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//===- ValueMapper.h - Remapping for constants and metadata -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the MapValue interface which is used by various parts of
// the Transforms/Utils library to implement cloning and linking facilities.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_UTILS_VALUEMAPPER_H
#define LLVM_TRANSFORMS_UTILS_VALUEMAPPER_H
#include "llvm/ADT/ValueMap.h"
namespace llvm {
class Value;
class Instruction;
typedef ValueMap<const Value *, TrackingVH<Value> > ValueToValueMapTy;
/// RemapFlags - These are flags that the value mapping APIs allow.
enum RemapFlags {
RF_None = 0,
/// RF_NoModuleLevelChanges - If this flag is set, the remapper knows that
/// only local values within a function (such as an instruction or argument)
/// are mapped, not global values like functions and global metadata.
RF_NoModuleLevelChanges = 1,
/// RF_IgnoreMissingEntries - If this flag is set, the remapper ignores
/// entries that are not in the value map. If it is unset, it aborts if an
/// operand is asked to be remapped which doesn't exist in the mapping.
RF_IgnoreMissingEntries = 2
};
static inline RemapFlags operator|(RemapFlags LHS, RemapFlags RHS) {
return RemapFlags(unsigned(LHS)|unsigned(RHS));
}
Value *MapValue(const Value *V, ValueToValueMapTy &VM,
RemapFlags Flags = RF_None);
void RemapInstruction(Instruction *I, ValueToValueMapTy &VM,
RemapFlags Flags = RF_None);
} // End llvm namespace
#endif
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