[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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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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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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