[clang-tools-extra] 571354e - [clang-tidy] Avoid repeated hash lookups (NFC) (#112074)

[via cfe-commits]

Author: Kazu Hirata
Date: 2024-10-12T08:04:17-07:00
New Revision: 571354e25130b213146c26d05524fcd215fbd061

URL: https://github.com/llvm/llvm-project/commit/571354e25130b213146c26d05524fcd215fbd061
DIFF: https://github.com/llvm/llvm-project/commit/571354e25130b213146c26d05524fcd215fbd061.diff

LOG: [clang-tidy] Avoid repeated hash lookups (NFC) (#112074)

Added: 
    

Modified: 
    clang-tools-extra/clang-tidy/misc/ConfusableIdentifierCheck.cpp

Removed: 
    


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diff  --git a/clang-tools-extra/clang-tidy/misc/ConfusableIdentifierCheck.cpp b/clang-tools-extra/clang-tidy/misc/ConfusableIdentifierCheck.cpp
index 5b1b1cd152fffb..6df565c9a9d691 100644
--- a/clang-tools-extra/clang-tidy/misc/ConfusableIdentifierCheck.cpp
+++ b/clang-tools-extra/clang-tidy/misc/ConfusableIdentifierCheck.cpp
@@ -137,11 +137,11 @@ static bool mayShadow(const NamedDecl *ND0,
 const ConfusableIdentifierCheck::ContextInfo *
 ConfusableIdentifierCheck::getContextInfo(const DeclContext *DC) {
   const DeclContext *PrimaryContext = DC->getPrimaryContext();
-  auto It = ContextInfos.find(PrimaryContext);
-  if (It != ContextInfos.end())
+  auto [It, Inserted] = ContextInfos.try_emplace(PrimaryContext);
+  if (!Inserted)
     return &It->second;
 
-  ContextInfo &Info = ContextInfos[PrimaryContext];
+  ContextInfo &Info = It->second;
   Info.PrimaryContext = PrimaryContext;
   Info.NonTransparentContext = PrimaryContext;