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MC: introduce ability to restrict recorded relocations

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Add support to allow a target specific COFF object writer to restrict the
recorded resolutions in the emitted object files.  This is motivated by the need
in Windows on ARM, where an intermediate relocation needs to be prevented from
being emitted in the object file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209336 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool 2014-05-21 23:17:50 +00:00
parent 111bad385a
commit 159ccc8f51
2 changed files with 3 additions and 1 deletions
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1
include/llvm/MC/MCWinCOFFObjectWriter.h
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@ -30,6 +30,7 @@ namespace llvm {
virtual unsigned getRelocType(const MCValue &Target,
const MCFixup &Fixup,
bool IsCrossSection) const = 0;
virtual bool recordRelocation(const MCFixup &) const { return true; }
};
/// \brief Construct a new Win COFF writer instance.

3
lib/MC/WinCOFFObjectWriter.cpp
View File

@ -808,7 +808,8 @@ void WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm,
}
}
coff_section->Relocations.push_back(Reloc);
if (TargetObjectWriter->recordRelocation(Fixup))
coff_section->Relocations.push_back(Reloc);
}
void WinCOFFObjectWriter::WriteObject(MCAssembler &Asm,