PPCInstrInfo.cpp revision 894018228b0e0bdbd7aa7e8f47d4a9458789ca82
1894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman//===- PPCInstrInfo.cpp - PowerPC32 Instruction Information -----*- C++ -*-===// 2894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 3894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// The LLVM Compiler Infrastructure 4894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 5894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// This file is distributed under the University of Illinois Open Source 6894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// License. See LICENSE.TXT for details. 7894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 8894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman//===----------------------------------------------------------------------===// 9894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 10894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// This file contains the PowerPC implementation of the TargetInstrInfo class. 11894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// 12894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman//===----------------------------------------------------------------------===// 13894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 14894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "PPCInstrInfo.h" 15894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "PPCInstrBuilder.h" 16894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "PPCMachineFunctionInfo.h" 17894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "PPCPredicates.h" 18894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "PPCGenInstrInfo.inc" 19894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "PPCTargetMachine.h" 20894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/ADT/STLExtras.h" 21894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/CodeGen/MachineFrameInfo.h" 22894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/CodeGen/MachineInstrBuilder.h" 23894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/CodeGen/MachineMemOperand.h" 24894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/CodeGen/MachineRegisterInfo.h" 25894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/CodeGen/PseudoSourceValue.h" 26894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/Support/CommandLine.h" 27894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/Support/ErrorHandling.h" 28894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/Support/raw_ostream.h" 29894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman#include "llvm/MC/MCAsmInfo.h" 30894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 31894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumannamespace llvm { 32894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanextern cl::opt<bool> EnablePPC32RS; // FIXME (64-bit): See PPCRegisterInfo.cpp. 33894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanextern cl::opt<bool> EnablePPC64RS; // FIXME (64-bit): See PPCRegisterInfo.cpp. 34894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 35894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 36894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanusing namespace llvm; 37894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 38894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPPCInstrInfo::PPCInstrInfo(PPCTargetMachine &tm) 39894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman : TargetInstrInfoImpl(PPCInsts, array_lengthof(PPCInsts)), TM(tm), 40894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman RI(*TM.getSubtargetImpl(), *this) {} 41894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 42894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanunsigned PPCInstrInfo::isLoadFromStackSlot(const MachineInstr *MI, 43894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman int &FrameIndex) const { 44894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman switch (MI->getOpcode()) { 45894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman default: break; 46894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::LD: 47894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::LWZ: 48894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::LFS: 49894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::LFD: 50894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (MI->getOperand(1).isImm() && !MI->getOperand(1).getImm() && 51894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(2).isFI()) { 52894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIndex = MI->getOperand(2).getIndex(); 53894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return MI->getOperand(0).getReg(); 54894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 55894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman break; 56894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 57894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 0; 58894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 59894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 60894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanunsigned PPCInstrInfo::isStoreToStackSlot(const MachineInstr *MI, 61894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman int &FrameIndex) const { 62894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman switch (MI->getOpcode()) { 63894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman default: break; 64894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::STD: 65894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::STW: 66894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::STFS: 67894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::STFD: 68894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (MI->getOperand(1).isImm() && !MI->getOperand(1).getImm() && 69894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(2).isFI()) { 70894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIndex = MI->getOperand(2).getIndex(); 71894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return MI->getOperand(0).getReg(); 72894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 73894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman break; 74894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 75894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 0; 76894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 77894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 78894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// commuteInstruction - We can commute rlwimi instructions, but only if the 79894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// rotate amt is zero. We also have to munge the immediates a bit. 80894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanMachineInstr * 81894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPPCInstrInfo::commuteInstruction(MachineInstr *MI, bool NewMI) const { 82894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineFunction &MF = *MI->getParent()->getParent(); 83894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 84894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Normal instructions can be commuted the obvious way. 85894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (MI->getOpcode() != PPC::RLWIMI) 86894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return TargetInstrInfoImpl::commuteInstruction(MI, NewMI); 87894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 88894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Cannot commute if it has a non-zero rotate count. 89894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (MI->getOperand(3).getImm() != 0) 90894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 0; 91894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 92894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If we have a zero rotate count, we have: 93894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // M = mask(MB,ME) 94894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Op0 = (Op1 & ~M) | (Op2 & M) 95894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Change this to: 96894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // M = mask((ME+1)&31, (MB-1)&31) 97894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Op0 = (Op2 & ~M) | (Op1 & M) 98894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 99894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Swap op1/op2 100894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned Reg0 = MI->getOperand(0).getReg(); 101894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned Reg1 = MI->getOperand(1).getReg(); 102894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned Reg2 = MI->getOperand(2).getReg(); 103894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman bool Reg1IsKill = MI->getOperand(1).isKill(); 104894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman bool Reg2IsKill = MI->getOperand(2).isKill(); 105894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman bool ChangeReg0 = false; 106894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If machine instrs are no longer in two-address forms, update 107894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // destination register as well. 108894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (Reg0 == Reg1) { 109894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Must be two address instruction! 110894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman assert(MI->getDesc().getOperandConstraint(0, TOI::TIED_TO) && 111894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman "Expecting a two-address instruction!"); 112894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg2IsKill = false; 113894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman ChangeReg0 = true; 114894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 115894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 116894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Masks. 117894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned MB = MI->getOperand(4).getImm(); 118894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned ME = MI->getOperand(5).getImm(); 119894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 120894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (NewMI) { 121894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Create a new instruction. 122894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned Reg0 = ChangeReg0 ? Reg2 : MI->getOperand(0).getReg(); 123894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman bool Reg0IsDead = MI->getOperand(0).isDead(); 124894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return BuildMI(MF, MI->getDebugLoc(), MI->getDesc()) 125894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(Reg0, RegState::Define | getDeadRegState(Reg0IsDead)) 126894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(Reg2, getKillRegState(Reg2IsKill)) 127894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(Reg1, getKillRegState(Reg1IsKill)) 128894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addImm((ME+1) & 31) 129894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addImm((MB-1) & 31); 130894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 131894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 132894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (ChangeReg0) 133894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(0).setReg(Reg2); 134894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(2).setReg(Reg1); 135894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(1).setReg(Reg2); 136894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(2).setIsKill(Reg1IsKill); 137894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(1).setIsKill(Reg2IsKill); 138894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 139894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Swap the mask around. 140894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(4).setImm((ME+1) & 31); 141894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MI->getOperand(5).setImm((MB-1) & 31); 142894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return MI; 143894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 144894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 145894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanvoid PPCInstrInfo::insertNoop(MachineBasicBlock &MBB, 146894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineBasicBlock::iterator MI) const { 147894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DebugLoc DL; 148894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman BuildMI(MBB, MI, DL, get(PPC::NOP)); 149894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 150894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 151894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 152894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman// Branch analysis. 153894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanbool PPCInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,MachineBasicBlock *&TBB, 154894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineBasicBlock *&FBB, 155894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SmallVectorImpl<MachineOperand> &Cond, 156894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman bool AllowModify) const { 157894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If the block has no terminators, it just falls into the block after it. 158894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineBasicBlock::iterator I = MBB.end(); 159894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I == MBB.begin()) 160894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 161894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman --I; 162894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman while (I->isDebugValue()) { 163894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I == MBB.begin()) 164894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 165894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman --I; 166894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 167894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (!isUnpredicatedTerminator(I)) 168894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 169894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 170894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Get the last instruction in the block. 171894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineInstr *LastInst = I; 172894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 173894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If there is only one terminator instruction, process it. 174894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I == MBB.begin() || !isUnpredicatedTerminator(--I)) { 175894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (LastInst->getOpcode() == PPC::B) { 176894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (!LastInst->getOperand(0).isMBB()) 177894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return true; 178894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman TBB = LastInst->getOperand(0).getMBB(); 179894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 180894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (LastInst->getOpcode() == PPC::BCC) { 181894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (!LastInst->getOperand(2).isMBB()) 182894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return true; 183894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Block ends with fall-through condbranch. 184894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman TBB = LastInst->getOperand(2).getMBB(); 185894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Cond.push_back(LastInst->getOperand(0)); 186894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Cond.push_back(LastInst->getOperand(1)); 187894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 188894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 189894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Otherwise, don't know what this is. 190894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return true; 191894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 192894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 193894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Get the instruction before it if it's a terminator. 194894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineInstr *SecondLastInst = I; 195894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 196894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If there are three terminators, we don't know what sort of block this is. 197894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (SecondLastInst && I != MBB.begin() && 198894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman isUnpredicatedTerminator(--I)) 199894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return true; 200894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 201894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If the block ends with PPC::B and PPC:BCC, handle it. 202894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (SecondLastInst->getOpcode() == PPC::BCC && 203894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman LastInst->getOpcode() == PPC::B) { 204894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (!SecondLastInst->getOperand(2).isMBB() || 205894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman !LastInst->getOperand(0).isMBB()) 206894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return true; 207894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman TBB = SecondLastInst->getOperand(2).getMBB(); 208894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Cond.push_back(SecondLastInst->getOperand(0)); 209894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Cond.push_back(SecondLastInst->getOperand(1)); 210894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FBB = LastInst->getOperand(0).getMBB(); 211894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 212894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 213894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 214894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If the block ends with two PPC:Bs, handle it. The second one is not 215894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // executed, so remove it. 216894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (SecondLastInst->getOpcode() == PPC::B && 217894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman LastInst->getOpcode() == PPC::B) { 218894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (!SecondLastInst->getOperand(0).isMBB()) 219894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return true; 220894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman TBB = SecondLastInst->getOperand(0).getMBB(); 221894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman I = LastInst; 222894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (AllowModify) 223894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman I->eraseFromParent(); 224894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 225894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 226894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 227894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Otherwise, can't handle this. 228894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return true; 229894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 230894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 231894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanunsigned PPCInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const { 232894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineBasicBlock::iterator I = MBB.end(); 233894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I == MBB.begin()) return 0; 234894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman --I; 235894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman while (I->isDebugValue()) { 236894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I == MBB.begin()) 237894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 0; 238894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman --I; 239894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 240894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I->getOpcode() != PPC::B && I->getOpcode() != PPC::BCC) 241894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 0; 242894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 243894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Remove the branch. 244894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman I->eraseFromParent(); 245894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 246894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman I = MBB.end(); 247894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 248894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I == MBB.begin()) return 1; 249894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman --I; 250894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (I->getOpcode() != PPC::BCC) 251894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 1; 252894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 253894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Remove the branch. 254894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman I->eraseFromParent(); 255894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 2; 256894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 257894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 258894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanunsigned 259894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPPCInstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, 260894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineBasicBlock *FBB, 261894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const SmallVectorImpl<MachineOperand> &Cond, 262894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DebugLoc DL) const { 263894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Shouldn't be a fall through. 264894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman assert(TBB && "InsertBranch must not be told to insert a fallthrough"); 265894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman assert((Cond.size() == 2 || Cond.size() == 0) && 266894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman "PPC branch conditions have two components!"); 267894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 268894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // One-way branch. 269894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (FBB == 0) { 270894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (Cond.empty()) // Unconditional branch 271894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman BuildMI(&MBB, DL, get(PPC::B)).addMBB(TBB); 272894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else // Conditional branch 273894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman BuildMI(&MBB, DL, get(PPC::BCC)) 274894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addImm(Cond[0].getImm()).addReg(Cond[1].getReg()).addMBB(TBB); 275894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 1; 276894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 277894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 278894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Two-way Conditional Branch. 279894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman BuildMI(&MBB, DL, get(PPC::BCC)) 280894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addImm(Cond[0].getImm()).addReg(Cond[1].getReg()).addMBB(TBB); 281894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman BuildMI(&MBB, DL, get(PPC::B)).addMBB(FBB); 282894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 2; 283894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 284894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 285894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanvoid PPCInstrInfo::copyPhysReg(MachineBasicBlock &MBB, 286894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineBasicBlock::iterator I, DebugLoc DL, 287894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned DestReg, unsigned SrcReg, 288894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman bool KillSrc) const { 289894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned Opc; 290894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (PPC::GPRCRegClass.contains(DestReg, SrcReg)) 291894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Opc = PPC::OR; 292894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (PPC::G8RCRegClass.contains(DestReg, SrcReg)) 293894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Opc = PPC::OR8; 294894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (PPC::F4RCRegClass.contains(DestReg, SrcReg)) 295894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Opc = PPC::FMR; 296894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (PPC::CRRCRegClass.contains(DestReg, SrcReg)) 297894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Opc = PPC::MCRF; 298894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (PPC::VRRCRegClass.contains(DestReg, SrcReg)) 299894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Opc = PPC::VOR; 300894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (PPC::CRBITRCRegClass.contains(DestReg, SrcReg)) 301894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Opc = PPC::CROR; 302894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else 303894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman llvm_unreachable("Impossible reg-to-reg copy"); 304894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 305894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const TargetInstrDesc &TID = get(Opc); 306894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (TID.getNumOperands() == 3) 307894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman BuildMI(MBB, I, DL, TID, DestReg) 308894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(SrcReg).addReg(SrcReg, getKillRegState(KillSrc)); 309894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else 310894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman BuildMI(MBB, I, DL, TID, DestReg).addReg(SrcReg, getKillRegState(KillSrc)); 311894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 312894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 313894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanbool 314894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPPCInstrInfo::StoreRegToStackSlot(MachineFunction &MF, 315894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned SrcReg, bool isKill, 316894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman int FrameIdx, 317894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const TargetRegisterClass *RC, 318894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SmallVectorImpl<MachineInstr*> &NewMIs) const{ 319894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DebugLoc DL; 320894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (RC == PPC::GPRCRegisterClass) { 321894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (SrcReg != PPC::LR) { 322894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STW)) 323894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(SrcReg, 324894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman getKillRegState(isKill)), 325894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 326894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else { 327894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // FIXME: this spills LR immediately to memory in one step. To do this, 328894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // we use R11, which we know cannot be used in the prolog/epilog. This is 329894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // a hack. 330894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::MFLR), PPC::R11)); 331894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STW)) 332894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(PPC::R11, 333894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman getKillRegState(isKill)), 334894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 335894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 336894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::G8RCRegisterClass) { 337894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (SrcReg != PPC::LR8) { 338894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STD)) 339894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(SrcReg, 340894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman getKillRegState(isKill)), 341894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 342894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else { 343894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // FIXME: this spills LR immediately to memory in one step. To do this, 344894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // we use R11, which we know cannot be used in the prolog/epilog. This is 345894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // a hack. 346894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::MFLR8), PPC::X11)); 347894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STD)) 348894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(PPC::X11, 349894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman getKillRegState(isKill)), 350894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 351894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 352894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::F8RCRegisterClass) { 353894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STFD)) 354894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(SrcReg, 355894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman getKillRegState(isKill)), 356894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 357894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::F4RCRegisterClass) { 358894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STFS)) 359894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(SrcReg, 360894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman getKillRegState(isKill)), 361894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 362894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::CRRCRegisterClass) { 363894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if ((EnablePPC32RS && !TM.getSubtargetImpl()->isPPC64()) || 364894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman (EnablePPC64RS && TM.getSubtargetImpl()->isPPC64())) { 365894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // FIXME (64-bit): Enable 366894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::SPILL_CR)) 367894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(SrcReg, 368894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman getKillRegState(isKill)), 369894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 370894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return true; 371894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else { 372894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // FIXME: We need a scatch reg here. The trouble with using R0 is that 373894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // it's possible for the stack frame to be so big the save location is 374894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // out of range of immediate offsets, necessitating another register. 375894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // We hack this on Darwin by reserving R2. It's probably broken on Linux 376894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // at the moment. 377894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 378894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // We need to store the CR in the low 4-bits of the saved value. First, 379894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // issue a MFCR to save all of the CRBits. 380894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned ScratchReg = TM.getSubtargetImpl()->isDarwinABI() ? 381894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman PPC::R2 : PPC::R0; 382894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::MFCRpseud), ScratchReg) 383894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(SrcReg, getKillRegState(isKill))); 384894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 385894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If the saved register wasn't CR0, shift the bits left so that they are 386894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // in CR0's slot. 387894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (SrcReg != PPC::CR0) { 388894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned ShiftBits = PPCRegisterInfo::getRegisterNumbering(SrcReg)*4; 389894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // rlwinm scratch, scratch, ShiftBits, 0, 31. 390894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::RLWINM), ScratchReg) 391894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(ScratchReg).addImm(ShiftBits) 392894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addImm(0).addImm(31)); 393894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 394894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 395894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STW)) 396894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(ScratchReg, 397894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman getKillRegState(isKill)), 398894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 399894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 400894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::CRBITRCRegisterClass) { 401894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // FIXME: We use CRi here because there is no mtcrf on a bit. Since the 402894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // backend currently only uses CR1EQ as an individual bit, this should 403894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // not cause any bug. If we need other uses of CR bits, the following 404894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // code may be invalid. 405894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned Reg = 0; 406894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (SrcReg == PPC::CR0LT || SrcReg == PPC::CR0GT || 407894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SrcReg == PPC::CR0EQ || SrcReg == PPC::CR0UN) 408894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR0; 409894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (SrcReg == PPC::CR1LT || SrcReg == PPC::CR1GT || 410894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SrcReg == PPC::CR1EQ || SrcReg == PPC::CR1UN) 411894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR1; 412894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (SrcReg == PPC::CR2LT || SrcReg == PPC::CR2GT || 413894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SrcReg == PPC::CR2EQ || SrcReg == PPC::CR2UN) 414894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR2; 415894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (SrcReg == PPC::CR3LT || SrcReg == PPC::CR3GT || 416894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SrcReg == PPC::CR3EQ || SrcReg == PPC::CR3UN) 417894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR3; 418894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (SrcReg == PPC::CR4LT || SrcReg == PPC::CR4GT || 419894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SrcReg == PPC::CR4EQ || SrcReg == PPC::CR4UN) 420894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR4; 421894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (SrcReg == PPC::CR5LT || SrcReg == PPC::CR5GT || 422894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SrcReg == PPC::CR5EQ || SrcReg == PPC::CR5UN) 423894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR5; 424894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (SrcReg == PPC::CR6LT || SrcReg == PPC::CR6GT || 425894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SrcReg == PPC::CR6EQ || SrcReg == PPC::CR6UN) 426894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR6; 427894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (SrcReg == PPC::CR7LT || SrcReg == PPC::CR7GT || 428894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SrcReg == PPC::CR7EQ || SrcReg == PPC::CR7UN) 429894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR7; 430894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 431894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return StoreRegToStackSlot(MF, Reg, isKill, FrameIdx, 432894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman PPC::CRRCRegisterClass, NewMIs); 433894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 434894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::VRRCRegisterClass) { 435894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // We don't have indexed addressing for vector loads. Emit: 436894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // R0 = ADDI FI# 437894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // STVX VAL, 0, R0 438894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // 439894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // FIXME: We use R0 here, because it isn't available for RA. 440894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::ADDI), PPC::R0), 441894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx, 0, 0)); 442894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::STVX)) 443894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(SrcReg, getKillRegState(isKill)) 444894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(PPC::R0) 445894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(PPC::R0)); 446894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else { 447894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman llvm_unreachable("Unknown regclass!"); 448894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 449894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 450894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 451894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 452894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 453894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanvoid 454894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPPCInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB, 455894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineBasicBlock::iterator MI, 456894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned SrcReg, bool isKill, int FrameIdx, 457894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const TargetRegisterClass *RC, 458894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const TargetRegisterInfo *TRI) const { 459894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineFunction &MF = *MBB.getParent(); 460894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SmallVector<MachineInstr*, 4> NewMIs; 461894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 462894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (StoreRegToStackSlot(MF, SrcReg, isKill, FrameIdx, RC, NewMIs)) { 463894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman PPCFunctionInfo *FuncInfo = MF.getInfo<PPCFunctionInfo>(); 464894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FuncInfo->setSpillsCR(); 465894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 466894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 467894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman for (unsigned i = 0, e = NewMIs.size(); i != e; ++i) 468894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MBB.insert(MI, NewMIs[i]); 469894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 470894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const MachineFrameInfo &MFI = *MF.getFrameInfo(); 471894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineMemOperand *MMO = 472894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MF.getMachineMemOperand(PseudoSourceValue::getFixedStack(FrameIdx), 473894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineMemOperand::MOStore, /*Offset=*/0, 474894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MFI.getObjectSize(FrameIdx), 475894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MFI.getObjectAlignment(FrameIdx)); 476894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.back()->addMemOperand(MF, MMO); 477894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 478894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 479894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanvoid 480894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPPCInstrInfo::LoadRegFromStackSlot(MachineFunction &MF, DebugLoc DL, 481894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned DestReg, int FrameIdx, 482894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const TargetRegisterClass *RC, 483894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SmallVectorImpl<MachineInstr*> &NewMIs)const{ 484894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (RC == PPC::GPRCRegisterClass) { 485894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (DestReg != PPC::LR) { 486894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LWZ), 487894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg), FrameIdx)); 488894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else { 489894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LWZ), 490894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman PPC::R11), FrameIdx)); 491894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::MTLR)).addReg(PPC::R11)); 492894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 493894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::G8RCRegisterClass) { 494894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (DestReg != PPC::LR8) { 495894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LD), DestReg), 496894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 497894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else { 498894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LD), 499894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman PPC::R11), FrameIdx)); 500894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::MTLR8)).addReg(PPC::R11)); 501894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 502894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::F8RCRegisterClass) { 503894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LFD), DestReg), 504894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 505894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::F4RCRegisterClass) { 506894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LFS), DestReg), 507894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx)); 508894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::CRRCRegisterClass) { 509894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // FIXME: We need a scatch reg here. The trouble with using R0 is that 510894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // it's possible for the stack frame to be so big the save location is 511894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // out of range of immediate offsets, necessitating another register. 512894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // We hack this on Darwin by reserving R2. It's probably broken on Linux 513894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // at the moment. 514894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned ScratchReg = TM.getSubtargetImpl()->isDarwinABI() ? 515894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman PPC::R2 : PPC::R0; 516894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LWZ), 517894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman ScratchReg), FrameIdx)); 518894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 519894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // If the reloaded register isn't CR0, shift the bits right so that they are 520894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // in the right CR's slot. 521894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (DestReg != PPC::CR0) { 522894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned ShiftBits = PPCRegisterInfo::getRegisterNumbering(DestReg)*4; 523894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // rlwinm r11, r11, 32-ShiftBits, 0, 31. 524894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::RLWINM), ScratchReg) 525894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(ScratchReg).addImm(32-ShiftBits).addImm(0) 526894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addImm(31)); 527894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 528894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 529894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::MTCRF), DestReg) 530894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(ScratchReg)); 531894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::CRBITRCRegisterClass) { 532894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 533894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned Reg = 0; 534894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (DestReg == PPC::CR0LT || DestReg == PPC::CR0GT || 535894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg == PPC::CR0EQ || DestReg == PPC::CR0UN) 536894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR0; 537894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (DestReg == PPC::CR1LT || DestReg == PPC::CR1GT || 538894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg == PPC::CR1EQ || DestReg == PPC::CR1UN) 539894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR1; 540894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (DestReg == PPC::CR2LT || DestReg == PPC::CR2GT || 541894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg == PPC::CR2EQ || DestReg == PPC::CR2UN) 542894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR2; 543894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (DestReg == PPC::CR3LT || DestReg == PPC::CR3GT || 544894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg == PPC::CR3EQ || DestReg == PPC::CR3UN) 545894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR3; 546894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (DestReg == PPC::CR4LT || DestReg == PPC::CR4GT || 547894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg == PPC::CR4EQ || DestReg == PPC::CR4UN) 548894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR4; 549894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (DestReg == PPC::CR5LT || DestReg == PPC::CR5GT || 550894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg == PPC::CR5EQ || DestReg == PPC::CR5UN) 551894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR5; 552894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (DestReg == PPC::CR6LT || DestReg == PPC::CR6GT || 553894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg == PPC::CR6EQ || DestReg == PPC::CR6UN) 554894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR6; 555894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman else if (DestReg == PPC::CR7LT || DestReg == PPC::CR7GT || 556894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DestReg == PPC::CR7EQ || DestReg == PPC::CR7UN) 557894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Reg = PPC::CR7; 558894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 559894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return LoadRegFromStackSlot(MF, DL, Reg, FrameIdx, 560894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman PPC::CRRCRegisterClass, NewMIs); 561894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 562894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else if (RC == PPC::VRRCRegisterClass) { 563894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // We don't have indexed addressing for vector loads. Emit: 564894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // R0 = ADDI FI# 565894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Dest = LVX 0, R0 566894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // 567894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // FIXME: We use R0 here, because it isn't available for RA. 568894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::ADDI), PPC::R0), 569894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman FrameIdx, 0, 0)); 570894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.push_back(BuildMI(MF, DL, get(PPC::LVX),DestReg).addReg(PPC::R0) 571894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman .addReg(PPC::R0)); 572894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } else { 573894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman llvm_unreachable("Unknown regclass!"); 574894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 575894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 576894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 577894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanvoid 578894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPPCInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB, 579894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineBasicBlock::iterator MI, 580894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman unsigned DestReg, int FrameIdx, 581894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const TargetRegisterClass *RC, 582894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const TargetRegisterInfo *TRI) const { 583894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineFunction &MF = *MBB.getParent(); 584894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman SmallVector<MachineInstr*, 4> NewMIs; 585894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DebugLoc DL; 586894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman if (MI != MBB.end()) DL = MI->getDebugLoc(); 587894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman LoadRegFromStackSlot(MF, DL, DestReg, FrameIdx, RC, NewMIs); 588894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman for (unsigned i = 0, e = NewMIs.size(); i != e; ++i) 589894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MBB.insert(MI, NewMIs[i]); 590894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 591894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const MachineFrameInfo &MFI = *MF.getFrameInfo(); 592894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineMemOperand *MMO = 593894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MF.getMachineMemOperand(PseudoSourceValue::getFixedStack(FrameIdx), 594894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineMemOperand::MOLoad, /*Offset=*/0, 595894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MFI.getObjectSize(FrameIdx), 596894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MFI.getObjectAlignment(FrameIdx)); 597894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman NewMIs.back()->addMemOperand(MF, MMO); 598894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 599894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 600894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanMachineInstr* 601894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanPPCInstrInfo::emitFrameIndexDebugValue(MachineFunction &MF, 602894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman int FrameIx, uint64_t Offset, 603894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const MDNode *MDPtr, 604894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman DebugLoc DL) const { 605894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman MachineInstrBuilder MIB = BuildMI(MF, DL, get(PPC::DBG_VALUE)); 606894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman addFrameReference(MIB, FrameIx, 0, false).addImm(Offset).addMetadata(MDPtr); 607894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return &*MIB; 608894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 609894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 610894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanbool PPCInstrInfo:: 611894018228b0e0bdbd7aa7e8f47d4a9458789ca82John BaumanReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const { 612894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman assert(Cond.size() == 2 && "Invalid PPC branch opcode!"); 613894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman // Leave the CR# the same, but invert the condition. 614894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman Cond[0].setImm(PPC::InvertPredicate((PPC::Predicate)Cond[0].getImm())); 615894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return false; 616894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 617894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman 618894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman/// GetInstSize - Return the number of bytes of code the specified 619894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman/// instruction may be. This returns the maximum number of bytes. 620894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman/// 621894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Baumanunsigned PPCInstrInfo::GetInstSizeInBytes(const MachineInstr *MI) const { 622894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman switch (MI->getOpcode()) { 623894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::INLINEASM: { // Inline Asm: Variable size. 624894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const MachineFunction *MF = MI->getParent()->getParent(); 625894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman const char *AsmStr = MI->getOperand(0).getSymbolName(); 626894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return getInlineAsmLength(AsmStr, *MF->getTarget().getMCAsmInfo()); 627894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 628894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::PROLOG_LABEL: 629894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::EH_LABEL: 630894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::GC_LABEL: 631894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman case PPC::DBG_VALUE: 632894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 0; 633894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman default: 634894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman return 4; // PowerPC instructions are all 4 bytes 635894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman } 636894018228b0e0bdbd7aa7e8f47d4a9458789ca82John Bauman} 637