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comparison gcc/optabs-query.h @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 /* IR-agnostic target query functions relating to optabs
2 Copyright (C) 2001-2017 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
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License 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_OPTABS_QUERY_H
21 #define GCC_OPTABS_QUERY_H
22
23 #include "insn-opinit.h"
24 #include "target.h"
25
26 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
27 if the target does not have such an insn. */
28
29 inline enum insn_code
30 optab_handler (optab op, machine_mode mode)
31 {
32 unsigned scode = (op << 16) | mode;
33 gcc_assert (op > LAST_CONV_OPTAB);
34 return raw_optab_handler (scode);
35 }
36
37 /* Return the insn used to perform conversion OP from mode FROM_MODE
38 to mode TO_MODE; return CODE_FOR_nothing if the target does not have
39 such an insn. */
40
41 inline enum insn_code
42 convert_optab_handler (convert_optab op, machine_mode to_mode,
43 machine_mode from_mode)
44 {
45 unsigned scode = (op << 16) | (from_mode << 8) | to_mode;
46 gcc_assert (op > unknown_optab && op <= LAST_CONV_OPTAB);
47 return raw_optab_handler (scode);
48 }
49
50 enum insn_code convert_optab_handler (convert_optab, machine_mode,
51 machine_mode, optimization_type);
52
53 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
54 if the target does not have such an insn. */
55
56 inline enum insn_code
57 direct_optab_handler (direct_optab op, machine_mode mode)
58 {
59 return optab_handler (op, mode);
60 }
61
62 enum insn_code direct_optab_handler (convert_optab, machine_mode,
63 optimization_type);
64
65 /* Return true if UNOPTAB is for a trapping-on-overflow operation. */
66
67 inline bool
68 trapv_unoptab_p (optab unoptab)
69 {
70 return (unoptab == negv_optab
71 || unoptab == absv_optab);
72 }
73
74 /* Return true if BINOPTAB is for a trapping-on-overflow operation. */
75
76 inline bool
77 trapv_binoptab_p (optab binoptab)
78 {
79 return (binoptab == addv_optab
80 || binoptab == subv_optab
81 || binoptab == smulv_optab);
82 }
83
84 /* Return insn code for a comparison operator with VMODE
85 resultin MASK_MODE, unsigned if UNS is true. */
86
87 static inline enum insn_code
88 get_vec_cmp_icode (machine_mode vmode, machine_mode mask_mode, bool uns)
89 {
90 optab tab = uns ? vec_cmpu_optab : vec_cmp_optab;
91 return convert_optab_handler (tab, vmode, mask_mode);
92 }
93
94 /* Return insn code for a comparison operator with VMODE
95 resultin MASK_MODE (only for EQ/NE). */
96
97 static inline enum insn_code
98 get_vec_cmp_eq_icode (machine_mode vmode, machine_mode mask_mode)
99 {
100 return convert_optab_handler (vec_cmpeq_optab, vmode, mask_mode);
101 }
102
103 /* Return insn code for a conditional operator with a comparison in
104 mode CMODE, unsigned if UNS is true, resulting in a value of mode VMODE. */
105
106 inline enum insn_code
107 get_vcond_icode (machine_mode vmode, machine_mode cmode, bool uns)
108 {
109 enum insn_code icode = CODE_FOR_nothing;
110 if (uns)
111 icode = convert_optab_handler (vcondu_optab, vmode, cmode);
112 else
113 icode = convert_optab_handler (vcond_optab, vmode, cmode);
114 return icode;
115 }
116
117 /* Return insn code for a conditional operator with a mask mode
118 MMODE resulting in a value of mode VMODE. */
119
120 static inline enum insn_code
121 get_vcond_mask_icode (machine_mode vmode, machine_mode mmode)
122 {
123 return convert_optab_handler (vcond_mask_optab, vmode, mmode);
124 }
125
126 /* Return insn code for a conditional operator with a comparison in
127 mode CMODE (only EQ/NE), resulting in a value of mode VMODE. */
128
129 static inline enum insn_code
130 get_vcond_eq_icode (machine_mode vmode, machine_mode cmode)
131 {
132 return convert_optab_handler (vcondeq_optab, vmode, cmode);
133 }
134
135 /* Enumerates the possible extraction_insn operations. */
136 enum extraction_pattern { EP_insv, EP_extv, EP_extzv };
137
138 /* Describes an instruction that inserts or extracts a bitfield. */
139 struct extraction_insn
140 {
141 /* The code of the instruction. */
142 enum insn_code icode;
143
144 /* The mode that the structure operand should have. This is byte_mode
145 when using the legacy insv, extv and extzv patterns to access memory.
146 If no mode is given, the structure is a BLKmode memory. */
147 opt_scalar_int_mode struct_mode;
148
149 /* The mode of the field to be inserted or extracted, and by extension
150 the mode of the insertion or extraction itself. */
151 scalar_int_mode field_mode;
152
153 /* The mode of the field's bit position. This is only important
154 when the position is variable rather than constant. */
155 scalar_int_mode pos_mode;
156 };
157
158 bool get_best_reg_extraction_insn (extraction_insn *,
159 enum extraction_pattern,
160 unsigned HOST_WIDE_INT, machine_mode);
161 bool get_best_mem_extraction_insn (extraction_insn *,
162 enum extraction_pattern,
163 HOST_WIDE_INT, HOST_WIDE_INT, machine_mode);
164
165 enum insn_code can_extend_p (machine_mode, machine_mode, int);
166 enum insn_code can_float_p (machine_mode, machine_mode, int);
167 enum insn_code can_fix_p (machine_mode, machine_mode, int, bool *);
168 bool can_conditionally_move_p (machine_mode mode);
169 bool can_vec_perm_p (machine_mode, bool, vec_perm_indices *);
170 enum insn_code widening_optab_handler (optab, machine_mode, machine_mode);
171 /* Find a widening optab even if it doesn't widen as much as we want. */
172 #define find_widening_optab_handler(A,B,C,D) \
173 find_widening_optab_handler_and_mode (A, B, C, D, NULL)
174 enum insn_code find_widening_optab_handler_and_mode (optab, machine_mode,
175 machine_mode, int,
176 machine_mode *);
177 int can_mult_highpart_p (machine_mode, bool);
178 bool can_vec_mask_load_store_p (machine_mode, machine_mode, bool);
179 bool can_compare_and_swap_p (machine_mode, bool);
180 bool can_atomic_exchange_p (machine_mode, bool);
181 bool can_atomic_load_p (machine_mode);
182 bool lshift_cheap_p (bool);
183
184 #endif