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[X86] Fix mistake in comment. NFC 

The code is matching sext not zext.

llvm-svn: 367357
This commit is contained in:
Craig Topper 2019-07-30 21:00:24 +00:00
parent 1e4a094b37
commit 8b58371fae
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -43422,8 +43422,8 @@ static SDValue matchPMADDWD(SelectionDAG &DAG, SDValue Op0, SDValue Op1,
}
// Attempt to turn this pattern into PMADDWD.
// (mul (add (zext (build_vector)), (zext (build_vector))),
// (add (zext (build_vector)), (zext (build_vector)))
// (mul (add (sext (build_vector)), (sext (build_vector))),
// (add (sext (build_vector)), (sext (build_vector)))
static SDValue matchPMADDWD_2(SelectionDAG &DAG, SDValue N0, SDValue N1,
const SDLoc &DL, EVT VT,
const X86Subtarget &Subtarget) {