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Initialize the StringTable early and do it only once.

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llvm-svn: 285926
This commit is contained in:
Rafael Espindola 2016-11-03 15:43:47 +00:00
parent 7108bf36b6
commit 21d8be9a4e
2 changed files with 11 additions and 14 deletions
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23
lld/ELF/InputFiles.cpp
View File

@ -146,9 +146,9 @@ uint32_t ELFFileBase<ELFT>::getSectionIndex(const Elf_Sym &Sym) const {
}
template <class ELFT>
void ELFFileBase<ELFT>::initStringTable(ArrayRef<Elf_Shdr> Sections) {
if (!Symtab)
return;
void ELFFileBase<ELFT>::initSymtab(ArrayRef<Elf_Shdr> Sections,
const Elf_Shdr *Symtab) {
this->Symtab = Symtab;
StringTable = check(ELFObj.getStringTableForSymtab(*Symtab, Sections));
}
@ -203,11 +203,11 @@ StringRef
elf::ObjectFile<ELFT>::getShtGroupSignature(ArrayRef<Elf_Shdr> Sections,
const Elf_Shdr &Sec) {
const ELFFile<ELFT> &Obj = this->ELFObj;
const Elf_Shdr *Symtab =
check(object::getSection<ELFT>(Sections, Sec.sh_link));
const Elf_Sym *Sym = check(Obj.getSymbol(Symtab, Sec.sh_info));
StringRef Strtab = check(Obj.getStringTableForSymtab(*Symtab, Sections));
return check(Sym->getName(Strtab));
if (!this->Symtab)
this->initSymtab(Sections,
check(object::getSection<ELFT>(Sections, Sec.sh_link)));
const Elf_Sym *Sym = check(Obj.getSymbol(this->Symtab, Sec.sh_info));
return check(Sym->getName(this->StringTable));
}
template <class ELFT>
@ -312,7 +312,7 @@ void elf::ObjectFile<ELFT>::initializeSections(
}
break;
case SHT_SYMTAB:
this->Symtab = &Sec;
this->initSymtab(ObjSections, &Sec);
break;
case SHT_SYMTAB_SHNDX:
this->SymtabSHNDX = check(Obj.getSHNDXTable(Sec, ObjSections));
@ -442,7 +442,6 @@ elf::ObjectFile<ELFT>::createInputSection(const Elf_Shdr &Sec,
template <class ELFT>
void elf::ObjectFile<ELFT>::initializeSymbols(ArrayRef<Elf_Shdr> Sections) {
this->initStringTable(Sections);
Elf_Sym_Range Syms = this->getElfSymbols(false);
uint32_t NumSymbols = std::distance(Syms.begin(), Syms.end());
SymbolBodies.reserve(NumSymbols);
@ -576,7 +575,7 @@ template <class ELFT> void SharedFile<ELFT>::parseSoName() {
default:
continue;
case SHT_DYNSYM:
this->Symtab = &Sec;
this->initSymtab(Sections, &Sec);
break;
case SHT_DYNAMIC:
DynamicSec = &Sec;
@ -596,8 +595,6 @@ template <class ELFT> void SharedFile<ELFT>::parseSoName() {
if (this->VersymSec && !this->Symtab)
error("SHT_GNU_versym should be associated with symbol table");
this->initStringTable(Sections);
// DSOs are identified by soname, and they usually contain
// DT_SONAME tag in their header. But if they are missing,
// filenames are used as default sonames.

2
lld/ELF/InputFiles.h
View File

@ -114,7 +114,7 @@ protected:
const Elf_Shdr *Symtab = nullptr;
ArrayRef<Elf_Word> SymtabSHNDX;
StringRef StringTable;
void initStringTable(ArrayRef<Elf_Shdr> Sections);
void initSymtab(ArrayRef<Elf_Shdr> Sections, const Elf_Shdr *Symtab);
};
// .o file.