[llvm] 0f47627 - [ObjectYAML] Avoid repeated hash lookups (NFC) (#111938)
via llvm-commits
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Fri Oct 11 09:00:19 PDT 2024
Author: Kazu Hirata
Date: 2024-10-11T09:00:15-07:00
New Revision: 0f476277d52b3d31739fe8a1b06791f1747e152d
URL: https://github.com/llvm/llvm-project/commit/0f476277d52b3d31739fe8a1b06791f1747e152d
DIFF: https://github.com/llvm/llvm-project/commit/0f476277d52b3d31739fe8a1b06791f1747e152d.diff
LOG: [ObjectYAML] Avoid repeated hash lookups (NFC) (#111938)
Added:
Modified:
llvm/lib/ObjectYAML/COFFEmitter.cpp
Removed:
################################################################################
diff --git a/llvm/lib/ObjectYAML/COFFEmitter.cpp b/llvm/lib/ObjectYAML/COFFEmitter.cpp
index bb46de4c6f57f4..3811376adebd26 100644
--- a/llvm/lib/ObjectYAML/COFFEmitter.cpp
+++ b/llvm/lib/ObjectYAML/COFFEmitter.cpp
@@ -125,15 +125,12 @@ struct COFFParser {
}
unsigned getStringIndex(StringRef Str) {
- StringMap<unsigned>::iterator i = StringTableMap.find(Str);
- if (i == StringTableMap.end()) {
- unsigned Index = StringTable.size();
+ auto [It, Inserted] = StringTableMap.try_emplace(Str, StringTable.size());
+ if (Inserted) {
StringTable.append(Str.begin(), Str.end());
StringTable.push_back(0);
- StringTableMap[Str] = Index;
- return Index;
}
- return i->second;
+ return It->second;
}
COFFYAML::Object &Obj;
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