[llvm-branch-commits] [llvm] [ConstraintElim] Prove sadd/ssub.with.overflow cannot overflow from the exact sum (PR #235159)

via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Fri Oct 23 17:06:22 PDT 2026


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/Scalar/ConstraintElimination.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/Transforms/Scalar/ConstraintElimination.cpp b/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
index 0a68635af..de3ab3696 100644
--- a/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
@@ -697,8 +697,7 @@ static bool isKnownNoSignedWrap(Instruction::BinaryOps Opcode, Value *Op0,
   constexpr unsigned MaxDepth = 2;
   return isKnownWithinSignedRange(LHS, SignedBound::Upper, Ty, Info,
                                   MaxDepth) &&
-         isKnownWithinSignedRange(LHS, SignedBound::Lower, Ty, Info,
-                                  MaxDepth);
+         isKnownWithinSignedRange(LHS, SignedBound::Lower, Ty, Info, MaxDepth);
 }
 
 /// Returns true if \p Opcode applied to \p Op0 and \p Op1 with \p NoWrapFlags

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https://github.com/llvm/llvm-project/pull/235159


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