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gcc/gcc/machmode.h
Zack Weinberg aa0b446591 rtl.c: Define CONST_DOUBLE_FORMAT to the appropriate format for a CONST_DOUBLE... 
1999-08-27 13:27 -0700  Zack Weinberg  <zack@bitmover.com>

	* rtl.c: Define CONST_DOUBLE_FORMAT to the appropriate format
	for a CONST_DOUBLE, at compile time.  Initialize rtx_length
	and class_narrowest_mode at compile time.  Kill init_rtl.
	Mark rtx_length, mode_class, mode_size, mode_unit_size,
	mode_wider_mode, mode_mask_array, class_narrowest_mode, and
	rtx_format as const.  Kill all references to EXTRA_CC_MODES or
	EXTRA_CC_NAMES.
	* rtl.def (CONST_DOUBLE): Use CONST_DOUBLE_FORMAT macro for
	format.
	* rtl.h: Declare rtx_length and rtx_format as const.
	* machmode.def: Define CC().  Use CC() to define CCmode.  If
	EXTRA_CC_MODES is defined, expand it here.
	* machmode.h: Declare mode_class, mode_size, mode_unit_size,
	mode_wider_mode, mode_mask_array, and class_narrowest_mode as
	const.  Kill all references to EXTRA_CC_MODES.

	* toplev.c: Don't prototype or call init_rtl.
	* optabs.c: Don't call init_mov_optab.
	* genemit.c: Don't generate init_mov_optab.  Don't call
	init_rtl.
	* gengenrtl.c: Duplicate calculation of CONST_DOUBLE_FORMAT
	here.
	* genattr.c, genattrtab.c, gencodes.c, genconfig.c,
	genextract.c, genflags.c, genopinit.c, genoutput.c, genpeep.c,
	genrecog.c: Don't call init_rtl.

	* arc.h, arm.h, c4x.h, i386.h, i960.h, m88k.h, pa.h, pdp11.h,
	rs6000.h, sparc.h: Don't define EXTRA_CC_NAMES.  Use CC() in
	definition of EXTRA_CC_MODES.

	* md.texi: Kill ref to EXTRA_CC_NAMES.
	* tm.texi: Document new way to define EXTRA_CC_MODES.

	* genrecog.c: Do not look up the name of a define_split.
	(Unrelated bugfix.)

From-SVN: r28937
1999-08-27 20:37:06 +00:00

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/* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
Copyright (C) 1991, 1993, 1994, 1996, 1998 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef HAVE_MACHINE_MODES
#define HAVE_MACHINE_MODES
/* Strictly speaking, this isn't the proper place to include these definitions,
but this file is included by every GCC file. */
/* Provide a default way to print an address in hex via printf. */
#ifndef HOST_PTR_PRINTF
# ifdef HAVE_PRINTF_PTR
# define HOST_PTR_PRINTF "%p"
# else
# define HOST_PTR_PRINTF \
(sizeof (int) == sizeof (char *) ? "%x" \
: sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
# endif
#endif /* ! HOST_PTR_PRINTF */
/* Make an enum class that gives all the machine modes. */
#define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM,
enum machine_mode {
#include "machmode.def"
MAX_MACHINE_MODE };
#undef DEF_MACHMODE
#ifndef NUM_MACHINE_MODES
#define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE
#endif
/* Get the name of mode MODE as a string. */
extern const char * const mode_name[];
#define GET_MODE_NAME(MODE) (mode_name[(int) (MODE)])
enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS};
/* Get the general kind of object that mode MODE represents
(integer, floating, complex, etc.) */
extern const enum mode_class mode_class[];
#define GET_MODE_CLASS(MODE) (mode_class[(int) (MODE)])
/* Nonzero if MODE is an integral mode. */
#define INTEGRAL_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_INT \
|| GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT)
/* Nonzero if MODE is a floating-point mode. */
#define FLOAT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)
/* Nonzero if MODE is a complex mode. */
#define COMPLEX_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)
/* Get the size in bytes of an object of mode MODE. */
extern const int mode_size[];
#define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)])
/* Get the size in bytes of the basic parts of an object of mode MODE. */
extern const int mode_unit_size[];
#define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)])
/* Get the number of units in the object. */
#define GET_MODE_NUNITS(MODE) \
((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \
: (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE))))
/* Get the size in bits of an object of mode MODE. */
#define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int) (MODE)])
#ifdef HOST_WIDE_INT
/* Get a bitmask containing 1 for all bits in a word
that fit within mode MODE. */
extern const unsigned HOST_WIDE_INT mode_mask_array[];
#define GET_MODE_MASK(MODE) mode_mask_array[(int) (MODE)]
#endif /* HOST_WIDE_INT */
/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
extern const unsigned char mode_wider_mode[];
#define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode)mode_wider_mode[(int) (MODE)])
/* Return the mode for data of a given size SIZE and mode class CLASS.
If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
The value is BLKmode if no other mode is found. */
extern enum machine_mode mode_for_size PROTO((unsigned int, enum mode_class, int));
/* Similar, but find the smallest mode for a given width. */
extern enum machine_mode smallest_mode_for_size PROTO((unsigned int,
enum mode_class));
/* Return an integer mode of the exact same size as the input mode,
or BLKmode on failure. */
extern enum machine_mode int_mode_for_mode PROTO((enum machine_mode));
/* Find the best mode to use to access a bit field. */
extern enum machine_mode get_best_mode PROTO((int, int, int, enum machine_mode, int));
/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
#define GET_MODE_ALIGNMENT(MODE) \
MIN (BIGGEST_ALIGNMENT, \
MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT)))
/* For each class, get the narrowest mode in that class. */
extern const enum machine_mode class_narrowest_mode[];
#define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (CLASS)]
/* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
and the mode whose class is Pmode and whose size is POINTER_SIZE. */
extern enum machine_mode byte_mode;
extern enum machine_mode word_mode;
extern enum machine_mode ptr_mode;
#endif /* not HAVE_MACHINE_MODES */
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