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Enable X86 support for savestack/restorestack 

llvm-svn: 25278
This commit is contained in:
Chris Lattner 2006-01-13 18:00:54 +00:00
parent 776c326c96
commit 1a8d918ef1
2 changed files with 2 additions and 1 deletions
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1
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -39,6 +39,7 @@ X86TargetLowering::X86TargetLowering(TargetMachine &TM)
setSetCCResultType(MVT::i8);
setSetCCResultContents(ZeroOrOneSetCCResult);
setShiftAmountFlavor(Mask); // shl X, 32 == shl X, 0
setStackPointerRegisterToSaveRestore(X86::ESP);
// Set up the register classes.
addRegisterClass(MVT::i8, X86::R8RegisterClass);

2
llvm/lib/Target/X86/X86ISelPattern.cpp
View File

@ -1229,7 +1229,7 @@ unsigned ISel::SelectExpr(SDOperand N) {
cast<RegisterSDNode>(Node->getOperand(1))->getReg() :
cast<RegisterSDNode>(Node)->getReg();
// Just use the specified register as our input if we can.
if (MRegisterInfo::isVirtualRegister(Reg) || Reg == X86::ESP)
if (MRegisterInfo::isVirtualRegister(Reg))
return Reg;
}