summaryrefslogtreecommitdiff
path: root/gcc/optabs-query.h
blob: 81bdb3b814f4ed381957dddfb45e8bfd6d538dda (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/* IR-agnostic target query functions relating to optabs
   Copyright (C) 2001-2016 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

#ifndef GCC_OPTABS_QUERY_H
#define GCC_OPTABS_QUERY_H

#include "insn-opinit.h"

/* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
   if the target does not have such an insn.  */

inline enum insn_code
optab_handler (optab op, machine_mode mode)
{
  unsigned scode = (op << 16) | mode;
  gcc_assert (op > LAST_CONV_OPTAB);
  return raw_optab_handler (scode);
}

/* Return the insn used to perform conversion OP from mode FROM_MODE
   to mode TO_MODE; return CODE_FOR_nothing if the target does not have
   such an insn.  */

inline enum insn_code
convert_optab_handler (convert_optab op, machine_mode to_mode,
		       machine_mode from_mode)
{
  unsigned scode = (op << 16) | (from_mode << 8) | to_mode;
  gcc_assert (op > unknown_optab && op <= LAST_CONV_OPTAB);
  return raw_optab_handler (scode);
}

enum insn_code convert_optab_handler (convert_optab, machine_mode,
				      machine_mode, optimization_type);

/* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
   if the target does not have such an insn.  */

inline enum insn_code
direct_optab_handler (direct_optab op, machine_mode mode)
{
  return optab_handler (op, mode);
}

enum insn_code direct_optab_handler (convert_optab, machine_mode,
				     optimization_type);

/* Return true if UNOPTAB is for a trapping-on-overflow operation.  */

inline bool
trapv_unoptab_p (optab unoptab)
{
  return (unoptab == negv_optab
	  || unoptab == absv_optab);
}

/* Return true if BINOPTAB is for a trapping-on-overflow operation.  */

inline bool
trapv_binoptab_p (optab binoptab)
{
  return (binoptab == addv_optab
	  || binoptab == subv_optab
	  || binoptab == smulv_optab);
}

/* Return insn code for a comparison operator with VMODE
   resultin MASK_MODE, unsigned if UNS is true.  */

static inline enum insn_code
get_vec_cmp_icode (machine_mode vmode, machine_mode mask_mode, bool uns)
{
  optab tab = uns ? vec_cmpu_optab : vec_cmp_optab;
  return convert_optab_handler (tab, vmode, mask_mode);
}

/* Return insn code for a conditional operator with a comparison in
   mode CMODE, unsigned if UNS is true, resulting in a value of mode VMODE.  */

inline enum insn_code
get_vcond_icode (machine_mode vmode, machine_mode cmode, bool uns)
{
  enum insn_code icode = CODE_FOR_nothing;
  if (uns)
    icode = convert_optab_handler (vcondu_optab, vmode, cmode);
  else
    icode = convert_optab_handler (vcond_optab, vmode, cmode);
  return icode;
}

/* Return insn code for a conditional operator with a mask mode
   MMODE resulting in a value of mode VMODE.  */

static inline enum insn_code
get_vcond_mask_icode (machine_mode vmode, machine_mode mmode)
{
  return convert_optab_handler (vcond_mask_optab, vmode, mmode);
}

/* Enumerates the possible extraction_insn operations.  */
enum extraction_pattern { EP_insv, EP_extv, EP_extzv };

/* Describes an instruction that inserts or extracts a bitfield.  */
struct extraction_insn
{
  /* The code of the instruction.  */
  enum insn_code icode;

  /* The mode that the structure operand should have.  This is byte_mode
     when using the legacy insv, extv and extzv patterns to access memory.  */
  machine_mode struct_mode;

  /* The mode of the field to be inserted or extracted, and by extension
     the mode of the insertion or extraction itself.  */
  machine_mode field_mode;

  /* The mode of the field's bit position.  This is only important
     when the position is variable rather than constant.  */
  machine_mode pos_mode;
};

bool get_best_reg_extraction_insn (extraction_insn *,
				   enum extraction_pattern,
				   unsigned HOST_WIDE_INT, machine_mode);
bool get_best_mem_extraction_insn (extraction_insn *,
				   enum extraction_pattern,
				   HOST_WIDE_INT, HOST_WIDE_INT, machine_mode);

enum insn_code can_extend_p (machine_mode, machine_mode, int);
enum insn_code can_float_p (machine_mode, machine_mode, int);
enum insn_code can_fix_p (machine_mode, machine_mode, int, bool *);
bool can_conditionally_move_p (machine_mode mode);
bool can_vec_perm_p (machine_mode, bool, const unsigned char *);
enum insn_code widening_optab_handler (optab, machine_mode, machine_mode);
/* Find a widening optab even if it doesn't widen as much as we want.  */
#define find_widening_optab_handler(A,B,C,D) \
  find_widening_optab_handler_and_mode (A, B, C, D, NULL)
enum insn_code find_widening_optab_handler_and_mode (optab, machine_mode,
						     machine_mode, int,
						     machine_mode *);
int can_mult_highpart_p (machine_mode, bool);
bool can_vec_mask_load_store_p (machine_mode, machine_mode, bool);
bool can_compare_and_swap_p (machine_mode, bool);
bool can_atomic_exchange_p (machine_mode, bool);
bool lshift_cheap_p (bool);

#endif