1994-08-02 20:15:59 +00:00
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/* This file contains the definitions and documentation for the
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machine modes used in the the GNU compiler.
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Copyright (C) 1987, 1992, 1994 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* This file defines all the MACHINE MODES used by GNU CC.
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A machine mode specifies a size and format of data
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at the machine level.
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Each RTL expression has a machine mode.
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At the syntax tree level, each ..._TYPE and each ..._DECL node
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has a machine mode which describes data of that type or the
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data of the variable declared. */
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/* The first argument is the internal name of the machine mode
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used in the C source.
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By convention these are in UPPER_CASE, except for the word "mode".
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The second argument is the name of the machine mode in the
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external ASCII format used for reading and printing RTL and trees.
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By convention these names in UPPER_CASE.
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Third argument states the kind of representation:
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MODE_INT - integer
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MODE_FLOAT - floating
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MODE_PARTIAL_INT - PSImode and PDImode
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MODE_CC - modes used for representing the condition code in a register
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MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT - complex number
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MODE_RANDOM - anything else
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Fourth argument is the relative size of the object, in bytes.
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It is zero when the size is meaningless or not determined.
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A byte's size is determined by BITS_PER_UNIT in tm.h.
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Fifth arg is the relative size of subunits of the object.
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It is same as the fourth argument except for complexes,
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since they are really made of two equal size subunits.
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Sixth arg is next wider natural mode of the same class.
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0 if there is none. */
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/* VOIDmode is used when no mode needs to be specified,
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as for example on CONST_INT RTL expressions. */
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DEF_MACHMODE (VOIDmode, "VOID", MODE_RANDOM, 0, 0, VOIDmode)
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DEF_MACHMODE (QImode, "QI", MODE_INT, 1, 1, HImode) /* int types */
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DEF_MACHMODE (HImode, "HI", MODE_INT, 2, 2, SImode)
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/* Pointers on some machines use this type to distinguish them from ints.
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Useful if a pointer is 4 bytes but has some bits that are not significant,
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so it is really not quite as wide as an integer. */
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----------------------------------
GCC-2.6.1 COMES TO FREEBSD-current
----------------------------------
Everybody needs to 'make world'.
Oakland, Nov 2nd 1994. In a surprise move this sunny afternoon, the release-
engineer for the slightly delayed FreeBSD-2.0, Poul-Henning Kamp (28),
decided to pull in the new version 2.6.1 of the GNU C-compiler.
The new version of the compiler was release today at noon, and hardly 9
hours later it was committed into the FreeBSD-current source-repository.
"It's is simply because we have had too much trouble with the version 2.6.0
of the compiler" Poul-Henning told the FreeBSD-Gazette, "we took a gamble
when we decided to use that as our compiler for the 2.0 release, but it
seems to pay of in the end now" he concludes.
The move has not been discussed on the "core" list at all, and will come as
a surprise for most Poul-Hennings peers. "I have only discussed it with
Jordan [J. K. Hubbard, the FreeBSD's resident humourist], and we agreed that
we needed to do it, so ... I did it!". After a breath he added with a grin:
"My email will probably get an all time 'disk-full' now!".
This will bring quite a flag-day to the FreeBSD developers, the patch-file
is almost 1.4 Megabyte, and they will have to run "make world" to get
entirely -current again. "Too bad, but we just had to do this." Was
the only comment from Poul-Henning to these problems.
When asked how this move would impact the 2.0 release-date, Poul-Hennings
face grew dark, he mumbled some very Danish words while he moved his fingers
in strange geometrical patterns. Immediately something ecclipsed the Sun, a
minor tremor shook the buildings, and the temperature fell significantly.
We decided not to pursure the question.
-----------
JOB-SECTION
-----------
Are you a dedicated GCC-hacker ?
We BADLY need somebody to look at the 'freebsd' OS in gcc, sanitize it and
carry the patches back to the GNU people. In particular, we need to get
out of the "i386-only" spot we are in now. I have the stuff to take a
gnu-dist into bmake-form, and will do that part.
Please apply to phk@freebsd.org
No Novice Need Apply.
1994-11-03 06:52:42 +00:00
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DEF_MACHMODE (PSImode, "PSI", MODE_PARTIAL_INT, 4, 4, PDImode)
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1994-08-02 20:15:59 +00:00
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DEF_MACHMODE (SImode, "SI", MODE_INT, 4, 4, DImode)
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DEF_MACHMODE (PDImode, "PDI", MODE_PARTIAL_INT, 8, 8, VOIDmode)
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DEF_MACHMODE (DImode, "DI", MODE_INT, 8, 8, TImode)
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DEF_MACHMODE (TImode, "TI", MODE_INT, 16, 16, OImode)
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DEF_MACHMODE (OImode, "OI", MODE_INT, 32, 32, VOIDmode)
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DEF_MACHMODE (QFmode, "QF", MODE_FLOAT, 1, 1, HFmode)
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DEF_MACHMODE (HFmode, "HF", MODE_FLOAT, 2, 2, TQFmode)
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DEF_MACHMODE (TQFmode, "TQF", MODE_FLOAT, 3, 3, SFmode) /* MIL-STD-1750A */
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DEF_MACHMODE (SFmode, "SF", MODE_FLOAT, 4, 4, DFmode)
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DEF_MACHMODE (DFmode, "DF", MODE_FLOAT, 8, 8, XFmode)
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DEF_MACHMODE (XFmode, "XF", MODE_FLOAT, 12, 12, TFmode) /* IEEE extended */
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DEF_MACHMODE (TFmode, "TF", MODE_FLOAT, 16, 16, VOIDmode)
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/* Complex modes. */
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DEF_MACHMODE (SCmode, "SC", MODE_COMPLEX_FLOAT, 8, 4, DCmode)
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DEF_MACHMODE (DCmode, "DC", MODE_COMPLEX_FLOAT, 16, 8, XCmode)
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DEF_MACHMODE (XCmode, "XC", MODE_COMPLEX_FLOAT, 24, 12, TCmode)
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DEF_MACHMODE (TCmode, "TC", MODE_COMPLEX_FLOAT, 32, 16, VOIDmode)
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DEF_MACHMODE (CQImode, "CQI", MODE_COMPLEX_INT, 2, 1, CHImode)
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DEF_MACHMODE (CHImode, "CHI", MODE_COMPLEX_INT, 4, 2, CSImode)
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DEF_MACHMODE (CSImode, "CSI", MODE_COMPLEX_INT, 8, 4, CDImode)
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DEF_MACHMODE (CDImode, "CDI", MODE_COMPLEX_INT, 16, 8, CTImode)
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DEF_MACHMODE (CTImode, "CTI", MODE_COMPLEX_INT, 32, 16, COImode)
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DEF_MACHMODE (COImode, "COI", MODE_COMPLEX_INT, 64, 32, VOIDmode)
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/* BLKmode is used for structures, arrays, etc.
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that fit no more specific mode. */
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DEF_MACHMODE (BLKmode, "BLK", MODE_RANDOM, 0, 0, VOIDmode)
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/* The modes for representing the condition codes come last. CCmode is
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always defined. Additional modes for the condition code can be specified
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in the EXTRA_CC_MODES macro. Everything but the names of the modes
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are copied from CCmode. For these modes, GET_MODE_WIDER_MODE points
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to the next defined CC mode, if any. */
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DEF_MACHMODE (CCmode, "CC", MODE_CC, 4, 4, VOIDmode)
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/* The symbol Pmode stands for one of the above machine modes (usually SImode).
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The tm file specifies which one. It is not a distinct mode. */
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/*
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Local variables:
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mode:c
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version-control: t
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End:
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*/
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