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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/IR/Attributes.h"
#include <string>
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.
class AttributeImpl : public FoldingSetNode {
LLVMContext &Context;
Constant *Kind;
SmallVector<Constant*, 0> Vals;
// AttributesImpl is uniqued, these should not be publicly available.
void operator=(const AttributeImpl &) LLVM_DELETED_FUNCTION;
AttributeImpl(const AttributeImpl &) LLVM_DELETED_FUNCTION;
public:
AttributeImpl(LLVMContext &C, Constant *Kind)
: Context(C), Kind(Kind) {}
explicit AttributeImpl(LLVMContext &C, Attribute::AttrKind data);
AttributeImpl(LLVMContext &C, Attribute::AttrKind data,
ArrayRef<Constant*> values);
AttributeImpl(LLVMContext &C, StringRef data);
LLVMContext &getContext() { return Context; }
bool hasAttribute(Attribute::AttrKind A) const;
Constant *getAttributeKind() const { return Kind; }
ArrayRef<Constant*> getAttributeValues() const { return Vals; }
uint64_t getAlignment() const;
uint64_t getStackAlignment() const;
/// \brief Equality and non-equality comparison operators.
bool operator==(Attribute::AttrKind Kind) const;
bool operator!=(Attribute::AttrKind Kind) const;
bool operator==(StringRef Kind) const;
bool operator!=(StringRef Kind) const;
/// \brief Used when sorting the attributes.
bool operator<(const AttributeImpl &AI) const;
void Profile(FoldingSetNodeID &ID) const {
Profile(ID, Kind, Vals);
}
static void Profile(FoldingSetNodeID &ID, Constant *Kind,
ArrayRef<Constant*> Vals) {
ID.AddPointer(Kind);
for (unsigned I = 0, E = Vals.size(); I != E; ++I)
ID.AddPointer(Vals[I]);
}
// FIXME: Remove these!
uint64_t Raw() const;
static uint64_t getAttrMask(Attribute::AttrKind Val);
};
//===----------------------------------------------------------------------===//
/// \class
/// \brief This class represents a group of attributes that apply to one
/// element: function, return type, or parameter.
class AttributeSetNode : public FoldingSetNode {
SmallVector<Attribute, 4> AttrList;
AttributeSetNode(ArrayRef<Attribute> Attrs)
: AttrList(Attrs.begin(), Attrs.end()) {}
// AttributesSetNode is uniqued, these should not be publicly available.
void operator=(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
AttributeSetNode(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
public:
static AttributeSetNode *get(LLVMContext &C, ArrayRef<Attribute> Attrs);
bool hasAttribute(Attribute::AttrKind Kind) const;
bool hasAttributes() const { return !AttrList.empty(); }
unsigned getAlignment() const;
unsigned getStackAlignment() const;
std::string getAsString() const;
typedef SmallVectorImpl<Attribute>::iterator iterator;
typedef SmallVectorImpl<Attribute>::const_iterator const_iterator;
iterator begin() { return AttrList.begin(); }
iterator end() { return AttrList.end(); }
const_iterator begin() const { return AttrList.begin(); }
const_iterator end() const { return AttrList.end(); }
void Profile(FoldingSetNodeID &ID) const {
Profile(ID, AttrList);
}
static void Profile(FoldingSetNodeID &ID, ArrayRef<Attribute> AttrList) {
for (unsigned I = 0, E = AttrList.size(); I != E; ++I)
AttrList[I].Profile(ID);
}
};
//===----------------------------------------------------------------------===//
/// \class
/// \brief This class represents a set of attributes that apply to the function,
/// return type, and parameters.
class AttributeSetImpl : public FoldingSetNode {
friend class AttributeSet;
LLVMContext &Context;
typedef std::pair<unsigned, AttributeSetNode*> IndexAttrPair;
SmallVector<IndexAttrPair, 4> AttrNodes;
// AttributesSet is uniqued, these should not be publicly available.
void operator=(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
AttributeSetImpl(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
public:
AttributeSetImpl(LLVMContext &C,
ArrayRef<std::pair<unsigned, AttributeSetNode*> > attrs)
: Context(C), AttrNodes(attrs.begin(), attrs.end()) {}
/// \brief Get the context that created this AttributeSetImpl.
LLVMContext &getContext() { return Context; }
/// \brief Return the number of attributes this AttributeSet contains.
unsigned getNumAttributes() const { return AttrNodes.size(); }
/// \brief Get the index of the given "slot" in the AttrNodes list. This index
/// is the index of the return, parameter, or function object that the
/// attributes are applied to, not the index into the AttrNodes list where the
/// attributes reside.
uint64_t getSlotIndex(unsigned Slot) const {
return AttrNodes[Slot].first;
}
/// \brief Retrieve the attributes for the given "slot" in the AttrNode list.
/// \p Slot is an index into the AttrNodes list, not the index of the return /
/// parameter/ function which the attributes apply to.
AttributeSet getSlotAttributes(unsigned Slot) const {
// FIXME: This needs to use AttrNodes instead.
return AttributeSet::get(Context, AttrNodes[Slot]);
}
/// \brief Retrieve the attribute set node for the given "slot" in the
/// AttrNode list.
AttributeSetNode *getSlotNode(unsigned Slot) const {
return AttrNodes[Slot].second;
}
typedef AttributeSetNode::iterator iterator;
typedef AttributeSetNode::const_iterator const_iterator;
iterator begin(unsigned Idx)
{ return AttrNodes[Idx].second->begin(); }
iterator end(unsigned Idx)
{ return AttrNodes[Idx].second->end(); }
const_iterator begin(unsigned Idx) const
{ return AttrNodes[Idx].second->begin(); }
const_iterator end(unsigned Idx) const
{ return AttrNodes[Idx].second->end(); }
void Profile(FoldingSetNodeID &ID) const {
Profile(ID, AttrNodes);
}
static void Profile(FoldingSetNodeID &ID,
ArrayRef<std::pair<unsigned, AttributeSetNode*> > Nodes) {
for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
ID.AddInteger(Nodes[i].first);
ID.AddPointer(Nodes[i].second);
}
}
// FIXME: This atrocity is temporary.
uint64_t Raw(uint64_t Index) const;
};
} // end llvm namespace
#endif
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