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//===-- llvm/Analysis/SlotCalculator.h - Calculate value slots ---*- C++ -*-==//
//
// This ModuleAnalyzer subclass calculates the slots that values will land in.
// This is useful for when writing bytecode or assembly out, because you have
// to know these things.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_SLOTCALCULATOR_H
#define LLVM_ANALYSIS_SLOTCALCULATOR_H
#include "llvm/SymTabValue.h"
#include <vector>
#include <map>
class Value;
class Module;
class Function;
class MethodArgument;
class BasicBlock;
class Instruction;
class SlotCalculator {
const Module *TheModule;
bool IgnoreNamedNodes; // Shall we not count named nodes?
typedef std::vector<const Value*> TypePlane;
std::vector<TypePlane> Table;
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 method.
//
std::vector<unsigned> ModuleLevel;
public:
SlotCalculator(const Module *M, bool IgnoreNamed);
// Start out in incorp state
SlotCalculator(const Function *M, bool IgnoreNamed);
inline ~SlotCalculator() {}
// getValSlot returns < 0 on error!
int getValSlot(const Value *D) const;
inline unsigned getNumPlanes() const { return Table.size(); }
inline unsigned getModuleLevel(unsigned Plane) const {
return Plane < ModuleLevel.size() ? ModuleLevel[Plane] : 0;
}
inline const TypePlane &getPlane(unsigned Plane) const {
return Table[Plane];
}
// If you'd like to deal with a method, use these two methods to get its data
// into the SlotCalculator!
//
void incorporateMethod(const Function *F);
void purgeMethod();
protected:
// insertVal - Insert a value into the value table... Return the slot that it
// occupies, or -1 if the declaration is to be ignored because of the
// IgnoreNamedNodes flag.
//
int insertVal(const Value *D, bool dontIgnore = false);
// insertValue - Values can be crammed into here at will... if they haven't
// been inserted already, they get inserted, otherwise they are ignored.
//
int insertValue(const Value *D);
// doInsertVal - Small helper function to be called only be insertVal.
int doInsertVal(const Value *D);
// processModule - Process all of the module level method declarations and
// types that are available.
//
void processModule();
// processSymbolTable - Insert all of the values in the specified symbol table
// into the values table...
//
void processSymbolTable(const SymbolTable *ST);
void processSymbolTableConstants(const SymbolTable *ST);
};
#endif
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