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Do not use the stack pointer directly, issue a copyfromreg instead. Otherwise we can end up with something like ADD32ri %esp, x which two-address pass won't like.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45798 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-01-10 00:37:26 +00:00
parent b199cbec2e
commit 27a446afaf
1 changed files with 1 additions and 1 deletions
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2
lib/Target/X86/X86ISelLowering.cpp
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@ -1332,7 +1332,7 @@ SDOperand X86TargetLowering::LowerCALL(SDOperand Op, SelectionDAG &DAG) {
} else {
assert(VA.isMemLoc());
if (StackPtr.Val == 0)
StackPtr = DAG.getRegister(getStackPtrReg(), getPointerTy());
StackPtr = DAG.getCopyFromReg(Chain, X86StackPtr, getPointerTy());
MemOpChains.push_back(LowerMemOpCallTo(Op, DAG, StackPtr, VA, Chain,
Arg));