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Improve comments, add support for remembering the constants strings that

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are to be emitted.

llvm-svn: 10866
This commit is contained in:
Chris Lattner 2004-01-14 23:37:43 +00:00
parent 7ad2ec9e20
commit 71acf2763d
1 changed files with 27 additions and 14 deletions
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41
include/llvm/SlotCalculator.h
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@ -29,32 +29,37 @@ class Value;
class Module;
class Function;
class SymbolTable;
class ConstantArray;
class SlotCalculator {
const Module *TheModule;
// BuildBytecodeInfo - If true, this is the creating information for the
// bytecode writer, if false, we are building information for the assembly
// emitter. The assembly emitter doesn't need named objects numbered, among
// other differences.
/// BuildBytecodeInfo - If true, this is the creating information for the
/// bytecode writer, if false, we are building information for the assembly
/// emitter. The assembly emitter doesn't need named objects numbered, among
/// other differences.
bool BuildBytecodeInfo;
typedef std::vector<const Value*> TypePlane;
std::vector<TypePlane> Table;
std::map<const Value *, unsigned> NodeMap;
std::map<const Value*, unsigned> NodeMap;
// ModuleLevel - Used to keep track of which values belong to the module,
// and which values belong to the currently incorporated function.
//
/// ConstantStrings - If we are indexing for a bytecode file, this keeps track
/// of all of the constants strings that need to be emitted.
std::vector<const ConstantArray*> ConstantStrings;
/// ModuleLevel - Used to keep track of which values belong to the module,
/// and which values belong to the currently incorporated function.
///
std::vector<unsigned> ModuleLevel;
public:
SlotCalculator(const Module *M, bool BuildBytecodeInfo);
// Start out in incorp state
SlotCalculator(const Function *M, bool BuildBytecodeInfo);
inline ~SlotCalculator() {}
SlotCalculator(const Function *F, bool BuildBytecodeInfo);
// getSlot returns < 0 on error!
/// getSlot returns < 0 on error!
///
int getSlot(const Value *D) const;
inline unsigned getNumPlanes() const { return Table.size(); }
@ -66,12 +71,20 @@ public:
return Table[Plane];
}
// If you'd like to deal with a function, use these two methods to get its
// data into the SlotCalculator!
//
/// incorporateFunction/purgeFunction - If you'd like to deal with a function,
/// use these two methods to get its data into the SlotCalculator!
///
void incorporateFunction(const Function *F);
void purgeFunction();
/// string_iterator/string_begin/end - Access the list of module-level
/// constant strings that have been incorporated. This is only applicable to
/// bytecode files.
typedef std::vector<const ConstantArray*>::const_iterator string_iterator;
string_iterator string_begin() const { return ConstantStrings.begin(); }
string_iterator string_end() const { return ConstantStrings.end(); }
protected:
// getOrCreateSlot - Values can be crammed into here at will... if
// they haven't been inserted already, they get inserted, otherwise