[llvm] [InstCombine] Use context in select-to-umin nonzero check (PR #225381)

[Nikita Popov via llvm-commits]

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@@ -732,7 +732,7 @@ static Value *foldSelectICmpMinMax(const ICmpInst *Cmp, Value *TVal,
   // canonicalized to "add %x, -1" discarding the nuw flag.
   if (Pred == CmpInst::ICMP_ULT &&
       match(FVal, m_Add(m_Specific(CmpRHS), m_AllOnes())) &&
-      isKnownNonZero(CmpRHS, SQ)) {
+      isKnownNonZero(CmpRHS, SQ.getWithInstruction(Cmp))) {
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nikic wrote:

Better to do this in the caller, which can use the select instruction.

https://github.com/llvm/llvm-project/pull/225381