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| author | Fangrui Song <i@maskray.me> | 2022-01-16 21:02:05 -0800 |
|---|---|---|
| committer | Fangrui Song <i@maskray.me> | 2022-01-16 21:02:05 -0800 |
| commit | e20544543478b259eb09fa0a253d4fb1a5525d9e (patch) | |
| tree | e50f82a39f5577a49cf3ffb6c3190591b1bc12a1 /lld/ELF/SyntheticSections.cpp | |
| parent | 427d3b93eebadb57ef72e1eb167dd41043b87f39 (diff) | |
| download | llvm-e20544543478b259eb09fa0a253d4fb1a5525d9e.zip llvm-e20544543478b259eb09fa0a253d4fb1a5525d9e.tar.gz llvm-e20544543478b259eb09fa0a253d4fb1a5525d9e.tar.bz2 | |
[ELF] StringTableSection: Use DenseMap<CachedHashStringRef> to avoid redundant hash computation
5~6% speedup when linking clang and chrome.
Diffstat (limited to 'lld/ELF/SyntheticSections.cpp')
| -rw-r--r-- | lld/ELF/SyntheticSections.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp index aef6434..9944877 100644 --- a/lld/ELF/SyntheticSections.cpp +++ b/lld/ELF/SyntheticSections.cpp @@ -1239,7 +1239,7 @@ StringTableSection::StringTableSection(StringRef name, bool dynamic) // them with some other string that happens to be the same. unsigned StringTableSection::addString(StringRef s, bool hashIt) { if (hashIt) { - auto r = stringMap.insert(std::make_pair(s, this->size)); + auto r = stringMap.try_emplace(CachedHashStringRef(s), size); if (!r.second) return r.first->second; } |