[llvm] [ValueTracking] Convert `isKnownNonZero` to use SimplifyQuery (PR #85863)
Yingwei Zheng via llvm-commits
llvm-commits at lists.llvm.org
Thu Mar 21 06:24:40 PDT 2024
================
@@ -1771,11 +1771,14 @@ Instruction *InstCombinerImpl::foldICmpAndConstConst(ICmpInst &Cmp,
return new ICmpInst(NewPred, X, Zero);
}
- APInt NewC2 = *C2;
KnownBits Know = computeKnownBits(And->getOperand(0), 0, And);
+ if (Know.One.intersects(*C2))
+ return replaceInstUsesWith(
+ Cmp, ConstantInt::getBool(Cmp.getType(), isICMP_NE));
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dtcxzyw wrote:
Fixed by converting `isKnownZero` to use SimplifyQuery.
https://github.com/llvm/llvm-project/pull/85863
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