/// \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<Attribute, 4> AttrList;
+ unsigned NumAttrs; ///< Number of attributes in this node.
- AttributeSetNode(ArrayRef<Attribute> Attrs)
- : AttrList(Attrs.begin(), Attrs.end()) {}
+ AttributeSetNode(ArrayRef<Attribute> 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<Attribute *>(this + 1));
+ }
// AttributesSetNode is uniqued, these should not be publicly available.
void operator=(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
static AttributeSetNode *get(LLVMContext &C, ArrayRef<Attribute> 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<Attribute>::iterator iterator;
- typedef SmallVectorImpl<Attribute>::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<iterator>(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<Attribute> AttrList) {
for (unsigned I = 0, E = AttrList.size(); I != E; ++I)
LLVMContext &Context;
typedef std::pair<unsigned, AttributeSetNode*> IndexAttrPair;
- SmallVector<IndexAttrPair, 4> 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<const IndexAttrPair *>(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<std::pair<unsigned, AttributeSetNode*> > attrs)
- : Context(C), AttrNodes(attrs.begin(), attrs.end()) {}
+ ArrayRef<std::pair<unsigned, AttributeSetNode *> > Attrs)
+ : Context(C), NumAttrs(Attrs.size()) {
+#ifndef NDEBUG
+ if (Attrs.size() >= 2) {
+ for (const std::pair<unsigned, AttributeSetNode *> *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<IndexAttrPair *>(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<std::pair<unsigned, AttributeSetNode*> > Nodes) {
}
// FIXME: This atrocity is temporary.
- uint64_t Raw(uint64_t Index) const;
+ uint64_t Raw(unsigned Index) const;
};
} // end llvm namespace
projects / oota-llvm.git / blobdiff