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create sections with MCSection::Create instead of Context->getOrCreateSection.

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This is needed to allow polymorphic sections.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77680 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-07-31 16:43:49 +00:00
parent 82987bfe9b
commit fcdbf4ecc3
3 changed files with 23 additions and 14 deletions
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6
include/llvm/MC/MCContext.h
View File

@ -42,12 +42,14 @@ namespace llvm {
/// objects.
BumpPtrAllocator Allocator;
friend class MCSection;
public:
MCContext();
~MCContext();
/// GetSection - Get or create a new section with the given @param Name.
MCSection *GetSection(const StringRef &Name);
/// GetSection - Look up a section with the given @param Name, returning
/// null if it doesn't exist.
MCSection *GetSection(const StringRef &Name) const;
/// CreateSymbol - Create a new symbol with the specified @param Name.
///

6
include/llvm/MC/MCSection.h
View File

@ -25,13 +25,13 @@ namespace llvm {
class MCSection {
std::string Name;
private:
friend class MCContext;
MCSection(const StringRef &_Name) : Name(_Name) {}
MCSection(const MCSection&); // DO NOT IMPLEMENT
void operator=(const MCSection&); // DO NOT IMPLEMENT
MCSection(const StringRef &_Name, MCContext &Ctx);
public:
static MCSection *Create(const StringRef &_Name, MCContext &Ctx);
const std::string &getName() const { return Name; }
};

25
lib/MC/MCContext.cpp
View File

@ -14,22 +14,29 @@
#include "llvm/MC/MCValue.h"
using namespace llvm;
MCContext::MCContext()
{
MCContext::MCContext() {
}
MCContext::~MCContext() {
}
MCSection *MCContext::GetSection(const StringRef &Name) {
MCSection *&Entry = Sections[Name];
if (!Entry)
Entry = new (*this) MCSection(Name);
return Entry;
MCSection *MCContext::GetSection(const StringRef &Name) const {
StringMap<MCSection*>::const_iterator I = Sections.find(Name);
return I != Sections.end() ? I->second : 0;
}
MCSection::MCSection(const StringRef &_Name, MCContext &Ctx) : Name(_Name) {
MCSection *&Entry = Ctx.Sections[Name];
assert(Entry == 0 && "Multiple sections with the same name created");
Entry = this;
}
MCSection *MCSection::Create(const StringRef &Name, MCContext &Ctx) {
return new (Ctx) MCSection(Name, Ctx);
}
MCSymbol *MCContext::CreateSymbol(const StringRef &Name) {
assert(Name[0] != '\0' && "Normal symbols cannot be unnamed!");