b952e298352fe6feffedf02e359601133f465Chris Lattner SDOperand BuildUDIVSequence(SDNode *N); 83047b952e298352fe6feffedf02e359601133f465Chris Lattner 84a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// InstructionSelectBasicBlock - This callback is invoked by 85a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// SelectionDAGISel when it has created a SelectionDAG for us to codegen. 86a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner virtual void InstructionSelectBasicBlock(SelectionDAG &DAG) { 87a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner DEBUG(BB->dump()); 88d607c12e8e8533028a66c9f533007c6c32a64cefChris Lattner // Select target instructions for the DAG. 89efa6abcb957b9002a7e6708eb6f7885a93957ea7Chris Lattner DAG.setRoot(Select(DAG.getRoot())); 90333bd835bd0d01f0e49b2f3d590be685a4959e16Chris Lattner CodeGenMap.clear(); 91a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner DAG.RemoveDeadNodes(); 92d607c12e8e8533028a66c9f533007c6c32a64cefChris Lattner 93d607c12e8e8533028a66c9f533007c6c32a64cefChris Lattner // Emit machine code to BB. 94d607c12e8e8533028a66c9f533007c6c32a64cefChris Lattner ScheduleAndEmitDAG(DAG); 95a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 96a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 97a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner virtual const char *getPassName() const { 98a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return "PowerPC DAG->DAG Pattern Instruction Selection"; 99a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 100af165385112037cb942e94ea562a67990b7d6220Chris Lattner 101af165385112037cb942e94ea562a67990b7d6220Chris Lattner// Include the pieces autogenerated from the target description. 102af165385112037cb942e94ea562a67990b7d6220Chris Lattner#include "PPC32GenDAGISel.inc" 103a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner }; 104a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 105a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 1066cd40d5888f905a3820d5d6c71e57cc0e02abb4aChris Lattner 1074416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner/// getGlobalBaseReg - Output the instructions required to put the 1084416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner/// base address to use for accessing globals into a register. 1094416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner/// 1109944b76cfe74981d2c41c8237d25267ba0c467c7Chris LattnerSDOperand PPC32DAGToDAGISel::getGlobalBaseReg() { 1114416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner if (!GlobalBaseReg) { 1124416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner // Insert the set of GlobalBaseReg into the first MBB of the function 1134416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner MachineBasicBlock &FirstMBB = BB->getParent()->front(); 1144416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner MachineBasicBlock::iterator MBBI = FirstMBB.begin(); 1154416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner SSARegMap *RegMap = BB->getParent()->getSSARegMap(); 1164416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner GlobalBaseReg = RegMap->createVirtualRegister(PPC32::GPRCRegisterClass); 1174416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner BuildMI(FirstMBB, MBBI, PPC::MovePCtoLR, 0, PPC::LR); 1184416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner BuildMI(FirstMBB, MBBI, PPC::MFLR, 1, GlobalBaseReg); 1194416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner } 1209944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner return CurDAG->getRegister(GlobalBaseReg, MVT::i32); 1214416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner} 1224416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner 1234416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner 1240f3257a3302b60c128a667db6736e81335316c1eNate Begeman// isIntImmediate - This method tests to see if a constant operand. 1250f3257a3302b60c128a667db6736e81335316c1eNate Begeman// If so Imm will receive the 32 bit value. 1260f3257a3302b60c128a667db6736e81335316c1eNate Begemanstatic bool isIntImmediate(SDNode *N, unsigned& Imm) { 1270f3257a3302b60c128a667db6736e81335316c1eNate Begeman if (N->getOpcode() == ISD::Constant) { 1280f3257a3302b60c128a667db6736e81335316c1eNate Begeman Imm = cast<ConstantSDNode>(N)->getValue(); 1290f3257a3302b60c128a667db6736e81335316c1eNate Begeman return true; 1300f3257a3302b60c128a667db6736e81335316c1eNate Begeman } 1310f3257a3302b60c128a667db6736e81335316c1eNate Begeman return false; 1320f3257a3302b60c128a667db6736e81335316c1eNate Begeman} 1330f3257a3302b60c128a667db6736e81335316c1eNate Begeman 134cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// isOprShiftImm - Returns true if the specified operand is a shift opcode with 135cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// a immediate shift count less than 32. 136cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begemanstatic bool isOprShiftImm(SDNode *N, unsigned& Opc, unsigned& SH) { 137cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Opc = N->getOpcode(); 138cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return (Opc == ISD::SHL || Opc == ISD::SRL || Opc == ISD::SRA) && 139cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman isIntImmediate(N->getOperand(1).Val, SH) && SH < 32; 140cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman} 141cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 142cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// isRunOfOnes - Returns true iff Val consists of one contiguous run of 1s with 143cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// any number of 0s on either side. The 1s are allowed to wrap from LSB to 144cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// MSB, so 0x000FFF0, 0x0000FFFF, and 0xFF0000FF are all runs. 0x0F0F0000 is 145cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// not, since all 1s are not contiguous. 146cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begemanstatic bool isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME) { 147cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (isShiftedMask_32(Val)) { 148cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // look for the first non-zero bit 149cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman MB = CountLeadingZeros_32(Val); 150cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // look for the first zero bit after the run of ones 151cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman ME = CountLeadingZeros_32((Val - 1) ^ Val); 152cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return true; 1532fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner } else { 1542fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner Val = ~Val; // invert mask 1552fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner if (isShiftedMask_32(Val)) { 1562fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner // effectively look for the first zero bit 1572fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner ME = CountLeadingZeros_32(Val) - 1; 1582fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner // effectively look for the first one bit after the run of zeros 1592fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner MB = CountLeadingZeros_32((Val - 1) ^ Val) + 1; 1602fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner return true; 1612fe76e58eb734a09ec08ea006a32700572ffc0caChris Lattner } 162cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 163cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // no run present 164cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return false; 165cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman} 166cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 167cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// isRotateAndMask - Returns true if Mask and Shift can be folded in to a rotate 168cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// and mask opcode and mask operation. 169cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begemanstatic bool isRotateAndMask(SDNode *N, unsigned Mask, bool IsShiftMask, 170cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman unsigned &SH, unsigned &MB, unsigned &ME) { 171cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman unsigned Shift = 32; 172cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman unsigned Indeterminant = ~0; // bit mask marking indeterminant results 173cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman unsigned Opcode = N->getOpcode(); 17415055733f85da5dc9a29e64cc1a2eeda38898f68Chris Lattner if (N->getNumOperands() != 2 || 17515055733f85da5dc9a29e64cc1a2eeda38898f68Chris Lattner !isIntImmediate(N->getOperand(1).Val, Shift) || (Shift > 31)) 176cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return false; 177cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 178cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (Opcode == ISD::SHL) { 179cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // apply shift left to mask if it comes first 180cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (IsShiftMask) Mask = Mask << Shift; 181cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // determine which bits are made indeterminant by shift 182cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Indeterminant = ~(0xFFFFFFFFu << Shift); 183cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } else if (Opcode == ISD::SRA || Opcode == ISD::SRL) { 184cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // apply shift right to mask if it comes first 185cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (IsShiftMask) Mask = Mask >> Shift; 186cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // determine which bits are made indeterminant by shift 187cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Indeterminant = ~(0xFFFFFFFFu >> Shift); 188cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // adjust for the left rotate 189cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Shift = 32 - Shift; 190cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } else { 191cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return false; 192cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 193cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 194cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // if the mask doesn't intersect any Indeterminant bits 195cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (Mask && !(Mask & Indeterminant)) { 196cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman SH = Shift; 197cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // make sure the mask is still a mask (wrap arounds may not be) 198cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return isRunOfOnes(Mask, MB, ME); 199cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 200cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return false; 201cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman} 202cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 2030f3257a3302b60c128a667db6736e81335316c1eNate Begeman// isOpcWithIntImmediate - This method tests to see if the node is a specific 2040f3257a3302b60c128a667db6736e81335316c1eNate Begeman// opcode and that it has a immediate integer right operand. 2050f3257a3302b60c128a667db6736e81335316c1eNate Begeman// If so Imm will receive the 32 bit value. 2060f3257a3302b60c128a667db6736e81335316c1eNate Begemanstatic bool isOpcWithIntImmediate(SDNode *N, unsigned Opc, unsigned& Imm) { 2070f3257a3302b60c128a667db6736e81335316c1eNate Begeman return N->getOpcode() == Opc && isIntImmediate(N->getOperand(1).Val, Imm); 2080f3257a3302b60c128a667db6736e81335316c1eNate Begeman} 2090f3257a3302b60c128a667db6736e81335316c1eNate Begeman 2100f3257a3302b60c128a667db6736e81335316c1eNate Begeman// isOprNot - Returns true if the specified operand is an xor with immediate -1. 2110f3257a3302b60c128a667db6736e81335316c1eNate Begemanstatic bool isOprNot(SDNode *N) { 2120f3257a3302b60c128a667db6736e81335316c1eNate Begeman unsigned Imm; 2130f3257a3302b60c128a667db6736e81335316c1eNate Begeman return isOpcWithIntImmediate(N, ISD::XOR, Imm) && (signed)Imm == -1; 2140f3257a3302b60c128a667db6736e81335316c1eNate Begeman} 2150f3257a3302b60c128a667db6736e81335316c1eNate Begeman 216a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// Immediate constant composers. 217a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// Lo16 - grabs the lo 16 bits from a 32 bit constant. 218a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// Hi16 - grabs the hi 16 bits from a 32 bit constant. 219a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// HA16 - computes the hi bits required if the lo bits are add/subtracted in 220a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// arithmethically. 221a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerstatic unsigned Lo16(unsigned x) { return x & 0x0000FFFF; } 222a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerstatic unsigned Hi16(unsigned x) { return Lo16(x >> 16); } 223a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerstatic unsigned HA16(unsigned x) { return Hi16((signed)x - (signed short)x); } 224a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 225a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// isIntImmediate - This method tests to see if a constant operand. 226a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// If so Imm will receive the 32 bit value. 227a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerstatic bool isIntImmediate(SDOperand N, unsigned& Imm) { 228a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N)) { 229a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Imm = (unsigned)CN->getSignExtended(); 230a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return true; 231a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 232a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return false; 233a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 234a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 23502b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// SelectBitfieldInsert - turn an or of two masked values into 23602b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// the rotate left word immediate then mask insert (rlwimi) instruction. 23702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// Returns true on success, false if the caller still needs to select OR. 23802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// 23902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// Patterns matched: 24002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// 1. or shl, and 5. or and, and 24102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// 2. or and, shl 6. or shl, shr 24202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// 3. or shr, and 7. or shr, shl 24302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman/// 4. or and, shr 24402b88a4586704f34bc65afca3348453eae69d1d3Nate BegemanSDNode *PPC32DAGToDAGISel::SelectBitfieldInsert(SDNode *N) { 24502b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman bool IsRotate = false; 24602b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman unsigned TgtMask = 0xFFFFFFFF, InsMask = 0xFFFFFFFF, SH = 0; 24702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman unsigned Value; 24802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 24902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman SDOperand Op0 = N->getOperand(0); 25002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman SDOperand Op1 = N->getOperand(1); 25102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 25202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman unsigned Op0Opc = Op0.getOpcode(); 25302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman unsigned Op1Opc = Op1.getOpcode(); 25402b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 25502b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // Verify that we have the correct opcodes 25602b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (ISD::SHL != Op0Opc && ISD::SRL != Op0Opc && ISD::AND != Op0Opc) 25702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman return false; 25802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (ISD::SHL != Op1Opc && ISD::SRL != Op1Opc && ISD::AND != Op1Opc) 25902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman return false; 26002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 26102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // Generate Mask value for Target 26202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (isIntImmediate(Op0.getOperand(1), Value)) { 26302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman switch(Op0Opc) { 2641368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner case ISD::SHL: TgtMask <<= Value; break; 2651368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner case ISD::SRL: TgtMask >>= Value; break; 2661368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner case ISD::AND: TgtMask &= Value; break; 26702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 26802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } else { 26902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman return 0; 27002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 27102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 27202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // Generate Mask value for Insert 2731368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner if (!isIntImmediate(Op1.getOperand(1), Value)) 27402b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman return 0; 2751368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner 2761368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner switch(Op1Opc) { 2771368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner case ISD::SHL: 2781368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner SH = Value; 2791368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner InsMask <<= SH; 2801368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner if (Op0Opc == ISD::SRL) IsRotate = true; 2811368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner break; 2821368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner case ISD::SRL: 2831368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner SH = Value; 2841368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner InsMask >>= SH; 2851368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner SH = 32-SH; 2861368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner if (Op0Opc == ISD::SHL) IsRotate = true; 2871368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner break; 2881368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner case ISD::AND: 2891368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner InsMask &= Value; 2901368721d532d0d291a03bb3fff7f94805e5919b6Chris Lattner break; 29102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 29202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 29302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // If both of the inputs are ANDs and one of them has a logical shift by 29402b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // constant as its input, make that AND the inserted value so that we can 29502b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // combine the shift into the rotate part of the rlwimi instruction 29602b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman bool IsAndWithShiftOp = false; 29702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (Op0Opc == ISD::AND && Op1Opc == ISD::AND) { 29802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (Op1.getOperand(0).getOpcode() == ISD::SHL || 29902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman Op1.getOperand(0).getOpcode() == ISD::SRL) { 30002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (isIntImmediate(Op1.getOperand(0).getOperand(1), Value)) { 30102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman SH = Op1.getOperand(0).getOpcode() == ISD::SHL ? Value : 32 - Value; 30202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman IsAndWithShiftOp = true; 30302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 30402b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } else if (Op0.getOperand(0).getOpcode() == ISD::SHL || 30502b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman Op0.getOperand(0).getOpcode() == ISD::SRL) { 30602b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (isIntImmediate(Op0.getOperand(0).getOperand(1), Value)) { 30702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman std::swap(Op0, Op1); 30802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman std::swap(TgtMask, InsMask); 30902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman SH = Op1.getOperand(0).getOpcode() == ISD::SHL ? Value : 32 - Value; 31002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman IsAndWithShiftOp = true; 31102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 31202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 31302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 31402b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 31502b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // Verify that the Target mask and Insert mask together form a full word mask 31602b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // and that the Insert mask is a run of set bits (which implies both are runs 31702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // of set bits). Given that, Select the arguments and generate the rlwimi 31802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // instruction. 31902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman unsigned MB, ME; 32002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (((TgtMask & InsMask) == 0) && isRunOfOnes(InsMask, MB, ME)) { 32102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman bool fullMask = (TgtMask ^ InsMask) == 0xFFFFFFFF; 32202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman bool Op0IsAND = Op0Opc == ISD::AND; 32302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // Check for rotlwi / rotrwi here, a special case of bitfield insert 32402b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman // where both bitfield halves are sourced from the same value. 32502b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (IsRotate && fullMask && 32602b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman N->getOperand(0).getOperand(0) == N->getOperand(1).getOperand(0)) { 32702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman Op0 = CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, 32802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman Select(N->getOperand(0).getOperand(0)), 32902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman getI32Imm(SH), getI32Imm(0), getI32Imm(31)); 33002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman return Op0.Val; 33102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 33202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman SDOperand Tmp1 = (Op0IsAND && fullMask) ? Select(Op0.getOperand(0)) 33302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman : Select(Op0); 33402b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman SDOperand Tmp2 = IsAndWithShiftOp ? Select(Op1.getOperand(0).getOperand(0)) 33502b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman : Select(Op1.getOperand(0)); 33602b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman Op0 = CurDAG->getTargetNode(PPC::RLWIMI, MVT::i32, Tmp1, Tmp2, 33702b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman getI32Imm(SH), getI32Imm(MB), getI32Imm(ME)); 33802b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman return Op0.Val; 33902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman } 34002b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman return 0; 34102b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman} 34202b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman 343a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// SelectIntImmediateExpr - Choose code for integer operations with an immediate 344a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// operand. 345a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris LattnerSDNode *PPC32DAGToDAGISel::SelectIntImmediateExpr(SDOperand LHS, SDOperand RHS, 346a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned OCHi, unsigned OCLo, 347a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner bool IsArithmetic, 348a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner bool Negate) { 349a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Check to make sure this is a constant. 350a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ConstantSDNode *CN = dyn_cast<ConstantSDNode>(RHS); 351a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Exit if not a constant. 352a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (!CN) return 0; 353a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Extract immediate. 354a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned C = (unsigned)CN->getValue(); 355a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Negate if required (ISD::SUB). 356a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Negate) C = -C; 357a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Get the hi and lo portions of constant. 358a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned Hi = IsArithmetic ? HA16(C) : Hi16(C); 359a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned Lo = Lo16(C); 360a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 361a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // If two instructions are needed and usage indicates it would be better to 362a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // load immediate into a register, bail out. 363a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Hi && Lo && CN->use_size() > 2) return false; 364a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 365a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Select the first operand. 366a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Opr0 = Select(LHS); 367a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 368a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Lo) // Add in the lo-part. 369a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Opr0 = CurDAG->getTargetNode(OCLo, MVT::i32, Opr0, getI32Imm(Lo)); 370a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Hi) // Add in the hi-part. 371a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Opr0 = CurDAG->getTargetNode(OCHi, MVT::i32, Opr0, getI32Imm(Hi)); 372a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return Opr0.Val; 373a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 374a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 3759944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner/// SelectAddr - Given the specified address, return the two operands for a 3769944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner/// load/store instruction, and return true if it should be an indexed [r+r] 3779944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner/// operation. 3789944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattnerbool PPC32DAGToDAGISel::SelectAddr(SDOperand Addr, SDOperand &Op1, 3799944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner SDOperand &Op2) { 3809944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner unsigned imm = 0; 3819944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner if (Addr.getOpcode() == ISD::ADD) { 3829944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner if (isIntImmediate(Addr.getOperand(1), imm) && isInt16(imm)) { 3839944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op1 = getI32Imm(Lo16(imm)); 384e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner if (FrameIndexSDNode *FI = 385e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner dyn_cast<FrameIndexSDNode>(Addr.getOperand(0))) { 3869944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner ++FrameOff; 387e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner Op2 = CurDAG->getTargetFrameIndex(FI->getIndex(), MVT::i32); 3889944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } else { 3899944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op2 = Select(Addr.getOperand(0)); 3909944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } 3919944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner return false; 3929944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } else { 3939944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op1 = Select(Addr.getOperand(0)); 3949944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op2 = Select(Addr.getOperand(1)); 3959944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner return true; // [r+r] 3969944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } 3979944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } 3989944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner 3999944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner // Now check if we're dealing with a global, and whether or not we should emit 4009944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner // an optimized load or store for statics. 4019944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner if (GlobalAddressSDNode *GN = dyn_cast<GlobalAddressSDNode>(Addr)) { 4029944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner GlobalValue *GV = GN->getGlobal(); 4039944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner if (!GV->hasWeakLinkage() && !GV->isExternal()) { 4049944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op1 = CurDAG->getTargetGlobalAddress(GV, MVT::i32); 4059944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner if (PICEnabled) 4069944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op2 = CurDAG->getTargetNode(PPC::ADDIS, MVT::i32, getGlobalBaseReg(), 4079944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op1); 4089944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner else 4099944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op2 = CurDAG->getTargetNode(PPC::LIS, MVT::i32, Op1); 4109944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner return false; 4119944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } 412e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner } else if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Addr)) { 4139944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op1 = getI32Imm(0); 414e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner Op2 = CurDAG->getTargetFrameIndex(FI->getIndex(), MVT::i32); 4159944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner return false; 4169944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Addr)) { 4179944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op1 = Addr; 4189944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner if (PICEnabled) 4199944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op2 = CurDAG->getTargetNode(PPC::ADDIS, MVT::i32, getGlobalBaseReg(),Op1); 4209944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner else 4219944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op2 = CurDAG->getTargetNode(PPC::LIS, MVT::i32, Op1); 4229944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner return false; 4239944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } 4249944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op1 = getI32Imm(0); 4259944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op2 = Select(Addr); 4269944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner return false; 4279944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner} 428a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 4292fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner/// SelectCC - Select a comparison of the specified values with the specified 4302fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner/// condition code, returning the CR# of the expression. 4312fbb4579d6d6bbde8387283b78307c2ea477a312Chris LattnerSDOperand PPC32DAGToDAGISel::SelectCC(SDOperand LHS, SDOperand RHS, 4322fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner ISD::CondCode CC) { 4332fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // Always select the LHS. 4342fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner LHS = Select(LHS); 4352fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner 4362fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // Use U to determine whether the SETCC immediate range is signed or not. 4372fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner if (MVT::isInteger(LHS.getValueType())) { 4382fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner bool U = ISD::isUnsignedIntSetCC(CC); 4392fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner unsigned Imm; 4402fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner if (isIntImmediate(RHS, Imm) && 4412fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner ((U && isUInt16(Imm)) || (!U && isInt16(Imm)))) 4422fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner return CurDAG->getTargetNode(U ? PPC::CMPLWI : PPC::CMPWI, MVT::i32, 4432fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner LHS, getI32Imm(Lo16(Imm))); 4442fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner return CurDAG->getTargetNode(U ? PPC::CMPLW : PPC::CMPW, MVT::i32, 4452fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner LHS, Select(RHS)); 4462fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner } else { 4472fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner return CurDAG->getTargetNode(PPC::FCMPU, MVT::i32, LHS, Select(RHS)); 4482fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner } 4492fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner} 4502fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner 4512fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner/// getBCCForSetCC - Returns the PowerPC condition branch mnemonic corresponding 4522fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner/// to Condition. 4532fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattnerstatic unsigned getBCCForSetCC(ISD::CondCode CC) { 4542fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner switch (CC) { 4552fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner default: assert(0 && "Unknown condition!"); abort(); 4562fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETEQ: return PPC::BEQ; 4572fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETNE: return PPC::BNE; 4582fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETULT: 4592fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETLT: return PPC::BLT; 4602fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETULE: 4612fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETLE: return PPC::BLE; 4622fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETUGT: 4632fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETGT: return PPC::BGT; 4642fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETUGE: 4652fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::SETGE: return PPC::BGE; 4662fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner } 4672fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner return 0; 4682fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner} 4692fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner 47064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner/// getCRIdxForSetCC - Return the index of the condition register field 47164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner/// associated with the SetCC condition, and whether or not the field is 47264906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner/// treated as inverted. That is, lt = 0; ge = 0 inverted. 47364906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattnerstatic unsigned getCRIdxForSetCC(ISD::CondCode CC, bool& Inv) { 47464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner switch (CC) { 47564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner default: assert(0 && "Unknown condition!"); abort(); 47664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETULT: 47764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETLT: Inv = false; return 0; 47864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETUGE: 47964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETGE: Inv = true; return 0; 48064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETUGT: 48164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETGT: Inv = false; return 1; 48264906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETULE: 48364906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETLE: Inv = true; return 1; 48464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETEQ: Inv = false; return 2; 48564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETNE: Inv = true; return 2; 48664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 48764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner return 0; 48864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner} 4899944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner 490047b952e298352fe6feffedf02e359601133f465Chris Lattner// Structure used to return the necessary information to codegen an SDIV as 491047b952e298352fe6feffedf02e359601133f465Chris Lattner// a multiply. 492047b952e298352fe6feffedf02e359601133f465Chris Lattnerstruct ms { 493047b952e298352fe6feffedf02e359601133f465Chris Lattner int m; // magic number 494047b952e298352fe6feffedf02e359601133f465Chris Lattner int s; // shift amount 495047b952e298352fe6feffedf02e359601133f465Chris Lattner}; 496047b952e298352fe6feffedf02e359601133f465Chris Lattner 497047b952e298352fe6feffedf02e359601133f465Chris Lattnerstruct mu { 498047b952e298352fe6feffedf02e359601133f465Chris Lattner unsigned int m; // magic number 499047b952e298352fe6feffedf02e359601133f465Chris Lattner int a; // add indicator 500047b952e298352fe6feffedf02e359601133f465Chris Lattner int s; // shift amount 501047b952e298352fe6feffedf02e359601133f465Chris Lattner}; 502047b952e298352fe6feffedf02e359601133f465Chris Lattner 503047b952e298352fe6feffedf02e359601133f465Chris Lattner/// magic - calculate the magic numbers required to codegen an integer sdiv as 504047b952e298352fe6feffedf02e359601133f465Chris Lattner/// a sequence of multiply and shifts. Requires that the divisor not be 0, 1, 505047b952e298352fe6feffedf02e359601133f465Chris Lattner/// or -1. 506047b952e298352fe6feffedf02e359601133f465Chris Lattnerstatic struct ms magic(int d) { 507047b952e298352fe6feffedf02e359601133f465Chris Lattner int p; 508047b952e298352fe6feffedf02e359601133f465Chris Lattner unsigned int ad, anc, delta, q1, r1, q2, r2, t; 509047b952e298352fe6feffedf02e359601133f465Chris Lattner const unsigned int two31 = 0x80000000U; 510047b952e298352fe6feffedf02e359601133f465Chris Lattner struct ms mag; 511047b952e298352fe6feffedf02e359601133f465Chris Lattner 512047b952e298352fe6feffedf02e359601133f465Chris Lattner ad = abs(d); 513047b952e298352fe6feffedf02e359601133f465Chris Lattner t = two31 + ((unsigned int)d >> 31); 514047b952e298352fe6feffedf02e359601133f465Chris Lattner anc = t - 1 - t%ad; // absolute value of nc 515047b952e298352fe6feffedf02e359601133f465Chris Lattner p = 31; // initialize p 516047b952e298352fe6feffedf02e359601133f465Chris Lattner q1 = two31/anc; // initialize q1 = 2p/abs(nc) 517047b952e298352fe6feffedf02e359601133f465Chris Lattner r1 = two31 - q1*anc; // initialize r1 = rem(2p,abs(nc)) 518047b952e298352fe6feffedf02e359601133f465Chris Lattner q2 = two31/ad; // initialize q2 = 2p/abs(d) 519047b952e298352fe6feffedf02e359601133f465Chris Lattner r2 = two31 - q2*ad; // initialize r2 = rem(2p,abs(d)) 520047b952e298352fe6feffedf02e359601133f465Chris Lattner do { 521047b952e298352fe6feffedf02e359601133f465Chris Lattner p = p + 1; 522047b952e298352fe6feffedf02e359601133f465Chris Lattner q1 = 2*q1; // update q1 = 2p/abs(nc) 523047b952e298352fe6feffedf02e359601133f465Chris Lattner r1 = 2*r1; // update r1 = rem(2p/abs(nc)) 524047b952e298352fe6feffedf02e359601133f465Chris Lattner if (r1 >= anc) { // must be unsigned comparison 525047b952e298352fe6feffedf02e359601133f465Chris Lattner q1 = q1 + 1; 526047b952e298352fe6feffedf02e359601133f465Chris Lattner r1 = r1 - anc; 527047b952e298352fe6feffedf02e359601133f465Chris Lattner } 528047b952e298352fe6feffedf02e359601133f465Chris Lattner q2 = 2*q2; // update q2 = 2p/abs(d) 529047b952e298352fe6feffedf02e359601133f465Chris Lattner r2 = 2*r2; // update r2 = rem(2p/abs(d)) 530047b952e298352fe6feffedf02e359601133f465Chris Lattner if (r2 >= ad) { // must be unsigned comparison 531047b952e298352fe6feffedf02e359601133f465Chris Lattner q2 = q2 + 1; 532047b952e298352fe6feffedf02e359601133f465Chris Lattner r2 = r2 - ad; 533047b952e298352fe6feffedf02e359601133f465Chris Lattner } 534047b952e298352fe6feffedf02e359601133f465Chris Lattner delta = ad - r2; 535047b952e298352fe6feffedf02e359601133f465Chris Lattner } while (q1 < delta || (q1 == delta && r1 == 0)); 536047b952e298352fe6feffedf02e359601133f465Chris Lattner 537047b952e298352fe6feffedf02e359601133f465Chris Lattner mag.m = q2 + 1; 538047b952e298352fe6feffedf02e359601133f465Chris Lattner if (d < 0) mag.m = -mag.m; // resulting magic number 539047b952e298352fe6feffedf02e359601133f465Chris Lattner mag.s = p - 32; // resulting shift 540047b952e298352fe6feffedf02e359601133f465Chris Lattner return mag; 541047b952e298352fe6feffedf02e359601133f465Chris Lattner} 542047b952e298352fe6feffedf02e359601133f465Chris Lattner 543047b952e298352fe6feffedf02e359601133f465Chris Lattner/// magicu - calculate the magic numbers required to codegen an integer udiv as 544047b952e298352fe6feffedf02e359601133f465Chris Lattner/// a sequence of multiply, add and shifts. Requires that the divisor not be 0. 545047b952e298352fe6feffedf02e359601133f465Chris Lattnerstatic struct mu magicu(unsigned d) 546047b952e298352fe6feffedf02e359601133f465Chris Lattner{ 547047b952e298352fe6feffedf02e359601133f465Chris Lattner int p; 548047b952e298352fe6feffedf02e359601133f465Chris Lattner unsigned int nc, delta, q1, r1, q2, r2; 549047b952e298352fe6feffedf02e359601133f465Chris Lattner struct mu magu; 550047b952e298352fe6feffedf02e359601133f465Chris Lattner magu.a = 0; // initialize "add" indicator 551047b952e298352fe6feffedf02e359601133f465Chris Lattner nc = - 1 - (-d)%d; 552047b952e298352fe6feffedf02e359601133f465Chris Lattner p = 31; // initialize p 553047b952e298352fe6feffedf02e359601133f465Chris Lattner q1 = 0x80000000/nc; // initialize q1 = 2p/nc 554047b952e298352fe6feffedf02e359601133f465Chris Lattner r1 = 0x80000000 - q1*nc; // initialize r1 = rem(2p,nc) 555047b952e298352fe6feffedf02e359601133f465Chris Lattner q2 = 0x7FFFFFFF/d; // initialize q2 = (2p-1)/d 556047b952e298352fe6feffedf02e359601133f465Chris Lattner r2 = 0x7FFFFFFF - q2*d; // initialize r2 = rem((2p-1),d) 557047b952e298352fe6feffedf02e359601133f465Chris Lattner do { 558047b952e298352fe6feffedf02e359601133f465Chris Lattner p = p + 1; 559047b952e298352fe6feffedf02e359601133f465Chris Lattner if (r1 >= nc - r1 ) { 560047b952e298352fe6feffedf02e359601133f465Chris Lattner q1 = 2*q1 + 1; // update q1 561047b952e298352fe6feffedf02e359601133f465Chris Lattner r1 = 2*r1 - nc; // update r1 562047b952e298352fe6feffedf02e359601133f465Chris Lattner } 563047b952e298352fe6feffedf02e359601133f465Chris Lattner else { 564047b952e298352fe6feffedf02e359601133f465Chris Lattner q1 = 2*q1; // update q1 565047b952e298352fe6feffedf02e359601133f465Chris Lattner r1 = 2*r1; // update r1 566047b952e298352fe6feffedf02e359601133f465Chris Lattner } 567047b952e298352fe6feffedf02e359601133f465Chris Lattner if (r2 + 1 >= d - r2) { 568047b952e298352fe6feffedf02e359601133f465Chris Lattner if (q2 >= 0x7FFFFFFF) magu.a = 1; 569047b952e298352fe6feffedf02e359601133f465Chris Lattner q2 = 2*q2 + 1; // update q2 570047b952e298352fe6feffedf02e359601133f465Chris Lattner r2 = 2*r2 + 1 - d; // update r2 571047b952e298352fe6feffedf02e359601133f465Chris Lattner } 572047b952e298352fe6feffedf02e359601133f465Chris Lattner else { 573047b952e298352fe6feffedf02e359601133f465Chris Lattner if (q2 >= 0x80000000) magu.a = 1; 574047b952e298352fe6feffedf02e359601133f465Chris Lattner q2 = 2*q2; // update q2 575047b952e298352fe6feffedf02e359601133f465Chris Lattner r2 = 2*r2 + 1; // update r2 576047b952e298352fe6feffedf02e359601133f465Chris Lattner } 577047b952e298352fe6feffedf02e359601133f465Chris Lattner delta = d - 1 - r2; 578047b952e298352fe6feffedf02e359601133f465Chris Lattner } while (p < 64 && (q1 < delta || (q1 == delta && r1 == 0))); 579047b952e298352fe6feffedf02e359601133f465Chris Lattner magu.m = q2 + 1; // resulting magic number 580047b952e298352fe6feffedf02e359601133f465Chris Lattner magu.s = p - 32; // resulting shift 581047b952e298352fe6feffedf02e359601133f465Chris Lattner return magu; 582047b952e298352fe6feffedf02e359601133f465Chris Lattner} 583047b952e298352fe6feffedf02e359601133f465Chris Lattner 584047b952e298352fe6feffedf02e359601133f465Chris Lattner/// BuildSDIVSequence - Given an ISD::SDIV node expressing a divide by constant, 585047b952e298352fe6feffedf02e359601133f465Chris Lattner/// return a DAG expression to select that will generate the same value by 586047b952e298352fe6feffedf02e359601133f465Chris Lattner/// multiplying by a magic number. See: 587047b952e298352fe6feffedf02e359601133f465Chris Lattner/// <http://the.wall.riscom.net/books/proc/ppc/cwg/code2.html> 588047b952e298352fe6feffedf02e359601133f465Chris LattnerSDOperand PPC32DAGToDAGISel::BuildSDIVSequence(SDNode *N) { 589047b952e298352fe6feffedf02e359601133f465Chris Lattner int d = (int)cast<ConstantSDNode>(N->getOperand(1))->getValue(); 590047b952e298352fe6feffedf02e359601133f465Chris Lattner ms magics = magic(d); 591047b952e298352fe6feffedf02e359601133f465Chris Lattner // Multiply the numerator (operand 0) by the magic value 592047b952e298352fe6feffedf02e359601133f465Chris Lattner SDOperand Q = CurDAG->getNode(ISD::MULHS, MVT::i32, N->getOperand(0), 593047b952e298352fe6feffedf02e359601133f465Chris Lattner CurDAG->getConstant(magics.m, MVT::i32)); 594047b952e298352fe6feffedf02e359601133f465Chris Lattner // If d > 0 and m < 0, add the numerator 595047b952e298352fe6feffedf02e359601133f465Chris Lattner if (d > 0 && magics.m < 0) 596047b952e298352fe6feffedf02e359601133f465Chris Lattner Q = CurDAG->getNode(ISD::ADD, MVT::i32, Q, N->getOperand(0)); 597047b952e298352fe6feffedf02e359601133f465Chris Lattner // If d < 0 and m > 0, subtract the numerator. 598047b952e298352fe6feffedf02e359601133f465Chris Lattner if (d < 0 && magics.m > 0) 599047b952e298352fe6feffedf02e359601133f465Chris Lattner Q = CurDAG->getNode(ISD::SUB, MVT::i32, Q, N->getOperand(0)); 600047b952e298352fe6feffedf02e359601133f465Chris Lattner // Shift right algebraic if shift value is nonzero 601047b952e298352fe6feffedf02e359601133f465Chris Lattner if (magics.s > 0) 602047b952e298352fe6feffedf02e359601133f465Chris Lattner Q = CurDAG->getNode(ISD::SRA, MVT::i32, Q, 603047b952e298352fe6feffedf02e359601133f465Chris Lattner CurDAG->getConstant(magics.s, MVT::i32)); 604047b952e298352fe6feffedf02e359601133f465Chris Lattner // Extract the sign bit and add it to the quotient 605047b952e298352fe6feffedf02e359601133f465Chris Lattner SDOperand T = 606047b952e298352fe6feffedf02e359601133f465Chris Lattner CurDAG->getNode(ISD::SRL, MVT::i32, Q, CurDAG->getConstant(31, MVT::i32)); 607047b952e298352fe6feffedf02e359601133f465Chris Lattner return CurDAG->getNode(ISD::ADD, MVT::i32, Q, T); 608047b952e298352fe6feffedf02e359601133f465Chris Lattner} 609047b952e298352fe6feffedf02e359601133f465Chris Lattner 610047b952e298352fe6feffedf02e359601133f465Chris Lattner/// BuildUDIVSequence - Given an ISD::UDIV node expressing a divide by constant, 611047b952e298352fe6feffedf02e359601133f465Chris Lattner/// return a DAG expression to select that will generate the same value by 612047b952e298352fe6feffedf02e359601133f465Chris Lattner/// multiplying by a magic number. See: 613047b952e298352fe6feffedf02e359601133f465Chris Lattner/// <http://the.wall.riscom.net/books/proc/ppc/cwg/code2.html> 614047b952e298352fe6feffedf02e359601133f465Chris LattnerSDOperand PPC32DAGToDAGISel::BuildUDIVSequence(SDNode *N) { 615047b952e298352fe6feffedf02e359601133f465Chris Lattner unsigned d = (unsigned)cast<ConstantSDNode>(N->getOperand(1))->getValue(); 616047b952e298352fe6feffedf02e359601133f465Chris Lattner mu magics = magicu(d); 617047b952e298352fe6feffedf02e359601133f465Chris Lattner // Multiply the numerator (operand 0) by the magic value 618047b952e298352fe6feffedf02e359601133f465Chris Lattner SDOperand Q = CurDAG->getNode(ISD::MULHU, MVT::i32, N->getOperand(0), 619047b952e298352fe6feffedf02e359601133f465Chris Lattner CurDAG->getConstant(magics.m, MVT::i32)); 620047b952e298352fe6feffedf02e359601133f465Chris Lattner if (magics.a == 0) { 621047b952e298352fe6feffedf02e359601133f465Chris Lattner return CurDAG->getNode(ISD::SRL, MVT::i32, Q, 622047b952e298352fe6feffedf02e359601133f465Chris Lattner CurDAG->getConstant(magics.s, MVT::i32)); 623047b952e298352fe6feffedf02e359601133f465Chris Lattner } else { 624047b952e298352fe6feffedf02e359601133f465Chris Lattner SDOperand NPQ = CurDAG->getNode(ISD::SUB, MVT::i32, N->getOperand(0), Q); 625047b952e298352fe6feffedf02e359601133f465Chris Lattner NPQ = CurDAG->getNode(ISD::SRL, MVT::i32, NPQ, 626047b952e298352fe6feffedf02e359601133f465Chris Lattner CurDAG->getConstant(1, MVT::i32)); 627047b952e298352fe6feffedf02e359601133f465Chris Lattner NPQ = CurDAG->getNode(ISD::ADD, MVT::i32, NPQ, Q); 628047b952e298352fe6feffedf02e359601133f465Chris Lattner return CurDAG->getNode(ISD::SRL, MVT::i32, NPQ, 629047b952e298352fe6feffedf02e359601133f465Chris Lattner CurDAG->getConstant(magics.s-1, MVT::i32)); 630047b952e298352fe6feffedf02e359601133f465Chris Lattner } 631047b952e298352fe6feffedf02e359601133f465Chris Lattner} 632047b952e298352fe6feffedf02e359601133f465Chris Lattner 633a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// Select - Convert the specified operand from a target-independent to a 634a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// target-specific node if it hasn't already been changed. 635a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris LattnerSDOperand PPC32DAGToDAGISel::Select(SDOperand Op) { 636a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDNode *N = Op.Val; 6370bbea954331b8f08afa5b094dfb0841829c70eaaChris Lattner if (N->getOpcode() >= ISD::BUILTIN_OP_END && 6380bbea954331b8f08afa5b094dfb0841829c70eaaChris Lattner N->getOpcode() < PPCISD::FIRST_NUMBER) 639a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return Op; // Already selected. 640d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner 641d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner // If this has already been converted, use it. 642d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner std::map<SDOperand, SDOperand>::iterator CGMI = CodeGenMap.find(Op); 643d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner if (CGMI != CodeGenMap.end()) return CGMI->second; 644a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 645a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner switch (N->getOpcode()) { 64619c0907ba1c11c81dc231cf7b4143fdaf03466e4Chris Lattner default: break; 647a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::TokenFactor: { 648a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand New; 649a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (N->getNumOperands() == 2) { 650a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Op0 = Select(N->getOperand(0)); 651a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Op1 = Select(N->getOperand(1)); 652a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner New = CurDAG->getNode(ISD::TokenFactor, MVT::Other, Op0, Op1); 653a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } else { 654a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner std::vector<SDOperand> Ops; 655a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 6567e65997c43cc91a5e6eaa0f460b844ef1b5d2fb1Chris Lattner Ops.push_back(Select(N->getOperand(i))); 657a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner New = CurDAG->getNode(ISD::TokenFactor, MVT::Other, Ops); 658a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 659a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 660d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner if (!N->hasOneUse()) CodeGenMap[Op] = New; 661d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner return New; 662a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 663a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::CopyFromReg: { 664a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Chain = Select(N->getOperand(0)); 665a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Chain == N->getOperand(0)) return Op; // No change 666a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand New = CurDAG->getCopyFromReg(Chain, 667a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner cast<RegisterSDNode>(N->getOperand(1))->getReg(), N->getValueType(0)); 668a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return New.getValue(Op.ResNo); 669a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 670a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::CopyToReg: { 671a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Chain = Select(N->getOperand(0)); 672a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Reg = N->getOperand(1); 673a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Val = Select(N->getOperand(2)); 674d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner SDOperand New = CurDAG->getNode(ISD::CopyToReg, MVT::Other, 675d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner Chain, Reg, Val); 676d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner if (!N->hasOneUse()) CodeGenMap[Op] = New; 677d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner return New; 678a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 6792b54400f085391a247dd2c3fffc9f36f7b2dc867Chris Lattner case ISD::UNDEF: 6802b54400f085391a247dd2c3fffc9f36f7b2dc867Chris Lattner if (N->getValueType(0) == MVT::i32) 6812bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::IMPLICIT_DEF_GPR, MVT::i32); 6822b54400f085391a247dd2c3fffc9f36f7b2dc867Chris Lattner else 6832bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::IMPLICIT_DEF_FP, N->getValueType(0)); 68425dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 685e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner case ISD::FrameIndex: { 686e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner int FI = cast<FrameIndexSDNode>(N)->getIndex(); 6872bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::ADDI, MVT::i32, 688e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner CurDAG->getTargetFrameIndex(FI, MVT::i32), 689e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner getI32Imm(0)); 69025dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 691e28e40a2733c5d9a568d1569e2d1d8461716b22dChris Lattner } 69234e17052a77e1a52cae58b2f6d203c663af97eceChris Lattner case ISD::ConstantPool: { 6935839bf2b3bd22689d9dd0e9de66c2dce71d130aeChris Lattner Constant *C = cast<ConstantPoolSDNode>(N)->get(); 6945839bf2b3bd22689d9dd0e9de66c2dce71d130aeChris Lattner SDOperand Tmp, CPI = CurDAG->getTargetConstantPool(C, MVT::i32); 69534e17052a77e1a52cae58b2f6d203c663af97eceChris Lattner if (PICEnabled) 69634e17052a77e1a52cae58b2f6d203c663af97eceChris Lattner Tmp = CurDAG->getTargetNode(PPC::ADDIS, MVT::i32, getGlobalBaseReg(),CPI); 69734e17052a77e1a52cae58b2f6d203c663af97eceChris Lattner else 69834e17052a77e1a52cae58b2f6d203c663af97eceChris Lattner Tmp = CurDAG->getTargetNode(PPC::LIS, MVT::i32, CPI); 6992bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::LA, MVT::i32, Tmp, CPI); 70025dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 70134e17052a77e1a52cae58b2f6d203c663af97eceChris Lattner } 7024416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner case ISD::GlobalAddress: { 7034416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner GlobalValue *GV = cast<GlobalAddressSDNode>(N)->getGlobal(); 7044416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner SDOperand Tmp; 7054416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner SDOperand GA = CurDAG->getTargetGlobalAddress(GV, MVT::i32); 7069944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner if (PICEnabled) 7079944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Tmp = CurDAG->getTargetNode(PPC::ADDIS, MVT::i32, getGlobalBaseReg(), GA); 7089944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner else 7094416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner Tmp = CurDAG->getTargetNode(PPC::LIS, MVT::i32, GA); 7109944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner 7114416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner if (GV->hasWeakLinkage() || GV->isExternal()) 7122bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::LWZ, MVT::i32, GA, Tmp); 7134416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner else 7142bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::LA, MVT::i32, Tmp, GA); 71525dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 7164416f1a0a5b17906b9e162209fd506656a2e07d8Chris Lattner } 7179c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner case ISD::DYNAMIC_STACKALLOC: { 7189c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // FIXME: We are currently ignoring the requested alignment for handling 7199c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // greater than the stack alignment. This will need to be revisited at some 7209c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // point. Align = N.getOperand(2); 7219c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner if (!isa<ConstantSDNode>(N->getOperand(2)) || 7229c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner cast<ConstantSDNode>(N->getOperand(2))->getValue() != 0) { 7239c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner std::cerr << "Cannot allocate stack object with greater alignment than" 7249c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner << " the stack alignment yet!"; 7259c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner abort(); 7269c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner } 7279c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner SDOperand Chain = Select(N->getOperand(0)); 7289c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner SDOperand Amt = Select(N->getOperand(1)); 7299c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner 7309c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner SDOperand R1Reg = CurDAG->getRegister(PPC::R1, MVT::i32); 7319c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner 73275592e4137c3ae7800e1fb8736db28a65bb3c94dChris Lattner SDOperand R1Val = CurDAG->getCopyFromReg(Chain, PPC::R1, MVT::i32); 73375592e4137c3ae7800e1fb8736db28a65bb3c94dChris Lattner Chain = R1Val.getValue(1); 73475592e4137c3ae7800e1fb8736db28a65bb3c94dChris Lattner 7359c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // Subtract the amount (guaranteed to be a multiple of the stack alignment) 7369c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // from the stack pointer, giving us the result pointer. 73775592e4137c3ae7800e1fb8736db28a65bb3c94dChris Lattner SDOperand Result = CurDAG->getTargetNode(PPC::SUBF, MVT::i32, Amt, R1Val); 7389c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner 7399c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // Copy this result back into R1. 7409c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner Chain = CurDAG->getNode(ISD::CopyToReg, MVT::Other, Chain, R1Reg, Result); 7419c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner 7429c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // Copy this result back out of R1 to make sure we're not using the stack 7439c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // space without decrementing the stack pointer. 7449c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner Result = CurDAG->getCopyFromReg(Chain, PPC::R1, MVT::i32); 7459c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner 7469c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner // Finally, replace the DYNAMIC_STACKALLOC with the copyfromreg. 747d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op.getValue(0)] = Result; 748d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op.getValue(1)] = Result.getValue(1); 74925dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(Result.Val, Op.ResNo); 7509c2dece8e2daed25eb2db0f034e004a8342462e6Chris Lattner } 7510bbea954331b8f08afa5b094dfb0841829c70eaaChris Lattner case PPCISD::FSEL: 7520bbea954331b8f08afa5b094dfb0841829c70eaaChris Lattner CurDAG->SelectNodeTo(N, PPC::FSEL, N->getValueType(0), 7530bbea954331b8f08afa5b094dfb0841829c70eaaChris Lattner Select(N->getOperand(0)), 7540bbea954331b8f08afa5b094dfb0841829c70eaaChris Lattner Select(N->getOperand(1)), 7550bbea954331b8f08afa5b094dfb0841829c70eaaChris Lattner Select(N->getOperand(2))); 75625dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 757c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman case PPCISD::FCFID: 758c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman CurDAG->SelectNodeTo(N, PPC::FCFID, N->getValueType(0), 759c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman Select(N->getOperand(0))); 760c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman return SDOperand(N, 0); 761c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman case PPCISD::FCTIDZ: 762c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman CurDAG->SelectNodeTo(N, PPC::FCTIDZ, N->getValueType(0), 763c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman Select(N->getOperand(0))); 764c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman return SDOperand(N, 0); 765f76053269ecc6c7bd3d0b1e90ebdd0cef1bb2bdcChris Lattner case PPCISD::FCTIWZ: 766f76053269ecc6c7bd3d0b1e90ebdd0cef1bb2bdcChris Lattner CurDAG->SelectNodeTo(N, PPC::FCTIWZ, N->getValueType(0), 767f76053269ecc6c7bd3d0b1e90ebdd0cef1bb2bdcChris Lattner Select(N->getOperand(0))); 76825dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 769615c2d0920862ae7d4d766ee3da660ecf2197308Chris Lattner case ISD::FADD: { 770615c2d0920862ae7d4d766ee3da660ecf2197308Chris Lattner MVT::ValueType Ty = N->getValueType(0); 771a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (!NoExcessFPPrecision) { // Match FMA ops 772615c2d0920862ae7d4d766ee3da660ecf2197308Chris Lattner if (N->getOperand(0).getOpcode() == ISD::FMUL && 773a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(0).Val->hasOneUse()) { 774a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ++FusedFP; // Statistic 7752bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Ty == MVT::f64 ? PPC::FMADD : PPC::FMADDS, Ty, 776a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0).getOperand(0)), 777a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0).getOperand(1)), 778a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1))); 77925dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 780615c2d0920862ae7d4d766ee3da660ecf2197308Chris Lattner } else if (N->getOperand(1).getOpcode() == ISD::FMUL && 781a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(1).hasOneUse()) { 782a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ++FusedFP; // Statistic 7832bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Ty == MVT::f64 ? PPC::FMADD : PPC::FMADDS, Ty, 784a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1).getOperand(0)), 785a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1).getOperand(1)), 786a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0))); 78725dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 788a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 789a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 790a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 7912bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Ty == MVT::f64 ? PPC::FADD : PPC::FADDS, Ty, 792a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0)), Select(N->getOperand(1))); 79325dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 794a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 795615c2d0920862ae7d4d766ee3da660ecf2197308Chris Lattner case ISD::FSUB: { 796615c2d0920862ae7d4d766ee3da660ecf2197308Chris Lattner MVT::ValueType Ty = N->getValueType(0); 797a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 798a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (!NoExcessFPPrecision) { // Match FMA ops 799615c2d0920862ae7d4d766ee3da660ecf2197308Chris Lattner if (N->getOperand(0).getOpcode() == ISD::FMUL && 800a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(0).Val->hasOneUse()) { 801a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ++FusedFP; // Statistic 8022bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Ty == MVT::f64 ? PPC::FMSUB : PPC::FMSUBS, Ty, 803a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0).getOperand(0)), 804a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0).getOperand(1)), 805a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1))); 80625dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 807615c2d0920862ae7d4d766ee3da660ecf2197308Chris Lattner } else if (N->getOperand(1).getOpcode() == ISD::FMUL && 808a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(1).Val->hasOneUse()) { 809a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ++FusedFP; // Statistic 8102bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Ty == MVT::f64 ? PPC::FNMSUB : PPC::FNMSUBS, Ty, 811a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1).getOperand(0)), 812a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1).getOperand(1)), 813a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0))); 81425dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 815a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 816a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 8172bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Ty == MVT::f64 ? PPC::FSUB : PPC::FSUBS, Ty, 818a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0)), 819a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1))); 82025dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 82126653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 82288add100b3db715df4275c8ab408e6b51f28ff8fChris Lattner case ISD::SDIV: { 8238784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner unsigned Imm; 8248784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner if (isIntImmediate(N->getOperand(1), Imm)) { 8258784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner if ((signed)Imm > 0 && isPowerOf2_32(Imm)) { 8268784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner SDOperand Op = 8278784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner CurDAG->getTargetNode(PPC::SRAWI, MVT::i32, MVT::Flag, 8288784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner Select(N->getOperand(0)), 8298784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner getI32Imm(Log2_32(Imm))); 8302bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::ADDZE, MVT::i32, 8318784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner Op.getValue(0), Op.getValue(1)); 83225dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 8338784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner } else if ((signed)Imm < 0 && isPowerOf2_32(-Imm)) { 8348784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner SDOperand Op = 8352501d5e29c13f41fc15c0be5fece011db27c8ab3Chris Lattner CurDAG->getTargetNode(PPC::SRAWI, MVT::i32, MVT::Flag, 8368784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner Select(N->getOperand(0)), 8378784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner getI32Imm(Log2_32(-Imm))); 8388784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner SDOperand PT = 8392501d5e29c13f41fc15c0be5fece011db27c8ab3Chris Lattner CurDAG->getTargetNode(PPC::ADDZE, MVT::i32, Op.getValue(0), 8402501d5e29c13f41fc15c0be5fece011db27c8ab3Chris Lattner Op.getValue(1)); 8412bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::NEG, MVT::i32, PT); 84225dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 843047b952e298352fe6feffedf02e359601133f465Chris Lattner } else if (Imm) { 844047b952e298352fe6feffedf02e359601133f465Chris Lattner SDOperand Result = Select(BuildSDIVSequence(N)); 845d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op] = Result; 846d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner return Result; 8478784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner } 8488784a23075f8544f78f8b46cfd10457c1109d433Chris Lattner } 849047b952e298352fe6feffedf02e359601133f465Chris Lattner 850237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner // Other cases are autogenerated. 851237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner break; 852047b952e298352fe6feffedf02e359601133f465Chris Lattner } 853047b952e298352fe6feffedf02e359601133f465Chris Lattner case ISD::UDIV: { 854047b952e298352fe6feffedf02e359601133f465Chris Lattner // If this is a divide by constant, we can emit code using some magic 855047b952e298352fe6feffedf02e359601133f465Chris Lattner // constants to implement it as a multiply instead. 856047b952e298352fe6feffedf02e359601133f465Chris Lattner unsigned Imm; 857a9317ed361847c96989664b84ae8502a783a9956Chris Lattner if (isIntImmediate(N->getOperand(1), Imm) && Imm) { 858047b952e298352fe6feffedf02e359601133f465Chris Lattner SDOperand Result = Select(BuildUDIVSequence(N)); 859d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op] = Result; 860d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner return Result; 861047b952e298352fe6feffedf02e359601133f465Chris Lattner } 862047b952e298352fe6feffedf02e359601133f465Chris Lattner 863237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner // Other cases are autogenerated. 864237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner break; 865047b952e298352fe6feffedf02e359601133f465Chris Lattner } 866cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman case ISD::AND: { 867a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman unsigned Imm; 868cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // If this is an and of a value rotated between 0 and 31 bits and then and'd 869cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // with a mask, emit rlwinm 870cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (isIntImmediate(N->getOperand(1), Imm) && (isShiftedMask_32(Imm) || 871cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman isShiftedMask_32(~Imm))) { 872cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman SDOperand Val; 873a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman unsigned SH, MB, ME; 874cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (isRotateAndMask(N->getOperand(0).Val, Imm, false, SH, MB, ME)) { 875cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Val = Select(N->getOperand(0).getOperand(0)); 876cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } else { 877cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Val = Select(N->getOperand(0)); 878cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman isRunOfOnes(Imm, MB, ME); 879cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman SH = 0; 880cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 8812bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Val, getI32Imm(SH), 882cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman getI32Imm(MB), getI32Imm(ME)); 88325dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 884cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 885237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner 886237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner // Other cases are autogenerated. 887237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner break; 888cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 88902b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman case ISD::OR: 890d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner if (SDNode *I = SelectBitfieldInsert(N)) 891d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner return CodeGenMap[Op] = SDOperand(I, 0); 892d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner 89302b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman if (SDNode *I = SelectIntImmediateExpr(N->getOperand(0), 89402b88a4586704f34bc65afca3348453eae69d1d3Nate Begeman N->getOperand(1), 895d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner PPC::ORIS, PPC::ORI)) 896d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner return CodeGenMap[Op] = SDOperand(I, 0); 897d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner 898237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner // Other cases are autogenerated. 899237733e9335f4d2bb16a818ab184929e12fae407Chris Lattner break; 900c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman case ISD::SHL: { 901c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman unsigned Imm, SH, MB, ME; 902c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman if (isOpcWithIntImmediate(N->getOperand(0).Val, ISD::AND, Imm) && 903c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman isRotateAndMask(N, Imm, true, SH, MB, ME)) 9042bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, 905c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(0).getOperand(0)), 906c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(SH), getI32Imm(MB), getI32Imm(ME)); 907c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else if (isIntImmediate(N->getOperand(1), Imm)) 9082bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Select(N->getOperand(0)), 909c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(Imm), getI32Imm(0), getI32Imm(31-Imm)); 910c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else 9112bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::SLW, MVT::i32, Select(N->getOperand(0)), 912c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(1))); 91325dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 914c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman } 915c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman case ISD::SRL: { 916c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman unsigned Imm, SH, MB, ME; 917c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman if (isOpcWithIntImmediate(N->getOperand(0).Val, ISD::AND, Imm) && 918c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman isRotateAndMask(N, Imm, true, SH, MB, ME)) 9192bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, 920c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(0).getOperand(0)), 921c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman getI32Imm(SH & 0x1F), getI32Imm(MB), getI32Imm(ME)); 922c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else if (isIntImmediate(N->getOperand(1), Imm)) 9232bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Select(N->getOperand(0)), 924c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman getI32Imm((32-Imm) & 0x1F), getI32Imm(Imm), 925c09eeec0ebc378644bafd04916e5efafa7d98152Nate Begeman getI32Imm(31)); 926c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else 9272bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::SRW, MVT::i32, Select(N->getOperand(0)), 928c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(1))); 92925dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 930c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman } 931c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman case ISD::SRA: { 932c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman unsigned Imm, SH, MB, ME; 933c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman if (isOpcWithIntImmediate(N->getOperand(0).Val, ISD::AND, Imm) && 934c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman isRotateAndMask(N, Imm, true, SH, MB, ME)) 9352bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, 936c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(0).getOperand(0)), 937c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(SH), getI32Imm(MB), getI32Imm(ME)); 938c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else if (isIntImmediate(N->getOperand(1), Imm)) 9392bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::SRAWI, MVT::i32, Select(N->getOperand(0)), 940c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(Imm)); 941c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else 9422bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::SRAW, MVT::i32, Select(N->getOperand(0)), 943c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(1))); 94425dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 945c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman } 946d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner case ISD::FMUL: { 947d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner unsigned Opc = N->getValueType(0) == MVT::f32 ? PPC::FMULS : PPC::FMUL; 948d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner CurDAG->SelectNodeTo(N, Opc, N->getValueType(0), Select(N->getOperand(0)), 949d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner Select(N->getOperand(1))); 950d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner return SDOperand(N, 0); 951d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner } 952d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner case ISD::FDIV: { 953d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner unsigned Opc = N->getValueType(0) == MVT::f32 ? PPC::FDIVS : PPC::FDIV; 954d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner CurDAG->SelectNodeTo(N, Opc, N->getValueType(0), Select(N->getOperand(0)), 955d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner Select(N->getOperand(1))); 956d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner return SDOperand(N, 0); 957d8ead9e25021d5c07b222f8550b621b4f31c874fChris Lattner } 958305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::FABS: 9592bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::FABS, N->getValueType(0), 9606a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman Select(N->getOperand(0))); 96125dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 9628f838720ad578349e7929b32fa9117aa317bb3a5Chris Lattner case ISD::FP_EXTEND: 963305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman assert(MVT::f64 == N->getValueType(0) && 964305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman MVT::f32 == N->getOperand(0).getValueType() && "Illegal FP_EXTEND"); 9658f838720ad578349e7929b32fa9117aa317bb3a5Chris Lattner // We need to emit an FMR to make sure that the result has the right value 9668f838720ad578349e7929b32fa9117aa317bb3a5Chris Lattner // type. 9678f838720ad578349e7929b32fa9117aa317bb3a5Chris Lattner CurDAG->SelectNodeTo(N, PPC::FMR, MVT::f64, Select(N->getOperand(0))); 96825dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 969305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::FP_ROUND: 970305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman assert(MVT::f32 == N->getValueType(0) && 971305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman MVT::f64 == N->getOperand(0).getValueType() && "Illegal FP_ROUND"); 9722bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::FRSP, MVT::f32, Select(N->getOperand(0))); 97325dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 97426653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case ISD::FNEG: { 97526653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman SDOperand Val = Select(N->getOperand(0)); 97626653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman MVT::ValueType Ty = N->getValueType(0); 97726653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman if (Val.Val->hasOneUse()) { 97826653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman unsigned Opc; 979528f58e813ec4929a7997afbf121eb54e8bacf4cChris Lattner switch (Val.isTargetOpcode() ? Val.getTargetOpcode() : 0) { 98026653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman default: Opc = 0; break; 98126653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FABS: Opc = PPC::FNABS; break; 98226653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FMADD: Opc = PPC::FNMADD; break; 98326653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FMADDS: Opc = PPC::FNMADDS; break; 98426653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FMSUB: Opc = PPC::FNMSUB; break; 98526653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FMSUBS: Opc = PPC::FNMSUBS; break; 98626653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 98726653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman // If we inverted the opcode, then emit the new instruction with the 98826653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman // inverted opcode and the original instruction's operands. Otherwise, 98926653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman // fall through and generate a fneg instruction. 99026653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman if (Opc) { 99126653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman if (PPC::FNABS == Opc) 9922bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Opc, Ty, Val.getOperand(0)); 99326653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman else 9942bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Opc, Ty, Val.getOperand(0), 99526653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman Val.getOperand(1), Val.getOperand(2)); 99625dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 99726653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 99826653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 9992bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::FNEG, Ty, Val); 100025dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 100126653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 10026a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman case ISD::FSQRT: { 10036a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman MVT::ValueType Ty = N->getValueType(0); 10042bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Ty == MVT::f64 ? PPC::FSQRT : PPC::FSQRTS, Ty, 10056a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman Select(N->getOperand(0))); 100625dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 10076a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman } 1008a9317ed361847c96989664b84ae8502a783a9956Chris Lattner 1009a9317ed361847c96989664b84ae8502a783a9956Chris Lattner case ISD::ADD_PARTS: { 1010a9317ed361847c96989664b84ae8502a783a9956Chris Lattner SDOperand LHSL = Select(N->getOperand(0)); 1011a9317ed361847c96989664b84ae8502a783a9956Chris Lattner SDOperand LHSH = Select(N->getOperand(1)); 1012a9317ed361847c96989664b84ae8502a783a9956Chris Lattner 1013a9317ed361847c96989664b84ae8502a783a9956Chris Lattner unsigned Imm; 101495e0682a4276fb9f5978039dc4bae675bdf66ee3Chris Lattner bool ME = false, ZE = false; 1015a9317ed361847c96989664b84ae8502a783a9956Chris Lattner if (isIntImmediate(N->getOperand(3), Imm)) { 1016a9317ed361847c96989664b84ae8502a783a9956Chris Lattner ME = (signed)Imm == -1; 1017a9317ed361847c96989664b84ae8502a783a9956Chris Lattner ZE = Imm == 0; 1018a9317ed361847c96989664b84ae8502a783a9956Chris Lattner } 1019a9317ed361847c96989664b84ae8502a783a9956Chris Lattner 1020a9317ed361847c96989664b84ae8502a783a9956Chris Lattner std::vector<SDOperand> Result; 1021a9317ed361847c96989664b84ae8502a783a9956Chris Lattner SDOperand CarryFromLo; 1022a9317ed361847c96989664b84ae8502a783a9956Chris Lattner if (isIntImmediate(N->getOperand(2), Imm) && 1023a9317ed361847c96989664b84ae8502a783a9956Chris Lattner ((signed)Imm >= -32768 || (signed)Imm < 32768)) { 1024a9317ed361847c96989664b84ae8502a783a9956Chris Lattner // Codegen the low 32 bits of the add. Interestingly, there is no 1025a9317ed361847c96989664b84ae8502a783a9956Chris Lattner // shifted form of add immediate carrying. 1026a9317ed361847c96989664b84ae8502a783a9956Chris Lattner CarryFromLo = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag, 1027a9317ed361847c96989664b84ae8502a783a9956Chris Lattner LHSL, getI32Imm(Imm)); 1028a9317ed361847c96989664b84ae8502a783a9956Chris Lattner } else { 1029a9317ed361847c96989664b84ae8502a783a9956Chris Lattner CarryFromLo = CurDAG->getTargetNode(PPC::ADDC, MVT::i32, MVT::Flag, 1030a9317ed361847c96989664b84ae8502a783a9956Chris Lattner LHSL, Select(N->getOperand(2))); 1031a9317ed361847c96989664b84ae8502a783a9956Chris Lattner } 1032a9317ed361847c96989664b84ae8502a783a9956Chris Lattner CarryFromLo = CarryFromLo.getValue(1); 1033a9317ed361847c96989664b84ae8502a783a9956Chris Lattner 1034a9317ed361847c96989664b84ae8502a783a9956Chris Lattner // Codegen the high 32 bits, adding zero, minus one, or the full value 1035a9317ed361847c96989664b84ae8502a783a9956Chris Lattner // along with the carry flag produced by addc/addic. 1036a9317ed361847c96989664b84ae8502a783a9956Chris Lattner SDOperand ResultHi; 1037a9317ed361847c96989664b84ae8502a783a9956Chris Lattner if (ZE) 1038a9317ed361847c96989664b84ae8502a783a9956Chris Lattner ResultHi = CurDAG->getTargetNode(PPC::ADDZE, MVT::i32, LHSH, CarryFromLo); 1039a9317ed361847c96989664b84ae8502a783a9956Chris Lattner else if (ME) 1040a9317ed361847c96989664b84ae8502a783a9956Chris Lattner ResultHi = CurDAG->getTargetNode(PPC::ADDME, MVT::i32, LHSH, CarryFromLo); 1041a9317ed361847c96989664b84ae8502a783a9956Chris Lattner else 1042a9317ed361847c96989664b84ae8502a783a9956Chris Lattner ResultHi = CurDAG->getTargetNode(PPC::ADDE, MVT::i32, LHSH, 1043a9317ed361847c96989664b84ae8502a783a9956Chris Lattner Select(N->getOperand(3)), CarryFromLo); 1044b20c318df02c19a5ba4ba89c76f2bf3daae64ad2Chris Lattner Result.push_back(CarryFromLo.getValue(0)); 104514b86c72a28a064373ac1670ed8ee62dab41e2f4Chris Lattner Result.push_back(ResultHi); 1046d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner 1047d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op.getValue(0)] = Result[0]; 1048d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op.getValue(1)] = Result[1]; 1049a9317ed361847c96989664b84ae8502a783a9956Chris Lattner return Result[Op.ResNo]; 1050a9317ed361847c96989664b84ae8502a783a9956Chris Lattner } 1051a9317ed361847c96989664b84ae8502a783a9956Chris Lattner case ISD::SUB_PARTS: { 1052a9317ed361847c96989664b84ae8502a783a9956Chris Lattner SDOperand LHSL = Select(N->getOperand(0)); 1053a9317ed361847c96989664b84ae8502a783a9956Chris Lattner SDOperand LHSH = Select(N->getOperand(1)); 1054a9317ed361847c96989664b84ae8502a783a9956Chris Lattner SDOperand RHSL = Select(N->getOperand(2)); 1055a9317ed361847c96989664b84ae8502a783a9956Chris Lattner SDOperand RHSH = Select(N->getOperand(3)); 1056a9317ed361847c96989664b84ae8502a783a9956Chris Lattner 1057a9317ed361847c96989664b84ae8502a783a9956Chris Lattner std::vector<SDOperand> Result; 1058a9317ed361847c96989664b84ae8502a783a9956Chris Lattner Result.push_back(CurDAG->getTargetNode(PPC::SUBFC, MVT::i32, MVT::Flag, 1059a9317ed361847c96989664b84ae8502a783a9956Chris Lattner RHSL, LHSL)); 1060a9317ed361847c96989664b84ae8502a783a9956Chris Lattner Result.push_back(CurDAG->getTargetNode(PPC::SUBFE, MVT::i32, RHSH, LHSH, 1061a9317ed361847c96989664b84ae8502a783a9956Chris Lattner Result[0].getValue(1))); 1062d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op.getValue(0)] = Result[0]; 1063d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op.getValue(1)] = Result[1]; 1064a9317ed361847c96989664b84ae8502a783a9956Chris Lattner return Result[Op.ResNo]; 1065a9317ed361847c96989664b84ae8502a783a9956Chris Lattner } 1066a9317ed361847c96989664b84ae8502a783a9956Chris Lattner 10679944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case ISD::LOAD: 10689944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case ISD::EXTLOAD: 10699944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case ISD::ZEXTLOAD: 10709944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case ISD::SEXTLOAD: { 10719944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner SDOperand Op1, Op2; 10729944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner bool isIdx = SelectAddr(N->getOperand(1), Op1, Op2); 10739944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner 10749944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner MVT::ValueType TypeBeingLoaded = (N->getOpcode() == ISD::LOAD) ? 10759944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner N->getValueType(0) : cast<VTSDNode>(N->getOperand(3))->getVT(); 10769944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner unsigned Opc; 10779944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner switch (TypeBeingLoaded) { 10789944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner default: N->dump(); assert(0 && "Cannot load this type!"); 10799944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case MVT::i1: 10809944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case MVT::i8: Opc = isIdx ? PPC::LBZX : PPC::LBZ; break; 10819944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case MVT::i16: 10829944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner if (N->getOpcode() == ISD::SEXTLOAD) { // SEXT load? 10839944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Opc = isIdx ? PPC::LHAX : PPC::LHA; 10849944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } else { 10859944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Opc = isIdx ? PPC::LHZX : PPC::LHZ; 10869944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } 10879944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner break; 10889944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case MVT::i32: Opc = isIdx ? PPC::LWZX : PPC::LWZ; break; 10899944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case MVT::f32: Opc = isIdx ? PPC::LFSX : PPC::LFS; break; 10909944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner case MVT::f64: Opc = isIdx ? PPC::LFDX : PPC::LFD; break; 10919944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } 10929944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner 10932bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Opc, N->getValueType(0), MVT::Other, 10949944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner Op1, Op2, Select(N->getOperand(0))); 109525dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, Op.ResNo); 10969944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner } 10979944b76cfe74981d2c41c8237d25267ba0c467c7Chris Lattner 1098f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner case ISD::TRUNCSTORE: 1099f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner case ISD::STORE: { 1100f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner SDOperand AddrOp1, AddrOp2; 1101f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner bool isIdx = SelectAddr(N->getOperand(2), AddrOp1, AddrOp2); 1102f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner 1103f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner unsigned Opc; 1104f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner if (N->getOpcode() == ISD::STORE) { 1105f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner switch (N->getOperand(1).getValueType()) { 1106f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner default: assert(0 && "unknown Type in store"); 1107f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner case MVT::i32: Opc = isIdx ? PPC::STWX : PPC::STW; break; 1108f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner case MVT::f64: Opc = isIdx ? PPC::STFDX : PPC::STFD; break; 1109f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner case MVT::f32: Opc = isIdx ? PPC::STFSX : PPC::STFS; break; 1110f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner } 1111f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner } else { //ISD::TRUNCSTORE 1112f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner switch(cast<VTSDNode>(N->getOperand(4))->getVT()) { 1113f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner default: assert(0 && "unknown Type in store"); 1114f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner case MVT::i8: Opc = isIdx ? PPC::STBX : PPC::STB; break; 1115f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner case MVT::i16: Opc = isIdx ? PPC::STHX : PPC::STH; break; 1116f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner } 1117f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner } 1118fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 11192bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Opc, MVT::Other, Select(N->getOperand(1)), 1120f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner AddrOp1, AddrOp2, Select(N->getOperand(0))); 112125dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 1122a2590c5b3eaa24002e3f83f146f0e5b6c95a89c8Chris Lattner } 112364906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner 112464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETCC: { 112564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner unsigned Imm; 112664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner ISD::CondCode CC = cast<CondCodeSDNode>(N->getOperand(2))->get(); 112764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner if (isIntImmediate(N->getOperand(1), Imm)) { 112864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner // We can codegen setcc op, imm very efficiently compared to a brcond. 112964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner // Check for those cases here. 113064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner // setcc op, 0 113164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner if (Imm == 0) { 113264906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner SDOperand Op = Select(N->getOperand(0)); 113364906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner switch (CC) { 113464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner default: assert(0 && "Unhandled SetCC condition"); abort(); 113564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETEQ: 113664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner Op = CurDAG->getTargetNode(PPC::CNTLZW, MVT::i32, Op); 11372bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Op, getI32Imm(27), 113864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(5), getI32Imm(31)); 113964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner break; 114064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETNE: { 114164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner SDOperand AD = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag, 114264906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner Op, getI32Imm(~0U)); 11432bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::SUBFE, MVT::i32, AD, Op, AD.getValue(1)); 114464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner break; 114564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 114664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETLT: 11472bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Op, getI32Imm(1), 114864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(31), getI32Imm(31)); 114964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner break; 115064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETGT: { 115164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner SDOperand T = CurDAG->getTargetNode(PPC::NEG, MVT::i32, Op); 115264906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner T = CurDAG->getTargetNode(PPC::ANDC, MVT::i32, T, Op);; 11532bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, T, getI32Imm(1), 115464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(31), getI32Imm(31)); 115564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner break; 115664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 115764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 115825dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 115964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } else if (Imm == ~0U) { // setcc op, -1 116064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner SDOperand Op = Select(N->getOperand(0)); 116164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner switch (CC) { 116264906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner default: assert(0 && "Unhandled SetCC condition"); abort(); 116364906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETEQ: 116464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner Op = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag, 116564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner Op, getI32Imm(1)); 11662bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::ADDZE, MVT::i32, 116764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner CurDAG->getTargetNode(PPC::LI, MVT::i32, 116864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(0)), 116964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner Op.getValue(1)); 117064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner break; 117164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETNE: { 117264906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner Op = CurDAG->getTargetNode(PPC::NOR, MVT::i32, Op, Op); 11738bbcc20a9dccd258d5977d1d99520367b9ca9e7eChris Lattner SDOperand AD = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag, 11748bbcc20a9dccd258d5977d1d99520367b9ca9e7eChris Lattner Op, getI32Imm(~0U)); 11752bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::SUBFE, MVT::i32, AD, Op, AD.getValue(1)); 117664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner break; 117764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 117864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETLT: { 117964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner SDOperand AD = CurDAG->getTargetNode(PPC::ADDI, MVT::i32, Op, 118064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(1)); 118164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner SDOperand AN = CurDAG->getTargetNode(PPC::AND, MVT::i32, AD, Op); 11822bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, AN, getI32Imm(1), 118364906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(31), getI32Imm(31)); 118464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner break; 118564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 118664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner case ISD::SETGT: 118764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner Op = CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, Op, getI32Imm(1), 118864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(31), getI32Imm(31)); 11892bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::XORI, MVT::i32, Op, getI32Imm(1)); 119064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner break; 119164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 119225dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 119364906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 119464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 119564906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner 119664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner bool Inv; 119764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner unsigned Idx = getCRIdxForSetCC(CC, Inv); 119850ff55c2c7909818165e51bbdc103a05b143dcb1Chris Lattner SDOperand CCReg = SelectCC(N->getOperand(0), N->getOperand(1), CC); 119964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner SDOperand IntCR; 1200957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner 1201957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner // Force the ccreg into CR7. 1202957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner SDOperand CR7Reg = CurDAG->getRegister(PPC::CR7, MVT::i32); 1203957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner 1204957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner std::vector<MVT::ValueType> VTs; 1205957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner VTs.push_back(MVT::Other); 1206957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner VTs.push_back(MVT::Flag); // NONSTANDARD CopyToReg node: defines a flag 1207957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner std::vector<SDOperand> Ops; 1208957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner Ops.push_back(CurDAG->getEntryNode()); 1209957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner Ops.push_back(CR7Reg); 1210957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner Ops.push_back(CCReg); 1211957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner CCReg = CurDAG->getNode(ISD::CopyToReg, VTs, Ops).getValue(1); 1212957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner 1213957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner if (TLI.getTargetMachine().getSubtarget<PPCSubtarget>().isGigaProcessor()) 1214957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner IntCR = CurDAG->getTargetNode(PPC::MFOCRF, MVT::i32, CR7Reg, CCReg); 1215957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner else 1216957fcfbd8935b2973376167861a53e4a9220aefcChris Lattner IntCR = CurDAG->getTargetNode(PPC::MFCR, MVT::i32, CCReg); 121764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner 121864906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner if (!Inv) { 12192bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, IntCR, 122064906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(32-(3-Idx)), getI32Imm(31), getI32Imm(31)); 122164906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } else { 122264906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner SDOperand Tmp = 122364906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, IntCR, 122464906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner getI32Imm(32-(3-Idx)), getI32Imm(31),getI32Imm(31)); 12252bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::XORI, MVT::i32, Tmp, getI32Imm(1)); 122664906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 122764906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner 122825dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 122964906a06b3d1cafec41c6b562f0f8130724decf6Chris Lattner } 1230a2590c5b3eaa24002e3f83f146f0e5b6c95a89c8Chris Lattner 123113794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner case ISD::SELECT_CC: { 123213794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner ISD::CondCode CC = cast<CondCodeSDNode>(N->getOperand(4))->get(); 123313794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner 123413794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner // handle the setcc cases here. select_cc lhs, 0, 1, 0, cc 123513794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner if (ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N->getOperand(1))) 123613794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner if (ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N->getOperand(2))) 123713794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner if (ConstantSDNode *N3C = dyn_cast<ConstantSDNode>(N->getOperand(3))) 123813794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner if (N1C->isNullValue() && N3C->isNullValue() && 123913794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner N2C->getValue() == 1ULL && CC == ISD::SETNE) { 124013794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner SDOperand LHS = Select(N->getOperand(0)); 124113794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner SDOperand Tmp = 124213794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag, 124313794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner LHS, getI32Imm(~0U)); 124413794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner CurDAG->SelectNodeTo(N, PPC::SUBFE, MVT::i32, Tmp, LHS, 124513794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner Tmp.getValue(1)); 124625dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 124713794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner } 12488a2d3ca7dff8f37ee0f1fc0042f47c194045183dChris Lattner 124950ff55c2c7909818165e51bbdc103a05b143dcb1Chris Lattner SDOperand CCReg = SelectCC(N->getOperand(0), N->getOperand(1), CC); 12508a2d3ca7dff8f37ee0f1fc0042f47c194045183dChris Lattner unsigned BROpc = getBCCForSetCC(CC); 12518a2d3ca7dff8f37ee0f1fc0042f47c194045183dChris Lattner 12528a2d3ca7dff8f37ee0f1fc0042f47c194045183dChris Lattner bool isFP = MVT::isFloatingPoint(N->getValueType(0)); 12538a2d3ca7dff8f37ee0f1fc0042f47c194045183dChris Lattner unsigned SelectCCOp = isFP ? PPC::SELECT_CC_FP : PPC::SELECT_CC_Int; 12548a2d3ca7dff8f37ee0f1fc0042f47c194045183dChris Lattner CurDAG->SelectNodeTo(N, SelectCCOp, N->getValueType(0), CCReg, 12558a2d3ca7dff8f37ee0f1fc0042f47c194045183dChris Lattner Select(N->getOperand(2)), Select(N->getOperand(3)), 12568a2d3ca7dff8f37ee0f1fc0042f47c194045183dChris Lattner getI32Imm(BROpc)); 125725dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 125813794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner } 125913794f5d01317d76ec698b43bdf1c35eea57eae5Chris Lattner 1260a2590c5b3eaa24002e3f83f146f0e5b6c95a89c8Chris Lattner case ISD::CALLSEQ_START: 1261a2590c5b3eaa24002e3f83f146f0e5b6c95a89c8Chris Lattner case ISD::CALLSEQ_END: { 1262a2590c5b3eaa24002e3f83f146f0e5b6c95a89c8Chris Lattner unsigned Amt = cast<ConstantSDNode>(N->getOperand(1))->getValue(); 1263a2590c5b3eaa24002e3f83f146f0e5b6c95a89c8Chris Lattner unsigned Opc = N->getOpcode() == ISD::CALLSEQ_START ? 1264a2590c5b3eaa24002e3f83f146f0e5b6c95a89c8Chris Lattner PPC::ADJCALLSTACKDOWN : PPC::ADJCALLSTACKUP; 12652bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, Opc, MVT::Other, 1266fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner getI32Imm(Amt), Select(N->getOperand(0))); 126725dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 1268f7f22555053a8992b2f97db77a62458ff8a69d7fChris Lattner } 1269fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner case ISD::CALL: 1270fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner case ISD::TAILCALL: { 1271fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner SDOperand Chain = Select(N->getOperand(0)); 1272fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1273fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner unsigned CallOpcode; 1274fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner std::vector<SDOperand> CallOperands; 1275fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1276fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner if (GlobalAddressSDNode *GASD = 1277fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner dyn_cast<GlobalAddressSDNode>(N->getOperand(1))) { 1278fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallOpcode = PPC::CALLpcrel; 1279fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallOperands.push_back(CurDAG->getTargetGlobalAddress(GASD->getGlobal(), 1280fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner MVT::i32)); 1281fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner } else if (ExternalSymbolSDNode *ESSDN = 1282fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner dyn_cast<ExternalSymbolSDNode>(N->getOperand(1))) { 1283fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallOpcode = PPC::CALLpcrel; 1284fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallOperands.push_back(N->getOperand(1)); 1285fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner } else { 1286fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner // Copy the callee address into the CTR register. 1287fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner SDOperand Callee = Select(N->getOperand(1)); 1288fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner Chain = CurDAG->getTargetNode(PPC::MTCTR, MVT::Other, Callee, Chain); 1289fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1290fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner // Copy the callee address into R12 on darwin. 1291fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner SDOperand R12 = CurDAG->getRegister(PPC::R12, MVT::i32); 12922a06a5ef363382479e74cae2d39f139e11f40225Chris Lattner Chain = CurDAG->getNode(ISD::CopyToReg, MVT::Other, Chain, R12, Callee); 1293fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1294fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallOperands.push_back(getI32Imm(20)); // Information to encode indcall 1295fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallOperands.push_back(getI32Imm(0)); // Information to encode indcall 1296fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallOperands.push_back(R12); 1297fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallOpcode = PPC::CALLindirect; 1298fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner } 1299fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1300fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner unsigned GPR_idx = 0, FPR_idx = 0; 1301fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner static const unsigned GPR[] = { 1302fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner PPC::R3, PPC::R4, PPC::R5, PPC::R6, 1303fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner PPC::R7, PPC::R8, PPC::R9, PPC::R10, 1304fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner }; 1305fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner static const unsigned FPR[] = { 1306fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner PPC::F1, PPC::F2, PPC::F3, PPC::F4, PPC::F5, PPC::F6, PPC::F7, 1307fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner PPC::F8, PPC::F9, PPC::F10, PPC::F11, PPC::F12, PPC::F13 1308fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner }; 1309fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 131031ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner SDOperand InFlag; // Null incoming flag value. 131131ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner 13127107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner for (unsigned i = 2, e = N->getNumOperands(); i != e; ++i) { 13137107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner unsigned DestReg = 0; 1314eb80fe8ff684121c8130db716fe4a7cb5ca3ac0dChris Lattner MVT::ValueType RegTy = N->getOperand(i).getValueType(); 1315eb80fe8ff684121c8130db716fe4a7cb5ca3ac0dChris Lattner if (RegTy == MVT::i32) { 13167107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner assert(GPR_idx < 8 && "Too many int args"); 13177107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner DestReg = GPR[GPR_idx++]; 13187107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner } else { 13197107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner assert(MVT::isFloatingPoint(N->getOperand(i).getValueType()) && 13207107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner "Unpromoted integer arg?"); 13217107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner assert(FPR_idx < 13 && "Too many fp args"); 13227107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner DestReg = FPR[FPR_idx++]; 13237107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner } 13247107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner 1325fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner if (N->getOperand(i).getOpcode() != ISD::UNDEF) { 13262ea0c66ae56b3254698c960f7b89b4eaed6bd83fChris Lattner SDOperand Val = Select(N->getOperand(i)); 13272ea0c66ae56b3254698c960f7b89b4eaed6bd83fChris Lattner Chain = CurDAG->getCopyToReg(Chain, DestReg, Val, InFlag); 132831ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner InFlag = Chain.getValue(1); 132931ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner CallOperands.push_back(CurDAG->getRegister(DestReg, RegTy)); 1330fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner } 13317107c10501e62d2e3ed34b349585e616b8f6da3eChris Lattner } 1332fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1333fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner // Finally, once everything is in registers to pass to the call, emit the 1334fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner // call itself. 133531ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner if (InFlag.Val) 133631ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner CallOperands.push_back(InFlag); // Strong dep on register copies. 133731ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner else 133831ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner CallOperands.push_back(Chain); // Weak dep on whatever occurs before 133931ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner Chain = CurDAG->getTargetNode(CallOpcode, MVT::Other, MVT::Flag, 134031ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner CallOperands); 1341fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1342fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner std::vector<SDOperand> CallResults; 1343fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1344fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner // If the call has results, copy the values out of the ret val registers. 1345fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner switch (N->getValueType(0)) { 1346fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner default: assert(0 && "Unexpected ret value!"); 1347fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner case MVT::Other: break; 1348fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner case MVT::i32: 1349fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner if (N->getValueType(1) == MVT::i32) { 135031ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner Chain = CurDAG->getCopyFromReg(Chain, PPC::R4, MVT::i32, 135131ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner Chain.getValue(1)).getValue(1); 1352fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallResults.push_back(Chain.getValue(0)); 135331ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner Chain = CurDAG->getCopyFromReg(Chain, PPC::R3, MVT::i32, 1354242f2557cc242b2d132e5a3e6c3a98961a7e4349Jim Laskey Chain.getValue(2)).getValue(1); 1355fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallResults.push_back(Chain.getValue(0)); 1356fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner } else { 135731ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner Chain = CurDAG->getCopyFromReg(Chain, PPC::R3, MVT::i32, 135831ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner Chain.getValue(1)).getValue(1); 1359fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallResults.push_back(Chain.getValue(0)); 1360fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner } 1361fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner break; 1362fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner case MVT::f32: 1363fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner case MVT::f64: 1364eb80fe8ff684121c8130db716fe4a7cb5ca3ac0dChris Lattner Chain = CurDAG->getCopyFromReg(Chain, PPC::F1, N->getValueType(0), 136531ce12f4f57db4375392e9129772773bed1bd4ccChris Lattner Chain.getValue(1)).getValue(1); 1366eb80fe8ff684121c8130db716fe4a7cb5ca3ac0dChris Lattner CallResults.push_back(Chain.getValue(0)); 1367fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner break; 1368fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner } 1369fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner 1370fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner CallResults.push_back(Chain); 1371d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner for (unsigned i = 0, e = CallResults.size(); i != e; ++i) 1372d3d2cf52bbb776941bf8cb03d8732ff3f407cdeaChris Lattner CodeGenMap[Op.getValue(i)] = CallResults[i]; 1373fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner return CallResults[Op.ResNo]; 1374fb0c964364ba9f2c54ea28e0b7f404e18f7327b4Chris Lattner } 1375a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::RET: { 1376a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Chain = Select(N->getOperand(0)); // Token chain. 1377a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 13787a49fdcd1136c26d9c60b19c087ca9d578cc9834Chris Lattner if (N->getNumOperands() == 2) { 1379a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Val = Select(N->getOperand(1)); 1380eb80fe8ff684121c8130db716fe4a7cb5ca3ac0dChris Lattner if (N->getOperand(1).getValueType() == MVT::i32) { 1381a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Chain = CurDAG->getCopyToReg(Chain, PPC::R3, Val); 1382eb80fe8ff684121c8130db716fe4a7cb5ca3ac0dChris Lattner } else { 1383eb80fe8ff684121c8130db716fe4a7cb5ca3ac0dChris Lattner assert(MVT::isFloatingPoint(N->getOperand(1).getValueType())); 1384eb80fe8ff684121c8130db716fe4a7cb5ca3ac0dChris Lattner Chain = CurDAG->getCopyToReg(Chain, PPC::F1, Val); 1385a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 13867a49fdcd1136c26d9c60b19c087ca9d578cc9834Chris Lattner } else if (N->getNumOperands() > 1) { 13877a49fdcd1136c26d9c60b19c087ca9d578cc9834Chris Lattner assert(N->getOperand(1).getValueType() == MVT::i32 && 13887a49fdcd1136c26d9c60b19c087ca9d578cc9834Chris Lattner N->getOperand(2).getValueType() == MVT::i32 && 13897a49fdcd1136c26d9c60b19c087ca9d578cc9834Chris Lattner N->getNumOperands() == 3 && "Unknown two-register ret value!"); 13907a49fdcd1136c26d9c60b19c087ca9d578cc9834Chris Lattner Chain = CurDAG->getCopyToReg(Chain, PPC::R4, Select(N->getOperand(1))); 13917a49fdcd1136c26d9c60b19c087ca9d578cc9834Chris Lattner Chain = CurDAG->getCopyToReg(Chain, PPC::R3, Select(N->getOperand(2))); 1392a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 1393a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 1394a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Finally, select this to a blr (return) instruction. 13952bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::BLR, MVT::Other, Chain); 139625dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 1397a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 139889532c7db03543402dd5376172b87233575beb44Chris Lattner case ISD::BR: 13992bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::B, MVT::Other, N->getOperand(1), 140089532c7db03543402dd5376172b87233575beb44Chris Lattner Select(N->getOperand(0))); 140125dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 14022fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::BR_CC: 14032fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner case ISD::BRTWOWAY_CC: { 14042fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner SDOperand Chain = Select(N->getOperand(0)); 14052fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner MachineBasicBlock *Dest = 14062fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner cast<BasicBlockSDNode>(N->getOperand(4))->getBasicBlock(); 14072fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner ISD::CondCode CC = cast<CondCodeSDNode>(N->getOperand(1))->get(); 14082fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner SDOperand CondCode = SelectCC(N->getOperand(2), N->getOperand(3), CC); 14092fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner unsigned Opc = getBCCForSetCC(CC); 14102fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner 14112fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // If this is a two way branch, then grab the fallthrough basic block 14122fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // argument and build a PowerPC branch pseudo-op, suitable for long branch 14132fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // conversion if necessary by the branch selection pass. Otherwise, emit a 14142fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // standard conditional branch. 14152fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner if (N->getOpcode() == ISD::BRTWOWAY_CC) { 14162fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner MachineBasicBlock *Fallthrough = 14172fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner cast<BasicBlockSDNode>(N->getOperand(5))->getBasicBlock(); 14182fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner SDOperand CB = CurDAG->getTargetNode(PPC::COND_BRANCH, MVT::Other, 14192fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner CondCode, getI32Imm(Opc), 14202fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner N->getOperand(4), N->getOperand(5), 14212fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner Chain); 14222bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::B, MVT::Other, N->getOperand(5), CB); 14232fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner } else { 14242fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // Iterate to the next basic block 14252fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner ilist<MachineBasicBlock>::iterator It = BB; 14262fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner ++It; 14272fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner 14282fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // If the fallthrough path is off the end of the function, which would be 14292fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // undefined behavior, set it to be the same as the current block because 14302fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // we have nothing better to set it to, and leaving it alone will cause 14312fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner // the PowerPC Branch Selection pass to crash. 14322fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner if (It == BB->getParent()->end()) It = Dest; 14332bb06cdf27905cf95bd39e4120f1ad57c68ac73eChris Lattner CurDAG->SelectNodeTo(N, PPC::COND_BRANCH, MVT::Other, CondCode, 14342fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner getI32Imm(Opc), N->getOperand(4), 14352fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner CurDAG->getBasicBlock(It), Chain); 14362fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner } 143725dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner return SDOperand(N, 0); 14382fbb4579d6d6bbde8387283b78307c2ea477a312Chris Lattner } 1439a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 144025dae727f3b0c3511c17d7b7a8d476b1eed04f20Chris Lattner 144119c0907ba1c11c81dc231cf7b4143fdaf03466e4Chris Lattner return SelectCode(Op); 1442a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 1443a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 1444a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 1445a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner/// createPPC32ISelDag - This pass converts a legalized DAG into a 1446a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner/// PowerPC-specific DAG, ready for instruction scheduling. 1447a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner/// 1448a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris LattnerFunctionPass *llvm::createPPC32ISelDag(TargetMachine &TM) { 1449a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return new PPC32DAGToDAGISel(TM); 1450a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 1451a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 1452