gcc/config/ia64/ia64-modes.def

   1 /* Definitions of target machine GNU compiler.  IA-64 version.
   2    Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
   3    Contributed by James E. Wilson <wilson@cygnus.com> and
   4                   David Mosberger <davidm@hpl.hp.com>.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23 /* IA64 requires both XF and TF modes.
  24    XFmode is __float80 is IEEE extended; TFmode is __float128
  25    is IEEE quad.  Both these modes occupy 16 bytes, but XFmode
  26    only has 80 significant bits.  RFmode is __fpreg is IA64 internal
  27    register format with 82 significant bits but otherwise handled like
  28    XFmode.  */
  29
  30 FRACTIONAL_FLOAT_MODE (XF, 80, 16, ieee_extended_intel_128_format);
  31 FRACTIONAL_FLOAT_MODE (RF, 82, 16, ieee_extended_intel_128_format);
  32 FLOAT_MODE (TF, 16, ieee_quad_format);
  33
  34 /* The above produces:
  35
  36    mode   ILP32 size/align      LP64 size/align
  37    XF     16/16                 16/16
  38    TF     16/16                 16/16
  39
  40    psABI expectations:
  41
  42    mode   ILP32 size/align      LP64 size/align
  43    XF     12/4                  -
  44    TF     -                     -
  45
  46    HPUX expectations:
  47
  48    mode   ILP32 size/align      LP64 size/align
  49    XF     -                     -
  50    TF     16/8                  -
  51
  52    We fix this up here.  */
  53
  54 ADJUST_FLOAT_FORMAT (XF, (TARGET_ILP32 && !TARGET_HPUX)
  55                          ? &ieee_extended_intel_96_format
  56                          : &ieee_extended_intel_128_format);
  57 ADJUST_BYTESIZE  (XF, (TARGET_ILP32 && !TARGET_HPUX) ? 12 : 16);
  58 ADJUST_ALIGNMENT (XF, (TARGET_ILP32 && !TARGET_HPUX) ?  4 : 16);
  59
  60 ADJUST_FLOAT_FORMAT (RF, (TARGET_ILP32 && !TARGET_HPUX)
  61                          ? &ieee_extended_intel_96_format
  62                          : &ieee_extended_intel_128_format);
  63 ADJUST_BYTESIZE  (RF, (TARGET_ILP32 && !TARGET_HPUX) ? 12 : 16);
  64 ADJUST_ALIGNMENT (RF, (TARGET_ILP32 && !TARGET_HPUX) ?  4 : 16);
  65
  66 ADJUST_ALIGNMENT (TF, (TARGET_ILP32 &&  TARGET_HPUX) ?  8 : 16);
  67
  68 /* 256-bit integer mode is needed for STACK_SAVEAREA_MODE.  */
  69 INT_MODE (OI, 32);
  70
  71 /* Add any extra modes needed to represent the condition code.
  72
  73    CCImode is used to mark a single predicate register instead
  74    of a register pair.  This is currently only used in reg_raw_mode
  75    so that flow doesn't do something stupid.  */
  76
  77 CC_MODE (CCI);
  78
  79 /* Vector modes.  */
  80 VECTOR_MODES (INT, 4);          /* V4QI V2HI */
  81 VECTOR_MODES (INT, 8);          /* V8QI V4HI V2SI */
  82 VECTOR_MODE (INT, QI, 16);
  83 VECTOR_MODE (INT, HI, 8);
  84 VECTOR_MODE (INT, SI, 4);
  85 VECTOR_MODE (FLOAT, SF, 2);
  86 VECTOR_MODE (FLOAT, SF, 4);
  87