///
//===----------------------------------------------------------------------===//
-#ifndef LLVM_ATTRIBUTESIMPL_H
-#define LLVM_ATTRIBUTESIMPL_H
+#ifndef LLVM_LIB_IR_ATTRIBUTEIMPL_H
+#define LLVM_LIB_IR_ATTRIBUTEIMPL_H
#include "llvm/ADT/FoldingSet.h"
#include "llvm/IR/Attributes.h"
+#include "llvm/Support/TrailingObjects.h"
+#include <string>
namespace llvm {
/// \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;
- Constant *Data;
- SmallVector<Constant*, 0> Vals;
+ unsigned char KindID; ///< Holds the AttrEntryKind of the attribute
+
+ // AttributesImpl is uniqued, these should not be publicly available.
+ void operator=(const AttributeImpl &) = delete;
+ AttributeImpl(const AttributeImpl &) = delete;
+
+protected:
+ enum AttrEntryKind {
+ EnumAttrEntry,
+ IntAttrEntry,
+ StringAttrEntry
+ };
+
+ AttributeImpl(AttrEntryKind KindID) : KindID(KindID) {}
+
public:
- explicit AttributeImpl(LLVMContext &C, uint64_t data);
- explicit AttributeImpl(LLVMContext &C, Attribute::AttrKind data);
- AttributeImpl(LLVMContext &C, Attribute::AttrKind data,
- ArrayRef<Constant*> values);
- AttributeImpl(LLVMContext &C, StringRef data);
+ virtual ~AttributeImpl();
- ArrayRef<Constant*> getValues() const { return Vals; }
+ bool isEnumAttribute() const { return KindID == EnumAttrEntry; }
+ bool isIntAttribute() const { return KindID == IntAttrEntry; }
+ bool isStringAttribute() const { return KindID == StringAttrEntry; }
bool hasAttribute(Attribute::AttrKind A) const;
+ bool hasAttribute(StringRef Kind) const;
+
+ Attribute::AttrKind getKindAsEnum() const;
+ uint64_t getValueAsInt() const;
- bool hasAttributes() const;
+ StringRef getKindAsString() const;
+ StringRef getValueAsString() const;
- uint64_t getAlignment() const;
- void setAlignment(unsigned Align);
+ /// \brief Used when sorting the attributes.
+ bool operator<(const AttributeImpl &AI) const;
+
+ void Profile(FoldingSetNodeID &ID) const {
+ if (isEnumAttribute())
+ Profile(ID, getKindAsEnum(), 0);
+ else if (isIntAttribute())
+ 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, StringRef Kind, StringRef Values) {
+ ID.AddString(Kind);
+ if (!Values.empty()) ID.AddString(Values);
+ }
- uint64_t getStackAlignment() const;
- void setStackAlignment(unsigned Align);
+ // FIXME: Remove this!
+ static uint64_t getAttrMask(Attribute::AttrKind Val);
+};
- bool operator==(Attribute::AttrKind Kind) const;
- bool operator!=(Attribute::AttrKind Kind) const;
+//===----------------------------------------------------------------------===//
+/// \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.
- bool operator==(StringRef Kind) const;
- bool operator!=(StringRef Kind) const;
+class EnumAttributeImpl : public AttributeImpl {
+ virtual void anchor();
+ Attribute::AttrKind Kind;
- uint64_t getBitMask() const; // FIXME: Remove.
+protected:
+ EnumAttributeImpl(AttrEntryKind ID, Attribute::AttrKind Kind)
+ : AttributeImpl(ID), Kind(Kind) {}
- static uint64_t getAttrMask(Attribute::AttrKind Val);
+public:
+ EnumAttributeImpl(Attribute::AttrKind Kind)
+ : AttributeImpl(EnumAttrEntry), Kind(Kind) {}
+
+ Attribute::AttrKind getEnumKind() const { return Kind; }
+};
+
+class IntAttributeImpl : public EnumAttributeImpl {
+ void anchor() override;
+ uint64_t Val;
+
+public:
+ IntAttributeImpl(Attribute::AttrKind Kind, uint64_t Val)
+ : EnumAttributeImpl(IntAttrEntry, Kind), Val(Val) {
+ assert((Kind == Attribute::Alignment || Kind == Attribute::StackAlignment ||
+ Kind == Attribute::Dereferenceable ||
+ Kind == Attribute::DereferenceableOrNull) &&
+ "Wrong kind for int attribute!");
+ }
+
+ uint64_t getValue() const { return Val; }
+};
+
+class StringAttributeImpl : public AttributeImpl {
+ virtual void anchor();
+ 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 final
+ : public FoldingSetNode,
+ private TrailingObjects<AttributeSetNode, Attribute> {
+ friend TrailingObjects;
+
+ unsigned NumAttrs; ///< Number of attributes in this node.
+
+ 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(), getTrailingObjects<Attribute>());
+ }
+
+ // AttributesSetNode is uniqued, these should not be publicly available.
+ void operator=(const AttributeSetNode &) = delete;
+ AttributeSetNode(const AttributeSetNode &) = delete;
+public:
+ static AttributeSetNode *get(LLVMContext &C, ArrayRef<Attribute> Attrs);
+
+ bool hasAttribute(Attribute::AttrKind Kind) const;
+ 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;
+ uint64_t getDereferenceableBytes() const;
+ uint64_t getDereferenceableOrNullBytes() const;
+ std::string getAsString(bool InAttrGrp) const;
+
+ typedef const Attribute *iterator;
+ iterator begin() const { return getTrailingObjects<Attribute>(); }
+ iterator end() const { return begin() + NumAttrs; }
void Profile(FoldingSetNodeID &ID) const {
- Profile(ID, Data, Vals);
+ Profile(ID, makeArrayRef(begin(), end()));
+ }
+ static void Profile(FoldingSetNodeID &ID, ArrayRef<Attribute> AttrList) {
+ for (unsigned I = 0, E = AttrList.size(); I != E; ++I)
+ AttrList[I].Profile(ID);
}
- static void Profile(FoldingSetNodeID &ID, Constant *Data,
- ArrayRef<Constant*> Vals);
};
+typedef std::pair<unsigned, AttributeSetNode *> IndexAttrPair;
+
//===----------------------------------------------------------------------===//
/// \class
-/// \brief This class represents a set of attributes.
-class AttributeSetImpl : public FoldingSetNode {
+/// \brief This class represents a set of attributes that apply to the function,
+/// return type, and parameters.
+class AttributeSetImpl final
+ : public FoldingSetNode,
+ private TrailingObjects<AttributeSetImpl, IndexAttrPair> {
+ friend class AttributeSet;
+ friend TrailingObjects;
+
+private:
LLVMContext &Context;
- SmallVector<AttributeWithIndex, 4> AttrList;
+ unsigned NumAttrs; ///< Number of entries in this set.
+
+ // Helper fn for TrailingObjects class.
+ size_t numTrailingObjects(OverloadToken<IndexAttrPair>) { return NumAttrs; }
+
+ /// \brief Return a pointer to the IndexAttrPair for the specified slot.
+ const IndexAttrPair *getNode(unsigned Slot) const {
+ return getTrailingObjects<IndexAttrPair>() + Slot;
+ }
// AttributesSet is uniqued, these should not be publicly available.
- void operator=(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
- AttributeSetImpl(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
+ void operator=(const AttributeSetImpl &) = delete;
+ AttributeSetImpl(const AttributeSetImpl &) = delete;
public:
- AttributeSetImpl(LLVMContext &C, ArrayRef<AttributeWithIndex> attrs)
- : Context(C), AttrList(attrs.begin(), attrs.end()) {}
+ AttributeSetImpl(LLVMContext &C,
+ 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(), getTrailingObjects<IndexAttrPair>());
+ }
+ /// \brief Get the context that created this AttributeSetImpl.
LLVMContext &getContext() { return Context; }
- ArrayRef<AttributeWithIndex> getAttributes() const { return AttrList; }
- unsigned getNumAttributes() const { return AttrList.size(); }
+
+ /// \brief Return the number of attributes this AttributeSet contains.
+ 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.
+ 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, *getNode(Slot));
+ }
+
+ /// \brief Retrieve the attribute set node for the given "slot" in the
+ /// AttrNode list.
+ AttributeSetNode *getSlotNode(unsigned Slot) const {
+ return getNode(Slot)->second;
+ }
+
+ 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, AttrList);
+ Profile(ID, makeArrayRef(getNode(0), getNumAttributes()));
}
static void Profile(FoldingSetNodeID &ID,
- ArrayRef<AttributeWithIndex> AttrList){
- for (unsigned i = 0, e = AttrList.size(); i != e; ++i) {
- ID.AddInteger(AttrList[i].Index);
- ID.AddInteger(AttrList[i].Attrs.getBitMask());
+ ArrayRef<std::pair<unsigned, AttributeSetNode*> > Nodes) {
+ for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
+ ID.AddInteger(Nodes[i].first);
+ ID.AddPointer(Nodes[i].second);
}
}
+
+ // FIXME: This atrocity is temporary.
+ uint64_t Raw(unsigned Index) const;
+
+ void dump() const;
};
} // end llvm namespace
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