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Add support for return value promotion in X86 calling conventions.

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Patch by Yiannis Tsiouris!

llvm-svn: 157757
This commit is contained in:
Jakob Stoklund Olesen 2012-05-31 17:28:20 +00:00
parent 19569cbcde
commit a77ddf1405
1 changed files with 10 additions and 0 deletions
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10
lib/Target/X86/X86ISelLowering.cpp
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@ -1504,6 +1504,16 @@ X86TargetLowering::LowerReturn(SDValue Chain,
SDValue ValToCopy = OutVals[i];
EVT ValVT = ValToCopy.getValueType();
// Promote values to the appropriate types
if (VA.getLocInfo() == CCValAssign::SExt)
ValToCopy = DAG.getNode(ISD::SIGN_EXTEND, dl, VA.getLocVT(), ValToCopy);
else if (VA.getLocInfo() == CCValAssign::ZExt)
ValToCopy = DAG.getNode(ISD::ZERO_EXTEND, dl, VA.getLocVT(), ValToCopy);
else if (VA.getLocInfo() == CCValAssign::AExt)
ValToCopy = DAG.getNode(ISD::ANY_EXTEND, dl, VA.getLocVT(), ValToCopy);
else if (VA.getLocInfo() == CCValAssign::BCvt)
ValToCopy = DAG.getNode(ISD::BITCAST, dl, VA.getLocVT(), ValToCopy);
// If this is x86-64, and we disabled SSE, we can't return FP values,
// or SSE or MMX vectors.
if ((ValVT == MVT::f32 || ValVT == MVT::f64 ||