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| author | Fangrui Song <i@maskray.me> | 2021-12-17 23:30:42 -0800 |
|---|---|---|
| committer | Fangrui Song <i@maskray.me> | 2021-12-17 23:30:42 -0800 |
| commit | 3aae04c744b03eb3eec7376f9d34fa3e42f8d108 (patch) | |
| tree | 9d34b896e751d52217e27a841b193b558cc434b2 /lld/ELF/SyntheticSections.cpp | |
| parent | 4e310d89f22303873c952a9ca5ca91c921407336 (diff) | |
| download | llvm-3aae04c744b03eb3eec7376f9d34fa3e42f8d108.zip llvm-3aae04c744b03eb3eec7376f9d34fa3e42f8d108.tar.gz llvm-3aae04c744b03eb3eec7376f9d34fa3e42f8d108.tar.bz2 | |
[ELF] Parallelize MergeNoTailSection::writeTo
With this patch, writing .debug_str is significantly for a program with
1.5G .debug_str:
* .debug_info 1.22s
* .debug_str 2.57s decreases to 0.66
Diffstat (limited to 'lld/ELF/SyntheticSections.cpp')
| -rw-r--r-- | lld/ELF/SyntheticSections.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp index 4e4c4c0..884798e 100644 --- a/lld/ELF/SyntheticSections.cpp +++ b/lld/ELF/SyntheticSections.cpp @@ -3256,8 +3256,8 @@ void MergeTailSection::finalizeContents() { } void MergeNoTailSection::writeTo(uint8_t *buf) { - for (size_t i = 0; i < numShards; ++i) - shards[i].write(buf + shardOffsets[i]); + parallelForEachN(0, numShards, + [&](size_t i) { shards[i].write(buf + shardOffsets[i]); }); } // This function is very hot (i.e. it can take several seconds to finish) |