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support >4G stack frames 

llvm-svn: 36423
This commit is contained in:
Chris Lattner 2007-04-25 04:25:10 +00:00
parent 9bd98ea4c1
commit 1ef35a2721
1 changed files with 9 additions and 9 deletions
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18
llvm/lib/Target/X86/X86RegisterInfo.cpp
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@ -939,7 +939,7 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
// 'sub ESP, <amt>' and the adjcallstackdown instruction into 'add ESP, // 'sub ESP, <amt>' and the adjcallstackdown instruction into 'add ESP,
// <amt>' // <amt>'
MachineInstr *Old = I; MachineInstr *Old = I;
unsigned Amount = Old->getOperand(0).getImmedValue(); uint64_t Amount = Old->getOperand(0).getImm();
if (Amount != 0) { if (Amount != 0) {
// We need to keep the stack aligned properly. To do this, we round the // We need to keep the stack aligned properly. To do this, we round the
// amount of space needed for the outgoing arguments up to the next // amount of space needed for the outgoing arguments up to the next
@ -954,7 +954,7 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
} else { } else {
assert(Old->getOpcode() == X86::ADJCALLSTACKUP); assert(Old->getOpcode() == X86::ADJCALLSTACKUP);
// factor out the amount the callee already popped. // factor out the amount the callee already popped.
unsigned CalleeAmt = Old->getOperand(1).getImmedValue(); uint64_t CalleeAmt = Old->getOperand(1).getImm();
Amount -= CalleeAmt; Amount -= CalleeAmt;
if (Amount) { if (Amount) {
unsigned Opc = (Amount < 128) ? unsigned Opc = (Amount < 128) ?
@ -972,7 +972,7 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
// If we are performing frame pointer elimination and if the callee pops // If we are performing frame pointer elimination and if the callee pops
// something off the stack pointer, add it back. We do this until we have // something off the stack pointer, add it back. We do this until we have
// more advanced stack pointer tracking ability. // more advanced stack pointer tracking ability.
if (unsigned CalleeAmt = I->getOperand(1).getImmedValue()) { if (uint64_t CalleeAmt = I->getOperand(1).getImm()) {
unsigned Opc = (CalleeAmt < 128) ? unsigned Opc = (CalleeAmt < 128) ?
(Is64Bit ? X86::SUB64ri8 : X86::SUB32ri8) : (Is64Bit ? X86::SUB64ri8 : X86::SUB32ri8) :
(Is64Bit ? X86::SUB64ri32 : X86::SUB32ri); (Is64Bit ? X86::SUB64ri32 : X86::SUB32ri);
@ -1001,8 +1001,8 @@ void X86RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
MI.getOperand(i).ChangeToRegister(hasFP(MF) ? FramePtr : StackPtr, false); MI.getOperand(i).ChangeToRegister(hasFP(MF) ? FramePtr : StackPtr, false);
// Now add the frame object offset to the offset from EBP. // Now add the frame object offset to the offset from EBP.
int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) + int64_t Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) +
MI.getOperand(i+3).getImmedValue()+SlotSize; MI.getOperand(i+3).getImm()+SlotSize;
if (!hasFP(MF)) if (!hasFP(MF))
Offset += MF.getFrameInfo()->getStackSize(); Offset += MF.getFrameInfo()->getStackSize();
@ -1182,8 +1182,8 @@ void X86RegisterInfo::emitEpilogue(MachineFunction &MF,
// pop EBP // pop EBP
BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::POP64r : X86::POP32r), FramePtr); BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::POP64r : X86::POP32r), FramePtr);
} else { } else {
// Get the number of bytes allocated from the FrameInfo... // Get the number of bytes allocated from the FrameInfo.
unsigned NumBytes = MFI->getStackSize(); uint64_t NumBytes = MFI->getStackSize();
if (NumBytes) { // adjust stack pointer back: ESP += numbytes if (NumBytes) { // adjust stack pointer back: ESP += numbytes
// If there is an ADD32ri or SUB32ri of ESP immediately before this // If there is an ADD32ri or SUB32ri of ESP immediately before this
@ -1194,12 +1194,12 @@ void X86RegisterInfo::emitEpilogue(MachineFunction &MF,
if ((Opc == X86::ADD64ri32 || Opc == X86::ADD64ri8 || if ((Opc == X86::ADD64ri32 || Opc == X86::ADD64ri8 ||
Opc == X86::ADD32ri || Opc == X86::ADD32ri8) && Opc == X86::ADD32ri || Opc == X86::ADD32ri8) &&
PI->getOperand(0).getReg() == StackPtr) { PI->getOperand(0).getReg() == StackPtr) {
NumBytes += PI->getOperand(2).getImmedValue(); NumBytes += PI->getOperand(2).getImm();
MBB.erase(PI); MBB.erase(PI);
} else if ((Opc == X86::SUB64ri32 || Opc == X86::SUB64ri8 || } else if ((Opc == X86::SUB64ri32 || Opc == X86::SUB64ri8 ||
Opc == X86::SUB32ri || Opc == X86::SUB32ri8) && Opc == X86::SUB32ri || Opc == X86::SUB32ri8) &&
PI->getOperand(0).getReg() == StackPtr) { PI->getOperand(0).getReg() == StackPtr) {
NumBytes -= PI->getOperand(2).getImmedValue(); NumBytes -= PI->getOperand(2).getImm();
MBB.erase(PI); MBB.erase(PI);
} }
} }