[31/77] Use scalar_int_mode for move2add
[official-gcc.git] / gcc / optabs-query.h
blobe85a7f11b95905295cc35107ad9538934e22de76
1 /* IR-agnostic target query functions relating to optabs
2 Copyright (C) 2001-2017 Free Software Foundation, Inc.
4 This file is part of GCC.
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.
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.
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/>. */
20 #ifndef GCC_OPTABS_QUERY_H
21 #define GCC_OPTABS_QUERY_H
23 #include "insn-opinit.h"
25 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
26 if the target does not have such an insn. */
28 inline enum insn_code
29 optab_handler (optab op, machine_mode mode)
31 unsigned scode = (op << 16) | mode;
32 gcc_assert (op > LAST_CONV_OPTAB);
33 return raw_optab_handler (scode);
36 /* Return the insn used to perform conversion OP from mode FROM_MODE
37 to mode TO_MODE; return CODE_FOR_nothing if the target does not have
38 such an insn. */
40 inline enum insn_code
41 convert_optab_handler (convert_optab op, machine_mode to_mode,
42 machine_mode from_mode)
44 unsigned scode = (op << 16) | (from_mode << 8) | to_mode;
45 gcc_assert (op > unknown_optab && op <= LAST_CONV_OPTAB);
46 return raw_optab_handler (scode);
49 enum insn_code convert_optab_handler (convert_optab, machine_mode,
50 machine_mode, optimization_type);
52 /* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
53 if the target does not have such an insn. */
55 inline enum insn_code
56 direct_optab_handler (direct_optab op, machine_mode mode)
58 return optab_handler (op, mode);
61 enum insn_code direct_optab_handler (convert_optab, machine_mode,
62 optimization_type);
64 /* Return true if UNOPTAB is for a trapping-on-overflow operation. */
66 inline bool
67 trapv_unoptab_p (optab unoptab)
69 return (unoptab == negv_optab
70 || unoptab == absv_optab);
73 /* Return true if BINOPTAB is for a trapping-on-overflow operation. */
75 inline bool
76 trapv_binoptab_p (optab binoptab)
78 return (binoptab == addv_optab
79 || binoptab == subv_optab
80 || binoptab == smulv_optab);
83 /* Return insn code for a comparison operator with VMODE
84 resultin MASK_MODE, unsigned if UNS is true. */
86 static inline enum insn_code
87 get_vec_cmp_icode (machine_mode vmode, machine_mode mask_mode, bool uns)
89 optab tab = uns ? vec_cmpu_optab : vec_cmp_optab;
90 return convert_optab_handler (tab, vmode, mask_mode);
93 /* Return insn code for a comparison operator with VMODE
94 resultin MASK_MODE (only for EQ/NE). */
96 static inline enum insn_code
97 get_vec_cmp_eq_icode (machine_mode vmode, machine_mode mask_mode)
99 return convert_optab_handler (vec_cmpeq_optab, vmode, mask_mode);
102 /* Return insn code for a conditional operator with a comparison in
103 mode CMODE, unsigned if UNS is true, resulting in a value of mode VMODE. */
105 inline enum insn_code
106 get_vcond_icode (machine_mode vmode, machine_mode cmode, bool uns)
108 enum insn_code icode = CODE_FOR_nothing;
109 if (uns)
110 icode = convert_optab_handler (vcondu_optab, vmode, cmode);
111 else
112 icode = convert_optab_handler (vcond_optab, vmode, cmode);
113 return icode;
116 /* Return insn code for a conditional operator with a mask mode
117 MMODE resulting in a value of mode VMODE. */
119 static inline enum insn_code
120 get_vcond_mask_icode (machine_mode vmode, machine_mode mmode)
122 return convert_optab_handler (vcond_mask_optab, vmode, mmode);
125 /* Return insn code for a conditional operator with a comparison in
126 mode CMODE (only EQ/NE), resulting in a value of mode VMODE. */
128 static inline enum insn_code
129 get_vcond_eq_icode (machine_mode vmode, machine_mode cmode)
131 return convert_optab_handler (vcondeq_optab, vmode, cmode);
134 /* Enumerates the possible extraction_insn operations. */
135 enum extraction_pattern { EP_insv, EP_extv, EP_extzv };
137 /* Describes an instruction that inserts or extracts a bitfield. */
138 struct extraction_insn
140 /* The code of the instruction. */
141 enum insn_code icode;
143 /* The mode that the structure operand should have. This is byte_mode
144 when using the legacy insv, extv and extzv patterns to access memory. */
145 machine_mode struct_mode;
147 /* The mode of the field to be inserted or extracted, and by extension
148 the mode of the insertion or extraction itself. */
149 machine_mode field_mode;
151 /* The mode of the field's bit position. This is only important
152 when the position is variable rather than constant. */
153 machine_mode pos_mode;
156 bool get_best_reg_extraction_insn (extraction_insn *,
157 enum extraction_pattern,
158 unsigned HOST_WIDE_INT, machine_mode);
159 bool get_best_mem_extraction_insn (extraction_insn *,
160 enum extraction_pattern,
161 HOST_WIDE_INT, HOST_WIDE_INT, machine_mode);
163 enum insn_code can_extend_p (machine_mode, machine_mode, int);
164 enum insn_code can_float_p (machine_mode, machine_mode, int);
165 enum insn_code can_fix_p (machine_mode, machine_mode, int, bool *);
166 bool can_conditionally_move_p (machine_mode mode);
167 bool can_vec_perm_p (machine_mode, bool, const unsigned char *);
168 enum insn_code widening_optab_handler (optab, machine_mode, machine_mode);
169 /* Find a widening optab even if it doesn't widen as much as we want. */
170 #define find_widening_optab_handler(A,B,C,D) \
171 find_widening_optab_handler_and_mode (A, B, C, D, NULL)
172 enum insn_code find_widening_optab_handler_and_mode (optab, machine_mode,
173 machine_mode, int,
174 machine_mode *);
175 int can_mult_highpart_p (machine_mode, bool);
176 bool can_vec_mask_load_store_p (machine_mode, machine_mode, bool);
177 bool can_compare_and_swap_p (machine_mode, bool);
178 bool can_atomic_exchange_p (machine_mode, bool);
179 bool can_atomic_load_p (machine_mode);
180 bool lshift_cheap_p (bool);
182 #endif