mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-28 06:29:45 +00:00
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
|
//===-- llvm/TypeFinder.h - Class for finding used struct types -*- C++ -*-===//
|
||
|
//
|
||
|
// The LLVM Compiler Infrastructure
|
||
|
//
|
||
|
// This file is distributed under the University of Illinois Open Source
|
||
|
// License. See LICENSE.TXT for details.
|
||
|
//
|
||
|
//===----------------------------------------------------------------------===//
|
||
|
//
|
||
|
// This file contains the declaration of the TypeFinder class.
|
||
|
//
|
||
|
//===----------------------------------------------------------------------===//
|
||
|
|
||
|
#ifndef LLVM_TYPEFINDER_H
|
||
|
#define LLVM_TYPEFINDER_H
|
||
|
|
||
|
#include "llvm/ADT/DenseSet.h"
|
||
|
#include <vector>
|
||
|
|
||
|
namespace llvm {
|
||
|
|
||
|
class MDNode;
|
||
|
class Module;
|
||
|
class StructType;
|
||
|
class Type;
|
||
|
class Value;
|
||
|
|
||
|
/// TypeFinder - Walk over a module, identifying all of the types that are
|
||
|
/// used by the module.
|
||
|
class TypeFinder {
|
||
|
// To avoid walking constant expressions multiple times and other IR
|
||
|
// objects, we keep several helper maps.
|
||
|
DenseSet<const Value*> VisitedConstants;
|
||
|
DenseSet<Type*> VisitedTypes;
|
||
|
|
||
|
std::vector<StructType*> StructTypes;
|
||
|
bool OnlyNamed;
|
||
|
|
||
|
public:
|
||
|
TypeFinder() : OnlyNamed(false) {}
|
||
|
|
||
|
void run(const Module &M, bool onlyNamed);
|
||
|
void clear();
|
||
|
|
||
|
typedef std::vector<StructType*>::iterator iterator;
|
||
|
typedef std::vector<StructType*>::const_iterator const_iterator;
|
||
|
|
||
|
iterator begin() { return StructTypes.begin(); }
|
||
|
iterator end() { return StructTypes.end(); }
|
||
|
|
||
|
const_iterator begin() const { return StructTypes.begin(); }
|
||
|
const_iterator end() const { return StructTypes.end(); }
|
||
|
|
||
|
bool empty() const { return StructTypes.empty(); }
|
||
|
size_t size() const { return StructTypes.size(); }
|
||
|
iterator erase(iterator I, iterator E) { return StructTypes.erase(I, E); }
|
||
|
|
||
|
StructType *&operator[](unsigned Idx) { return StructTypes[Idx]; }
|
||
|
|
||
|
private:
|
||
|
/// incorporateType - This method adds the type to the list of used
|
||
|
/// structures if it's not in there already.
|
||
|
void incorporateType(Type *Ty);
|
||
|
|
||
|
/// incorporateValue - This method is used to walk operand lists finding types
|
||
|
/// hiding in constant expressions and other operands that won't be walked in
|
||
|
/// other ways. GlobalValues, basic blocks, instructions, and inst operands
|
||
|
/// are all explicitly enumerated.
|
||
|
void incorporateValue(const Value *V);
|
||
|
|
||
|
/// incorporateMDNode - This method is used to walk the operands of an MDNode
|
||
|
/// to find types hiding within.
|
||
|
void incorporateMDNode(const MDNode *V);
|
||
|
};
|
||
|
|
||
|
} // end llvm namespace
|
||
|
|
||
|
#endif
|