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comparison lib/IR/AttributeImpl.h @ 3:9ad51c7bc036

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1st commit. remove git dir and add all files.
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Wed, 15 May 2013 06:43:32 +0900
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1 //===-- AttributeImpl.h - Attribute Internals -------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 ///
10 /// \file
11 /// \brief This file defines various helper methods and classes used by
12 /// LLVMContextImpl for creating and managing attributes.
13 ///
14 //===----------------------------------------------------------------------===//
15
16 #ifndef LLVM_ATTRIBUTESIMPL_H
17 #define LLVM_ATTRIBUTESIMPL_H
18
19 #include "llvm/ADT/FoldingSet.h"
20 #include "llvm/IR/Attributes.h"
21 #include <string>
22
23 namespace llvm {
24
25 class Constant;
26 class LLVMContext;
27
28 //===----------------------------------------------------------------------===//
29 /// \class
30 /// \brief A set of classes that contain the kind and (optional) value of the
31 /// attribute object. There are three main categories: enum attribute entries,
32 /// represented by Attribute::AttrKind; alignment attribute entries; and string
33 /// attribute enties, which are for target-dependent attributes.
34 class AttributeEntry {
35 unsigned char KindID;
36 protected:
37 enum AttrEntryKind {
38 EnumAttrEntry,
39 AlignAttrEntry,
40 StringAttrEntry
41 };
42 public:
43 AttributeEntry(AttrEntryKind Kind)
44 : KindID(Kind) {}
45 virtual ~AttributeEntry() {}
46
47 unsigned getKindID() const { return KindID; }
48
49 static inline bool classof(const AttributeEntry *) { return true; }
50 };
51
52 class EnumAttributeEntry : public AttributeEntry {
53 Attribute::AttrKind Kind;
54 public:
55 EnumAttributeEntry(Attribute::AttrKind Kind)
56 : AttributeEntry(EnumAttrEntry), Kind(Kind) {}
57
58 Attribute::AttrKind getEnumKind() const { return Kind; }
59
60 static inline bool classof(const AttributeEntry *AE) {
61 return AE->getKindID() == EnumAttrEntry;
62 }
63 static inline bool classof(const EnumAttributeEntry *) { return true; }
64 };
65
66 class AlignAttributeEntry : public AttributeEntry {
67 Attribute::AttrKind Kind;
68 unsigned Align;
69 public:
70 AlignAttributeEntry(Attribute::AttrKind Kind, unsigned Align)
71 : AttributeEntry(AlignAttrEntry), Kind(Kind), Align(Align) {}
72
73 Attribute::AttrKind getEnumKind() const { return Kind; }
74 unsigned getAlignment() const { return Align; }
75
76 static inline bool classof(const AttributeEntry *AE) {
77 return AE->getKindID() == AlignAttrEntry;
78 }
79 static inline bool classof(const AlignAttributeEntry *) { return true; }
80 };
81
82 class StringAttributeEntry : public AttributeEntry {
83 std::string Kind;
84 std::string Val;
85 public:
86 StringAttributeEntry(StringRef Kind, StringRef Val = StringRef())
87 : AttributeEntry(StringAttrEntry), Kind(Kind), Val(Val) {}
88
89 StringRef getStringKind() const { return Kind; }
90 StringRef getStringValue() const { return Val; }
91
92 static inline bool classof(const AttributeEntry *AE) {
93 return AE->getKindID() == StringAttrEntry;
94 }
95 static inline bool classof(const StringAttributeEntry *) { return true; }
96 };
97
98 //===----------------------------------------------------------------------===//
99 /// \class
100 /// \brief This class represents a single, uniqued attribute. That attribute
101 /// could be a single enum, a tuple, or a string.
102 class AttributeImpl : public FoldingSetNode {
103 LLVMContext &Context; ///< Global context for uniquing objects
104
105 AttributeEntry *Entry; ///< Holds the kind and value of the attribute
106
107 // AttributesImpl is uniqued, these should not be publicly available.
108 void operator=(const AttributeImpl &) LLVM_DELETED_FUNCTION;
109 AttributeImpl(const AttributeImpl &) LLVM_DELETED_FUNCTION;
110 public:
111 AttributeImpl(LLVMContext &C, Attribute::AttrKind Kind);
112 AttributeImpl(LLVMContext &C, Attribute::AttrKind Kind, unsigned Align);
113 AttributeImpl(LLVMContext &C, StringRef Kind, StringRef Val = StringRef());
114 ~AttributeImpl();
115
116 LLVMContext &getContext() { return Context; }
117
118 bool isEnumAttribute() const;
119 bool isAlignAttribute() const;
120 bool isStringAttribute() const;
121
122 bool hasAttribute(Attribute::AttrKind A) const;
123 bool hasAttribute(StringRef Kind) const;
124
125 Attribute::AttrKind getKindAsEnum() const;
126 uint64_t getValueAsInt() const;
127
128 StringRef getKindAsString() const;
129 StringRef getValueAsString() const;
130
131 /// \brief Used when sorting the attributes.
132 bool operator<(const AttributeImpl &AI) const;
133
134 void Profile(FoldingSetNodeID &ID) const {
135 if (isEnumAttribute())
136 Profile(ID, getKindAsEnum(), 0);
137 else if (isAlignAttribute())
138 Profile(ID, getKindAsEnum(), getValueAsInt());
139 else
140 Profile(ID, getKindAsString(), getValueAsString());
141 }
142 static void Profile(FoldingSetNodeID &ID, Attribute::AttrKind Kind,
143 uint64_t Val) {
144 ID.AddInteger(Kind);
145 if (Val) ID.AddInteger(Val);
146 }
147 static void Profile(FoldingSetNodeID &ID, StringRef Kind, StringRef Values) {
148 ID.AddString(Kind);
149 if (!Values.empty()) ID.AddString(Values);
150 }
151
152 // FIXME: Remove this!
153 static uint64_t getAttrMask(Attribute::AttrKind Val);
154 };
155
156 //===----------------------------------------------------------------------===//
157 /// \class
158 /// \brief This class represents a group of attributes that apply to one
159 /// element: function, return type, or parameter.
160 class AttributeSetNode : public FoldingSetNode {
161 SmallVector<Attribute, 4> AttrList;
162
163 AttributeSetNode(ArrayRef<Attribute> Attrs)
164 : AttrList(Attrs.begin(), Attrs.end()) {}
165
166 // AttributesSetNode is uniqued, these should not be publicly available.
167 void operator=(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
168 AttributeSetNode(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
169 public:
170 static AttributeSetNode *get(LLVMContext &C, ArrayRef<Attribute> Attrs);
171
172 bool hasAttribute(Attribute::AttrKind Kind) const;
173 bool hasAttribute(StringRef Kind) const;
174 bool hasAttributes() const { return !AttrList.empty(); }
175
176 Attribute getAttribute(Attribute::AttrKind Kind) const;
177 Attribute getAttribute(StringRef Kind) const;
178
179 unsigned getAlignment() const;
180 unsigned getStackAlignment() const;
181 std::string getAsString(bool InAttrGrp) const;
182
183 typedef SmallVectorImpl<Attribute>::iterator iterator;
184 typedef SmallVectorImpl<Attribute>::const_iterator const_iterator;
185
186 iterator begin() { return AttrList.begin(); }
187 iterator end() { return AttrList.end(); }
188
189 const_iterator begin() const { return AttrList.begin(); }
190 const_iterator end() const { return AttrList.end(); }
191
192 void Profile(FoldingSetNodeID &ID) const {
193 Profile(ID, AttrList);
194 }
195 static void Profile(FoldingSetNodeID &ID, ArrayRef<Attribute> AttrList) {
196 for (unsigned I = 0, E = AttrList.size(); I != E; ++I)
197 AttrList[I].Profile(ID);
198 }
199 };
200
201 //===----------------------------------------------------------------------===//
202 /// \class
203 /// \brief This class represents a set of attributes that apply to the function,
204 /// return type, and parameters.
205 class AttributeSetImpl : public FoldingSetNode {
206 friend class AttributeSet;
207
208 LLVMContext &Context;
209
210 typedef std::pair<unsigned, AttributeSetNode*> IndexAttrPair;
211 SmallVector<IndexAttrPair, 4> AttrNodes;
212
213 // AttributesSet is uniqued, these should not be publicly available.
214 void operator=(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
215 AttributeSetImpl(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
216 public:
217 AttributeSetImpl(LLVMContext &C,
218 ArrayRef<std::pair<unsigned, AttributeSetNode*> > attrs)
219 : Context(C), AttrNodes(attrs.begin(), attrs.end()) {}
220
221 /// \brief Get the context that created this AttributeSetImpl.
222 LLVMContext &getContext() { return Context; }
223
224 /// \brief Return the number of attributes this AttributeSet contains.
225 unsigned getNumAttributes() const { return AttrNodes.size(); }
226
227 /// \brief Get the index of the given "slot" in the AttrNodes list. This index
228 /// is the index of the return, parameter, or function object that the
229 /// attributes are applied to, not the index into the AttrNodes list where the
230 /// attributes reside.
231 unsigned getSlotIndex(unsigned Slot) const {
232 return AttrNodes[Slot].first;
233 }
234
235 /// \brief Retrieve the attributes for the given "slot" in the AttrNode list.
236 /// \p Slot is an index into the AttrNodes list, not the index of the return /
237 /// parameter/ function which the attributes apply to.
238 AttributeSet getSlotAttributes(unsigned Slot) const {
239 return AttributeSet::get(Context, AttrNodes[Slot]);
240 }
241
242 /// \brief Retrieve the attribute set node for the given "slot" in the
243 /// AttrNode list.
244 AttributeSetNode *getSlotNode(unsigned Slot) const {
245 return AttrNodes[Slot].second;
246 }
247
248 typedef AttributeSetNode::iterator iterator;
249 typedef AttributeSetNode::const_iterator const_iterator;
250
251 iterator begin(unsigned Slot)
252 { return AttrNodes[Slot].second->begin(); }
253 iterator end(unsigned Slot)
254 { return AttrNodes[Slot].second->end(); }
255
256 const_iterator begin(unsigned Slot) const
257 { return AttrNodes[Slot].second->begin(); }
258 const_iterator end(unsigned Slot) const
259 { return AttrNodes[Slot].second->end(); }
260
261 void Profile(FoldingSetNodeID &ID) const {
262 Profile(ID, AttrNodes);
263 }
264 static void Profile(FoldingSetNodeID &ID,
265 ArrayRef<std::pair<unsigned, AttributeSetNode*> > Nodes) {
266 for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
267 ID.AddInteger(Nodes[i].first);
268 ID.AddPointer(Nodes[i].second);
269 }
270 }
271
272 // FIXME: This atrocity is temporary.
273 uint64_t Raw(unsigned Index) const;
274 };
275
276 } // end llvm namespace
277
278 #endif