1 //===-- AttributeImpl.h - Attribute Internals -------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief This file defines various helper methods and classes used by
12 /// LLVMContextImpl for creating and managing attributes.
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_ATTRIBUTESIMPL_H
17 #define LLVM_ATTRIBUTESIMPL_H
19 #include "llvm/ADT/FoldingSet.h"
20 #include "llvm/IR/Attributes.h"
28 //===----------------------------------------------------------------------===//
30 /// \brief This class represents a single, uniqued attribute. That attribute
31 /// could be a single enum, a tuple, or a string.
32 class AttributeImpl : public FoldingSetNode {
35 SmallVector<Constant*, 0> Vals;
37 // AttributesImpl is uniqued, these should not be publicly available.
38 void operator=(const AttributeImpl &) LLVM_DELETED_FUNCTION;
39 AttributeImpl(const AttributeImpl &) LLVM_DELETED_FUNCTION;
41 AttributeImpl(LLVMContext &C, Constant *Data)
42 : Context(C), Data(Data) {}
43 explicit AttributeImpl(LLVMContext &C, Attribute::AttrKind data);
44 AttributeImpl(LLVMContext &C, Attribute::AttrKind data,
45 ArrayRef<Constant*> values);
46 AttributeImpl(LLVMContext &C, StringRef data);
48 bool hasAttribute(Attribute::AttrKind A) const;
49 bool hasAttributes() const;
51 LLVMContext &getContext() { return Context; }
52 ArrayRef<Constant*> getValues() const { return Vals; }
54 uint64_t getAlignment() const;
55 uint64_t getStackAlignment() const;
57 bool operator==(Attribute::AttrKind Kind) const;
58 bool operator!=(Attribute::AttrKind Kind) const;
60 bool operator==(StringRef Kind) const;
61 bool operator!=(StringRef Kind) const;
63 bool operator<(const AttributeImpl &AI) const;
65 void Profile(FoldingSetNodeID &ID) const {
66 Profile(ID, Data, Vals);
68 static void Profile(FoldingSetNodeID &ID, Constant *Data,
69 ArrayRef<Constant*> Vals) {
71 for (unsigned I = 0, E = Vals.size(); I != E; ++I)
72 ID.AddPointer(Vals[I]);
75 // FIXME: Remove these!
77 static uint64_t getAttrMask(Attribute::AttrKind Val);
80 //===----------------------------------------------------------------------===//
82 /// \brief This class represents a group of attributes that apply to one
83 /// element: function, return type, or parameter.
84 class AttributeSetNode : public FoldingSetNode {
85 SmallVector<Attribute, 4> AttrList;
87 AttributeSetNode(ArrayRef<Attribute> Attrs)
88 : AttrList(Attrs.begin(), Attrs.end()) {}
90 // AttributesSetNode is uniqued, these should not be publicly available.
91 void operator=(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
92 AttributeSetNode(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
94 static AttributeSetNode *get(LLVMContext &C, ArrayRef<Attribute> Attrs);
96 bool hasAttribute(Attribute::AttrKind Kind) const;
97 bool hasAttributes() const { return !AttrList.empty(); }
99 unsigned getAlignment() const;
100 unsigned getStackAlignment() const;
101 std::string getAsString() const;
103 typedef SmallVectorImpl<Attribute>::iterator iterator;
104 typedef SmallVectorImpl<Attribute>::const_iterator const_iterator;
106 iterator begin() { return AttrList.begin(); }
107 iterator end() { return AttrList.end(); }
109 const_iterator begin() const { return AttrList.begin(); }
110 const_iterator end() const { return AttrList.end(); }
112 void Profile(FoldingSetNodeID &ID) const {
113 Profile(ID, AttrList);
115 static void Profile(FoldingSetNodeID &ID, ArrayRef<Attribute> AttrList) {
116 for (unsigned I = 0, E = AttrList.size(); I != E; ++I)
117 AttrList[I].Profile(ID);
121 //===----------------------------------------------------------------------===//
123 /// \brief This class represents a set of attributes that apply to the function,
124 /// return type, and parameters.
125 class AttributeSetImpl : public FoldingSetNode {
126 friend class AttributeSet;
128 LLVMContext &Context;
130 typedef std::pair<unsigned, AttributeSetNode*> IndexAttrPair;
131 SmallVector<IndexAttrPair, 4> AttrNodes;
133 // AttributesSet is uniqued, these should not be publicly available.
134 void operator=(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
135 AttributeSetImpl(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
137 AttributeSetImpl(LLVMContext &C,
138 ArrayRef<std::pair<unsigned, AttributeSetNode*> > attrs)
139 : Context(C), AttrNodes(attrs.begin(), attrs.end()) {}
141 /// \brief Get the context that created this AttributeSetImpl.
142 LLVMContext &getContext() { return Context; }
144 /// \brief Return the number of attributes this AttributeSet contains.
145 unsigned getNumAttributes() const { return AttrNodes.size(); }
147 /// \brief Get the index of the given "slot" in the AttrNodes list. This index
148 /// is the index of the return, parameter, or function object that the
149 /// attributes are applied to, not the index into the AttrNodes list where the
150 /// attributes reside.
151 uint64_t getSlotIndex(unsigned Slot) const {
152 return AttrNodes[Slot].first;
155 /// \brief Retrieve the attributes for the given "slot" in the AttrNode list.
156 /// \p Slot is an index into the AttrNodes list, not the index of the return /
157 /// parameter/ function which the attributes apply to.
158 AttributeSet getSlotAttributes(unsigned Slot) const {
159 // FIXME: This needs to use AttrNodes instead.
160 return AttributeSet::get(Context, AttrNodes[Slot]);
163 /// \brief Retrieve the attribute set node for the given "slot" in the
165 AttributeSetNode *getSlotNode(unsigned Slot) const {
166 return AttrNodes[Slot].second;
169 typedef AttributeSetNode::iterator iterator;
170 typedef AttributeSetNode::const_iterator const_iterator;
172 iterator begin(unsigned Idx)
173 { return AttrNodes[Idx].second->begin(); }
174 iterator end(unsigned Idx)
175 { return AttrNodes[Idx].second->end(); }
177 const_iterator begin(unsigned Idx) const
178 { return AttrNodes[Idx].second->begin(); }
179 const_iterator end(unsigned Idx) const
180 { return AttrNodes[Idx].second->end(); }
182 void Profile(FoldingSetNodeID &ID) const {
183 Profile(ID, AttrNodes);
185 static void Profile(FoldingSetNodeID &ID,
186 ArrayRef<std::pair<unsigned, AttributeSetNode*> > Nodes) {
187 for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
188 ID.AddInteger(Nodes[i].first);
189 ID.AddPointer(Nodes[i].second);
193 // FIXME: This atrocity is temporary.
194 uint64_t Raw(uint64_t Index) const;
197 } // end llvm namespace