align.h File Reference

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Macros
#define	SWIFT_STRUCT_ALIGNMENT   32
	The default struct alignment in SWIFT.
#define	SWIFT_STRUCT_ALIGN   __attribute__((aligned(SWIFT_STRUCT_ALIGNMENT)))
	Defines alignment of structures.
#define	SWIFT_CACHE_ALIGNMENT   64
	The default cache alignment in SWIFT.
#define	SWIFT_CACHE_ALIGN   __attribute__((aligned(SWIFT_CACHE_ALIGNMENT)))
	Defines alignment of caches.
#define	swift_align_information(type, array, alignment)   ;
	Macro to tell the compiler that a given array has the specified alignment.
#define	swift_declare_aligned_ptr(type, array, ptr, alignment)
	Macro to create a restrict pointer to an array and tell the compiler that the given array has the specified alignment.
#define	swift_assume_size(var, size)   ;
	Macro to tell the compiler that a given number is 0 modulo a given size.

Macro Definition Documentation

swift_align_information

#define swift_align_information	(		type,
			array,
			alignment )   ;

Macro to tell the compiler that a given array has the specified alignment.

Note that this turns into a no-op but gives information to the compiler. For GCC versions older than 4.6 this is ignored as the builtin does not exist.

Parameters

type	The type of the array.
array	The array.
alignment	The alignment in bytes of the array.

Definition at line 61 of file align.h.

swift_assume_size

#define swift_assume_size	(		var,
			size )   ;

Macro to tell the compiler that a given number is 0 modulo a given size.

Note that this turns into a no-op but gives information to the compiler. GCC does not have the equivalent built-in so defaults to nothing.

Parameters

var	The variable
size	The modulo of interest.

Definition at line 93 of file align.h.

SWIFT_CACHE_ALIGN

#define SWIFT_CACHE_ALIGN   __attribute__((aligned(SWIFT_CACHE_ALIGNMENT)))

Defines alignment of caches.

Definition at line 40 of file align.h.

SWIFT_CACHE_ALIGNMENT

#define SWIFT_CACHE_ALIGNMENT   64

The default cache alignment in SWIFT.

Definition at line 35 of file align.h.

swift_declare_aligned_ptr

#define swift_declare_aligned_ptr	(		type,
			array,
			ptr,
			alignment )

Value:

  type *restrict array = ptr;                                  \
  swift_align_information(type, array, alignment);

Macro to create a restrict pointer to an array and tell the compiler that the given array has the specified alignment.

Note that this turns into a no-op but gives information to the compiler.

Parameters

array	The array.
ptr	Pointer to array
type	Type of array
alignment	The alignment in bytes of the array.

Definition at line 76 of file align.h.

SWIFT_STRUCT_ALIGN

struct part SWIFT_STRUCT_ALIGN   __attribute__((aligned(SWIFT_STRUCT_ALIGNMENT)))

Defines alignment of structures.

Definition at line 30 of file align.h.

SWIFT_STRUCT_ALIGNMENT

#define SWIFT_STRUCT_ALIGNMENT   32

The default struct alignment in SWIFT.

Definition at line 25 of file align.h.