|
131
|
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
|
