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Move more PEI-related hooks to TFI

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120229 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2010-11-27 23:05:25 +00:00
parent cd775ceff0
commit 94c5ae0875
31 changed files with 796 additions and 793 deletions
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41
lib/Target/X86/X86FrameInfo.cpp
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@@ -870,3 +870,44 @@ bool X86FrameInfo::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
}
return true;
}
void
X86FrameInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const {
MachineFrameInfo *MFI = MF.getFrameInfo();
const X86RegisterInfo *RegInfo = TM.getRegisterInfo();
unsigned SlotSize = RegInfo->getSlotSize();
X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
int32_t TailCallReturnAddrDelta = X86FI->getTCReturnAddrDelta();
if (TailCallReturnAddrDelta < 0) {
// create RETURNADDR area
// arg
// arg
// RETADDR
// { ...
// RETADDR area
// ...
// }
// [EBP]
MFI->CreateFixedObject(-TailCallReturnAddrDelta,
(-1U*SlotSize)+TailCallReturnAddrDelta, true);
}
if (hasFP(MF)) {
assert((TailCallReturnAddrDelta <= 0) &&
"The Delta should always be zero or negative");
const TargetFrameInfo &TFI = *MF.getTarget().getFrameInfo();
// Create a frame entry for the EBP register that must be saved.
int FrameIdx = MFI->CreateFixedObject(SlotSize,
-(int)SlotSize +
TFI.getOffsetOfLocalArea() +
TailCallReturnAddrDelta,
true);
assert(FrameIdx == MFI->getObjectIndexBegin() &&
"Slot for EBP register must be last in order to be found!");
FrameIdx = 0;
}
}