[llvm] [VPlan] Iterate over header phis to determine FORs that need EVL fixup. NFCI (PR #147032)

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github-actions[bot] wrote:

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp -- llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
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View the diff from clang-format here.
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diff --git a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
index 43ced065c..a297d945f 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
@@ -2197,7 +2197,8 @@ static void transformRecipestoEVLRecipes(VPlan &Plan, VPValue &EVL) {
 
   // When unrolling splices may not use VPFirstOrderRecurrencePHIRecipes, so the
   // below transformation will need to be fixed.
-  assert(!Plan.isUnrolled() && "Unrolling not supported with EVL tail folding.");
+  assert(!Plan.isUnrolled() &&
+         "Unrolling not supported with EVL tail folding.");
 
   // Replace FirstOrderRecurrenceSplice with experimental_vp_splice intrinsics.
   VPValue *PrevEVL = nullptr;

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https://github.com/llvm/llvm-project/pull/147032