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Fish kill flag annotations in PUSH instructions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60095 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-11-26 06:39:12 +00:00
parent 2ad8245566
commit 25a1b47cc3
2 changed files with 5 additions and 3 deletions
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3
lib/Target/X86/X86InstrInfo.cpp
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@ -1880,7 +1880,8 @@ bool X86InstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
unsigned Reg = CSI[i-1].getReg();
// Add the callee-saved register as live-in. It's killed at the spill.
MBB.addLiveIn(Reg);
BuildMI(MBB, MI, get(Opc)).addReg(Reg);
BuildMI(MBB, MI, get(Opc))
.addReg(Reg, /*isDef=*/false, /*isImp=*/false, /*isKill=*/true);
}
return true;
}

5
lib/Target/X86/X86RegisterInfo.cpp
View File

@ -719,7 +719,7 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
// Save EBP into the appropriate stack slot...
BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::PUSH64r : X86::PUSH32r))
.addReg(FramePtr);
.addReg(FramePtr, /*isDef=*/false, /*isImp=*/false, /*isKill=*/true);
if (needsFrameMoves) {
// Mark effective beginning of when frame pointer becomes valid.
@ -774,7 +774,8 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
.addExternalSymbol("_alloca");
} else {
// Save EAX
BuildMI(MBB, MBBI, TII.get(X86::PUSH32r), X86::EAX);
BuildMI(MBB, MBBI, TII.get(X86::PUSH32r))
.addReg(X86::EAX, /*isDef=*/false, /*isImp=*/false, /*isKill=*/true);
// Allocate NumBytes-4 bytes on stack. We'll also use 4 already
// allocated bytes for EAX.
BuildMI(MBB, MBBI, TII.get(X86::MOV32ri), X86::EAX).addImm(NumBytes-4);