comparison gcc/config/rs6000/rs6000-modes.def @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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1 /* Definitions of target machine for GNU compiler, for IBM RS/6000.
2 Copyright (C) 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
3 Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
11
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21 /* 128-bit floating point. ABI_V4 uses IEEE quad, AIX/Darwin
22 adjust this in rs6000_override_options. */
23 FLOAT_MODE (TF, 16, ieee_quad_format);
24
25 /* PSImode is used for the XER register. The XER register
26 is not used for anything; perhaps it should be deleted,
27 except that that would change register numbers. */
28 PARTIAL_INT_MODE (SI);
29
30 /* Add any extra modes needed to represent the condition code.
31
32 For the RS/6000, we need separate modes when unsigned (logical) comparisons
33 are being done and we need a separate mode for floating-point. We also
34 use a mode for the case when we are comparing the results of two
35 comparisons, as then only the EQ bit is valid in the register. */
36
37 CC_MODE (CCUNS);
38 CC_MODE (CCFP);
39 CC_MODE (CCEQ);
40
41 /* Vector modes. */
42 VECTOR_MODES (INT, 8); /* V8QI V4HI V2SI */
43 VECTOR_MODES (INT, 16); /* V16QI V8HI V4SI V2DI */
44 VECTOR_MODE (INT, DI, 1);
45 VECTOR_MODES (FLOAT, 8); /* V4HF V2SF */
46 VECTOR_MODES (FLOAT, 16); /* V8HF V4SF V2DF */