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[X86] Remove some questionable looking code that seems to be looking through a VZEXT to create a larger VSEXT. 

If the input the vzext was signed this would do the wrong thing.

Not sure how to test this.

llvm-svn: 319382
This commit is contained in:
Craig Topper 2017-11-29 23:08:25 +00:00
parent 4b1acff9b3
commit 56a41d4b3a
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -18285,7 +18285,7 @@ static SDValue LowerSIGN_EXTEND_AVX512(SDValue Op,
if (VT.is512BitVector() && InVTElt != MVT::i1 &&
(NumElts == 8 || NumElts == 16 || Subtarget.hasBWI())) {
if (In.getOpcode() == X86ISD::VSEXT || In.getOpcode() == X86ISD::VZEXT)
if (In.getOpcode() == X86ISD::VSEXT)
return getExtendInVec(In.getOpcode(), dl, VT, In.getOperand(0), DAG);
return getExtendInVec(X86ISD::VSEXT, dl, VT, In, DAG);
}