1 /* Tree-based target query functions relating to optabs
2 Copyright (C) 1987-2017 Free Software Foundation, Inc.
4 This file is part of GCC.
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
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
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/>. */
23 #include "coretypes.h"
25 #include "insn-codes.h"
27 #include "optabs-tree.h"
28 #include "stor-layout.h"
30 /* Return the optab used for computing the operation given by the tree code,
31 CODE and the tree EXP. This function is not always usable (for example, it
32 cannot give complete results for multiplication or division) but probably
33 ought to be relied on more widely throughout the expander. */
35 optab_for_tree_code (enum tree_code code
, const_tree type
,
36 enum optab_subtype subtype
)
48 return one_cmpl_optab
;
53 case MULT_HIGHPART_EXPR
:
54 return TYPE_UNSIGNED (type
) ? umul_highpart_optab
: smul_highpart_optab
;
60 return TYPE_UNSIGNED (type
) ? umod_optab
: smod_optab
;
68 if (TYPE_SATURATING (type
))
69 return TYPE_UNSIGNED (type
) ? usdiv_optab
: ssdiv_optab
;
70 return TYPE_UNSIGNED (type
) ? udiv_optab
: sdiv_optab
;
73 if (TREE_CODE (type
) == VECTOR_TYPE
)
75 if (subtype
== optab_vector
)
76 return TYPE_SATURATING (type
) ? unknown_optab
: vashl_optab
;
78 gcc_assert (subtype
== optab_scalar
);
80 if (TYPE_SATURATING (type
))
81 return TYPE_UNSIGNED (type
) ? usashl_optab
: ssashl_optab
;
85 if (TREE_CODE (type
) == VECTOR_TYPE
)
87 if (subtype
== optab_vector
)
88 return TYPE_UNSIGNED (type
) ? vlshr_optab
: vashr_optab
;
90 gcc_assert (subtype
== optab_scalar
);
92 return TYPE_UNSIGNED (type
) ? lshr_optab
: ashr_optab
;
95 if (TREE_CODE (type
) == VECTOR_TYPE
)
97 if (subtype
== optab_vector
)
100 gcc_assert (subtype
== optab_scalar
);
105 if (TREE_CODE (type
) == VECTOR_TYPE
)
107 if (subtype
== optab_vector
)
110 gcc_assert (subtype
== optab_scalar
);
115 return TYPE_UNSIGNED (type
) ? umax_optab
: smax_optab
;
118 return TYPE_UNSIGNED (type
) ? umin_optab
: smin_optab
;
120 case REALIGN_LOAD_EXPR
:
121 return vec_realign_load_optab
;
124 return TYPE_UNSIGNED (type
) ? usum_widen_optab
: ssum_widen_optab
;
127 return TYPE_UNSIGNED (type
) ? udot_prod_optab
: sdot_prod_optab
;
130 return TYPE_UNSIGNED (type
) ? usad_optab
: ssad_optab
;
132 case WIDEN_MULT_PLUS_EXPR
:
133 return (TYPE_UNSIGNED (type
)
134 ? (TYPE_SATURATING (type
)
135 ? usmadd_widen_optab
: umadd_widen_optab
)
136 : (TYPE_SATURATING (type
)
137 ? ssmadd_widen_optab
: smadd_widen_optab
));
139 case WIDEN_MULT_MINUS_EXPR
:
140 return (TYPE_UNSIGNED (type
)
141 ? (TYPE_SATURATING (type
)
142 ? usmsub_widen_optab
: umsub_widen_optab
)
143 : (TYPE_SATURATING (type
)
144 ? ssmsub_widen_optab
: smsub_widen_optab
));
149 case VEC_WIDEN_MULT_HI_EXPR
:
150 return TYPE_UNSIGNED (type
) ?
151 vec_widen_umult_hi_optab
: vec_widen_smult_hi_optab
;
153 case VEC_WIDEN_MULT_LO_EXPR
:
154 return TYPE_UNSIGNED (type
) ?
155 vec_widen_umult_lo_optab
: vec_widen_smult_lo_optab
;
157 case VEC_WIDEN_MULT_EVEN_EXPR
:
158 return TYPE_UNSIGNED (type
) ?
159 vec_widen_umult_even_optab
: vec_widen_smult_even_optab
;
161 case VEC_WIDEN_MULT_ODD_EXPR
:
162 return TYPE_UNSIGNED (type
) ?
163 vec_widen_umult_odd_optab
: vec_widen_smult_odd_optab
;
165 case VEC_WIDEN_LSHIFT_HI_EXPR
:
166 return TYPE_UNSIGNED (type
) ?
167 vec_widen_ushiftl_hi_optab
: vec_widen_sshiftl_hi_optab
;
169 case VEC_WIDEN_LSHIFT_LO_EXPR
:
170 return TYPE_UNSIGNED (type
) ?
171 vec_widen_ushiftl_lo_optab
: vec_widen_sshiftl_lo_optab
;
173 case VEC_UNPACK_HI_EXPR
:
174 return TYPE_UNSIGNED (type
) ?
175 vec_unpacku_hi_optab
: vec_unpacks_hi_optab
;
177 case VEC_UNPACK_LO_EXPR
:
178 return TYPE_UNSIGNED (type
) ?
179 vec_unpacku_lo_optab
: vec_unpacks_lo_optab
;
181 case VEC_UNPACK_FLOAT_HI_EXPR
:
182 /* The signedness is determined from input operand. */
183 return TYPE_UNSIGNED (type
) ?
184 vec_unpacku_float_hi_optab
: vec_unpacks_float_hi_optab
;
186 case VEC_UNPACK_FLOAT_LO_EXPR
:
187 /* The signedness is determined from input operand. */
188 return TYPE_UNSIGNED (type
) ?
189 vec_unpacku_float_lo_optab
: vec_unpacks_float_lo_optab
;
191 case VEC_PACK_TRUNC_EXPR
:
192 return vec_pack_trunc_optab
;
194 case VEC_PACK_SAT_EXPR
:
195 return TYPE_UNSIGNED (type
) ? vec_pack_usat_optab
: vec_pack_ssat_optab
;
197 case VEC_PACK_FIX_TRUNC_EXPR
:
198 /* The signedness is determined from output operand. */
199 return TYPE_UNSIGNED (type
) ?
200 vec_pack_ufix_trunc_optab
: vec_pack_sfix_trunc_optab
;
206 trapv
= INTEGRAL_TYPE_P (type
) && TYPE_OVERFLOW_TRAPS (type
);
209 case POINTER_PLUS_EXPR
:
211 if (TYPE_SATURATING (type
))
212 return TYPE_UNSIGNED (type
) ? usadd_optab
: ssadd_optab
;
213 return trapv
? addv_optab
: add_optab
;
215 case POINTER_DIFF_EXPR
:
217 if (TYPE_SATURATING (type
))
218 return TYPE_UNSIGNED (type
) ? ussub_optab
: sssub_optab
;
219 return trapv
? subv_optab
: sub_optab
;
222 if (TYPE_SATURATING (type
))
223 return TYPE_UNSIGNED (type
) ? usmul_optab
: ssmul_optab
;
224 return trapv
? smulv_optab
: smul_optab
;
227 if (TYPE_SATURATING (type
))
228 return TYPE_UNSIGNED (type
) ? usneg_optab
: ssneg_optab
;
229 return trapv
? negv_optab
: neg_optab
;
232 return trapv
? absv_optab
: abs_optab
;
235 return unknown_optab
;
239 /* Function supportable_convert_operation
241 Check whether an operation represented by the code CODE is a
242 convert operation that is supported by the target platform in
243 vector form (i.e., when operating on arguments of type VECTYPE_IN
244 producing a result of type VECTYPE_OUT).
246 Convert operations we currently support directly are FIX_TRUNC and FLOAT.
247 This function checks if these operations are supported
248 by the target platform either directly (via vector tree-codes), or via
252 - CODE1 is code of vector operation to be used when
253 vectorizing the operation, if available.
254 - DECL is decl of target builtin functions to be used
255 when vectorizing the operation, if available. In this case,
256 CODE1 is CALL_EXPR. */
259 supportable_convert_operation (enum tree_code code
,
260 tree vectype_out
, tree vectype_in
,
261 tree
*decl
, enum tree_code
*code1
)
266 m1
= TYPE_MODE (vectype_out
);
267 m2
= TYPE_MODE (vectype_in
);
269 /* First check if we can done conversion directly. */
270 if ((code
== FIX_TRUNC_EXPR
271 && can_fix_p (m1
,m2
,TYPE_UNSIGNED (vectype_out
), &truncp
)
273 || (code
== FLOAT_EXPR
274 && can_float_p (m1
,m2
,TYPE_UNSIGNED (vectype_in
))
275 != CODE_FOR_nothing
))
281 /* Now check for builtin. */
282 if (targetm
.vectorize
.builtin_conversion
283 && targetm
.vectorize
.builtin_conversion (code
, vectype_out
, vectype_in
))
286 *decl
= targetm
.vectorize
.builtin_conversion (code
, vectype_out
,
293 /* Return TRUE if appropriate vector insn is available
294 for vector comparison expr with vector type VALUE_TYPE
295 and resulting mask with MASK_TYPE. */
298 expand_vec_cmp_expr_p (tree value_type
, tree mask_type
, enum tree_code code
)
300 if (get_vec_cmp_icode (TYPE_MODE (value_type
), TYPE_MODE (mask_type
),
301 TYPE_UNSIGNED (value_type
)) != CODE_FOR_nothing
)
303 if ((code
== EQ_EXPR
|| code
== NE_EXPR
)
304 && (get_vec_cmp_eq_icode (TYPE_MODE (value_type
), TYPE_MODE (mask_type
))
305 != CODE_FOR_nothing
))
310 /* Return TRUE iff, appropriate vector insns are available
311 for vector cond expr with vector type VALUE_TYPE and a comparison
312 with operand vector types in CMP_OP_TYPE. */
315 expand_vec_cond_expr_p (tree value_type
, tree cmp_op_type
, enum tree_code code
)
317 machine_mode value_mode
= TYPE_MODE (value_type
);
318 machine_mode cmp_op_mode
= TYPE_MODE (cmp_op_type
);
319 if (VECTOR_BOOLEAN_TYPE_P (cmp_op_type
)
320 && get_vcond_mask_icode (TYPE_MODE (value_type
),
321 TYPE_MODE (cmp_op_type
)) != CODE_FOR_nothing
)
324 if (GET_MODE_SIZE (value_mode
) != GET_MODE_SIZE (cmp_op_mode
)
325 || GET_MODE_NUNITS (value_mode
) != GET_MODE_NUNITS (cmp_op_mode
))
328 if (get_vcond_icode (TYPE_MODE (value_type
), TYPE_MODE (cmp_op_type
),
329 TYPE_UNSIGNED (cmp_op_type
)) == CODE_FOR_nothing
330 && ((code
!= EQ_EXPR
&& code
!= NE_EXPR
)
331 || get_vcond_eq_icode (TYPE_MODE (value_type
),
332 TYPE_MODE (cmp_op_type
)) == CODE_FOR_nothing
))
338 /* Use the current target and options to initialize
339 TREE_OPTIMIZATION_OPTABS (OPTNODE). */
342 init_tree_optimization_optabs (tree optnode
)
344 /* Quick exit if we have already computed optabs for this target. */
345 if (TREE_OPTIMIZATION_BASE_OPTABS (optnode
) == this_target_optabs
)
348 /* Forget any previous information and set up for the current target. */
349 TREE_OPTIMIZATION_BASE_OPTABS (optnode
) = this_target_optabs
;
350 struct target_optabs
*tmp_optabs
= (struct target_optabs
*)
351 TREE_OPTIMIZATION_OPTABS (optnode
);
353 memset (tmp_optabs
, 0, sizeof (struct target_optabs
));
355 tmp_optabs
= ggc_alloc
<target_optabs
> ();
357 /* Generate a new set of optabs into tmp_optabs. */
358 init_all_optabs (tmp_optabs
);
360 /* If the optabs changed, record it. */
361 if (memcmp (tmp_optabs
, this_target_optabs
, sizeof (struct target_optabs
)))
362 TREE_OPTIMIZATION_OPTABS (optnode
) = tmp_optabs
;
365 TREE_OPTIMIZATION_OPTABS (optnode
) = NULL
;
366 ggc_free (tmp_optabs
);
370 /* Return TRUE if the target has support for vector right shift of an
371 operand of type TYPE. If OT_TYPE is OPTAB_DEFAULT, check for existence
372 of a shift by either a scalar or a vector. Otherwise, check only
373 for a shift that matches OT_TYPE. */
376 target_supports_op_p (tree type
, enum tree_code code
,
377 enum optab_subtype ot_subtype
)
379 optab ot
= optab_for_tree_code (code
, type
, ot_subtype
);
380 return (ot
!= unknown_optab
381 && optab_handler (ot
, TYPE_MODE (type
)) != CODE_FOR_nothing
);