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