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Perform correct codegen for eh_dwarf_cfa intrinsic. 

llvm-svn: 41316
This commit is contained in:
Anton Korobeynikov 2007-08-23 07:21:06 +00:00
parent 10cb5e520f
commit 97cdac8d19
1 changed files with 10 additions and 2 deletions
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12
llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -2751,11 +2751,19 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
case Intrinsic::eh_dwarf_cfa: {
if (ExceptionHandling) {
MVT::ValueType VT = getValue(I.getOperand(1)).getValueType();
SDOperand CfaArg;
if (MVT::getSizeInBits(VT) > MVT::getSizeInBits(TLI.getPointerTy()))
CfaArg = DAG.getNode(ISD::TRUNCATE,
TLI.getPointerTy(), getValue(I.getOperand(1)));
else
CfaArg = DAG.getNode(ISD::SIGN_EXTEND,
TLI.getPointerTy(), getValue(I.getOperand(1)));
SDOperand Offset = DAG.getNode(ISD::ADD,
TLI.getPointerTy(),
DAG.getNode(ISD::FRAME_TO_ARGS_OFFSET,
VT),
getValue(I.getOperand(1)));
TLI.getPointerTy()),
CfaArg);
setValue(&I, DAG.getNode(ISD::ADD,
TLI.getPointerTy(),
DAG.getNode(ISD::FRAMEADDR,