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Don't bother creating LabelBegin for .dwo units

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This would help catch cases where we might otherwise try to reference a
dwo CU label, which would be weird - because without relocations in the
dwo file it's not generally meaningful to talk about the CU offsets
there (or, if it is, we can do so in absolute terms without using a
relocation to compute it).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221078 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie 2014-11-02 02:26:24 +00:00
parent 79e72dd73c
commit 3ee898c624
2 changed files with 8 additions and 4 deletions
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5
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -687,8 +687,9 @@ void DwarfCompileUnit::collectDeadVariables(DISubprogram SP) {
} }
void DwarfCompileUnit::emitHeader(const MCSymbol *ASectionSym) const { void DwarfCompileUnit::emitHeader(const MCSymbol *ASectionSym) const {
// Emit the compile units header. // Don't bother labeling the .dwo unit, as its offset isn't used.
Asm->OutStreamer.EmitLabel(LabelBegin); if (!Skeleton)
Asm->OutStreamer.EmitLabel(LabelBegin);
DwarfUnit::emitHeader(ASectionSym); DwarfUnit::emitHeader(ASectionSym);
} }

7
lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
View File

@ -158,8 +158,11 @@ public:
void initSection(const MCSection *Section, MCSymbol *SectionSym) { void initSection(const MCSection *Section, MCSymbol *SectionSym) {
DwarfUnit::initSection(Section); DwarfUnit::initSection(Section);
this->SectionSym = SectionSym; this->SectionSym = SectionSym;
LabelBegin =
Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID()); // Don't bother labeling the .dwo unit, as its offset isn't used.
if (!Skeleton)
LabelBegin =
Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
} }
unsigned getLength() { unsigned getLength() {