[llvm] [VPlan] Use VPlan::getRegion to shorten code (NFC) (PR #164287)

[Ramkumar Ramachandra via llvm-commits]

https://github.com/artagnon created https://github.com/llvm/llvm-project/pull/164287

None

>From 9913b7a243f457d63d6a476d20364ad61f0c78ec Mon Sep 17 00:00:00 2001
From: Ramkumar Ramachandra <ramkumar.ramachandra at codasip.com>
Date: Mon, 20 Oct 2025 18:27:28 +0100
Subject: [PATCH] [VPlan] Use VPlan::getRegion to shorten code (NFC)

---
 llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
index e060e7081042a..51019eda9c3df 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
@@ -2092,8 +2092,8 @@ struct VPCSEDenseMapInfo : public DenseMapInfo<VPSingleDefRecipe *> {
     // Recipes in replicate regions implicitly depend on predicate. If either
     // recipe is in a replicate region, only consider them equal if both have
     // the same parent.
-    const VPRegionBlock *RegionL = L->getParent()->getParent();
-    const VPRegionBlock *RegionR = R->getParent()->getParent();
+    const VPRegionBlock *RegionL = L->getRegion();
+    const VPRegionBlock *RegionR = R->getRegion();
     if (((RegionL && RegionL->isReplicator()) ||
          (RegionR && RegionR->isReplicator())) &&
         L->getParent() != R->getParent())
@@ -3867,8 +3867,7 @@ void VPlanTransforms::materializePacksAndUnpacks(VPlan &Plan) {
         // required lanes implicitly.
         // TODO: Remove once replicate regions are unrolled completely.
         auto IsCandidateUnpackUser = [Def](VPUser *U) {
-          VPRegionBlock *ParentRegion =
-              cast<VPRecipeBase>(U)->getParent()->getParent();
+          VPRegionBlock *ParentRegion = cast<VPRecipeBase>(U)->getRegion();
           return U->usesScalars(Def) &&
                  (!ParentRegion || !ParentRegion->isReplicator());
         };