1 /* Typedefs for polynomial integers used in GCC. 2 Copyright (C) 2016-2018 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef HAVE_POLY_INT_TYPES_H 21 #define HAVE_POLY_INT_TYPES_H 22 23 typedef poly_int_pod<NUM_POLY_INT_COEFFS, unsigned short> poly_uint16_pod; 24 typedef poly_int_pod<NUM_POLY_INT_COEFFS, HOST_WIDE_INT> poly_int64_pod; 25 typedef poly_int_pod<NUM_POLY_INT_COEFFS, 26 unsigned HOST_WIDE_INT> poly_uint64_pod; 27 typedef poly_int_pod<NUM_POLY_INT_COEFFS, offset_int> poly_offset_int_pod; 28 typedef poly_int_pod<NUM_POLY_INT_COEFFS, wide_int> poly_wide_int_pod; 29 typedef poly_int_pod<NUM_POLY_INT_COEFFS, widest_int> poly_widest_int_pod; 30 31 typedef poly_int<NUM_POLY_INT_COEFFS, unsigned short> poly_uint16; 32 typedef poly_int<NUM_POLY_INT_COEFFS, HOST_WIDE_INT> poly_int64; 33 typedef poly_int<NUM_POLY_INT_COEFFS, unsigned HOST_WIDE_INT> poly_uint64; 34 typedef poly_int<NUM_POLY_INT_COEFFS, offset_int> poly_offset_int; 35 typedef poly_int<NUM_POLY_INT_COEFFS, wide_int> poly_wide_int; 36 typedef poly_int<NUM_POLY_INT_COEFFS, wide_int_ref> poly_wide_int_ref; 37 typedef poly_int<NUM_POLY_INT_COEFFS, widest_int> poly_widest_int; 38 39 /* Divide bit quantity X by BITS_PER_UNIT and round down (towards -Inf). 40 If X is a bit size, this gives the number of whole bytes spanned by X. 41 42 This is safe because non-constant mode sizes must be a whole number 43 of bytes in size. */ 44 #define bits_to_bytes_round_down(X) force_align_down_and_div (X, BITS_PER_UNIT) 45 46 /* Divide bit quantity X by BITS_PER_UNIT and round up (towards +Inf). 47 If X is a bit size, this gives the number of whole or partial bytes 48 spanned by X. 49 50 This is safe because non-constant mode sizes must be a whole number 51 of bytes in size. */ 52 #define bits_to_bytes_round_up(X) force_align_up_and_div (X, BITS_PER_UNIT) 53 54 /* Return the number of bits in bit quantity X that do not belong to 55 whole bytes. This is equivalent to: 56 57 X - bits_to_bytes_round_down (X) * BITS_PER_UNIT 58 59 This is safe because non-constant mode sizes must be a whole number 60 of bytes in size. */ 61 #define num_trailing_bits(X) force_get_misalignment (X, BITS_PER_UNIT) 62 63 /* Round bit quantity X down to the nearest byte boundary. 64 65 This is safe because non-constant mode sizes must be a whole number 66 of bytes in size. */ 67 #define round_down_to_byte_boundary(X) force_align_down (X, BITS_PER_UNIT) 68 69 /* Round bit quantity X up the nearest byte boundary. 70 71 This is safe because non-constant mode sizes must be a whole number 72 of bytes in size. */ 73 #define round_up_to_byte_boundary(X) force_align_up (X, BITS_PER_UNIT) 74 75 /* Return the size of an element in a vector of size SIZE, given that 76 the vector has NELTS elements. The return value is in the same units 77 as SIZE (either bits or bytes). 78 79 to_constant () is safe in this situation because vector elements are 80 always constant-sized scalars. */ 81 #define vector_element_size(SIZE, NELTS) \ 82 (exact_div (SIZE, NELTS).to_constant ()) 83 84 /* Wrapper for poly_int arguments to target macros, so that if a target 85 doesn't need polynomial-sized modes, its header file can continue to 86 treat the argument as a normal constant. This should go away once 87 macros are moved to target hooks. It shouldn't be used in other 88 contexts. */ 89 #if NUM_POLY_INT_COEFFS == 1 90 #define MACRO_INT(X) ((X).to_constant ()) 91 #else 92 #define MACRO_INT(X) (X) 93 #endif 94 95 #endif 96