[llvm] d46c733 - [Scalar] Avoid repeated hash lookups (NFC) (#136264)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-04-19T09:39:39-07:00
New Revision: d46c7334e86040a71b4002786fe021ebf6946694

URL: https://github.com/llvm/llvm-project/commit/d46c7334e86040a71b4002786fe021ebf6946694
DIFF: https://github.com/llvm/llvm-project/commit/d46c7334e86040a71b4002786fe021ebf6946694.diff

LOG: [Scalar] Avoid repeated hash lookups (NFC) (#136264)

Added: 
    

Modified: 
    llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp b/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
index 7eee0283e20e6..8005be8d4ca05 100644
--- a/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
+++ b/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
@@ -3311,7 +3311,7 @@ static void computeLiveInValues(DominatorTree &DT, Function &F,
 
     // Compute our new liveout set, then exit early if it hasn't changed despite
     // the contribution of our successor.
-    SetVector<Value *> LiveOut = Data.LiveOut[BB];
+    SetVector<Value *> &LiveOut = Data.LiveOut[BB];
     const auto OldLiveOutSize = LiveOut.size();
     for (BasicBlock *Succ : successors(BB)) {
       assert(Data.LiveIn.count(Succ));
@@ -3324,7 +3324,6 @@ static void computeLiveInValues(DominatorTree &DT, Function &F,
       // hasn't changed.
       continue;
     }
-    Data.LiveOut[BB] = LiveOut;
 
     // Apply the effects of this basic block
     SetVector<Value *> LiveTmp = LiveOut;