From 34af06d14eedc1220bfb44a3a49eb71d1cd7655c Mon Sep 17 00:00:00 2001 From: mycroft <mycroft@138bc75d-0d04-0410-961f-82ee72b054a4> Date: Fri, 31 May 1991 20:43:32 +0000 Subject: [PATCH] Initial revision git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@26 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/machmode.def | 106 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 gcc/machmode.def diff --git a/gcc/machmode.def b/gcc/machmode.def new file mode 100644 index 000000000000..018d9ed14b87 --- /dev/null +++ b/gcc/machmode.def @@ -0,0 +1,106 @@ +/* This file contains the definitions and documentation for the + machine modes used in the the GNU compiler. + Copyright (C) 1987-1990 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +/* This file defines all the MACHINE MODES used by GNU CC. + + A machine mode specifies a size and format of data + at the machine level. + + Each RTL expression has a machine mode. + + At the syntax tree level, each ..._TYPE and each ..._DECL node + has a machine mode which describes data of that type or the + data of the variable declared. */ + +/* The first argument is the internal name of the machine mode + used in the C source. + By convention these are in UPPER_CASE, except for the word "mode". + + The second argument is the name of the machine mode in the + external ASCII format used for reading and printing RTL and trees. + By convention these names in UPPER_CASE. + + Third argument states the kind of representation: + MODE_INT - integer + MODE_FLOAT - floating + MODE_PARTIAL_INT - PSImode and PDImode + MODE_CC - modes used for representing the condition code in a register + MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT - complex number + MODE_RANDOM - anything else + + Fourth argument is the relative size of the object, in bytes. + It is zero when the size is meaningless or not determined. + A byte's size is determined by BITS_PER_UNIT in tm.h. + + + Fifth arg is the relative size of subunits of the object. + It is same as the fourth argument except for complexes, + since they are really made of two equal size subunits. + + Sixth arg is next wider natural mode of the same class. + 0 if there is none. */ + +/* VOIDmode is used when no mode needs to be specified, + as for example on CONST_INT RTL expressions. */ +DEF_MACHMODE (VOIDmode, "VOID", MODE_RANDOM, 0, 0, VOIDmode) + +DEF_MACHMODE (QImode, "QI", MODE_INT, 1, 1, HImode) /* int types */ +DEF_MACHMODE (HImode, "HI", MODE_INT, 2, 2, SImode) +/* Pointers on some machines use this type to distinguish them from ints. + Useful if a pointer is 4 bytes but has some bits that are not significant, + so it is really not quite as wide as an integer. */ +DEF_MACHMODE (PSImode, "PSI", MODE_PARTIAL_INT, 4, 4, VOIDmode) +DEF_MACHMODE (SImode, "SI", MODE_INT, 4, 4, DImode) +DEF_MACHMODE (PDImode, "PDI", MODE_PARTIAL_INT, 8, 8, VOIDmode) +DEF_MACHMODE (DImode, "DI", MODE_INT, 8, 8, TImode) +DEF_MACHMODE (TImode, "TI", MODE_INT, 16, 16, VOIDmode) + +DEF_MACHMODE (SFmode, "SF", MODE_FLOAT, 4, 4, DFmode) +DEF_MACHMODE (DFmode, "DF", MODE_FLOAT, 8, 8, XFmode) +DEF_MACHMODE (XFmode, "XF", MODE_FLOAT, 12, 12, TFmode) /* IEEE extended */ +DEF_MACHMODE (TFmode, "TF", MODE_FLOAT, 16, 16, VOIDmode) + +DEF_MACHMODE (SCmode, "SC", MODE_COMPLEX_FLOAT, 8, 4, DCmode) +DEF_MACHMODE (DCmode, "DC", MODE_COMPLEX_FLOAT, 16, 8, XCmode) +DEF_MACHMODE (XCmode, "XC", MODE_COMPLEX_FLOAT, 24, 12, TCmode) +DEF_MACHMODE (TCmode, "TC", MODE_COMPLEX_FLOAT, 32, 16, VOIDmode) + +/* BLKmode is used for structures, arrays, etc. + that fit no more specific mode. */ +DEF_MACHMODE (BLKmode, "BLK", MODE_RANDOM, 0, 0, VOIDmode) + +/* The modes for representing the condition codes come last. CCmode is + always defined. Additional modes for the condition code can be specified + in the EXTRA_CC_MODES macro. Everything but the names of the modes + are copied from CCmode. For these modes, GET_MODE_WIDER_MODE points + to the next defined CC mode, if any. */ + +DEF_MACHMODE (CCmode, "CC", MODE_CC, 4, 4, VOIDmode) + +/* The symbol Pmode stands for one of the above machine modes (usually SImode). + The tm file specifies which one. It is not a distinct mode. */ + +/* +Local variables: +mode:c +version-control: t +End: +*/ -- GitLab