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- Remove calls to copyKillDeadInfo which is an N^2 function. Instead, propagate kill / dead markers as new instructions are constructed in foldMemoryOperand, convertToThressAddress, etc.

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- Also remove LiveVariables::instructionChanged, etc. Replace all calls with cheaper calls which update VarInfo kill list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53097 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-07-03 09:09:37 +00:00
parent f9d0318950
commit 9f1c8317a4
16 changed files with 225 additions and 260 deletions
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lib/Target/PowerPC/PPCInstrInfo.cpp
+27 -10
View File
@@ -661,45 +661,62 @@ MachineInstr *PPCInstrInfo::foldMemoryOperand(MachineFunction &MF,
MI->getOperand(1).getReg() == MI->getOperand(2).getReg())) {
if (OpNum == 0) { // move -> store
unsigned InReg = MI->getOperand(1).getReg();
NewMI = addFrameReference(BuildMI(get(PPC::STW)).addReg(InReg),
bool isKill = MI->getOperand(1).isKill();
NewMI = addFrameReference(BuildMI(get(PPC::STW))
.addReg(InReg, false, false, isKill),
FrameIndex);
} else { // move -> load
unsigned OutReg = MI->getOperand(0).getReg();
NewMI = addFrameReference(BuildMI(get(PPC::LWZ), OutReg),
bool isDead = MI->getOperand(0).isDead();
NewMI = addFrameReference(BuildMI(get(PPC::LWZ))
.addReg(OutReg, true, false, false, isDead),
FrameIndex);
}
} else if ((Opc == PPC::OR8 &&
MI->getOperand(1).getReg() == MI->getOperand(2).getReg())) {
if (OpNum == 0) { // move -> store
unsigned InReg = MI->getOperand(1).getReg();
NewMI = addFrameReference(BuildMI(get(PPC::STD)).addReg(InReg),
bool isKill = MI->getOperand(1).isKill();
NewMI = addFrameReference(BuildMI(get(PPC::STD))
.addReg(InReg, false, false, isKill),
FrameIndex);
} else { // move -> load
unsigned OutReg = MI->getOperand(0).getReg();
NewMI = addFrameReference(BuildMI(get(PPC::LD), OutReg), FrameIndex);
bool isDead = MI->getOperand(0).isDead();
NewMI = addFrameReference(BuildMI(get(PPC::LD))
.addReg(OutReg, true, false, false, isDead),
FrameIndex);
}
} else if (Opc == PPC::FMRD) {
if (OpNum == 0) { // move -> store
unsigned InReg = MI->getOperand(1).getReg();
NewMI = addFrameReference(BuildMI(get(PPC::STFD)).addReg(InReg),
bool isKill = MI->getOperand(1).isKill();
NewMI = addFrameReference(BuildMI(get(PPC::STFD))
.addReg(InReg, false, false, isKill),
FrameIndex);
} else { // move -> load
unsigned OutReg = MI->getOperand(0).getReg();
NewMI = addFrameReference(BuildMI(get(PPC::LFD), OutReg), FrameIndex);
bool isDead = MI->getOperand(0).isDead();
NewMI = addFrameReference(BuildMI(get(PPC::LFD))
.addReg(OutReg, true, false, false, isDead),
FrameIndex);
}
} else if (Opc == PPC::FMRS) {
if (OpNum == 0) { // move -> store
unsigned InReg = MI->getOperand(1).getReg();
NewMI = addFrameReference(BuildMI(get(PPC::STFS)).addReg(InReg),
bool isKill = MI->getOperand(1).isKill();
NewMI = addFrameReference(BuildMI(get(PPC::STFS))
.addReg(InReg, false, false, isKill),
FrameIndex);
} else { // move -> load
unsigned OutReg = MI->getOperand(0).getReg();
NewMI = addFrameReference(BuildMI(get(PPC::LFS), OutReg), FrameIndex);
bool isDead = MI->getOperand(0).isDead();
NewMI = addFrameReference(BuildMI(get(PPC::LFS))
.addReg(OutReg, true, false, false, isDead),
FrameIndex);
}
}
if (NewMI)
NewMI->copyKillDeadInfo(MI);
return NewMI;
}