#include <Attributes.h>

Public Types
enum	AttrKind { None, Alignment, AlwaysInline, Builtin, ByVal, Cold, InlineHint, InReg, MinSize, Naked, Nest, NoAlias, NoBuiltin, NoCapture, NoDuplicate, NoImplicitFloat, NoInline, NonLazyBind, NoRedZone, NoReturn, NoUnwind, OptimizeForSize, OptimizeNone, ReadNone, ReadOnly, Returned, ReturnsTwice, SExt, StackAlignment, StackProtect, StackProtectReq, StackProtectStrong, StructRet, SanitizeAddress, SanitizeThread, SanitizeMemory, UWTable, ZExt, EndAttrKinds }

Public Member Functions
	Attribute ()

bool	isEnumAttribute () const
	Return true if the attribute is an Attribute::AttrKind type. More...

bool	isAlignAttribute () const
	Return true if the attribute is an alignment attribute. More...

bool	isStringAttribute () const
	Return true if the attribute is a string (target-dependent) attribute. More...

bool	hasAttribute (AttrKind Val) const
	Return true if the attribute is present. More...

bool	hasAttribute (StringRef Val) const
	Return true if the target-dependent attribute is present. More...

Attribute::AttrKind	getKindAsEnum () const
	Return the attribute's kind as an enum (Attribute::AttrKind). This requires the attribute to be an enum or alignment attribute. More...

uint64_t	getValueAsInt () const
	Return the attribute's value as an integer. This requires that the attribute be an alignment attribute. More...

StringRef	getKindAsString () const
	Return the attribute's kind as a string. This requires the attribute to be a string attribute. More...

StringRef	getValueAsString () const
	Return the attribute's value as a string. This requires the attribute to be a string attribute. More...

unsigned	getAlignment () const
	Returns the alignment field of an attribute as a byte alignment value. More...

unsigned	getStackAlignment () const
	Returns the stack alignment field of an attribute as a byte alignment value. More...

std::string	getAsString (bool InAttrGrp=false) const
	The Attribute is converted to a string of equivalent mnemonic. This is, presumably, for writing out the mnemonics for the assembly writer. More...

bool	operator== (Attribute A) const
	Equality and non-equality operators. More...

bool	operator!= (Attribute A) const

bool	operator< (Attribute A) const
	Less-than operator. Useful for sorting the attributes list. More...

void	Profile (FoldingSetNodeID &ID) const

Static Public Member Functions
static Attribute	get (LLVMContext &Context, AttrKind Kind, uint64_t Val=0)
	Return a uniquified Attribute object. More...

static Attribute	get (LLVMContext &Context, StringRef Kind, StringRef Val=StringRef())

static Attribute	getWithAlignment (LLVMContext &Context, uint64_t Align)
	Return a uniquified Attribute object that has the specific alignment set. More...

static Attribute	getWithStackAlignment (LLVMContext &Context, uint64_t Align)

Detailed Description

Definition at line 45 of file Attributes.h.

Member Enumeration Documentation

enum llvm::Attribute::AttrKind

This enumeration lists the attributes that can be associated with parameters, function results, or the function itself.

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 exceptions, they would be fully independent. In a normal system that uses tables for both, the semantics are:

nil = Needs an entry because an exception might pass by. nounwind = No need for an entry uwtable = Needs an entry because the ABI says so and because an exception might pass by. uwtable + nounwind = Needs an entry because the ABI says so.

Enumerator
None	No attributes have been set.
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.
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.
NoInline	inline=never
NonLazyBind	Function is called early and/or often, so lazy binding isn't worthwhile
NoRedZone	Disable redzone.
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) stored as log2 of alignment with +1 bias 0 means unaligned (different from 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.
EndAttrKinds	Sentinal value useful for loops.