[llvm] [VPlan] Unify inner and outer loop paths (NFCI). (PR #192868)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h llvm/lib/Transforms/Vectorize/LoopVectorize.cpp llvm/lib/Transforms/Vectorize/VPlan.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index e13acdfa6..7e7c9906b 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -7678,10 +7678,10 @@ void LoopVectorizationPlanner::buildVPlans(ElementCount MinVF,
 
   // Create recipes for header phis. For outer loops, reductions, recurrences
   // and in-loop reductions are empty since legality doesn't detect them.
-  RUN_VPLAN_PASS(VPlanTransforms::createHeaderPhiRecipes,
-      *VPlan0, PSE, *OrigLoop, Legal->getInductionVars(),
-      Legal->getReductionVars(), Legal->getFixedOrderRecurrences(),
-      CM.getInLoopReductions(), Hints.allowReordering());
+  RUN_VPLAN_PASS(VPlanTransforms::createHeaderPhiRecipes, *VPlan0, PSE,
+                 *OrigLoop, Legal->getInductionVars(),
+                 Legal->getReductionVars(), Legal->getFixedOrderRecurrences(),
+                 CM.getInLoopReductions(), Hints.allowReordering());
 
   RUN_VPLAN_PASS(VPlanTransforms::simplifyRecipes, *VPlan0);
   // If we're vectorizing a loop with an uncountable exit, make sure that the
@@ -7706,8 +7706,7 @@ void LoopVectorizationPlanner::buildVPlans(ElementCount MinVF,
     RUN_VPLAN_PASS(VPlanTransforms::foldTailByMasking, *VPlan0);
   // introduceMasksAndLinearize does not support nested loop regions yet.
   if (IsInnerLoop)
-    RUN_VPLAN_PASS(VPlanTransforms::introduceMasksAndLinearize,
-                             *VPlan0);
+    RUN_VPLAN_PASS(VPlanTransforms::introduceMasksAndLinearize, *VPlan0);
 
   auto MaxVFTimes2 = MaxVF * 2;
   for (ElementCount VF = MinVF; ElementCount::isKnownLT(VF, MaxVFTimes2);) {

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https://github.com/llvm/llvm-project/pull/192868