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131
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1 /* Typedefs for polynomial integers used in GCC.
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145
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2 Copyright (C) 2016-2020 Free Software Foundation, Inc.
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131
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #ifndef HAVE_POLY_INT_TYPES_H
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21 #define HAVE_POLY_INT_TYPES_H
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22
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23 typedef poly_int_pod<NUM_POLY_INT_COEFFS, unsigned short> poly_uint16_pod;
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24 typedef poly_int_pod<NUM_POLY_INT_COEFFS, HOST_WIDE_INT> poly_int64_pod;
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25 typedef poly_int_pod<NUM_POLY_INT_COEFFS,
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26 unsigned HOST_WIDE_INT> poly_uint64_pod;
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27 typedef poly_int_pod<NUM_POLY_INT_COEFFS, offset_int> poly_offset_int_pod;
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28 typedef poly_int_pod<NUM_POLY_INT_COEFFS, wide_int> poly_wide_int_pod;
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29 typedef poly_int_pod<NUM_POLY_INT_COEFFS, widest_int> poly_widest_int_pod;
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30
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31 typedef poly_int<NUM_POLY_INT_COEFFS, unsigned short> poly_uint16;
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32 typedef poly_int<NUM_POLY_INT_COEFFS, HOST_WIDE_INT> poly_int64;
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33 typedef poly_int<NUM_POLY_INT_COEFFS, unsigned HOST_WIDE_INT> poly_uint64;
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34 typedef poly_int<NUM_POLY_INT_COEFFS, offset_int> poly_offset_int;
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35 typedef poly_int<NUM_POLY_INT_COEFFS, wide_int> poly_wide_int;
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36 typedef poly_int<NUM_POLY_INT_COEFFS, wide_int_ref> poly_wide_int_ref;
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37 typedef poly_int<NUM_POLY_INT_COEFFS, widest_int> poly_widest_int;
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38
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39 /* Divide bit quantity X by BITS_PER_UNIT and round down (towards -Inf).
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40 If X is a bit size, this gives the number of whole bytes spanned by X.
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41
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42 This is safe because non-constant mode sizes must be a whole number
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43 of bytes in size. */
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44 #define bits_to_bytes_round_down(X) force_align_down_and_div (X, BITS_PER_UNIT)
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45
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46 /* Divide bit quantity X by BITS_PER_UNIT and round up (towards +Inf).
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47 If X is a bit size, this gives the number of whole or partial bytes
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48 spanned by X.
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49
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50 This is safe because non-constant mode sizes must be a whole number
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51 of bytes in size. */
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52 #define bits_to_bytes_round_up(X) force_align_up_and_div (X, BITS_PER_UNIT)
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53
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54 /* Return the number of bits in bit quantity X that do not belong to
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55 whole bytes. This is equivalent to:
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56
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57 X - bits_to_bytes_round_down (X) * BITS_PER_UNIT
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58
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59 This is safe because non-constant mode sizes must be a whole number
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60 of bytes in size. */
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61 #define num_trailing_bits(X) force_get_misalignment (X, BITS_PER_UNIT)
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62
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63 /* Round bit quantity X down to the nearest byte boundary.
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64
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65 This is safe because non-constant mode sizes must be a whole number
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66 of bytes in size. */
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67 #define round_down_to_byte_boundary(X) force_align_down (X, BITS_PER_UNIT)
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68
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69 /* Round bit quantity X up the nearest byte boundary.
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70
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71 This is safe because non-constant mode sizes must be a whole number
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72 of bytes in size. */
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73 #define round_up_to_byte_boundary(X) force_align_up (X, BITS_PER_UNIT)
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74
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75 /* Return the size of an element in a vector of size SIZE, given that
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76 the vector has NELTS elements. The return value is in the same units
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77 as SIZE (either bits or bytes).
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78
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79 to_constant () is safe in this situation because vector elements are
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80 always constant-sized scalars. */
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81 #define vector_element_size(SIZE, NELTS) \
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82 (exact_div (SIZE, NELTS).to_constant ())
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83
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84 /* Wrapper for poly_int arguments to target macros, so that if a target
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85 doesn't need polynomial-sized modes, its header file can continue to
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86 treat the argument as a normal constant. This should go away once
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87 macros are moved to target hooks. It shouldn't be used in other
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88 contexts. */
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89 #if NUM_POLY_INT_COEFFS == 1
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90 #define MACRO_INT(X) ((X).to_constant ())
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91 #else
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92 #define MACRO_INT(X) (X)
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93 #endif
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94
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95 #endif
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