[llvm] [Scalar] Avoid repeated hash lookups (NFC) (PR #130547)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/130547

None

>From af6e85ef2df8e2f64eda0e361a5e6851d4604000 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sun, 9 Mar 2025 00:56:43 -0800
Subject: [PATCH] [Scalar] Avoid repeated hash lookups (NFC)

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

diff --git a/llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp b/llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp
index e644636d42f63..2e955e061111f 100644
--- a/llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp
+++ b/llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp
@@ -397,9 +397,10 @@ static void splitCallSite(CallBase &CB,
         continue;
       PHINode *NewPN = PHINode::Create(CurrentI->getType(), Preds.size());
       NewPN->setDebugLoc(CurrentI->getDebugLoc());
-      for (auto &Mapping : ValueToValueMaps)
-        NewPN->addIncoming(Mapping[CurrentI],
-                           cast<Instruction>(Mapping[CurrentI])->getParent());
+      for (auto &Mapping : ValueToValueMaps) {
+        Value *V = Mapping[CurrentI];
+        NewPN->addIncoming(V, cast<Instruction>(V)->getParent());
+      }
       NewPN->insertBefore(*TailBB, TailBB->begin());
       CurrentI->replaceAllUsesWith(NewPN);
     }