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

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/130462.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/IPO/FunctionAttrs.cpp (+4-3) 


``````````diff
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(

``````````

</details>


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