[llvm] [InstSimplify] Simplify (X - (X urem Y)) u>= 1 via X u>= Y (PR #216072)
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Sat Aug 15 01:06:13 PDT 2026
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Analysis/ValueTracking.cpp --diff_from_common_commit
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index cdc650f06..f29abbade 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -4124,7 +4124,8 @@ static bool isNonEqualURemFromDomCondition(const Value *X, const Value *Rem,
return false;
// For a defined urem, X != X urem Y exactly when X u>= Y.
- // Check whether a dominating branch condition implies that relationship between X and Y.
+ // Check whether a dominating branch condition implies that relationship
+ // between X and Y.
std::optional<bool> Implied =
isImpliedByDomCondition(ICmpInst::ICMP_UGE, X, Y, Q.CxtI, Q.DL);
return Implied && *Implied;
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https://github.com/llvm/llvm-project/pull/216072
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