[llvm] [IPO] Avoid repeated hash lookups (NFC) (PR #130462)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/130462

None

>From 7fb213f0b46d6e74e4f7c8de4b02ee08d14ae68e Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sat, 8 Mar 2025 01:08:39 -0800
Subject: [PATCH] [IPO] Avoid repeated hash lookups (NFC)

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

diff --git a/llvm/lib/Transforms/IPO/FunctionAttrs.cpp b/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
index 6fe81f7b063ec..1fca1b54065d4 100644
--- a/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -406,15 +406,16 @@ static FunctionSummary *calculatePrevailingSummary(
     }
   }
 
+  auto &CPS = CachedPrevailingSummary[VI];
   if (Local) {
     assert(!Prevailing);
-    CachedPrevailingSummary[VI] = Local;
+    CPS = Local;
   } else if (Prevailing) {
     assert(!Local);
-    CachedPrevailingSummary[VI] = Prevailing;
+    CPS = Prevailing;
   }
 
-  return CachedPrevailingSummary[VI];
+  return CPS;
 }
 
 bool llvm::thinLTOPropagateFunctionAttrs(