[llvm] [Analysis] Avoid repeated hash lookups (NFC) (PR #132512)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/132512

None

>From 075f7895029f936ff3b4a71d43f0e9da2c501553 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Fri, 21 Mar 2025 08:29:52 -0700
Subject: [PATCH] [Analysis] Avoid repeated hash lookups (NFC)

---
 llvm/lib/Analysis/IRSimilarityIdentifier.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/Analysis/IRSimilarityIdentifier.cpp b/llvm/lib/Analysis/IRSimilarityIdentifier.cpp
index e1daf02ee6bba..ca011362702ac 100644
--- a/llvm/lib/Analysis/IRSimilarityIdentifier.cpp
+++ b/llvm/lib/Analysis/IRSimilarityIdentifier.cpp
@@ -728,11 +728,10 @@ bool IRSimilarityCandidate::compareAssignmentMapping(
     for (unsigned OtherVal : ValueMappingIt->second) {
       if (OtherVal == InstValB)
         continue;
-      if (!ValueNumberMappingA.contains(OtherVal))
+      auto OtherValIt = ValueNumberMappingA.find(OtherVal);
+      if (OtherValIt == ValueNumberMappingA.end())
         continue;
-      if (!ValueNumberMappingA[OtherVal].contains(InstValA))
-        continue;
-      ValueNumberMappingA[OtherVal].erase(InstValA);
+      OtherValIt->second.erase(InstValA);
     }
     ValueNumberMappingA.erase(ValueMappingIt);
     std::tie(ValueMappingIt, WasInserted) = ValueNumberMappingA.insert(