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Remove addFrameMove.

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Now that we have good testing, remove addFrameMove and create cfi
instructions directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182052 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2013-05-16 21:02:15 +00:00
parent 529874cf0c
commit 6b67ffd68b
8 changed files with 88 additions and 130 deletions
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38
lib/Target/PowerPC/PPCFrameLowering.cpp
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@ -334,6 +334,7 @@ void PPCFrameLowering::emitPrologue(MachineFunction &MF) const {
*static_cast<const PPCInstrInfo*>(MF.getTarget().getInstrInfo());
MachineModuleInfo &MMI = MF.getMMI();
const MCRegisterInfo &MRI = MMI.getContext().getRegisterInfo();
DebugLoc dl;
bool needsFrameMoves = MMI.hasDebugInfo() ||
MF.getFunction()->needsUnwindTableEntry();
@ -524,20 +525,21 @@ void PPCFrameLowering::emitPrologue(MachineFunction &MF) const {
// Show update of SP.
assert(NegFrameSize);
MachineLocation SPDst(MachineLocation::VirtualFP);
MachineLocation SPSrc(MachineLocation::VirtualFP, NegFrameSize);
MMI.addFrameMove(FrameLabel, SPDst, SPSrc);
MMI.addFrameInst(
MCCFIInstruction::createDefCfaOffset(FrameLabel, NegFrameSize));
if (HasFP) {
MachineLocation FPDst(MachineLocation::VirtualFP, FPOffset);
MachineLocation FPSrc(isPPC64 ? PPC::X31 : PPC::R31);
MMI.addFrameMove(FrameLabel, FPDst, FPSrc);
unsigned Reg = isPPC64 ? PPC::X31 : PPC::R31;
Reg = MRI.getDwarfRegNum(Reg, true);
MMI.addFrameInst(
MCCFIInstruction::createOffset(FrameLabel, Reg, FPOffset));
}
if (MustSaveLR) {
MachineLocation LRDst(MachineLocation::VirtualFP, LROffset);
MachineLocation LRSrc(isPPC64 ? PPC::LR8 : PPC::LR);
MMI.addFrameMove(FrameLabel, LRDst, LRSrc);
unsigned Reg = isPPC64 ? PPC::LR8 : PPC::LR;
Reg = MRI.getDwarfRegNum(Reg, true);
MMI.addFrameInst(
MCCFIInstruction::createOffset(FrameLabel, Reg, LROffset));
}
}
@ -561,10 +563,10 @@ void PPCFrameLowering::emitPrologue(MachineFunction &MF) const {
// Mark effective beginning of when frame pointer is ready.
BuildMI(MBB, MBBI, dl, TII.get(PPC::PROLOG_LABEL)).addSym(ReadyLabel);
MachineLocation FPDst(HasFP ? (isPPC64 ? PPC::X31 : PPC::R31) :
(isPPC64 ? PPC::X1 : PPC::R1));
MachineLocation FPSrc(MachineLocation::VirtualFP);
MMI.addFrameMove(ReadyLabel, FPDst, FPSrc);
unsigned Reg = HasFP ? (isPPC64 ? PPC::X31 : PPC::R31)
: (isPPC64 ? PPC::X1 : PPC::R1);
Reg = MRI.getDwarfRegNum(Reg, true);
MMI.addFrameInst(MCCFIInstruction::createDefCfaRegister(ReadyLabel, Reg));
}
}
@ -594,16 +596,14 @@ void PPCFrameLowering::emitPrologue(MachineFunction &MF) const {
if (Subtarget.isSVR4ABI()
&& Subtarget.isPPC64()
&& (PPC::CR2 <= Reg && Reg <= PPC::CR4)) {
MachineLocation CSDst(PPC::X1, 8);
MachineLocation CSSrc(PPC::CR2);
MMI.addFrameMove(Label, CSDst, CSSrc);
MMI.addFrameInst(MCCFIInstruction::createOffset(
Label, MRI.getDwarfRegNum(PPC::CR2, true), 8));
continue;
}
int Offset = MFI->getObjectOffset(CSI[I].getFrameIdx());
MachineLocation CSDst(MachineLocation::VirtualFP, Offset);
MachineLocation CSSrc(Reg);
MMI.addFrameMove(Label, CSDst, CSSrc);
MMI.addFrameInst(MCCFIInstruction::createOffset(
Label, MRI.getDwarfRegNum(Reg, true), Offset));
}
}
}