diff options
Diffstat (limited to 'llvm/lib/MC/ELFObjectWriter.cpp')
| -rw-r--r-- | llvm/lib/MC/ELFObjectWriter.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/llvm/lib/MC/ELFObjectWriter.cpp b/llvm/lib/MC/ELFObjectWriter.cpp index 8cb01c43edd..b293afc56a0 100644 --- a/llvm/lib/MC/ELFObjectWriter.cpp +++ b/llvm/lib/MC/ELFObjectWriter.cpp @@ -943,6 +943,8 @@ void ELFObjectWriter::computeIndexMap(MCAssembler &Asm, SectionIndexMap[&Section] = Index++; } + std::vector<const MCSectionELF *> RelSections; + for (MCAssembler::iterator it = Asm.begin(), ie = Asm.end(); it != ie; ++it) { const MCSectionData &SD = *it; @@ -956,9 +958,14 @@ void ELFObjectWriter::computeIndexMap(MCAssembler &Asm, if (MCSectionData *RelSD = createRelocationSection(Asm, SD)) { const MCSectionELF *RelSection = static_cast<const MCSectionELF *>(&RelSD->getSection()); - SectionIndexMap[RelSection] = Index++; + RelSections.push_back(RelSection); } } + + // Put relocation sections close together. The linker reads them + // first, so this improves cache locality. + for (const MCSectionELF * Sec: RelSections) + SectionIndexMap[Sec] = Index++; } void ELFObjectWriter::computeSymbolTable( |
