[llvm] [InstCombine] Sink widening casts used only by extractelements (PR #201529)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/InstCombine/InstCombineVectorOps.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/InstCombine/InstCombineVectorOps.cpp b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
index 03de57c6b..e283b0e70 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
@@ -433,7 +433,8 @@ static bool canSinkCastThroughExtract(CastInst *Cast, ExtractElementInst &EI,
   // With multiple uses, only sink widening casts (sext/zext/fpext) whose every
   // user is a sinkable extractelement (same block as the cast or a constant
   // index). This ensures the wide cast is fully removed rather than left
-  // alongside the new scalar casts. Other casts are left to the single-use case.
+  // alongside the new scalar casts. Other casts are left to the single-use
+  // case.
   switch (Cast->getOpcode()) {
   case Instruction::SExt:
   case Instruction::ZExt:

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https://github.com/llvm/llvm-project/pull/201529