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* Move frame and constant pool indexes to first argument of memory reference 

so we can put an offset in there as well...
* Fix long/ulong stuff

llvm-svn: 5231
This commit is contained in:
Chris Lattner 2003-01-13 00:50:33 +00:00
parent 9fe3518dc0
commit 06e07162fc
1 changed files with 13 additions and 12 deletions
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25
llvm/lib/Target/X86/X86RegisterInfo.cpp
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@ -123,27 +123,29 @@ void X86RegisterInfo::eliminateCallFramePseudoInstr(MachineFunction &MF,
void X86RegisterInfo::eliminateFrameIndex(MachineFunction &MF,
MachineBasicBlock::iterator &II) const {
unsigned i = 3;
unsigned i = 0;
MachineInstr &MI = **II;
while (!MI.getOperand(i).isFrameIndex()) {
++i;
assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
}
// This must be part of a four operand memory reference. Replace the
// FrameIndex with the offset and the base register with EBP.
MI.SetMachineOperandReg(i-3, hasFP(MF) ? X86::EBP : X86::ESP);
// Now replace the frame index itself with the offset from EBP.
int FrameIndex = MI.getOperand(i).getFrameIndex();
int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex);
// This must be part of a four operand memory reference. Replace the
// FrameIndex with base register with EBP. Add add an offset to the offset.
MI.SetMachineOperandReg(i, hasFP(MF) ? X86::EBP : X86::ESP);
// Now add the frame object offset to the offset from EBP.
int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) +
MI.getOperand(i+3).getImmedValue();
if (!hasFP(MF) && hasSPAdjust(MF)) {
const MachineFrameInfo *MFI = MF.getFrameInfo();
Offset += MFI->getStackSize() + MFI->getMaxCallFrameSize();
}
MI.SetMachineOperandConst(i, MachineOperand::MO_SignExtendedImmed, Offset);
MI.SetMachineOperandConst(i+3, MachineOperand::MO_SignExtendedImmed, Offset);
}
void X86RegisterInfo::processFunctionBeforeFrameFinalized(MachineFunction &MF)
@ -332,15 +334,14 @@ X86RegisterInfo::X86RegisterInfo()
const TargetRegisterClass*
X86RegisterInfo::getRegClassForType(const Type* Ty) const {
switch (Ty->getPrimitiveID()) {
default: assert(0 && "Invalid type to getClass!");
case Type::LongTyID:
case Type::ULongTyID: assert(0 && "Long values can't fit in registers!");
default: assert(0 && "Invalid type to getClass!");
case Type::BoolTyID:
case Type::SByteTyID:
case Type::UByteTyID: return &X86ByteRegisterClassInstance;
case Type::ShortTyID:
case Type::UShortTyID: return &X86ShortRegisterClassInstance;
case Type::LongTyID: // FIXME: Longs are not handled yet!
case Type::ULongTyID: // FIXME: Treat these like ints, this is bogus!
case Type::IntTyID:
case Type::UIntTyID:
case Type::PointerTyID: return &X86IntRegisterClassInstance;