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Only perform DAG combine on FMAs of legal types.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162892 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2012-08-30 06:56:15 +00:00
parent 73996f4407
commit b1bdd7d818
1 changed files with 4 additions and 0 deletions
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4
lib/Target/X86/X86ISelLowering.cpp
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@ -15601,6 +15601,10 @@ static SDValue PerformFMACombine(SDNode *N, SelectionDAG &DAG,
DebugLoc dl = N->getDebugLoc();
EVT VT = N->getValueType(0);
// Let legalize expand this if it isn't a legal type yet.
if (!DAG.getTargetLoweringInfo().isTypeLegal(VT))
return SDValue();
EVT ScalarVT = VT.getScalarType();
if ((ScalarVT != MVT::f32 && ScalarVT != MVT::f64) || !Subtarget->hasFMA())
return SDValue();