[llvm] [LV] Apply urem folds to preheader (PR #213928)

via llvm-commits llvm-commits at lists.llvm.org
Tue Aug 4 05:57:20 PDT 2026


github-actions[bot] wrote:

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


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp --diff_from_common_commit
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
:warning:

</details>

<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
index 8761361c7..412f120b0 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
@@ -1366,8 +1366,8 @@ static void simplifyRecipe(VPSingleDefRecipe *Def) {
   }
 
   const APInt *APC;
-  if (CanCreateNewRecipe &&
-      match(Def, m_URem(m_VPValue(X), m_APInt(APC))) && APC->isPowerOf2()) {
+  if (CanCreateNewRecipe && match(Def, m_URem(m_VPValue(X), m_APInt(APC))) &&
+      APC->isPowerOf2()) {
     return Def->replaceAllUsesWith(Builder.createAnd(
         X, Plan->getConstantInt(*APC - 1), Def->getDebugLoc()));
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/213928


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