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[X86] Don't lie about legality to TLI's demanded bits.

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Like r309323, X86 had a typo where it passed the wrong flags to TLO.

Found by inspection; I haven't been able to tickle this into having
observable behavior.  I don't think it does, given that X86 doesn't have
custom demanded bits logic, and the generic logic doesn't have a lot of
exposure to illegal constructs.

llvm-svn: 309325
This commit is contained in:
Ahmed Bougacha 2017-07-27 21:28:59 +00:00
parent ad53a4e70b
commit 93df3fb674
1 changed files with 2 additions and 2 deletions
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4
lib/Target/X86/X86ISelLowering.cpp
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@ -30573,8 +30573,8 @@ static SDValue combineSelect(SDNode *N, SelectionDAG &DAG,
assert(BitWidth >= 8 && BitWidth <= 64 && "Invalid mask size");
APInt DemandedMask(APInt::getSignMask(BitWidth));
KnownBits Known;
TargetLowering::TargetLoweringOpt TLO(DAG, DCI.isBeforeLegalize(),
DCI.isBeforeLegalizeOps());
TargetLowering::TargetLoweringOpt TLO(DAG, !DCI.isBeforeLegalize(),
!DCI.isBeforeLegalizeOps());
if (TLI.ShrinkDemandedConstant(Cond, DemandedMask, TLO) ||
TLI.SimplifyDemandedBits(Cond, DemandedMask, Known, TLO)) {
// If we changed the computation somewhere in the DAG, this change will