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add some comments: MCContext owns the MCSections, but it bump pointer allocates

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them, so it doesn't have to explicitly free them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78870 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-08-13 00:21:53 +00:00
parent e309cfa0d8
commit c9d31524ee
3 changed files with 5 additions and 4 deletions
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5
include/llvm/MC/MCContext.h
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@ -20,7 +20,9 @@ namespace llvm {
class MCSymbol; class MCSymbol;
class StringRef; class StringRef;
/// MCContext - Context object for machine code objects. /// MCContext - Context object for machine code objects. This class owns all
/// of the sections that it creates.
///
class MCContext { class MCContext {
MCContext(const MCContext&); // DO NOT IMPLEMENT MCContext(const MCContext&); // DO NOT IMPLEMENT
MCContext &operator=(const MCContext&); // DO NOT IMPLEMENT MCContext &operator=(const MCContext&); // DO NOT IMPLEMENT
@ -49,7 +51,6 @@ namespace llvm {
/// null if it doesn't exist. /// null if it doesn't exist.
MCSection *GetSection(const StringRef &Name) const; MCSection *GetSection(const StringRef &Name) const;
void SetSection(const StringRef &Name, MCSection *S) { void SetSection(const StringRef &Name, MCSection *S) {
MCSection *&Entry = Sections[Name]; MCSection *&Entry = Sections[Name];
assert(Entry == 0 && "Multiple sections with the same name created"); assert(Entry == 0 && "Multiple sections with the same name created");

2
lib/MC/MCContext.cpp
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@ -18,6 +18,8 @@ MCContext::MCContext() {
} }
MCContext::~MCContext() { MCContext::~MCContext() {
// NOTE: The sections are all allocated out of a bump pointer allocator,
// we don't need to free them here.
} }
MCSection *MCContext::GetSection(const StringRef &Name) const { MCSection *MCContext::GetSection(const StringRef &Name) const {

2
lib/Target/TargetLoweringObjectFile.cpp
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@ -708,8 +708,6 @@ getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
" section specifier"); " section specifier");
} }
return S; return S;
} }