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Only apply the SETCC+SITOFP -> SELECTCC optimization when the SETCC returns an MVT::i1, i.e. before type legalization.

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This is a speculative fix for a problem on Mips reported by Akira Hatanaka.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160036 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2012-07-11 06:38:55 +00:00
parent ba584fe8fe
commit 45299995d6
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -5975,7 +5975,8 @@ SDValue DAGCombiner::visitSINT_TO_FP(SDNode *N) {
}
// fold (sint_to_fp (setcc x, y, cc)) -> (select_cc x, y, -1.0, 0.0,, cc)
if (N0.getOpcode() == ISD::SETCC && !VT.isVector() &&
if (N0.getOpcode() == ISD::SETCC && N0.getValueType() == MVT::i1 &&
!VT.isVector() &&
(!LegalOperations ||
TLI.isOperationLegalOrCustom(llvm::ISD::ConstantFP, VT))) {
SDValue Ops[] =