+ explicit Attributes(AttributesImpl *A);
+public:
+ Attributes() : Attrs(0) {}
+ explicit Attributes(uint64_t Val);
+ /*implicit*/ Attributes(Attribute::AttrConst Val);
+ Attributes(const Attributes &A);
+
+ class Builder {
+ friend class Attributes;
+ uint64_t Bits;
+ public:
+ Builder() : Bits(0) {}
+ Builder(const Attributes &A) : Bits(A.Raw()) {}
+
+ void clear() { Bits = 0; }
+
+ bool hasAttributes() const;
+ bool hasAttributes(const Attributes &A) const;
+ bool hasAlignmentAttr() const;
+
+ uint64_t getAlignment() const;
+
+ void addAttribute(Attributes::AttrVal Val);
+ void removeAttribute(Attributes::AttrVal Val);
+
+ void addAlignmentAttr(unsigned Align);
+ void addStackAlignmentAttr(unsigned Align);
+
+ void removeAttributes(const Attributes &A);
+ };
+
+ /// get - Return a uniquified Attributes object. This takes the uniquified
+ /// value from the Builder and wraps it in the Attributes class.
+ static Attributes get(Builder &B);
+ static Attributes get(LLVMContext &Context, Builder &B);
+
+ /// @brief Parameter attributes that do not apply to vararg call arguments.
+ bool hasIncompatibleWithVarArgsAttrs() const {
+ return hasAttribute(Attributes::StructRet);
+ }
+
+ /// @brief Return true if the attribute is present.
+ bool hasAttribute(AttrVal Val) const;
+
+ /// @brief Return true if attributes exist
+ bool hasAttributes() const {
+ return Attrs.hasAttributes();
+ }
+
+ /// @brief Return true if the attributes are a non-null intersection.
+ bool hasAttributes(const Attributes &A) const;
+
+ /// This returns the alignment field of an attribute as a byte alignment
+ /// value.
+ unsigned getAlignment() const;
+
+ /// This returns the stack alignment field of an attribute as a byte alignment
+ /// value.
+ unsigned getStackAlignment() const;
+
+ bool isEmptyOrSingleton() const;
+
+ // This is a "safe bool() operator".
+ operator const void *() const { return Attrs.Bits ? this : 0; }
+ bool operator == (const Attributes &A) const {
+ return Attrs.Bits == A.Attrs.Bits;
+ }
+ bool operator != (const Attributes &A) const {
+ return Attrs.Bits != A.Attrs.Bits;
+ }
+
+ Attributes operator | (const Attributes &A) const;
+ Attributes operator & (const Attributes &A) const;
+ Attributes operator ^ (const Attributes &A) const;
+ Attributes &operator |= (const Attributes &A);
+ Attributes &operator &= (const Attributes &A);
+ Attributes operator ~ () const;
+
+ uint64_t Raw() const;
+
+ /// constructAlignmentFromInt - This turns an int alignment (a power of 2,
+ /// normally) into the form used internally in Attributes.
+ static Attributes constructAlignmentFromInt(unsigned i) {
+ // Default alignment, allow the target to define how to align it.
+ if (i == 0)
+ return Attribute::None;
+
+ assert(isPowerOf2_32(i) && "Alignment must be a power of two.");
+ assert(i <= 0x40000000 && "Alignment too large.");
+ return Attributes((Log2_32(i)+1) << 16);
+ }
+
+ /// constructStackAlignmentFromInt - This turns an int stack alignment (which
+ /// must be a power of 2) into the form used internally in Attributes.
+ static Attributes constructStackAlignmentFromInt(unsigned i) {
+ // Default alignment, allow the target to define how to align it.
+ if (i == 0)
+ return Attribute::None;
+
+ assert(isPowerOf2_32(i) && "Alignment must be a power of two.");
+ assert(i <= 0x100 && "Alignment too large.");
+ return Attributes((Log2_32(i)+1) << 26);
+ }