X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FIR%2FAttributeImpl.h;h=7bf9e8ab6baecf3138e2d66b045617a8c6a0a6a5;hp=bf87562dd64ddc4dbdc133e91862f8564caaeb05;hb=7bba9c5c0a5235f585ee4bd3efec29e0982de3f8;hpb=bdcbccc710a0528b4abce947782fd502bafb848d diff --git a/lib/IR/AttributeImpl.h b/lib/IR/AttributeImpl.h index bf87562dd64..7bf9e8ab6ba 100644 --- a/lib/IR/AttributeImpl.h +++ b/lib/IR/AttributeImpl.h @@ -30,59 +30,121 @@ class LLVMContext; /// \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; ///< Global context for uniquing objects - Constant *Kind; ///< Kind of attribute: enum or string - Constant *Values; ///< Values associated with the attribute + unsigned char KindID; ///< Holds the AttrEntryKind of the attribute // 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, Constant *Values = 0) - : Context(C), Kind(Kind), Values(Values) {} - LLVMContext &getContext() { return Context; } +protected: + enum AttrEntryKind { + EnumAttrEntry, + AlignAttrEntry, + StringAttrEntry + }; - bool hasAttribute(Attribute::AttrKind A) const; + AttributeImpl(AttrEntryKind KindID) : KindID(KindID) {} + +public: + virtual ~AttributeImpl(); - Constant *getAttributeKind() const { return Kind; } - Constant *getAttributeValues() const { return Values; } + bool isEnumAttribute() const { return KindID == EnumAttrEntry; } + bool isAlignAttribute() const { return KindID == AlignAttrEntry; } + bool isStringAttribute() const { return KindID == StringAttrEntry; } - uint64_t getAlignment() const; - uint64_t getStackAlignment() const; + bool hasAttribute(Attribute::AttrKind A) const; + bool hasAttribute(StringRef Kind) const; - /// \brief Equality and non-equality comparison operators. - bool operator==(Attribute::AttrKind Kind) const; - bool operator!=(Attribute::AttrKind Kind) const; + Attribute::AttrKind getKindAsEnum() const; + uint64_t getValueAsInt() const; - bool operator==(StringRef Kind) const; - bool operator!=(StringRef Kind) const; + StringRef getKindAsString() const; + StringRef getValueAsString() const; /// \brief Used when sorting the attributes. bool operator<(const AttributeImpl &AI) const; void Profile(FoldingSetNodeID &ID) const { - Profile(ID, Kind, Values); + if (isEnumAttribute()) + Profile(ID, getKindAsEnum(), 0); + else if (isAlignAttribute()) + Profile(ID, getKindAsEnum(), getValueAsInt()); + else + Profile(ID, getKindAsString(), getValueAsString()); + } + static void Profile(FoldingSetNodeID &ID, Attribute::AttrKind Kind, + uint64_t Val) { + ID.AddInteger(Kind); + if (Val) ID.AddInteger(Val); } - static void Profile(FoldingSetNodeID &ID, Constant *Kind, Constant *Values) { - ID.AddPointer(Kind); - if (Values) - ID.AddPointer(Values); + static void Profile(FoldingSetNodeID &ID, StringRef Kind, StringRef Values) { + ID.AddString(Kind); + if (!Values.empty()) ID.AddString(Values); } // FIXME: Remove this! static uint64_t getAttrMask(Attribute::AttrKind Val); }; +//===----------------------------------------------------------------------===// +/// \class +/// \brief A set of classes that contain the value of the +/// attribute object. There are three main categories: enum attribute entries, +/// represented by Attribute::AttrKind; alignment attribute entries; and string +/// attribute enties, which are for target-dependent attributes. + +class EnumAttributeImpl : public AttributeImpl { + Attribute::AttrKind Kind; + +protected: + EnumAttributeImpl(AttrEntryKind ID, Attribute::AttrKind Kind) + : AttributeImpl(ID), Kind(Kind) {} + +public: + EnumAttributeImpl(Attribute::AttrKind Kind) + : AttributeImpl(EnumAttrEntry), Kind(Kind) {} + + Attribute::AttrKind getEnumKind() const { return Kind; } +}; + +class AlignAttributeImpl : public EnumAttributeImpl { + unsigned Align; + +public: + AlignAttributeImpl(Attribute::AttrKind Kind, unsigned Align) + : EnumAttributeImpl(AlignAttrEntry, Kind), Align(Align) { + assert( + (Kind == Attribute::Alignment || Kind == Attribute::StackAlignment) && + "Wrong kind for alignment attribute!"); + } + + unsigned getAlignment() const { return Align; } +}; + +class StringAttributeImpl : public AttributeImpl { + std::string Kind; + std::string Val; + +public: + StringAttributeImpl(StringRef Kind, StringRef Val = StringRef()) + : AttributeImpl(StringAttrEntry), Kind(Kind), Val(Val) {} + + StringRef getStringKind() const { return Kind; } + StringRef getStringValue() const { return 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 AttrList; + unsigned NumAttrs; ///< Number of attributes in this node. - AttributeSetNode(ArrayRef Attrs) - : AttrList(Attrs.begin(), Attrs.end()) {} + AttributeSetNode(ArrayRef Attrs) : NumAttrs(Attrs.size()) { + // There's memory after the node where we can store the entries in. + std::copy(Attrs.begin(), Attrs.end(), + reinterpret_cast(this + 1)); + } // AttributesSetNode is uniqued, these should not be publicly available. void operator=(const AttributeSetNode &) LLVM_DELETED_FUNCTION; @@ -91,23 +153,22 @@ public: static AttributeSetNode *get(LLVMContext &C, ArrayRef Attrs); bool hasAttribute(Attribute::AttrKind Kind) const; - bool hasAttributes() const { return !AttrList.empty(); } + bool hasAttribute(StringRef Kind) const; + bool hasAttributes() const { return NumAttrs != 0; } + + Attribute getAttribute(Attribute::AttrKind Kind) const; + Attribute getAttribute(StringRef Kind) const; unsigned getAlignment() const; unsigned getStackAlignment() const; - std::string getAsString() const; + std::string getAsString(bool InAttrGrp) const; - typedef SmallVectorImpl::iterator iterator; - typedef SmallVectorImpl::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(); } + typedef const Attribute *iterator; + iterator begin() const { return reinterpret_cast(this + 1); } + iterator end() const { return begin() + NumAttrs; } void Profile(FoldingSetNodeID &ID) const { - Profile(ID, AttrList); + Profile(ID, makeArrayRef(begin(), end())); } static void Profile(FoldingSetNodeID &ID, ArrayRef AttrList) { for (unsigned I = 0, E = AttrList.size(); I != E; ++I) @@ -125,58 +186,67 @@ class AttributeSetImpl : public FoldingSetNode { LLVMContext &Context; typedef std::pair IndexAttrPair; - SmallVector AttrNodes; + unsigned NumAttrs; ///< Number of entries in this set. + + /// \brief Return a pointer to the IndexAttrPair for the specified slot. + const IndexAttrPair *getNode(unsigned Slot) const { + return reinterpret_cast(this + 1) + Slot; + } // 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 > attrs) - : Context(C), AttrNodes(attrs.begin(), attrs.end()) {} + ArrayRef > Attrs) + : Context(C), NumAttrs(Attrs.size()) { +#ifndef NDEBUG + if (Attrs.size() >= 2) { + for (const std::pair *i = Attrs.begin() + 1, + *e = Attrs.end(); + i != e; ++i) { + assert((i-1)->first <= i->first && "Attribute set not ordered!"); + } + } +#endif + // There's memory after the node where we can store the entries in. + std::copy(Attrs.begin(), Attrs.end(), + reinterpret_cast(this + 1)); + } /// \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(); } + unsigned getNumAttributes() const { return NumAttrs; } /// \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; + unsigned getSlotIndex(unsigned Slot) const { + return getNode(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 { - return AttributeSet::get(Context, AttrNodes[Slot]); + return AttributeSet::get(Context, *getNode(Slot)); } /// \brief Retrieve the attribute set node for the given "slot" in the /// AttrNode list. AttributeSetNode *getSlotNode(unsigned Slot) const { - return AttrNodes[Slot].second; + return getNode(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(); } + typedef AttributeSetNode::iterator iterator; + iterator begin(unsigned Slot) const { return getSlotNode(Slot)->begin(); } + iterator end(unsigned Slot) const { return getSlotNode(Slot)->end(); } void Profile(FoldingSetNodeID &ID) const { - Profile(ID, AttrNodes); + Profile(ID, makeArrayRef(getNode(0), getNumAttributes())); } static void Profile(FoldingSetNodeID &ID, ArrayRef > Nodes) { @@ -187,7 +257,7 @@ public: } // FIXME: This atrocity is temporary. - uint64_t Raw(uint64_t Index) const; + uint64_t Raw(unsigned Index) const; }; } // end llvm namespace