#include <rtl.h>

Collaboration diagram for subreg_shape:

Public Member Functions
	subreg_shape (machine_mode, poly_uint16, machine_mode)

bool	operator== (const subreg_shape &) const

bool	operator!= (const subreg_shape &) const

unsigned HOST_WIDE_INT	unique_id () const

Data Fields
machine_mode	inner_mode

poly_uint16	offset

machine_mode	outer_mode

Detailed Description

Describes the shape of a subreg:

inner_mode == the mode of the SUBREG_REG
offset     == the SUBREG_BYTE
outer_mode == the mode of the SUBREG itself.

Constructor & Destructor Documentation

◆ subreg_shape()

subreg_shape::subreg_shape	(	machine_mode	inner_mode_in,
		poly_uint16	offset_in,
		machine_mode	outer_mode_in )

inline

Member Function Documentation

◆ operator!=()

bool subreg_shape::operator!= ( const subreg_shape & other ) const

inline

References operator==().

◆ operator==()

bool subreg_shape::operator== ( const subreg_shape & other ) const

inline

References inner_mode, known_eq, offset, and outer_mode.

Referenced by operator!=().

◆ unique_id()

unsigned HOST_WIDE_INT subreg_shape::unique_id ( ) const

inline

Return an integer that uniquely identifies this shape.  Structures
like rtx_def assume that a mode can fit in an 8-bit bitfield and no
current mode is anywhere near being 65536 bytes in size, so the
id comfortably fits in an int.

References poly_int< N, C >::coeffs, ggc_alloc(), i, inner_mode, MACHINE_MODE_BITSIZE, NUM_POLY_INT_COEFFS, offset, outer_mode, and STATIC_ASSERT.

Referenced by simplifiable_subregs_hasher::hash(), and simplifiable_subregs().