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"
27 //===----------------------------------------------------------------------===//
29 /// \brief This class represents a single, uniqued attribute. That attribute
30 /// could be a single enum, a tuple, or a string.
31 class AttributeImpl : public FoldingSetNode {
34 SmallVector<Constant*, 0> Vals;
36 explicit AttributeImpl(LLVMContext &C, uint64_t data);
37 explicit AttributeImpl(LLVMContext &C, Attribute::AttrKind data);
38 AttributeImpl(LLVMContext &C, Attribute::AttrKind data,
39 ArrayRef<Constant*> values);
40 AttributeImpl(LLVMContext &C, StringRef data);
42 LLVMContext &getContext() { return Context; }
44 ArrayRef<Constant*> getValues() const { return Vals; }
46 bool hasAttribute(Attribute::AttrKind A) const;
48 bool hasAttributes() const;
50 uint64_t getAlignment() const;
51 uint64_t getStackAlignment() const;
53 bool operator==(Attribute::AttrKind Kind) const;
54 bool operator!=(Attribute::AttrKind Kind) const;
56 bool operator==(StringRef Kind) const;
57 bool operator!=(StringRef Kind) const;
59 bool operator<(const AttributeImpl &AI) const;
61 uint64_t Raw() const; // FIXME: Remove.
63 static uint64_t getAttrMask(Attribute::AttrKind Val);
65 void Profile(FoldingSetNodeID &ID) const {
66 Profile(ID, Data, Vals);
68 static void Profile(FoldingSetNodeID &ID, Constant *Data,
69 ArrayRef<Constant*> Vals);
72 //===----------------------------------------------------------------------===//
74 /// \brief This class represents a group of attributes that apply to one
75 /// element: function, return type, or parameter.
76 class AttributeSetNode : public FoldingSetNode {
77 SmallVector<Attribute, 4> AttrList;
79 AttributeSetNode(ArrayRef<Attribute> Attrs)
80 : AttrList(Attrs.begin(), Attrs.end()) {}
82 static AttributeSetNode *get(LLVMContext &C, ArrayRef<Attribute> Attrs);
84 typedef SmallVectorImpl<Attribute>::iterator iterator;
85 typedef SmallVectorImpl<Attribute>::const_iterator const_iterator;
87 iterator begin() { return AttrList.begin(); }
88 iterator end() { return AttrList.end(); }
90 const_iterator begin() const { return AttrList.begin(); }
91 const_iterator end() const { return AttrList.end(); }
93 void Profile(FoldingSetNodeID &ID) const {
94 Profile(ID, AttrList);
96 static void Profile(FoldingSetNodeID &ID, ArrayRef<Attribute> AttrList) {
97 for (unsigned I = 0, E = AttrList.size(); I != E; ++I)
98 AttrList[I].Profile(ID);
102 //===----------------------------------------------------------------------===//
104 /// \brief This class represents a set of attributes that apply to the function,
105 /// return type, and parameters.
106 class AttributeSetImpl : public FoldingSetNode {
107 friend class AttributeSet;
109 LLVMContext &Context;
110 SmallVector<AttributeWithIndex, 4> AttrList;
112 SmallVector<std::pair<uint64_t, AttributeSetNode*>, 4> AttrNodes;
114 // AttributesSet is uniqued, these should not be publicly available.
115 void operator=(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
116 AttributeSetImpl(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
118 AttributeSetImpl(LLVMContext &C, ArrayRef<AttributeWithIndex> attrs)
119 : Context(C), AttrList(attrs.begin(), attrs.end()) {}
120 AttributeSetImpl(LLVMContext &C,
121 ArrayRef<std::pair<uint64_t, AttributeSetNode*> > attrs)
122 : Context(C), AttrNodes(attrs.begin(), attrs.end()) {}
124 LLVMContext &getContext() { return Context; }
125 ArrayRef<AttributeWithIndex> getAttributes() const { return AttrList; }
126 unsigned getNumAttributes() const { return AttrList.size(); }
127 unsigned getSlotIndex(unsigned Slot) const {
128 // FIXME: This needs to use AttrNodes instead.
129 return AttrList[Slot].Index;
131 AttributeSet getSlotAttributes(unsigned Slot) const {
132 // FIXME: This needs to use AttrNodes instead.
133 return AttributeSet::get(Context, AttrList[Slot]);
136 void Profile(FoldingSetNodeID &ID) const {
137 Profile(ID, AttrList);
139 static void Profile(FoldingSetNodeID &ID,
140 ArrayRef<AttributeWithIndex> AttrList) {
141 for (unsigned i = 0, e = AttrList.size(); i != e; ++i) {
142 ID.AddInteger(AttrList[i].Index);
143 ID.AddInteger(AttrList[i].Attrs.Raw());
147 static void Profile(FoldingSetNodeID &ID,
148 ArrayRef<std::pair<uint64_t, AttributeSetNode*> > Nodes) {
149 for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
150 ID.AddInteger(Nodes[i].first);
151 ID.AddPointer(Nodes[i].second);
156 } // end llvm namespace