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