X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fmachmode.def;h=fbaea1096a632e58e5c7b2efe1456c7d32a0d227;hp=eedff972d997f4dd2458a823fc2843054bfa902e;hb=53b5063a415aac03876d6732a8e10a221fd5b75c;hpb=e4e139d36bff735587c4b209807470ae7079f472 diff --git a/gcc/machmode.def b/gcc/machmode.def index eedff972d99..fbaea1096a6 100644 --- a/gcc/machmode.def +++ b/gcc/machmode.def @@ -1,12 +1,13 @@ /* This file contains the definitions and documentation for the machine modes used in the GNU compiler. - Copyright (C) 1987, 1992, 1994, 1997, 1998, 2000 Free Software Foundation, Inc. + Copyright (C) 1987, 1992, 1994, 1997, 1998, 2000, 2003, 2004, 2005, + 2007 Free Software Foundation, Inc. This file is part of GCC. GCC 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 +Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY @@ -15,9 +16,8 @@ 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 GCC; see the file COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ +along with GCC; see the file COPYING3. If not see +. */ /* This file defines all the MACHINE MODES used by GCC. @@ -31,141 +31,214 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA 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 - PQImode, PHImode, PSImode and PDImode - MODE_CC - modes used for representing the condition code in a register - MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT - complex number - MODE_VECTOR_INT, MODE_VECTOR_FLOAT - vector - MODE_RANDOM - anything else - - Fourth argument is the relative size of the object, in bits, - so we can have modes smaller than 1 byte. - - Fifth 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. - - Sixth arg is the relative size of subunits of the object. - It is same as the fifth argument except for complexes and vectors, - since they are really made of many equal size subunits. - - Seventh arg is next wider natural mode of the same class. 0 if - there is none. Vector modes use this field to point to the next - vector size, so we can iterate through the different vectors modes. - The ordering is by increasing byte size, with QI coming before HI, - HI before SI, etc. - - Eigth arg is the mode of the internal elements in a vector. - VOIDmode if not a vector. -*/ +/* This file is included by the genmodes program. Its text is the + body of a function. Do not rely on this, it will change in the + future. + + The following statements can be used in this file -- all have + the form of a C macro call. In their arguments: + + A CLASS argument must be one of the constants defined in + mode-classes.def, less the leading MODE_ prefix; some statements + that take CLASS arguments have restrictions on which classes are + acceptable. For instance, INT. + + A MODE argument must be the printable name of a machine mode, + without quotation marks or trailing "mode". For instance, SI. + + A PRECISION, BYTESIZE, or COUNT argument must be a positive integer + constant. + + A FORMAT argument must be one of the real_mode_format structures + declared in real.h, or else a literal 0. Do not put a leading & + on the argument. + + An EXPR argument must be a syntactically valid C expression. + If an EXPR contains commas, you may need to write an extra pair of + parentheses around it, so it appears to be a single argument to the + statement. + + This file defines only those modes which are of use on almost all + machines. Other modes can be defined in the target-specific + mode definition file, config/ARCH/ARCH-modes.def. + + Order matters in this file in so far as statements which refer to + other modes must appear after the modes they refer to. However, + statements which do not refer to other modes may appear in any + order. + + RANDOM_MODE (MODE); + declares MODE to be of class RANDOM. + + CC_MODE (MODE); + declares MODE to be of class CC. + + INT_MODE (MODE, BYTESIZE); + declares MODE to be of class INT and BYTESIZE bytes wide. + All of the bits of its representation are significant. + + FRACTIONAL_INT_MODE (MODE, PRECISION, BYTESIZE); + declares MODE to be of class INT, BYTESIZE bytes wide in + storage, but with only PRECISION significant bits. + + FLOAT_MODE (MODE, BYTESIZE, FORMAT); + declares MODE to be of class FLOAT and BYTESIZE bytes wide, + using floating point format FORMAT. + All of the bits of its representation are significant. + + DECIMAL FLOAT_MODE (MODE, BYTESIZE); + declares MODE to be of class DECIMAL_FLOAT and BYTESIZE bytes + wide. All of the bits of its representation are significant. + + FRACTIONAL_FLOAT_MODE (MODE, PRECISION, BYTESIZE, FORMAT); + declares MODE to be of class FLOAT, BYTESIZE bytes wide in + storage, but with only PRECISION significant bits, using + floating point format FORMAT. + + FRACT_MODE (MODE, BYTESIZE, FBIT); + declares MODE to be of class FRACT and BYTESIZE bytes wide + with FBIT fractional bits. There may be padding bits. + + UFRACT_MODE (MODE, BYTESIZE, FBIT); + declares MODE to be of class UFRACT and BYTESIZE bytes wide + with FBIT fractional bits. There may be padding bits. + + ACCUM_MODE (MODE, BYTESIZE, IBIT, FBIT); + declares MODE to be of class ACCUM and BYTESIZE bytes wide + with IBIT integral bits and FBIT fractional bits. + There may be padding bits. + + UACCUM_MODE (MODE, BYTESIZE, FBIT); + declares MODE to be of class UACCUM and BYTESIZE bytes wide + with IBIT integral bits and FBIT fractional bits. + There may be padding bits. + + RESET_FLOAT_FORMAT (MODE, FORMAT); + changes the format of MODE, which must be class FLOAT, + to FORMAT. Use in an ARCH-modes.def to reset the format + of one of the float modes defined in this file. + + PARTIAL_INT_MODE (MODE); + declares a mode of class PARTIAL_INT with the same size as + MODE (which must be an INT mode). The name of the new mode + is made by prefixing a P to the name MODE. This statement + may grow a PRECISION argument in the future. + + VECTOR_MODE (CLASS, MODE, COUNT); + Declare a vector mode whose component mode is MODE (of class + CLASS) with COUNT components. CLASS must be INT or FLOAT. + The name of the vector mode takes the form VnX where n is + COUNT in decimal and X is MODE. + + VECTOR_MODES (CLASS, WIDTH); + For all modes presently declared in class CLASS, construct + corresponding vector modes having width WIDTH. Modes whose + byte sizes do not evenly divide WIDTH are ignored, as are + modes that would produce vector modes with only one component, + and modes smaller than one byte (if CLASS is INT) or smaller + than two bytes (if CLASS is FLOAT). CLASS must be INT or + FLOAT. The names follow the same rule as VECTOR_MODE uses. + + COMPLEX_MODES (CLASS); + For all modes presently declared in class CLASS, construct + corresponding complex modes. Modes smaller than one byte + are ignored. For FLOAT modes, the names are derived by + replacing the 'F' in the mode name with a 'C'. (It is an + error if there is no 'F'. For INT modes, the names are + derived by prefixing a C to the name. + + ADJUST_BYTESIZE (MODE, EXPR); + ADJUST_ALIGNMENT (MODE, EXPR); + ADJUST_FLOAT_FORMAT (MODE, EXPR); + ADJUST_IBIT (MODE, EXPR); + ADJUST_FBIT (MODE, EXPR); + Arrange for the byte size, alignment, floating point format, ibit, + or fbit of MODE to be adjustable at run time. EXPR will be executed + once after processing all command line options, and should + evaluate to the desired byte size, alignment, format, ibit or fbit. + + Unlike a FORMAT argument, if you are adjusting a float format + you must put an & in front of the name of each format structure. + + Note: If a mode is ever made which is more than 255 bytes wide, + machmode.h and genmodes.c will have to be changed to allocate + more space for the mode_size and mode_alignment arrays. */ /* 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, 0, VOIDmode, VOIDmode) - -DEF_MACHMODE (BImode, "BI", MODE_INT, 1, 1, 1, QImode, VOIDmode) -DEF_MACHMODE (QImode, "QI", MODE_INT, BITS_PER_UNIT, 1, 1, HImode, VOIDmode) -DEF_MACHMODE (HImode, "HI", MODE_INT, BITS_PER_UNIT*2, 2, 2, SImode, VOIDmode) -DEF_MACHMODE (SImode, "SI", MODE_INT, BITS_PER_UNIT*4, 4, 4, DImode, VOIDmode) -DEF_MACHMODE (DImode, "DI", MODE_INT, BITS_PER_UNIT*8, 8, 8, TImode, VOIDmode) -DEF_MACHMODE (TImode, "TI", MODE_INT, BITS_PER_UNIT*16, 16, 16, OImode, VOIDmode) -DEF_MACHMODE (OImode, "OI", MODE_INT, BITS_PER_UNIT*32, 32, 32, VOIDmode, VOIDmode) - -/* Pointers on some machines use these types 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 (PQImode, "PQI", MODE_PARTIAL_INT, BITS_PER_UNIT, 1, 1, PHImode, VOIDmode) -DEF_MACHMODE (PHImode, "PHI", MODE_PARTIAL_INT, BITS_PER_UNIT*2, 2, 2, PSImode, VOIDmode) -DEF_MACHMODE (PSImode, "PSI", MODE_PARTIAL_INT, BITS_PER_UNIT*4, 4, 4, PDImode, VOIDmode) -DEF_MACHMODE (PDImode, "PDI", MODE_PARTIAL_INT, BITS_PER_UNIT*8, 8, 8, VOIDmode, VOIDmode) - -DEF_MACHMODE (QFmode, "QF", MODE_FLOAT, BITS_PER_UNIT, 1, 1, HFmode, VOIDmode) -DEF_MACHMODE (HFmode, "HF", MODE_FLOAT, BITS_PER_UNIT*2, 2, 2, TQFmode, VOIDmode) -DEF_MACHMODE (TQFmode, "TQF", MODE_FLOAT, BITS_PER_UNIT*3, 3, 3, SFmode, VOIDmode) /* MIL-STD-1750A */ -DEF_MACHMODE (SFmode, "SF", MODE_FLOAT, BITS_PER_UNIT*4, 4, 4, DFmode, VOIDmode) -DEF_MACHMODE (DFmode, "DF", MODE_FLOAT, BITS_PER_UNIT*8, 8, 8, XFmode, VOIDmode) -DEF_MACHMODE (XFmode, "XF", MODE_FLOAT, BITS_PER_UNIT*12, 12, 12, TFmode, VOIDmode) /* IEEE extended */ -DEF_MACHMODE (TFmode, "TF", MODE_FLOAT, BITS_PER_UNIT*16, 16, 16, VOIDmode, VOIDmode) - -/* Complex modes. */ -DEF_MACHMODE (QCmode, "QC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*2, 2, 1, HCmode, VOIDmode) -DEF_MACHMODE (HCmode, "HC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*4, 4, 2, SCmode, VOIDmode) -DEF_MACHMODE (SCmode, "SC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*8, 8, 4, DCmode, VOIDmode) -DEF_MACHMODE (DCmode, "DC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*16, 16, 8, XCmode, VOIDmode) -DEF_MACHMODE (XCmode, "XC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*24, 24, 12, TCmode, VOIDmode) -DEF_MACHMODE (TCmode, "TC", MODE_COMPLEX_FLOAT, BITS_PER_UNIT*32, 32, 16, VOIDmode, VOIDmode) - -DEF_MACHMODE (CQImode, "CQI", MODE_COMPLEX_INT, BITS_PER_UNIT*2, 2, 1, CHImode, VOIDmode) -DEF_MACHMODE (CHImode, "CHI", MODE_COMPLEX_INT, BITS_PER_UNIT*4, 4, 2, CSImode, VOIDmode) -DEF_MACHMODE (CSImode, "CSI", MODE_COMPLEX_INT, BITS_PER_UNIT*8, 8, 4, CDImode, VOIDmode) -DEF_MACHMODE (CDImode, "CDI", MODE_COMPLEX_INT, BITS_PER_UNIT*16, 16, 8, CTImode, VOIDmode) -DEF_MACHMODE (CTImode, "CTI", MODE_COMPLEX_INT, BITS_PER_UNIT*32, 32, 16, COImode, VOIDmode) -DEF_MACHMODE (COImode, "COI", MODE_COMPLEX_INT, BITS_PER_UNIT*64, 64, 32, VOIDmode, VOIDmode) - -/* Vector modes. */ -/* There are no V1xx vector modes. These are equivalent to normal - scalar modes. */ -/* The wider mode field for vectors follows in order of increasing bit - size with QI coming before HI, HI before SI, and SI before DI - within same bit sizes. */ -DEF_MACHMODE (V2QImode, "V2QI", MODE_VECTOR_INT, BITS_PER_UNIT*2, 2, 1, V4QImode, QImode) -DEF_MACHMODE (V2HImode, "V2HI", MODE_VECTOR_INT, BITS_PER_UNIT*4, 4, 2, V8QImode, HImode) -DEF_MACHMODE (V2SImode, "V2SI", MODE_VECTOR_INT, BITS_PER_UNIT*8, 8, 4, V16QImode, SImode) -DEF_MACHMODE (V2DImode, "V2DI", MODE_VECTOR_INT, BITS_PER_UNIT*16, 16, 8, V8SImode, DImode) - -DEF_MACHMODE (V4QImode, "V4QI", MODE_VECTOR_INT, BITS_PER_UNIT*4, 4, 1, V2HImode, QImode) -DEF_MACHMODE (V4HImode, "V4HI", MODE_VECTOR_INT, BITS_PER_UNIT*8, 8, 2, V2SImode, HImode) -DEF_MACHMODE (V4SImode, "V4SI", MODE_VECTOR_INT, BITS_PER_UNIT*16, 16, 4, V2DImode, SImode) -DEF_MACHMODE (V4DImode, "V4DI", MODE_VECTOR_INT, BITS_PER_UNIT*32, 32, 8, V8DImode, DImode) - -DEF_MACHMODE (V8QImode, "V8QI", MODE_VECTOR_INT, BITS_PER_UNIT*8, 8, 1, V4HImode, QImode) -DEF_MACHMODE (V8HImode, "V8HI", MODE_VECTOR_INT, BITS_PER_UNIT*16, 16, 2, V4SImode, HImode) -DEF_MACHMODE (V8SImode, "V8SI", MODE_VECTOR_INT, BITS_PER_UNIT*32, 32, 4, V4DImode, SImode) -DEF_MACHMODE (V8DImode, "V8DI", MODE_VECTOR_INT, BITS_PER_UNIT*64, 64, 8, VOIDmode, DImode) - -DEF_MACHMODE (V16QImode, "V16QI", MODE_VECTOR_INT, BITS_PER_UNIT*16, 16, 1, V8HImode, QImode) - -DEF_MACHMODE (V2SFmode, "V2SF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*8, 8, 4, V4SFmode, SFmode) -DEF_MACHMODE (V2DFmode, "V2DF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*16, 16, 8, V8SFmode, DFmode) - -DEF_MACHMODE (V4SFmode, "V4SF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*16, 16, 4, V2DFmode, SFmode) -DEF_MACHMODE (V4DFmode, "V4DF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*32, 32, 8, V8DFmode, DFmode) - -DEF_MACHMODE (V8SFmode, "V8SF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*32, 32, 4,V4DFmode, SFmode) -DEF_MACHMODE (V8DFmode, "V8DF", MODE_VECTOR_FLOAT, BITS_PER_UNIT*64, 64, 8, VOIDmode, DFmode) -DEF_MACHMODE (V16SFmode, "V16SF", MODE_VECTOR_FLOAT, 512, 64, 4, VOIDmode, SFmode) +RANDOM_MODE (VOID); /* BLKmode is used for structures, arrays, etc. that fit no more specific mode. */ -DEF_MACHMODE (BLKmode, "BLK", MODE_RANDOM, 0, 0, 0, VOIDmode, 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. All MODE_CC modes are the - same width as SImode and have VOIDmode as their next wider mode. */ - -#define CC(E, M) DEF_MACHMODE (E, M, MODE_CC, BITS_PER_UNIT*4, 4, 4, VOIDmode, VOIDmode) - -CC (CCmode, "CC") - -#ifdef EXTRA_CC_MODES -EXTRA_CC_MODES +RANDOM_MODE (BLK); + +/* Single bit mode used for booleans. */ +FRACTIONAL_INT_MODE (BI, 1, 1); + +/* Basic integer modes. We go up to TI in generic code (128 bits). + The name OI is reserved for a 256-bit type (needed by some back ends). + FIXME TI shouldn't be generically available either. */ +INT_MODE (QI, 1); +INT_MODE (HI, 2); +INT_MODE (SI, 4); +INT_MODE (DI, 8); +INT_MODE (TI, 16); + +/* No partial integer modes are defined by default. */ + +/* Basic floating point modes. SF and DF are the only modes provided + by default. The names QF, HF, XF, and TF are reserved for targets + that need 1-word, 2-word, 80-bit, or 128-bit float types respectively. + + These are the IEEE mappings. They can be overridden with + RESET_FLOAT_FORMAT or at runtime (in OVERRIDE_OPTIONS). */ + +FLOAT_MODE (SF, 4, ieee_single_format); +FLOAT_MODE (DF, 8, ieee_double_format); + +/* Basic CC modes. + FIXME define this only for targets that need it. */ +CC_MODE (CC); + +/* Fixed-point modes. */ +FRACT_MODE (QQ, 1, 7); /* s.7 */ +FRACT_MODE (HQ, 2, 15); /* s.15 */ +FRACT_MODE (SQ, 4, 31); /* s.31 */ +FRACT_MODE (DQ, 8, 63); /* s.63 */ +FRACT_MODE (TQ, 16, 127); /* s.127 */ + +UFRACT_MODE (UQQ, 1, 8); /* .8 */ +UFRACT_MODE (UHQ, 2, 16); /* .16 */ +UFRACT_MODE (USQ, 4, 32); /* .32 */ +UFRACT_MODE (UDQ, 8, 64); /* .64 */ +UFRACT_MODE (UTQ, 16, 128); /* .128 */ + +ACCUM_MODE (HA, 2, 8, 7); /* s8.7 */ +ACCUM_MODE (SA, 4, 16, 15); /* s16.15 */ +ACCUM_MODE (DA, 8, 32, 31); /* s32.31 */ +ACCUM_MODE (TA, 16, 64, 63); /* s64.63 */ + +UACCUM_MODE (UHA, 2, 8, 8); /* 8.8 */ +UACCUM_MODE (USA, 4, 16, 16); /* 16.16 */ +UACCUM_MODE (UDA, 8, 32, 32); /* 32.32 */ +UACCUM_MODE (UTA, 16, 64, 64); /* 64.64 */ + +/* Allow the target to specify additional modes of various kinds. */ +#if HAVE_EXTRA_MODES +# include EXTRA_MODES_FILE #endif -#undef CC +/* Complex modes. */ +COMPLEX_MODES (INT); +COMPLEX_MODES (FLOAT); + +/* Decimal floating point modes. */ +DECIMAL_FLOAT_MODE (SD, 4, decimal_single_format); +DECIMAL_FLOAT_MODE (DD, 8, decimal_double_format); +DECIMAL_FLOAT_MODE (TD, 16, decimal_quad_format); /* 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. */ + The tm.h file specifies which one. It is not a distinct mode. */ /* Local variables: