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Fix sign extend to long. When coming from sbyte, we used to generate: 

movsbl 4(%esp), %eax
        movl %eax, %edx
        sarl $7, %edx

Now we generate:

        movsbl 4(%esp), %eax
        movl %eax, %edx
        sarl $31, %edx

Which is right.

llvm-svn: 19515
This commit is contained in:
Chris Lattner 2005-01-12 18:19:52 +00:00
parent 1321754941
commit 9864b08f94
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -805,8 +805,8 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){
// The high part is obtained by SRA'ing all but one of the bits of the lo
// part.
unsigned SrcSize = MVT::getSizeInBits(Node->getOperand(0).getValueType());
Hi = DAG.getNode(ISD::SRA, NVT, Lo, DAG.getConstant(SrcSize-1, MVT::i8));
unsigned LoSize = MVT::getSizeInBits(Lo.getValueType());
Hi = DAG.getNode(ISD::SRA, NVT, Lo, DAG.getConstant(LoSize-1, MVT::i8));
break;
}
case ISD::ZERO_EXTEND: