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

[Kazu Hirata via llvm-commits]

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@@ -3327,7 +3327,7 @@ static void computeLiveInValues(DominatorTree &DT, Function &F,
     Data.LiveOut[BB] = LiveOut;
 
     // Apply the effects of this basic block
-    SetVector<Value *> LiveTmp = LiveOut;
+    SetVector<Value *> LiveTmp = std::move(LiveOut);
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kazutakahirata wrote:

@nikic Done.  I've updated the title.  Please take a look.  Thanks!

https://github.com/llvm/llvm-project/pull/136264