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author | Fangrui Song <i@maskray.me> | 2022-01-25 23:33:40 -0800 |
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committer | Fangrui Song <i@maskray.me> | 2022-01-25 23:33:40 -0800 |
commit | 571d6a7120c2b637db2bb46fe3029f9d8576ab86 (patch) | |
tree | 662237d6415df5ebe60d95ea5a17e5af18a53b19 /lld/ELF/SyntheticSections.cpp | |
parent | f563bd74cb9a4f0d2d3eb49d35536b648361ec53 (diff) | |
download | llvm-571d6a7120c2b637db2bb46fe3029f9d8576ab86.zip llvm-571d6a7120c2b637db2bb46fe3029f9d8576ab86.tar.gz llvm-571d6a7120c2b637db2bb46fe3029f9d8576ab86.tar.bz2 |
[ELF] Optimize .relr.dyn to not grow vector<uint64_t>. NFC
Diffstat (limited to 'lld/ELF/SyntheticSections.cpp')
-rw-r--r-- | lld/ELF/SyntheticSections.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp index 9f0cbf9..f442aca 100644 --- a/lld/ELF/SyntheticSections.cpp +++ b/lld/ELF/SyntheticSections.cpp @@ -2024,14 +2024,14 @@ template <class ELFT> bool RelrSection<ELFT>::updateAllocSize() { const size_t nBits = wordsize * 8 - 1; // Get offsets for all relative relocations and sort them. - std::vector<uint64_t> offsets; - for (const RelativeReloc &rel : relocs) - offsets.push_back(rel.getOffset()); - llvm::sort(offsets); + std::unique_ptr<uint64_t[]> offsets(new uint64_t[relocs.size()]); + for (auto it : llvm::enumerate(relocs)) + offsets[it.index()] = it.value().getOffset(); + std::sort(offsets.get(), offsets.get() + relocs.size()); // For each leading relocation, find following ones that can be folded // as a bitmap and fold them. - for (size_t i = 0, e = offsets.size(); i < e;) { + for (size_t i = 0, e = relocs.size(); i != e;) { // Add a leading relocation. relrRelocs.push_back(Elf_Relr(offsets[i])); uint64_t base = offsets[i] + wordsize; |