AttributeImpl.h revision a5372d270864316fb0752dd366f03fc1b45c6143
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 22namespace llvm { 23 24class Constant; 25class LLVMContext; 26 27//===----------------------------------------------------------------------===// 28/// \class 29/// \brief This class represents a single, uniqued attribute. That attribute 30/// could be a single enum, a tuple, or a string. 31class AttributeImpl : public FoldingSetNode { 32 LLVMContext &Context; 33 Constant *Data; 34 SmallVector<Constant*, 0> Vals; 35public: 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); 41 42 LLVMContext &getContext() { return Context; } 43 44 ArrayRef<Constant*> getValues() const { return Vals; } 45 46 bool hasAttribute(Attribute::AttrKind A) const; 47 48 bool hasAttributes() const; 49 50 uint64_t getAlignment() const; 51 uint64_t getStackAlignment() const; 52 53 bool operator==(Attribute::AttrKind Kind) const; 54 bool operator!=(Attribute::AttrKind Kind) const; 55 56 bool operator==(StringRef Kind) const; 57 bool operator!=(StringRef Kind) const; 58 59 bool operator<(const AttributeImpl &AI) const; 60 61 uint64_t Raw() const; // FIXME: Remove. 62 63 static uint64_t getAttrMask(Attribute::AttrKind Val); 64 65 void Profile(FoldingSetNodeID &ID) const { 66 Profile(ID, Data, Vals); 67 } 68 static void Profile(FoldingSetNodeID &ID, Constant *Data, 69 ArrayRef<Constant*> Vals); 70}; 71 72//===----------------------------------------------------------------------===// 73/// \class 74/// \brief This class represents a group of attributes that apply to one 75/// element: function, return type, or parameter. 76class AttributeSetNode : public FoldingSetNode { 77 SmallVector<Attribute, 4> AttrList; 78 79 AttributeSetNode(ArrayRef<Attribute> Attrs) 80 : AttrList(Attrs.begin(), Attrs.end()) {} 81public: 82 static AttributeSetNode *get(LLVMContext &C, ArrayRef<Attribute> Attrs); 83 84 typedef SmallVectorImpl<Attribute>::iterator iterator; 85 typedef SmallVectorImpl<Attribute>::const_iterator const_iterator; 86 87 iterator begin() { return AttrList.begin(); } 88 iterator end() { return AttrList.end(); } 89 90 const_iterator begin() const { return AttrList.begin(); } 91 const_iterator end() const { return AttrList.end(); } 92 93 void Profile(FoldingSetNodeID &ID) const { 94 Profile(ID, AttrList); 95 } 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); 99 } 100}; 101 102//===----------------------------------------------------------------------===// 103/// \class 104/// \brief This class represents a set of attributes that apply to the function, 105/// return type, and parameters. 106class AttributeSetImpl : public FoldingSetNode { 107 friend class AttributeSet; 108 109 LLVMContext &Context; 110 SmallVector<AttributeWithIndex, 4> AttrList; 111 112 SmallVector<std::pair<uint64_t, AttributeSetNode*>, 4> AttrNodes; 113 114 // AttributesSet is uniqued, these should not be publicly available. 115 void operator=(const AttributeSetImpl &) LLVM_DELETED_FUNCTION; 116 AttributeSetImpl(const AttributeSetImpl &) LLVM_DELETED_FUNCTION; 117public: 118 AttributeSetImpl(LLVMContext &C, ArrayRef<AttributeWithIndex> attrs); 119 120 LLVMContext &getContext() { return Context; } 121 ArrayRef<AttributeWithIndex> getAttributes() const { return AttrList; } 122 unsigned getNumAttributes() const { 123 return AttrNodes.size(); 124 } 125 unsigned getSlotIndex(unsigned Slot) const { 126 return AttrNodes[Slot].first; 127 } 128 AttributeSet getSlotAttributes(unsigned Slot) const { 129 // FIXME: This needs to use AttrNodes instead. 130 return AttributeSet::get(Context, AttrList[Slot]); 131 } 132 133 void Profile(FoldingSetNodeID &ID) const { 134 Profile(ID, AttrList); 135 } 136 static void Profile(FoldingSetNodeID &ID, 137 ArrayRef<AttributeWithIndex> AttrList) { 138 for (unsigned i = 0, e = AttrList.size(); i != e; ++i) { 139 ID.AddInteger(AttrList[i].Index); 140 ID.AddInteger(AttrList[i].Attrs.Raw()); 141 } 142 } 143 144 static void Profile(FoldingSetNodeID &ID, 145 ArrayRef<std::pair<uint64_t, AttributeSetNode*> > Nodes) { 146 for (unsigned i = 0, e = Nodes.size(); i != e; ++i) { 147 ID.AddInteger(Nodes[i].first); 148 ID.AddPointer(Nodes[i].second); 149 } 150 } 151}; 152 153} // end llvm namespace 154 155#endif 156