[llvm] 5fa989b - [Analysis] Avoid repeated hash lookups (NFC) (#123159)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-01-16T08:45:27-08:00
New Revision: 5fa989b034236ebf5a808dd47af50ab29d991a7d

URL: https://github.com/llvm/llvm-project/commit/5fa989b034236ebf5a808dd47af50ab29d991a7d
DIFF: https://github.com/llvm/llvm-project/commit/5fa989b034236ebf5a808dd47af50ab29d991a7d.diff

LOG: [Analysis] Avoid repeated hash lookups (NFC) (#123159)

Added: 
    

Modified: 
    llvm/lib/Analysis/InstructionPrecedenceTracking.cpp

Removed: 
    


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diff  --git a/llvm/lib/Analysis/InstructionPrecedenceTracking.cpp b/llvm/lib/Analysis/InstructionPrecedenceTracking.cpp
index fba5859b74cef3..9555e2c8dd5dd7 100644
--- a/llvm/lib/Analysis/InstructionPrecedenceTracking.cpp
+++ b/llvm/lib/Analysis/InstructionPrecedenceTracking.cpp
@@ -115,8 +115,9 @@ void InstructionPrecedenceTracking::insertInstructionTo(const Instruction *Inst,
 void InstructionPrecedenceTracking::removeInstruction(const Instruction *Inst) {
   auto *BB = Inst->getParent();
   assert(BB && "must be called before instruction is actually removed");
-  if (FirstSpecialInsts.count(BB) && FirstSpecialInsts[BB] == Inst)
-    FirstSpecialInsts.erase(BB);
+  auto It = FirstSpecialInsts.find(BB);
+  if (It != FirstSpecialInsts.end() && It->second == Inst)
+    FirstSpecialInsts.erase(It);
 }
 
 void InstructionPrecedenceTracking::removeUsersOf(const Instruction *Inst) {