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Avoid an infinite cycle with private linkage and -f{data|function}-sections.

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When outputting an object we check its section to find its name, but when
looking for the section with -ffunction-section we look for the symbol name.

Break the loop by requesting a name with the private prefix when constructing
the section name. This matches the behavior before r201608.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201622 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-02-19 01:28:30 +00:00
parent 7a8ca279cd
commit faaa553274
4 changed files with 15 additions and 6 deletions
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6
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
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@ -248,12 +248,12 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Prefix = getSectionPrefixForGlobal(Kind);
SmallString<128> Name(Prefix, Prefix+strlen(Prefix));
MCSymbol *Sym = TM.getTargetLowering()->getSymbol(GV, Mang);
Name.append(Sym->getName().begin(), Sym->getName().end());
TM.getTargetLowering()->getNameWithPrefix(Name, GV, Mang, true);
StringRef Group = "";
unsigned Flags = getELFSectionFlags(Kind);
if (GV->isWeakForLinker()) {
Group = Sym->getName();
Group = Name.substr(strlen(Prefix));
Flags |= ELF::SHF_GROUP;
}