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There is only one current section.

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Both MCStreamer and MCObjectStreamer were maintaining a current section
variable and they were slightly out of sync. I don't think this was observable,
but was inefficient and error prone.

Changing this requires a few cascading changes:

* SwitchSection has to call ChangeSection earlier for ChangeSection to see
  the old section.
* With that change, ChangeSection cannot call EmitLabel, since during
  ChangeSection we are still in the old section.
* When the object streamer requires a begin label, just reused the existing
  generic support for begin labels instead of calling EmitLabel directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238357 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2015-05-27 20:52:32 +00:00
parent 8cc212a07e
commit 41cea417fa
8 changed files with 34 additions and 26 deletions
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8
lib/MC/MCParser/ELFAsmParser.cpp
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@@ -537,9 +537,11 @@ EndStmt:
if (getContext().getDwarfVersion() <= 2)
Warning(loc, "DWARF2 only supports one section per compilation unit");
MCSymbol *SectionStartSymbol = getContext().createTempSymbol();
getStreamer().EmitLabel(SectionStartSymbol);
ELFSection->setBeginSymbol(SectionStartSymbol);
if (!ELFSection->getBeginSymbol()) {
MCSymbol *SectionStartSymbol = getContext().createTempSymbol();
getStreamer().EmitLabel(SectionStartSymbol);
ELFSection->setBeginSymbol(SectionStartSymbol);
}
}
}