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Use SpecificBumpPtrAllocator to simplify the MCSeciton destruction.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249589 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2015-10-07 19:08:19 +00:00
parent a894b7377d
commit d546ca6a18
2 changed files with 15 additions and 14 deletions
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4
include/llvm/MC/MCContext.h
View File

@ -71,6 +71,10 @@ namespace llvm {
/// objects.
BumpPtrAllocator Allocator;
SpecificBumpPtrAllocator<MCSectionCOFF> COFFAllocator;
SpecificBumpPtrAllocator<MCSectionELF> ELFAllocator;
SpecificBumpPtrAllocator<MCSectionMachO> MachOAllocator;
/// Bindings of names to symbols.
SymbolTable Symbols;

25
lib/MC/MCContext.cpp
View File

@ -74,12 +74,9 @@ MCContext::~MCContext() {
void MCContext::reset() {
// Call the destructors so the fragments are freed
for (auto &I : ELFUniquingMap)
I.second->~MCSectionELF();
for (auto &I : COFFUniquingMap)
I.second->~MCSectionCOFF();
for (auto &I : MachOUniquingMap)
I.second->~MCSectionMachO();
COFFAllocator.DestroyAll();
ELFAllocator.DestroyAll();
MachOAllocator.DestroyAll();
UsedNames.clear();
Symbols.clear();
@ -294,8 +291,8 @@ MCSectionMachO *MCContext::getMachOSection(StringRef Segment, StringRef Section,
Begin = createTempSymbol(BeginSymName, false);
// Otherwise, return a new section.
return Entry = new (*this) MCSectionMachO(Segment, Section, TypeAndAttributes,
Reserved2, Kind, Begin);
return Entry = new (MachOAllocator.Allocate()) MCSectionMachO(
Segment, Section, TypeAndAttributes, Reserved2, Kind, Begin);
}
void MCContext::renameELFSection(MCSectionELF *Section, StringRef Name) {
@ -322,7 +319,7 @@ MCSectionELF *MCContext::createELFRelSection(StringRef Name, unsigned Type,
bool Inserted;
std::tie(I, Inserted) = ELFRelSecNames.insert(std::make_pair(Name, true));
return new (*this)
return new (ELFAllocator.Allocate())
MCSectionELF(I->getKey(), Type, Flags, SectionKind::getReadOnly(),
EntrySize, Group, true, nullptr, Associated);
}
@ -367,15 +364,15 @@ MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
if (BeginSymName)
Begin = createTempSymbol(BeginSymName, false);
MCSectionELF *Result =
new (*this) MCSectionELF(CachedName, Type, Flags, Kind, EntrySize,
GroupSym, UniqueID, Begin, Associated);
MCSectionELF *Result = new (ELFAllocator.Allocate())
MCSectionELF(CachedName, Type, Flags, Kind, EntrySize, GroupSym, UniqueID,
Begin, Associated);
Entry.second = Result;
return Result;
}
MCSectionELF *MCContext::createELFGroupSection(const MCSymbolELF *Group) {
MCSectionELF *Result = new (*this)
MCSectionELF *Result = new (ELFAllocator.Allocate())
MCSectionELF(".group", ELF::SHT_GROUP, 0, SectionKind::getReadOnly(), 4,
Group, ~0, nullptr, nullptr);
return Result;
@ -404,7 +401,7 @@ MCSectionCOFF *MCContext::getCOFFSection(StringRef Section,
Begin = createTempSymbol(BeginSymName, false);
StringRef CachedName = Iter->first.SectionName;
MCSectionCOFF *Result = new (*this) MCSectionCOFF(
MCSectionCOFF *Result = new (COFFAllocator.Allocate()) MCSectionCOFF(
CachedName, Characteristics, COMDATSymbol, Selection, Kind, Begin);
Iter->second = Result;