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move elf section uniquing to MCContext. Along the way

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merge XCore's section into MCSectionELF


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100812 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-04-08 21:26:26 +00:00
parent 2d16a67b94
commit 74aae4726a
18 changed files with 165 additions and 268 deletions
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20
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
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@ -38,34 +38,16 @@ using namespace dwarf;
//===----------------------------------------------------------------------===//
// ELF
//===----------------------------------------------------------------------===//
typedef StringMap<const MCSectionELF*> ELFUniqueMapTy;
TargetLoweringObjectFileELF::~TargetLoweringObjectFileELF() {
// If we have the section uniquing map, free it.
delete (ELFUniqueMapTy*)UniquingMap;
}
const MCSection *TargetLoweringObjectFileELF::
getELFSection(StringRef Section, unsigned Type, unsigned Flags,
SectionKind Kind, bool IsExplicit) const {
if (UniquingMap == 0)
UniquingMap = new ELFUniqueMapTy();
ELFUniqueMapTy &Map = *(ELFUniqueMapTy*)UniquingMap;
return getContext().getELFSection(Section, Type, Flags, Kind, IsExplicit);
// Do the lookup, if we have a hit, return it.
StringMapEntry<const MCSectionELF*> &Entry = Map.GetOrCreateValue(Section);
if (Entry.getValue()) return Entry.getValue();
MCSectionELF *Result = MCSectionELF::Create(Entry.getKey(), Type, Flags, Kind,
IsExplicit, getContext());
Entry.setValue(Result);
return Result;
}
void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
const TargetMachine &TM) {
if (UniquingMap != 0)
((ELFUniqueMapTy*)UniquingMap)->clear();
TargetLoweringObjectFile::Initialize(Ctx, TM);
BSSSection =