gcc/config/ia64/ia64-modes.def

   1 /* Definitions of target machine GNU compiler.  IA-64 version.
   2    Copyright (C) 2002, 2003, 2004, 2005, 2007 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 3, 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 COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 /* IA64 requires both XF and TF modes.
  23    XFmode is __float80 is IEEE extended; TFmode is __float128
  24    is IEEE quad.  Both these modes occupy 16 bytes, but XFmode
  25    only has 80 significant bits.  RFmode is __fpreg is IA64 internal
  26    register format with 82 significant bits but otherwise handled like
  27    XFmode.  */
  28
  29 FRACTIONAL_FLOAT_MODE (XF, 80, 16, ieee_extended_intel_128_format);
  30 FRACTIONAL_FLOAT_MODE (RF, 82, 16, ieee_extended_intel_128_format);
  31 FLOAT_MODE (TF, 16, ieee_quad_format);
  32
  33 /* The above produces:
  34
  35    mode   ILP32 size/align      LP64 size/align
  36    XF     16/16                 16/16
  37    TF     16/16                 16/16
  38
  39    psABI expectations:
  40
  41    mode   ILP32 size/align      LP64 size/align
  42    XF     12/4                  -
  43    TF     -                     -
  44
  45    HPUX expectations:
  46
  47    mode   ILP32 size/align      LP64 size/align
  48    XF     -                     -
  49    TF     16/8                  -
  50
  51    We fix this up here.  */
  52
  53 ADJUST_FLOAT_FORMAT (XF, (TARGET_ILP32 && !TARGET_HPUX)
  54                          ? &ieee_extended_intel_96_format
  55                          : &ieee_extended_intel_128_format);
  56 ADJUST_BYTESIZE  (XF, (TARGET_ILP32 && !TARGET_HPUX) ? 12 : 16);
  57 ADJUST_ALIGNMENT (XF, (TARGET_ILP32 && !TARGET_HPUX) ?  4 : 16);
  58
  59 ADJUST_FLOAT_FORMAT (RF, (TARGET_ILP32 && !TARGET_HPUX)
  60                          ? &ieee_extended_intel_96_format
  61                          : &ieee_extended_intel_128_format);
  62 ADJUST_BYTESIZE  (RF, (TARGET_ILP32 && !TARGET_HPUX) ? 12 : 16);
  63 ADJUST_ALIGNMENT (RF, (TARGET_ILP32 && !TARGET_HPUX) ?  4 : 16);
  64
  65 ADJUST_ALIGNMENT (TF, (TARGET_ILP32 &&  TARGET_HPUX) ?  8 : 16);
  66
  67 /* 256-bit integer mode is needed for STACK_SAVEAREA_MODE.  */
  68 INT_MODE (OI, 32);
  69
  70 /* Add any extra modes needed to represent the condition code.
  71
  72    CCImode is used to mark a single predicate register instead
  73    of a register pair.  This is currently only used in reg_raw_mode
  74    so that flow doesn't do something stupid.  */
  75
  76 CC_MODE (CCI);
  77
  78 /* Vector modes.  */
  79 VECTOR_MODES (INT, 4);          /* V4QI V2HI */
  80 VECTOR_MODES (INT, 8);          /* V8QI V4HI V2SI */
  81 VECTOR_MODE (INT, QI, 16);
  82 VECTOR_MODE (INT, HI, 8);
  83 VECTOR_MODE (INT, SI, 4);
  84 VECTOR_MODE (FLOAT, SF, 2);
  85 VECTOR_MODE (FLOAT, SF, 4);
  86