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[X86] Remove a DCI.isBeforeLegalize() call from combineVSelectWithAllOnesOrZeros.

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This was blocking isTypeLegal call so that we could do a particular
transform on illegal types before type legalization. But the we
create a target specific node using that type. We shouldn't do
that if the type isn't legal. So I think we should just always
make sure the type is legal.

I suspect that in order to get the condition VT to not be a vector
of i1 we already completed type legalization anyway so this probably
doesn't matter much in practice.
This commit is contained in:
Craig Topper 2020-08-08 14:05:51 -07:00
parent 2f56715ea7
commit 2826efbf81
1 changed files with 1 additions and 1 deletions
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lib/Target/X86/X86ISelLowering.cpp
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@ -39608,7 +39608,7 @@ combineVSelectWithAllOnesOrZeros(SDNode *N, SelectionDAG &DAG,
if (TValIsAllOnes && FValIsAllZeros)
return DAG.getBitcast(VT, Cond);
if (!DCI.isBeforeLegalize() && !TLI.isTypeLegal(CondVT))
if (!TLI.isTypeLegal(CondVT))
return SDValue();
// vselect Cond, 111..., X -> or Cond, X