class AttributeImpl;
class AttributeSetImpl;
class AttributeSetNode;
+class Constant;
class LLVMContext;
class Type;
class Attribute {
public:
/// This enumeration lists the attributes that can be associated with
- /// parameters, function results or the function itself.
+ /// parameters, function results, or the function itself.
///
- /// Note: uwtable is about the ABI or the user mandating an entry in the
- /// unwind table. The nounwind attribute is about an exception passing by the
- /// function.
+ /// Note: The `uwtable' attribute is about the ABI or the user mandating an
+ /// entry in the unwind table. The `nounwind' attribute is about an exception
+ /// passing by the function.
///
- /// In a theoretical system that uses tables for profiling and sjlj for
+ /// In a theoretical system that uses tables for profiling and SjLj for
/// exceptions, they would be fully independent. In a normal system that uses
/// tables for both, the semantics are:
///
//===--------------------------------------------------------------------===//
/// \brief Return a uniquified Attribute object.
- static Attribute get(LLVMContext &Context, AttrKind Kind);
- static Attribute get(LLVMContext &Context, AttrBuilder &B);
+ static Attribute get(LLVMContext &Context, AttrKind Kind, Constant *Val = 0);
+ static Attribute get(LLVMContext &Context, Constant *Kind, Constant *Val = 0);
/// \brief Return a uniquified Attribute object that has the specific
/// alignment set.
/// \brief Return true if the attribute is present.
bool hasAttribute(AttrKind Val) const;
- /// \brief Return true if attributes exist
- bool hasAttributes() const;
+ /// \brief Return the kind of this attribute: enum or string.
+ Constant *getAttributeKind() const;
+
+ /// \brief Return the values (if present) of the attribute. This may be a
+ /// ConstantVector to represent a list of values associated with the
+ /// attribute.
+ Constant *getAttributeValues() const;
/// \brief Returns the alignment field of an attribute as a byte alignment
/// value.
void Profile(FoldingSetNodeID &ID) const {
ID.AddPointer(pImpl);
}
-
- // FIXME: Remove this.
- uint64_t Raw() const;
};
//===----------------------------------------------------------------------===//
friend class AttrBuilder;
friend class AttributeSetImpl;
- /// \brief The attributes that we are managing. This can be null to represent
+ /// \brief The attributes that we are managing. This can be null to represent
/// the empty attributes list.
AttributeSetImpl *pImpl;
- /// \brief The attributes for the specified index are returned. Attributes
- /// for the result are denoted with Idx = 0.
+ /// \brief The attributes for the specified index are returned.
AttributeSetNode *getAttributes(unsigned Idx) const;
/// \brief Create an AttributeSet with the specified parameters in it.
AttributeSet addAttributes(LLVMContext &C, unsigned Idx,
AttributeSet Attrs) const;
- /// \brief Add return attributes to this attribute set. Since attribute sets
- /// are immutable, this returns a new set.
- AttributeSet addRetAttributes(LLVMContext &C, AttributeSet Attrs) const {
- return addAttributes(C, ReturnIndex, Attrs);
- }
-
- /// \brief Add function attributes to this attribute set. Since attribute sets
- /// are immutable, this returns a new set.
- AttributeSet addFnAttributes(LLVMContext &C, AttributeSet Attrs) const {
- return addAttributes(C, FunctionIndex, Attrs);
- }
-
/// \brief Remove the specified attribute at the specified index from this
/// attribute list. Since attribute lists are immutable, this returns the new
/// list.
/// \brief Return the attributes at the index as a string.
std::string getAsString(unsigned Index) const;
+ typedef ArrayRef<Attribute>::iterator iterator;
+
+ iterator begin(unsigned Idx) const;
+ iterator end(unsigned Idx) const;
+
/// operator==/!= - Provide equality predicates.
bool operator==(const AttributeSet &RHS) const {
return pImpl == RHS.pImpl;
/// \brief Return true if there are no attributes.
bool isEmpty() const {
- return pImpl == 0;
+ return getNumSlots() == 0;
}
/// \brief Return the number of slots used in this attribute list. This is
uint64_t StackAlignment;
public:
AttrBuilder() : Alignment(0), StackAlignment(0) {}
- explicit AttrBuilder(uint64_t B) : Alignment(0), StackAlignment(0) {
- addRawValue(B);
+ explicit AttrBuilder(uint64_t Val) : Alignment(0), StackAlignment(0) {
+ addRawValue(Val);
}
AttrBuilder(const Attribute &A) : Alignment(0), StackAlignment(0) {
- addAttributes(A);
+ addAttribute(A);
}
AttrBuilder(AttributeSet AS, unsigned Idx);
/// \brief Add an attribute to the builder.
AttrBuilder &addAttribute(Attribute::AttrKind Val);
+ /// \brief Add the Attribute object to the builder.
+ AttrBuilder &addAttribute(Attribute A);
+
/// \brief Remove an attribute from the builder.
AttrBuilder &removeAttribute(Attribute::AttrKind Val);
- /// \brief Add the attributes to the builder.
- AttrBuilder &addAttributes(Attribute A);
-
/// \brief Remove the attributes from the builder.
- AttrBuilder &removeAttributes(Attribute A);
-
- /// \brief Add the attributes to the builder.
- AttrBuilder &addAttributes(AttributeSet A);
+ AttrBuilder &removeAttributes(AttributeSet A, uint64_t Index);
/// \brief Return true if the builder has the specified attribute.
bool contains(Attribute::AttrKind A) const;
/// \brief Return true if the builder has any attribute that's in the
/// specified attribute.
- bool hasAttributes(const Attribute &A) const;
+ bool hasAttributes(AttributeSet A, uint64_t Index) const;
/// \brief Return true if the builder has an alignment attribute.
bool hasAlignmentAttr() const;
return !(*this == B);
}
- // FIXME: Remove these.
+ // FIXME: Remove this in 4.0.
/// \brief Add the raw value to the internal representation.
- ///
- /// N.B. This should be used ONLY for decoding LLVM bitcode!
AttrBuilder &addRawValue(uint64_t Val);
-
- uint64_t Raw() const;
};
namespace AttributeFuncs {
/// \brief Which attributes cannot be applied to a type.
-Attribute typeIncompatible(Type *Ty);
-
-/// \brief This returns an integer containing an encoding of all the LLVM
-/// attributes found in the given attribute bitset. Any change to this encoding
-/// is a breaking change to bitcode compatibility.
-uint64_t encodeLLVMAttributesForBitcode(AttributeSet Attrs, unsigned Index);
-
-/// \brief This fills an AttrBuilder object with the LLVM attributes that have
-/// been decoded from the given integer. This function must stay in sync with
-/// 'encodeLLVMAttributesForBitcode'.
-/// N.B. This should be used only by the bitcode reader!
-void decodeLLVMAttributesForBitcode(LLVMContext &C, AttrBuilder &B,
- uint64_t EncodedAttrs);
+AttributeSet typeIncompatible(Type *Ty, uint64_t Index);
} // end AttributeFuncs namespace
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