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[PowerPC][NFC] Remove Darwin specific logic in frame finalization.

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Remove some cumbersome Darwin specific logic for updating the frame
offsets of the condition-register spill slots. The containing function has an
early return if the subtarget is not ELF based which makes the Darwin logic
dead.
This commit is contained in:
Sean Fertile 2020-02-20 15:33:18 -05:00
parent ed1f03baaf
commit 0974dd862a
1 changed files with 5 additions and 11 deletions
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16
lib/Target/PowerPC/PPCFrameLowering.cpp
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@ -1990,19 +1990,13 @@ void PPCFrameLowering::processFunctionBeforeFrameFinalized(MachineFunction &MF,
// to the stack pointer and hence does not need an adjustment here.
// Only CR2 (the first nonvolatile spilled) has an associated frame
// index so that we have a single uniform save area.
if (spillsCR(MF) && !(Subtarget.isPPC64() && Subtarget.isSVR4ABI())) {
if (spillsCR(MF) && Subtarget.is32BitELFABI()) {
// Adjust the frame index of the CR spill slot.
for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
unsigned Reg = CSI[i].getReg();
if ((Subtarget.isSVR4ABI() && Reg == PPC::CR2)
// Leave Darwin logic as-is.
|| (!Subtarget.isSVR4ABI() &&
(PPC::CRBITRCRegClass.contains(Reg) ||
PPC::CRRCRegClass.contains(Reg)))) {
int FI = CSI[i].getFrameIdx();
for (const auto &CSInfo : CSI) {
if (CSInfo.getReg() == PPC::CR2) {
int FI = CSInfo.getFrameIdx();
MFI.setObjectOffset(FI, LowerBound + MFI.getObjectOffset(FI));
break;
}
}