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//===-- AttributeImpl.h - Attribute Internals -------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file defines various helper methods and classes used by
/// LLVMContextImpl for creating and managing attributes.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_ATTRIBUTESIMPL_H
#define LLVM_ATTRIBUTESIMPL_H
#include "llvm/ADT/FoldingSet.h"
#include "llvm/Attributes.h"
namespace llvm {
class Constant;
class LLVMContext;
//===----------------------------------------------------------------------===//
/// \class
/// \brief This class represents a single, uniqued attribute. That attribute
/// could be a single enum, a tuple, or a string. It uses a discriminated union
/// to distinguish them.
class AttributeImpl : public FoldingSetNode {
Constant *Data;
public:
AttributeImpl(LLVMContext &C, uint64_t data);
bool hasAttribute(uint64_t A) const;
bool hasAttributes() const;
bool hasAttributes(const Attribute &A) const;
uint64_t getAlignment() const;
uint64_t getStackAlignment() const;
uint64_t getBitMask() const; // FIXME: Remove.
static uint64_t getAttrMask(uint64_t Val);
void Profile(FoldingSetNodeID &ID) const {
Profile(ID, Data);
}
static void Profile(FoldingSetNodeID &ID, Constant *Data);
};
//===----------------------------------------------------------------------===//
/// \class
/// \brief This class represents a set of attributes.
class AttributeSetImpl : public FoldingSetNode {
// AttributesList is uniqued, these should not be publicly available.
void operator=(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
AttributeSetImpl(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
public:
LLVMContext &Context;
SmallVector<AttributeWithIndex, 4> Attrs;
AttributeSetImpl(LLVMContext &C, ArrayRef<AttributeWithIndex> attrs)
: Context(C), Attrs(attrs.begin(), attrs.end()) {}
void Profile(FoldingSetNodeID &ID) const {
Profile(ID, Attrs);
}
static void Profile(FoldingSetNodeID &ID, ArrayRef<AttributeWithIndex> Attrs){
for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
ID.AddInteger(Attrs[i].Attrs.getBitMask());
ID.AddInteger(Attrs[i].Index);
}
}
};
} // end llvm namespace
#endif
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