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Extend some comments around GCModuleInfo, GCFunctionInfo, & GCStrategy

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Nothing particularly interesting here, just documenting the way the code currently works before I start changing it...



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223866 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Philip Reames 2014-12-10 00:30:11 +00:00
parent 24d058a523
commit f8225ab80f
2 changed files with 8 additions and 5 deletions
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9
include/llvm/CodeGen/GCMetadata.h
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@ -80,8 +80,8 @@ namespace llvm {
};
/// GCFunctionInfo - Garbage collection metadata for a single function.
///
/// Garbage collection metadata for a single function. Currently, this
/// information only applies to GCStrategies which use GCRoot.
class GCFunctionInfo {
public:
typedef std::vector<GCPoint>::iterator iterator;
@ -161,8 +161,9 @@ namespace llvm {
};
/// GCModuleInfo - Garbage collection metadata for a whole module.
///
/// An analysis pass which caches information about the entire Module.
/// Records both the function level information used by GCRoots and a
/// cache of the 'active' gc strategy objects for the current Module.
class GCModuleInfo : public ImmutablePass {
typedef StringMap<GCStrategy*> strategy_map_type;
typedef std::vector<std::unique_ptr<GCStrategy>> list_type;

4
include/llvm/CodeGen/GCStrategy.h
View File

@ -51,7 +51,9 @@ namespace llvm {
/// GCStrategy describes a garbage collector algorithm's code generation
/// requirements, and provides overridable hooks for those needs which cannot
/// be abstractly described.
/// be abstractly described. GCStrategy objects currently must be looked up
/// through the GCModuleInfo analysis pass. They are owned by the analysis
/// pass and recreated every time that pass is invalidated.
class GCStrategy {
public:
typedef std::vector<std::unique_ptr<GCFunctionInfo>> list_type;