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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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14
lib/Target/CellSPU/SPUInstrInfo.cpp
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@@ -412,20 +412,22 @@ SPUInstrInfo::foldMemoryOperand(MachineFunction &MF,
&& MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
if (OpNum == 0) { // move -> store
unsigned InReg = MI->getOperand(1).getReg();
bool isKill = MI->getOperand(1).isKill();
if (FrameIndex < SPUFrameInfo::maxFrameOffset()) {
NewMI = addFrameReference(BuildMI(TII.get(SPU::STQDr32)).addReg(InReg),
NewMI = addFrameReference(BuildMI(TII.get(SPU::STQDr32))
.addReg(InReg, false, false, isKill),
FrameIndex);
}
} else { // move -> load
unsigned OutReg = MI->getOperand(0).getReg();
Opc = (FrameIndex < SPUFrameInfo::maxFrameOffset()) ? SPU::STQDr32 : SPU::STQXr32;
NewMI = addFrameReference(BuildMI(TII.get(Opc), OutReg), FrameIndex);
bool isDead = MI->getOperand(0).isDead();
Opc = (FrameIndex < SPUFrameInfo::maxFrameOffset())
? SPU::STQDr32 : SPU::STQXr32;
NewMI = addFrameReference(BuildMI(TII.get(Opc))
.addReg(OutReg, true, false, false, isDead), FrameIndex);
}
}
if (NewMI)
NewMI->copyKillDeadInfo(MI);
return NewMI;
#else
return 0;