[llvm] 7c7cebf - [Scalar] Avoid repeated hash lookups (NFC) (#130463)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-03-09T00:48:17-08:00
New Revision: 7c7cebf49de18fa3445d9e8fc68b0d049f2d67c1

URL: https://github.com/llvm/llvm-project/commit/7c7cebf49de18fa3445d9e8fc68b0d049f2d67c1
DIFF: https://github.com/llvm/llvm-project/commit/7c7cebf49de18fa3445d9e8fc68b0d049f2d67c1.diff

LOG: [Scalar] Avoid repeated hash lookups (NFC) (#130463)

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Scalar/StructurizeCFG.cpp b/llvm/lib/Transforms/Scalar/StructurizeCFG.cpp
index b1f742b838f2a..89a2a7ac9be3f 100644
--- a/llvm/lib/Transforms/Scalar/StructurizeCFG.cpp
+++ b/llvm/lib/Transforms/Scalar/StructurizeCFG.cpp
@@ -852,10 +852,11 @@ void StructurizeCFG::setPhiValues() {
     BasicBlock *To = AddedPhi.first;
     const BBVector &From = AddedPhi.second;
 
-    if (!DeletedPhis.count(To))
+    auto It = DeletedPhis.find(To);
+    if (It == DeletedPhis.end())
       continue;
 
-    PhiMap &Map = DeletedPhis[To];
+    PhiMap &Map = It->second;
     SmallVector<BasicBlock *> &UndefBlks = UndefBlksMap[To];
     for (const auto &[Phi, Incoming] : Map) {
       Value *Undef = UndefValue::get(Phi->getType());