///
//===----------------------------------------------------------------------===//
-#ifndef LLVM_ATTRIBUTES_H
-#define LLVM_ATTRIBUTES_H
+#ifndef LLVM_IR_ATTRIBUTES_H
+#define LLVM_IR_ATTRIBUTES_H
#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/DenseSet.h"
-#include "llvm/Support/MathExtras.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/PointerLikeTypeTraits.h"
+#include <bitset>
#include <cassert>
+#include <map>
#include <string>
namespace llvm {
class AttrBuilder;
class AttributeImpl;
+class AttributeSetImpl;
+class AttributeSetNode;
+class Constant;
+template<typename T> struct DenseMapInfo;
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:
///
enum AttrKind {
// IR-Level Attributes
None, ///< No attributes have been set
- AddressSafety, ///< Address safety checking is on.
Alignment, ///< Alignment of parameter (5 bits)
///< stored as log2 of alignment with +1 bias
///< 0 means unaligned (different from align(1))
AlwaysInline, ///< inline=always
+ Builtin, ///< Callee is recognized as a builtin, despite
+ ///< nobuiltin attribute on its declaration.
ByVal, ///< Pass structure by value
+ InAlloca, ///< Pass structure in an alloca
+ Cold, ///< Marks function as being in a cold path.
InlineHint, ///< Source said inlining was desirable
InReg, ///< Force argument to be passed in register
MinSize, ///< Function must be optimized for size first
Naked, ///< Naked function
Nest, ///< Nested function static chain
NoAlias, ///< Considered to not alias after call
+ NoBuiltin, ///< Callee isn't recognized as a builtin
NoCapture, ///< Function creates no aliases of pointer
NoDuplicate, ///< Call cannot be duplicated
NoImplicitFloat, ///< Disable implicit floating point insts
NoReturn, ///< Mark the function as not returning
NoUnwind, ///< Function doesn't unwind stack
OptimizeForSize, ///< opt_size
+ OptimizeNone, ///< Function must not be optimized.
ReadNone, ///< Function does not access memory
ReadOnly, ///< Function only reads from memory
+ Returned, ///< Return value is always equal to this argument
ReturnsTwice, ///< Function can return twice
SExt, ///< Sign extended before/after call
StackAlignment, ///< Alignment of stack for function (3 bits)
///< alignstack=(1))
StackProtect, ///< Stack protection.
StackProtectReq, ///< Stack protection required.
+ StackProtectStrong, ///< Strong Stack protection.
StructRet, ///< Hidden pointer to structure to return
+ SanitizeAddress, ///< AddressSanitizer is on.
+ SanitizeThread, ///< ThreadSanitizer is on.
+ SanitizeMemory, ///< MemorySanitizer is on.
UWTable, ///< Function must be in a unwind table
ZExt, ///< Zero extended before/after call
AttributeImpl *pImpl;
Attribute(AttributeImpl *A) : pImpl(A) {}
public:
- Attribute() : pImpl(0) {}
-
- /// \brief Return a uniquified Attribute object. This takes the uniquified
- /// value from the Builder and wraps it in the Attribute class.
- static Attribute get(LLVMContext &Context, ArrayRef<AttrKind> Vals);
- static Attribute get(LLVMContext &Context, AttrBuilder &B);
-
- /// \brief Return true if the attribute is present.
- bool hasAttribute(AttrKind Val) const;
-
- /// \brief Return true if attributes exist
- bool hasAttributes() const;
-
- /// \brief Returns the alignment field of an attribute as a byte alignment
- /// value.
- unsigned getAlignment() const;
-
- /// \brief Returns the stack alignment field of an attribute as a byte
- /// alignment value.
- unsigned getStackAlignment() const;
-
- /// \brief Equality and non-equality query methods.
- bool operator==(AttrKind K) const;
- bool operator!=(AttrKind K) const;
-
- // FIXME: Remove these 'operator' methods.
- bool operator==(const Attribute &A) const {
- return pImpl == A.pImpl;
- }
- bool operator!=(const Attribute &A) const {
- return pImpl != A.pImpl;
- }
-
- uint64_t getBitMask() const;
-
- /// \brief Which attributes cannot be applied to a type.
- static 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.
- static uint64_t encodeLLVMAttributesForBitcode(Attribute Attrs);
-
- /// \brief This returns an attribute bitset containing the LLVM attributes
- /// that have been decoded from the given integer. This function must stay in
- /// sync with 'encodeLLVMAttributesForBitcode'.
- static Attribute decodeLLVMAttributesForBitcode(LLVMContext &C,
- uint64_t EncodedAttrs);
-
- /// \brief The Attribute is converted to a string of equivalent mnemonic. This
- /// is, presumably, for writing out the mnemonics for the assembly writer.
- std::string getAsString() const;
-};
+ Attribute() : pImpl(nullptr) {}
-//===----------------------------------------------------------------------===//
-/// \class
-/// \brief Provide DenseMapInfo for Attribute::AttrKinds. This is used by
-/// AttrBuilder.
-template<> struct DenseMapInfo<Attribute::AttrKind> {
- static inline Attribute::AttrKind getEmptyKey() {
- return Attribute::AttrKind(~0U);
- }
- static inline Attribute::AttrKind getTombstoneKey() {
- return Attribute::AttrKind(~0U - 1);
- }
- static unsigned getHashValue(const Attribute::AttrKind &Val) {
- return Val * 37U;
- }
- static bool isEqual(const Attribute::AttrKind &LHS,
- const Attribute::AttrKind &RHS) {
- return LHS == RHS;
- }
-};
-
-//===----------------------------------------------------------------------===//
-/// \class
-/// \brief This class is used in conjunction with the Attribute::get method to
-/// create an Attribute object. The object itself is uniquified. The Builder's
-/// value, however, is not. So this can be used as a quick way to test for
-/// equality, presence of attributes, etc.
-class AttrBuilder {
- DenseSet<Attribute::AttrKind> Attrs;
- uint64_t Alignment;
- uint64_t StackAlignment;
-public:
- AttrBuilder() : Alignment(0), StackAlignment(0) {}
- explicit AttrBuilder(uint64_t B) : Alignment(0), StackAlignment(0) {
- addRawValue(B);
- }
- AttrBuilder(const Attribute &A) : Alignment(0), StackAlignment(0) {
- addAttributes(A);
- }
+ //===--------------------------------------------------------------------===//
+ // Attribute Construction
+ //===--------------------------------------------------------------------===//
- void clear();
+ /// \brief Return a uniquified Attribute object.
+ static Attribute get(LLVMContext &Context, AttrKind Kind, uint64_t Val = 0);
+ static Attribute get(LLVMContext &Context, StringRef Kind,
+ StringRef Val = StringRef());
- /// \brief Add an attribute to the builder.
- AttrBuilder &addAttribute(Attribute::AttrKind Val);
+ /// \brief Return a uniquified Attribute object that has the specific
+ /// alignment set.
+ static Attribute getWithAlignment(LLVMContext &Context, uint64_t Align);
+ static Attribute getWithStackAlignment(LLVMContext &Context, uint64_t Align);
- /// \brief Remove an attribute from the builder.
- AttrBuilder &removeAttribute(Attribute::AttrKind Val);
+ //===--------------------------------------------------------------------===//
+ // Attribute Accessors
+ //===--------------------------------------------------------------------===//
- /// \brief Add the attributes from A to the builder.
- AttrBuilder &addAttributes(const Attribute &A);
+ /// \brief Return true if the attribute is an Attribute::AttrKind type.
+ bool isEnumAttribute() const;
- /// \brief Remove the attributes from A from the builder.
- AttrBuilder &removeAttributes(const Attribute &A);
+ /// \brief Return true if the attribute is an alignment attribute.
+ bool isAlignAttribute() const;
- /// \brief Return true if the builder has the specified attribute.
- bool contains(Attribute::AttrKind A) const;
+ /// \brief Return true if the attribute is a string (target-dependent)
+ /// attribute.
+ bool isStringAttribute() const;
- /// \brief Return true if the builder has IR-level attributes.
- bool hasAttributes() const;
+ /// \brief Return true if the attribute is present.
+ bool hasAttribute(AttrKind Val) const;
- /// \brief Return true if the builder has any attribute that's in the
- /// specified attribute.
- bool hasAttributes(const Attribute &A) const;
+ /// \brief Return true if the target-dependent attribute is present.
+ bool hasAttribute(StringRef Val) const;
- /// \brief Return true if the builder has an alignment attribute.
- bool hasAlignmentAttr() const;
+ /// \brief Return the attribute's kind as an enum (Attribute::AttrKind). This
+ /// requires the attribute to be an enum or alignment attribute.
+ Attribute::AttrKind getKindAsEnum() const;
- /// \brief Retrieve the alignment attribute, if it exists.
- uint64_t getAlignment() const { return Alignment; }
+ /// \brief Return the attribute's value as an integer. This requires that the
+ /// attribute be an alignment attribute.
+ uint64_t getValueAsInt() const;
- /// \brief Retrieve the stack alignment attribute, if it exists.
- uint64_t getStackAlignment() const { return StackAlignment; }
+ /// \brief Return the attribute's kind as a string. This requires the
+ /// attribute to be a string attribute.
+ StringRef getKindAsString() const;
- /// \brief This turns an int alignment (which must be a power of 2) into the
- /// form used internally in Attribute.
- AttrBuilder &addAlignmentAttr(unsigned Align);
+ /// \brief Return the attribute's value as a string. This requires the
+ /// attribute to be a string attribute.
+ StringRef getValueAsString() const;
- /// \brief This turns an int stack alignment (which must be a power of 2) into
- /// the form used internally in Attribute.
- AttrBuilder &addStackAlignmentAttr(unsigned Align);
+ /// \brief Returns the alignment field of an attribute as a byte alignment
+ /// value.
+ unsigned getAlignment() const;
- /// \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);
+ /// \brief Returns the stack alignment field of an attribute as a byte
+ /// alignment value.
+ unsigned getStackAlignment() const;
- /// \brief Remove attributes that are used on functions only.
- void removeFunctionOnlyAttrs() {
- removeAttribute(Attribute::NoReturn)
- .removeAttribute(Attribute::NoUnwind)
- .removeAttribute(Attribute::ReadNone)
- .removeAttribute(Attribute::ReadOnly)
- .removeAttribute(Attribute::NoInline)
- .removeAttribute(Attribute::AlwaysInline)
- .removeAttribute(Attribute::OptimizeForSize)
- .removeAttribute(Attribute::StackProtect)
- .removeAttribute(Attribute::StackProtectReq)
- .removeAttribute(Attribute::NoRedZone)
- .removeAttribute(Attribute::NoImplicitFloat)
- .removeAttribute(Attribute::Naked)
- .removeAttribute(Attribute::InlineHint)
- .removeAttribute(Attribute::StackAlignment)
- .removeAttribute(Attribute::UWTable)
- .removeAttribute(Attribute::NonLazyBind)
- .removeAttribute(Attribute::ReturnsTwice)
- .removeAttribute(Attribute::AddressSafety)
- .removeAttribute(Attribute::MinSize)
- .removeAttribute(Attribute::NoDuplicate);
- }
+ /// \brief The Attribute is converted to a string of equivalent mnemonic. This
+ /// is, presumably, for writing out the mnemonics for the assembly writer.
+ std::string getAsString(bool InAttrGrp = false) const;
- uint64_t getBitMask() const;
+ /// \brief Equality and non-equality operators.
+ bool operator==(Attribute A) const { return pImpl == A.pImpl; }
+ bool operator!=(Attribute A) const { return pImpl != A.pImpl; }
- bool operator==(const AttrBuilder &B);
- bool operator!=(const AttrBuilder &B) {
- return !(*this == B);
- }
-};
+ /// \brief Less-than operator. Useful for sorting the attributes list.
+ bool operator<(Attribute A) const;
-//===----------------------------------------------------------------------===//
-/// \class
-/// \brief This is just a pair of values to associate a set of attributes with
-/// an index.
-struct AttributeWithIndex {
- Attribute Attrs; ///< The attributes that are set, or'd together.
- unsigned Index; ///< Index of the parameter for which the attributes apply.
- ///< Index 0 is used for return value attributes.
- ///< Index ~0U is used for function attributes.
-
- static AttributeWithIndex get(LLVMContext &C, unsigned Idx,
- ArrayRef<Attribute::AttrKind> Attrs) {
- return get(Idx, Attribute::get(C, Attrs));
- }
- static AttributeWithIndex get(unsigned Idx, Attribute Attrs) {
- AttributeWithIndex P;
- P.Index = Idx;
- P.Attrs = Attrs;
- return P;
+ void Profile(FoldingSetNodeID &ID) const {
+ ID.AddPointer(pImpl);
}
};
-//===----------------------------------------------------------------------===//
-// AttributeSet Smart Pointer
-//===----------------------------------------------------------------------===//
-
-class AttributeSetImpl;
-
//===----------------------------------------------------------------------===//
/// \class
-/// \brief This class manages the ref count for the opaque AttributeSetImpl
-/// object and provides accessors for it.
+/// \brief This class holds the attributes for a function, its return value, and
+/// its parameters. You access the attributes for each of them via an index into
+/// the AttributeSet object. The function attributes are at index
+/// `AttributeSet::FunctionIndex', the return value is at index
+/// `AttributeSet::ReturnIndex', and the attributes for the parameters start at
+/// index `1'.
class AttributeSet {
public:
- enum AttrIndex {
+ enum AttrIndex : unsigned {
ReturnIndex = 0U,
FunctionIndex = ~0U
};
private:
- /// \brief The attributes that we are managing. This can be null to represent
+ friend class AttrBuilder;
+ friend class AttributeSetImpl;
+ template <typename Ty> friend struct DenseMapInfo;
+
+ /// \brief The attributes that we are managing. This can be null to represent
/// the empty attributes list.
- AttributeSetImpl *AttrList;
+ AttributeSetImpl *pImpl;
+
+ /// \brief The attributes for the specified index are returned.
+ AttributeSetNode *getAttributes(unsigned Index) const;
+
+ /// \brief Create an AttributeSet with the specified parameters in it.
+ static AttributeSet get(LLVMContext &C,
+ ArrayRef<std::pair<unsigned, Attribute> > Attrs);
+ static AttributeSet get(LLVMContext &C,
+ ArrayRef<std::pair<unsigned,
+ AttributeSetNode*> > Attrs);
+
+ static AttributeSet getImpl(LLVMContext &C,
+ ArrayRef<std::pair<unsigned,
+ AttributeSetNode*> > Attrs);
- /// \brief The attributes for the specified index are returned. Attributes
- /// for the result are denoted with Idx = 0.
- Attribute getAttributes(unsigned Idx) const;
- explicit AttributeSet(AttributeSetImpl *LI) : AttrList(LI) {}
+ explicit AttributeSet(AttributeSetImpl *LI) : pImpl(LI) {}
public:
- AttributeSet() : AttrList(0) {}
- AttributeSet(const AttributeSet &P) : AttrList(P.AttrList) {}
- const AttributeSet &operator=(const AttributeSet &RHS);
+ AttributeSet() : pImpl(nullptr) {}
//===--------------------------------------------------------------------===//
- // Attribute List Construction and Mutation
+ // AttributeSet Construction and Mutation
//===--------------------------------------------------------------------===//
/// \brief Return an AttributeSet with the specified parameters in it.
- static AttributeSet get(LLVMContext &C, ArrayRef<AttributeWithIndex> Attrs);
+ static AttributeSet get(LLVMContext &C, ArrayRef<AttributeSet> Attrs);
+ static AttributeSet get(LLVMContext &C, unsigned Index,
+ ArrayRef<Attribute::AttrKind> Kind);
+ static AttributeSet get(LLVMContext &C, unsigned Index, AttrBuilder &B);
+
+ /// \brief Add an attribute to the attribute set at the given index. Since
+ /// attribute sets are immutable, this returns a new set.
+ AttributeSet addAttribute(LLVMContext &C, unsigned Index,
+ Attribute::AttrKind Attr) const;
+
+ /// \brief Add an attribute to the attribute set at the given index. Since
+ /// attribute sets are immutable, this returns a new set.
+ AttributeSet addAttribute(LLVMContext &C, unsigned Index,
+ StringRef Kind) const;
+ AttributeSet addAttribute(LLVMContext &C, unsigned Index,
+ StringRef Kind, StringRef Value) const;
+
+ /// \brief Add attributes to the attribute set at the given index. Since
+ /// attribute sets are immutable, this returns a new set.
+ AttributeSet addAttributes(LLVMContext &C, unsigned Index,
+ AttributeSet Attrs) const;
- /// \brief Add the specified attribute at the specified index to this
- /// attribute list. Since attribute lists are immutable, this returns the new
+ /// \brief Remove the specified attribute at the specified index from this
+ /// attribute list. Since attribute lists are immutable, this returns the new
/// list.
- AttributeSet addAttr(LLVMContext &C, unsigned Idx, Attribute Attrs) const;
+ AttributeSet removeAttribute(LLVMContext &C, unsigned Index,
+ Attribute::AttrKind Attr) const;
- /// \brief Remove the specified attribute at the specified index from this
- /// attribute list. Since attribute lists are immutable, this returns the new
+ /// \brief Remove the specified attributes at the specified index from this
+ /// attribute list. Since attribute lists are immutable, this returns the new
/// list.
- AttributeSet removeAttr(LLVMContext &C, unsigned Idx, Attribute Attrs) const;
+ AttributeSet removeAttributes(LLVMContext &C, unsigned Index,
+ AttributeSet Attrs) const;
//===--------------------------------------------------------------------===//
- // Attribute List Accessors
+ // AttributeSet Accessors
//===--------------------------------------------------------------------===//
+ /// \brief Retrieve the LLVM context.
+ LLVMContext &getContext() const;
+
/// \brief The attributes for the specified index are returned.
- Attribute getParamAttributes(unsigned Idx) const {
- return getAttributes(Idx);
- }
+ AttributeSet getParamAttributes(unsigned Index) const;
/// \brief The attributes for the ret value are returned.
- Attribute getRetAttributes() const {
- return getAttributes(ReturnIndex);
- }
+ AttributeSet getRetAttributes() const;
/// \brief The function attributes are returned.
- Attribute getFnAttributes() const {
- return getAttributes(FunctionIndex);
- }
-
- /// \brief Return the alignment for the specified function parameter.
- unsigned getParamAlignment(unsigned Idx) const {
- return getAttributes(Idx).getAlignment();
- }
+ AttributeSet getFnAttributes() const;
/// \brief Return true if the attribute exists at the given index.
bool hasAttribute(unsigned Index, Attribute::AttrKind Kind) const;
+ /// \brief Return true if the attribute exists at the given index.
+ bool hasAttribute(unsigned Index, StringRef Kind) const;
+
/// \brief Return true if attribute exists at the given index.
bool hasAttributes(unsigned Index) const;
+ /// \brief Return true if the specified attribute is set for at least one
+ /// parameter or for the return value.
+ bool hasAttrSomewhere(Attribute::AttrKind Attr) const;
+
+ /// \brief Return the attribute object that exists at the given index.
+ Attribute getAttribute(unsigned Index, Attribute::AttrKind Kind) const;
+
+ /// \brief Return the attribute object that exists at the given index.
+ Attribute getAttribute(unsigned Index, StringRef Kind) const;
+
+ /// \brief Return the alignment for the specified function parameter.
+ unsigned getParamAlignment(unsigned Index) const;
+
/// \brief Get the stack alignment.
unsigned getStackAlignment(unsigned Index) const;
/// \brief Return the attributes at the index as a string.
- std::string getAsString(unsigned Index) const;
+ std::string getAsString(unsigned Index, bool InAttrGrp = false) const;
- uint64_t getBitMask(unsigned Index) const;
+ typedef ArrayRef<Attribute>::iterator iterator;
- /// \brief Return true if the specified attribute is set for at least one
- /// parameter or for the return value.
- bool hasAttrSomewhere(Attribute::AttrKind Attr) const;
+ iterator begin(unsigned Slot) const;
+ iterator end(unsigned Slot) const;
/// operator==/!= - Provide equality predicates.
bool operator==(const AttributeSet &RHS) const {
- return AttrList == RHS.AttrList;
+ return pImpl == RHS.pImpl;
}
bool operator!=(const AttributeSet &RHS) const {
- return AttrList != RHS.AttrList;
+ return pImpl != RHS.pImpl;
}
//===--------------------------------------------------------------------===//
- // Attribute List Introspection
+ // AttributeSet Introspection
//===--------------------------------------------------------------------===//
+ // FIXME: Remove this.
+ uint64_t Raw(unsigned Index) const;
+
/// \brief Return a raw pointer that uniquely identifies this attribute list.
void *getRawPointer() const {
- return AttrList;
+ return pImpl;
}
- // Attributes are stored as a dense set of slots, where there is one slot for
- // each argument that has an attribute. This allows walking over the dense
- // set instead of walking the sparse list of attributes.
-
/// \brief Return true if there are no attributes.
bool isEmpty() const {
- return AttrList == 0;
+ return getNumSlots() == 0;
}
/// \brief Return the number of slots used in this attribute list. This is
/// function itself).
unsigned getNumSlots() const;
- /// \brief Return the AttributeWithIndex at the specified slot. This holds a
- /// index number plus a set of attributes.
- const AttributeWithIndex &getSlot(unsigned Slot) const;
+ /// \brief Return the index for the given slot.
+ unsigned getSlotIndex(unsigned Slot) const;
+
+ /// \brief Return the attributes at the given slot.
+ AttributeSet getSlotAttributes(unsigned Slot) const;
void dump() const;
};
+//===----------------------------------------------------------------------===//
+/// \class
+/// \brief Provide DenseMapInfo for AttributeSet.
+template<> struct DenseMapInfo<AttributeSet> {
+ static inline AttributeSet getEmptyKey() {
+ uintptr_t Val = static_cast<uintptr_t>(-1);
+ Val <<= PointerLikeTypeTraits<void*>::NumLowBitsAvailable;
+ return AttributeSet(reinterpret_cast<AttributeSetImpl*>(Val));
+ }
+ static inline AttributeSet getTombstoneKey() {
+ uintptr_t Val = static_cast<uintptr_t>(-2);
+ Val <<= PointerLikeTypeTraits<void*>::NumLowBitsAvailable;
+ return AttributeSet(reinterpret_cast<AttributeSetImpl*>(Val));
+ }
+ static unsigned getHashValue(AttributeSet AS) {
+ return (unsigned((uintptr_t)AS.pImpl) >> 4) ^
+ (unsigned((uintptr_t)AS.pImpl) >> 9);
+ }
+ static bool isEqual(AttributeSet LHS, AttributeSet RHS) { return LHS == RHS; }
+};
+
+//===----------------------------------------------------------------------===//
+/// \class
+/// \brief This class is used in conjunction with the Attribute::get method to
+/// create an Attribute object. The object itself is uniquified. The Builder's
+/// value, however, is not. So this can be used as a quick way to test for
+/// equality, presence of attributes, etc.
+class AttrBuilder {
+ std::bitset<Attribute::EndAttrKinds> Attrs;
+ std::map<std::string, std::string> TargetDepAttrs;
+ uint64_t Alignment;
+ uint64_t StackAlignment;
+public:
+ AttrBuilder() : Attrs(0), Alignment(0), StackAlignment(0) {}
+ explicit AttrBuilder(uint64_t Val)
+ : Attrs(0), Alignment(0), StackAlignment(0) {
+ addRawValue(Val);
+ }
+ AttrBuilder(const Attribute &A) : Attrs(0), Alignment(0), StackAlignment(0) {
+ addAttribute(A);
+ }
+ AttrBuilder(AttributeSet AS, unsigned Idx);
+
+ void clear();
+
+ /// \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 Add the target-dependent attribute to the builder.
+ AttrBuilder &addAttribute(StringRef A, StringRef V = StringRef());
+
+ /// \brief Remove an attribute from the builder.
+ AttrBuilder &removeAttribute(Attribute::AttrKind Val);
+
+ /// \brief Remove the attributes from the builder.
+ AttrBuilder &removeAttributes(AttributeSet A, uint64_t Index);
+
+ /// \brief Remove the target-dependent attribute to the builder.
+ AttrBuilder &removeAttribute(StringRef A);
+
+ /// \brief Add the attributes from the builder.
+ AttrBuilder &merge(const AttrBuilder &B);
+
+ /// \brief Return true if the builder has the specified attribute.
+ bool contains(Attribute::AttrKind A) const {
+ assert((unsigned)A < Attribute::EndAttrKinds && "Attribute out of range!");
+ return Attrs[A];
+ }
+
+ /// \brief Return true if the builder has the specified target-dependent
+ /// attribute.
+ bool contains(StringRef A) const;
+
+ /// \brief Return true if the builder has IR-level attributes.
+ bool hasAttributes() const;
+
+ /// \brief Return true if the builder has any attribute that's in the
+ /// specified attribute.
+ bool hasAttributes(AttributeSet A, uint64_t Index) const;
+
+ /// \brief Return true if the builder has an alignment attribute.
+ bool hasAlignmentAttr() const;
+
+ /// \brief Retrieve the alignment attribute, if it exists.
+ uint64_t getAlignment() const { return Alignment; }
+
+ /// \brief Retrieve the stack alignment attribute, if it exists.
+ uint64_t getStackAlignment() const { return StackAlignment; }
+
+ /// \brief This turns an int alignment (which must be a power of 2) into the
+ /// form used internally in Attribute.
+ AttrBuilder &addAlignmentAttr(unsigned Align);
+
+ /// \brief This turns an int stack alignment (which must be a power of 2) into
+ /// the form used internally in Attribute.
+ AttrBuilder &addStackAlignmentAttr(unsigned Align);
+
+ /// \brief Return true if the builder contains no target-independent
+ /// attributes.
+ bool empty() const { return Attrs.none(); }
+
+ // Iterators for target-dependent attributes.
+ typedef std::pair<std::string, std::string> td_type;
+ typedef std::map<std::string, std::string>::iterator td_iterator;
+ typedef std::map<std::string, std::string>::const_iterator td_const_iterator;
+
+ td_iterator td_begin() { return TargetDepAttrs.begin(); }
+ td_iterator td_end() { return TargetDepAttrs.end(); }
+
+ td_const_iterator td_begin() const { return TargetDepAttrs.begin(); }
+ td_const_iterator td_end() const { return TargetDepAttrs.end(); }
+
+ bool td_empty() const { return TargetDepAttrs.empty(); }
+
+ bool operator==(const AttrBuilder &B);
+ bool operator!=(const AttrBuilder &B) {
+ return !(*this == B);
+ }
+
+ // FIXME: Remove this in 4.0.
+
+ /// \brief Add the raw value to the internal representation.
+ AttrBuilder &addRawValue(uint64_t Val);
+};
+
+namespace AttributeFuncs {
+
+/// \brief Which attributes cannot be applied to a type.
+AttributeSet typeIncompatible(Type *Ty, uint64_t Index);
+
+} // end AttributeFuncs namespace
+
} // end llvm namespace
#endif