[llvm] 44b61e0 - [Analysis] Avoid repeated hash lookups (NFC) (#127024)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-02-13T09:10:57-08:00
New Revision: 44b61e056ddb237b7a40d46916abd5d7d6957a3c

URL: https://github.com/llvm/llvm-project/commit/44b61e056ddb237b7a40d46916abd5d7d6957a3c
DIFF: https://github.com/llvm/llvm-project/commit/44b61e056ddb237b7a40d46916abd5d7d6957a3c.diff

LOG: [Analysis] Avoid repeated hash lookups (NFC) (#127024)

Added: 
    

Modified: 
    llvm/lib/Analysis/PhiValues.cpp

Removed: 
    


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diff  --git a/llvm/lib/Analysis/PhiValues.cpp b/llvm/lib/Analysis/PhiValues.cpp
index 656a17e9dc30e..1e0dac35f9ef3 100644
--- a/llvm/lib/Analysis/PhiValues.cpp
+++ b/llvm/lib/Analysis/PhiValues.cpp
@@ -67,8 +67,10 @@ void PhiValues::processPhi(const PHINode *Phi,
       }
       // If the phi did not become part of a component then this phi and that
       // phi are part of the same component, so adjust the depth number.
-      if (!ReachableMap.count(OpDepthNumber))
-        DepthMap[Phi] = std::min(DepthMap[Phi], OpDepthNumber);
+      if (!ReachableMap.count(OpDepthNumber)) {
+        unsigned &Depth = DepthMap[Phi];
+        Depth = std::min(Depth, OpDepthNumber);
+      }
     } else {
       TrackedValues.insert(PhiValuesCallbackVH(PhiOp, this));
     }