Mercurial > hg > CbC > CbC_gcc
comparison gcc/int-vector-builder.h @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | |
children | 1830386684a0 |
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1 /* A class for building vector integer constants. | |
2 Copyright (C) 2017-2018 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 GCC_INT_VECTOR_BUILDER_H | |
21 #define GCC_INT_VECTOR_BUILDER_H 1 | |
22 | |
23 #include "vector-builder.h" | |
24 | |
25 /* This class is used to build vectors of integer type T using the same | |
26 encoding as tree and rtx constants. See vector_builder for more | |
27 details. */ | |
28 template<typename T> | |
29 class int_vector_builder : public vector_builder<T, int_vector_builder<T> > | |
30 { | |
31 typedef vector_builder<T, int_vector_builder> parent; | |
32 friend class vector_builder<T, int_vector_builder>; | |
33 | |
34 public: | |
35 int_vector_builder () {} | |
36 int_vector_builder (poly_uint64, unsigned int, unsigned int); | |
37 | |
38 using parent::new_vector; | |
39 | |
40 private: | |
41 bool equal_p (T, T) const; | |
42 bool allow_steps_p () const { return true; } | |
43 bool integral_p (T) const { return true; } | |
44 T step (T, T) const; | |
45 T apply_step (T, unsigned int, T) const; | |
46 bool can_elide_p (T) const { return true; } | |
47 void note_representative (T *, T) {} | |
48 }; | |
49 | |
50 /* Create a new builder for a vector with FULL_NELTS elements. | |
51 Initially encode the value as NPATTERNS interleaved patterns with | |
52 NELTS_PER_PATTERN elements each. */ | |
53 | |
54 template<typename T> | |
55 inline | |
56 int_vector_builder<T>::int_vector_builder (poly_uint64 full_nelts, | |
57 unsigned int npatterns, | |
58 unsigned int nelts_per_pattern) | |
59 { | |
60 new_vector (full_nelts, npatterns, nelts_per_pattern); | |
61 } | |
62 | |
63 /* Return true if elements ELT1 and ELT2 are equal. */ | |
64 | |
65 template<typename T> | |
66 inline bool | |
67 int_vector_builder<T>::equal_p (T elt1, T elt2) const | |
68 { | |
69 return known_eq (elt1, elt2); | |
70 } | |
71 | |
72 /* Return the value of element ELT2 minus the value of element ELT1. */ | |
73 | |
74 template<typename T> | |
75 inline T | |
76 int_vector_builder<T>::step (T elt1, T elt2) const | |
77 { | |
78 return elt2 - elt1; | |
79 } | |
80 | |
81 /* Return a vector element with the value BASE + FACTOR * STEP. */ | |
82 | |
83 template<typename T> | |
84 inline T | |
85 int_vector_builder<T>::apply_step (T base, unsigned int factor, T step) const | |
86 { | |
87 return base + factor * step; | |
88 } | |
89 | |
90 #endif |