[llvm] [ConstantFolding] Fold scalable shufflevector of poison/undef. (PR #143475)

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github-actions[bot] wrote:

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


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

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You can test this locally with the following command:
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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/IR/ConstantFold.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/IR/ConstantFold.cpp b/llvm/lib/IR/ConstantFold.cpp
index 6c8850aae..82304b89b 100644
--- a/llvm/lib/IR/ConstantFold.cpp
+++ b/llvm/lib/IR/ConstantFold.cpp
@@ -463,7 +463,8 @@ Constant *llvm::ConstantFoldShuffleVectorInstruction(Constant *V1, Constant *V2,
     Constant *Elt =
         ConstantExpr::getExtractElement(V1, ConstantInt::get(Ty, 0));
 
-    if (!MaskEltCount.isScalable() || Elt->isNullValue() || isa<UndefValue>(Elt))
+    if (!MaskEltCount.isScalable() || Elt->isNullValue() ||
+        isa<UndefValue>(Elt))
       return ConstantVector::getSplat(MaskEltCount, Elt);
   }
 

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https://github.com/llvm/llvm-project/pull/143475