1/* Definitions of target machine for GCC for IA-32.
2   Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2, or (at your option)
9any later version.
10
11GCC is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING.  If not, write to
18the Free Software Foundation, 51 Franklin Street, Fifth Floor,
19Boston, MA 02110-1301, USA.  */
20
21/* The x86_64 ABI specifies both XF and TF modes.
22   XFmode is __float80 is IEEE extended; TFmode is __float128
23   is IEEE quad.  */
24
25FRACTIONAL_FLOAT_MODE (XF, 80, 12, ieee_extended_intel_96_format);
26FLOAT_MODE (TF, 16, ieee_quad_format);
27
28/* In ILP32 mode, XFmode has size 12 and alignment 4.
29   In LP64 mode, XFmode has size and alignment 16.  */
30ADJUST_FLOAT_FORMAT (XF, (TARGET_128BIT_LONG_DOUBLE
31			  ? &ieee_extended_intel_128_format
32			  : TARGET_96_ROUND_53_LONG_DOUBLE
33			  ? &ieee_extended_intel_96_round_53_format
34			  : &ieee_extended_intel_96_format));
35ADJUST_BYTESIZE  (XF, TARGET_128BIT_LONG_DOUBLE ? 16 : 12);
36ADJUST_ALIGNMENT (XF, TARGET_128BIT_LONG_DOUBLE ? 16 : 4);
37
38/* Add any extra modes needed to represent the condition code.
39
40   For the i386, we need separate modes when floating-point
41   equality comparisons are being done.
42
43   Add CCNO to indicate comparisons against zero that requires
44   Overflow flag to be unset.  Sign bit test is used instead and
45   thus can be used to form "a&b>0" type of tests.
46
47   Add CCGC to indicate comparisons against zero that allows
48   unspecified garbage in the Carry flag.  This mode is used
49   by inc/dec instructions.
50
51   Add CCGOC to indicate comparisons against zero that allows
52   unspecified garbage in the Carry and Overflow flag. This
53   mode is used to simulate comparisons of (a-b) and (a+b)
54   against zero using sub/cmp/add operations.
55
56   Add CCZ to indicate that only the Zero flag is valid.  */
57
58CC_MODE (CCGC);
59CC_MODE (CCGOC);
60CC_MODE (CCNO);
61CC_MODE (CCZ);
62CC_MODE (CCFP);
63CC_MODE (CCFPU);
64
65/* Vector modes.  */
66VECTOR_MODES (INT, 4);        /*            V4QI V2HI */
67VECTOR_MODES (INT, 8);        /*       V8QI V4HI V2SI */
68VECTOR_MODES (INT, 16);       /* V16QI V8HI V4SI V2DI */
69VECTOR_MODES (FLOAT, 8);      /*            V4HF V2SF */
70VECTOR_MODES (FLOAT, 16);     /*       V8HF V4SF V2DF */
71VECTOR_MODE (INT, DI, 4);     /*                 V4DI */
72VECTOR_MODE (INT, SI, 8);     /*                 V8SI */
73VECTOR_MODE (INT, HI, 16);    /*                V16HI */
74VECTOR_MODE (INT, QI, 32);    /*                V32QI */
75VECTOR_MODE (FLOAT, DF, 4);   /*                 V4DF */
76VECTOR_MODE (FLOAT, SF, 8);   /*                 V8SF */
77
78/* The symbol Pmode stands for one of the above machine modes (usually SImode).
79   The tm.h file specifies which one.  It is not a distinct mode.  */
80