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ebfd146a | 1 | /* Statement Analysis and Transformation for Vectorization |
62f7fd21 MM |
2 | Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
3 | Free Software Foundation, Inc. | |
b8698a0f | 4 | Contributed by Dorit Naishlos <dorit@il.ibm.com> |
ebfd146a IR |
5 | and Ira Rosen <irar@il.ibm.com> |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 3, or (at your option) any later | |
12 | version. | |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GCC; see the file COPYING3. If not see | |
21 | <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
26 | #include "tm.h" | |
27 | #include "ggc.h" | |
28 | #include "tree.h" | |
29 | #include "target.h" | |
30 | #include "basic-block.h" | |
cf835838 JM |
31 | #include "tree-pretty-print.h" |
32 | #include "gimple-pretty-print.h" | |
ebfd146a IR |
33 | #include "tree-flow.h" |
34 | #include "tree-dump.h" | |
35 | #include "cfgloop.h" | |
36 | #include "cfglayout.h" | |
37 | #include "expr.h" | |
38 | #include "recog.h" | |
39 | #include "optabs.h" | |
718f9c0f | 40 | #include "diagnostic-core.h" |
ebfd146a IR |
41 | #include "toplev.h" |
42 | #include "tree-vectorizer.h" | |
43 | #include "langhooks.h" | |
44 | ||
45 | ||
46 | /* Utility functions used by vect_mark_stmts_to_be_vectorized. */ | |
47 | ||
48 | /* Function vect_mark_relevant. | |
49 | ||
50 | Mark STMT as "relevant for vectorization" and add it to WORKLIST. */ | |
51 | ||
52 | static void | |
53 | vect_mark_relevant (VEC(gimple,heap) **worklist, gimple stmt, | |
54 | enum vect_relevant relevant, bool live_p) | |
55 | { | |
56 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
57 | enum vect_relevant save_relevant = STMT_VINFO_RELEVANT (stmt_info); | |
58 | bool save_live_p = STMT_VINFO_LIVE_P (stmt_info); | |
59 | ||
60 | if (vect_print_dump_info (REPORT_DETAILS)) | |
61 | fprintf (vect_dump, "mark relevant %d, live %d.", relevant, live_p); | |
62 | ||
63 | if (STMT_VINFO_IN_PATTERN_P (stmt_info)) | |
64 | { | |
65 | gimple pattern_stmt; | |
66 | ||
b8698a0f | 67 | /* This is the last stmt in a sequence that was detected as a |
ebfd146a IR |
68 | pattern that can potentially be vectorized. Don't mark the stmt |
69 | as relevant/live because it's not going to be vectorized. | |
70 | Instead mark the pattern-stmt that replaces it. */ | |
71 | ||
72 | pattern_stmt = STMT_VINFO_RELATED_STMT (stmt_info); | |
73 | ||
74 | if (vect_print_dump_info (REPORT_DETAILS)) | |
75 | fprintf (vect_dump, "last stmt in pattern. don't mark relevant/live."); | |
76 | stmt_info = vinfo_for_stmt (pattern_stmt); | |
77 | gcc_assert (STMT_VINFO_RELATED_STMT (stmt_info) == stmt); | |
78 | save_relevant = STMT_VINFO_RELEVANT (stmt_info); | |
79 | save_live_p = STMT_VINFO_LIVE_P (stmt_info); | |
80 | stmt = pattern_stmt; | |
81 | } | |
82 | ||
83 | STMT_VINFO_LIVE_P (stmt_info) |= live_p; | |
84 | if (relevant > STMT_VINFO_RELEVANT (stmt_info)) | |
85 | STMT_VINFO_RELEVANT (stmt_info) = relevant; | |
86 | ||
87 | if (STMT_VINFO_RELEVANT (stmt_info) == save_relevant | |
88 | && STMT_VINFO_LIVE_P (stmt_info) == save_live_p) | |
89 | { | |
90 | if (vect_print_dump_info (REPORT_DETAILS)) | |
91 | fprintf (vect_dump, "already marked relevant/live."); | |
92 | return; | |
93 | } | |
94 | ||
95 | VEC_safe_push (gimple, heap, *worklist, stmt); | |
96 | } | |
97 | ||
98 | ||
99 | /* Function vect_stmt_relevant_p. | |
100 | ||
101 | Return true if STMT in loop that is represented by LOOP_VINFO is | |
102 | "relevant for vectorization". | |
103 | ||
104 | A stmt is considered "relevant for vectorization" if: | |
105 | - it has uses outside the loop. | |
106 | - it has vdefs (it alters memory). | |
107 | - control stmts in the loop (except for the exit condition). | |
108 | ||
109 | CHECKME: what other side effects would the vectorizer allow? */ | |
110 | ||
111 | static bool | |
112 | vect_stmt_relevant_p (gimple stmt, loop_vec_info loop_vinfo, | |
113 | enum vect_relevant *relevant, bool *live_p) | |
114 | { | |
115 | struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); | |
116 | ssa_op_iter op_iter; | |
117 | imm_use_iterator imm_iter; | |
118 | use_operand_p use_p; | |
119 | def_operand_p def_p; | |
120 | ||
8644a673 | 121 | *relevant = vect_unused_in_scope; |
ebfd146a IR |
122 | *live_p = false; |
123 | ||
124 | /* cond stmt other than loop exit cond. */ | |
b8698a0f L |
125 | if (is_ctrl_stmt (stmt) |
126 | && STMT_VINFO_TYPE (vinfo_for_stmt (stmt)) | |
127 | != loop_exit_ctrl_vec_info_type) | |
8644a673 | 128 | *relevant = vect_used_in_scope; |
ebfd146a IR |
129 | |
130 | /* changing memory. */ | |
131 | if (gimple_code (stmt) != GIMPLE_PHI) | |
5006671f | 132 | if (gimple_vdef (stmt)) |
ebfd146a IR |
133 | { |
134 | if (vect_print_dump_info (REPORT_DETAILS)) | |
135 | fprintf (vect_dump, "vec_stmt_relevant_p: stmt has vdefs."); | |
8644a673 | 136 | *relevant = vect_used_in_scope; |
ebfd146a IR |
137 | } |
138 | ||
139 | /* uses outside the loop. */ | |
140 | FOR_EACH_PHI_OR_STMT_DEF (def_p, stmt, op_iter, SSA_OP_DEF) | |
141 | { | |
142 | FOR_EACH_IMM_USE_FAST (use_p, imm_iter, DEF_FROM_PTR (def_p)) | |
143 | { | |
144 | basic_block bb = gimple_bb (USE_STMT (use_p)); | |
145 | if (!flow_bb_inside_loop_p (loop, bb)) | |
146 | { | |
147 | if (vect_print_dump_info (REPORT_DETAILS)) | |
148 | fprintf (vect_dump, "vec_stmt_relevant_p: used out of loop."); | |
149 | ||
3157b0c2 AO |
150 | if (is_gimple_debug (USE_STMT (use_p))) |
151 | continue; | |
152 | ||
ebfd146a IR |
153 | /* We expect all such uses to be in the loop exit phis |
154 | (because of loop closed form) */ | |
155 | gcc_assert (gimple_code (USE_STMT (use_p)) == GIMPLE_PHI); | |
156 | gcc_assert (bb == single_exit (loop)->dest); | |
157 | ||
158 | *live_p = true; | |
159 | } | |
160 | } | |
161 | } | |
162 | ||
163 | return (*live_p || *relevant); | |
164 | } | |
165 | ||
166 | ||
b8698a0f | 167 | /* Function exist_non_indexing_operands_for_use_p |
ebfd146a | 168 | |
b8698a0f | 169 | USE is one of the uses attached to STMT. Check if USE is |
ebfd146a IR |
170 | used in STMT for anything other than indexing an array. */ |
171 | ||
172 | static bool | |
173 | exist_non_indexing_operands_for_use_p (tree use, gimple stmt) | |
174 | { | |
175 | tree operand; | |
176 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
59a05b0c | 177 | |
ebfd146a IR |
178 | /* USE corresponds to some operand in STMT. If there is no data |
179 | reference in STMT, then any operand that corresponds to USE | |
180 | is not indexing an array. */ | |
181 | if (!STMT_VINFO_DATA_REF (stmt_info)) | |
182 | return true; | |
59a05b0c | 183 | |
ebfd146a IR |
184 | /* STMT has a data_ref. FORNOW this means that its of one of |
185 | the following forms: | |
186 | -1- ARRAY_REF = var | |
187 | -2- var = ARRAY_REF | |
188 | (This should have been verified in analyze_data_refs). | |
189 | ||
190 | 'var' in the second case corresponds to a def, not a use, | |
b8698a0f | 191 | so USE cannot correspond to any operands that are not used |
ebfd146a IR |
192 | for array indexing. |
193 | ||
194 | Therefore, all we need to check is if STMT falls into the | |
195 | first case, and whether var corresponds to USE. */ | |
ebfd146a IR |
196 | |
197 | if (!gimple_assign_copy_p (stmt)) | |
198 | return false; | |
59a05b0c EB |
199 | if (TREE_CODE (gimple_assign_lhs (stmt)) == SSA_NAME) |
200 | return false; | |
ebfd146a | 201 | operand = gimple_assign_rhs1 (stmt); |
ebfd146a IR |
202 | if (TREE_CODE (operand) != SSA_NAME) |
203 | return false; | |
204 | ||
205 | if (operand == use) | |
206 | return true; | |
207 | ||
208 | return false; | |
209 | } | |
210 | ||
211 | ||
b8698a0f | 212 | /* |
ebfd146a IR |
213 | Function process_use. |
214 | ||
215 | Inputs: | |
216 | - a USE in STMT in a loop represented by LOOP_VINFO | |
b8698a0f | 217 | - LIVE_P, RELEVANT - enum values to be set in the STMT_VINFO of the stmt |
ebfd146a IR |
218 | that defined USE. This is done by calling mark_relevant and passing it |
219 | the WORKLIST (to add DEF_STMT to the WORKLIST in case it is relevant). | |
220 | ||
221 | Outputs: | |
222 | Generally, LIVE_P and RELEVANT are used to define the liveness and | |
223 | relevance info of the DEF_STMT of this USE: | |
224 | STMT_VINFO_LIVE_P (DEF_STMT_info) <-- live_p | |
225 | STMT_VINFO_RELEVANT (DEF_STMT_info) <-- relevant | |
226 | Exceptions: | |
227 | - case 1: If USE is used only for address computations (e.g. array indexing), | |
b8698a0f | 228 | which does not need to be directly vectorized, then the liveness/relevance |
ebfd146a | 229 | of the respective DEF_STMT is left unchanged. |
b8698a0f L |
230 | - case 2: If STMT is a reduction phi and DEF_STMT is a reduction stmt, we |
231 | skip DEF_STMT cause it had already been processed. | |
ebfd146a IR |
232 | - case 3: If DEF_STMT and STMT are in different nests, then "relevant" will |
233 | be modified accordingly. | |
234 | ||
235 | Return true if everything is as expected. Return false otherwise. */ | |
236 | ||
237 | static bool | |
b8698a0f | 238 | process_use (gimple stmt, tree use, loop_vec_info loop_vinfo, bool live_p, |
ebfd146a IR |
239 | enum vect_relevant relevant, VEC(gimple,heap) **worklist) |
240 | { | |
241 | struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); | |
242 | stmt_vec_info stmt_vinfo = vinfo_for_stmt (stmt); | |
243 | stmt_vec_info dstmt_vinfo; | |
244 | basic_block bb, def_bb; | |
245 | tree def; | |
246 | gimple def_stmt; | |
247 | enum vect_def_type dt; | |
248 | ||
b8698a0f | 249 | /* case 1: we are only interested in uses that need to be vectorized. Uses |
ebfd146a IR |
250 | that are used for address computation are not considered relevant. */ |
251 | if (!exist_non_indexing_operands_for_use_p (use, stmt)) | |
252 | return true; | |
253 | ||
a70d6342 | 254 | if (!vect_is_simple_use (use, loop_vinfo, NULL, &def_stmt, &def, &dt)) |
b8698a0f | 255 | { |
8644a673 | 256 | if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) |
ebfd146a IR |
257 | fprintf (vect_dump, "not vectorized: unsupported use in stmt."); |
258 | return false; | |
259 | } | |
260 | ||
261 | if (!def_stmt || gimple_nop_p (def_stmt)) | |
262 | return true; | |
263 | ||
264 | def_bb = gimple_bb (def_stmt); | |
265 | if (!flow_bb_inside_loop_p (loop, def_bb)) | |
266 | { | |
267 | if (vect_print_dump_info (REPORT_DETAILS)) | |
268 | fprintf (vect_dump, "def_stmt is out of loop."); | |
269 | return true; | |
270 | } | |
271 | ||
b8698a0f L |
272 | /* case 2: A reduction phi (STMT) defined by a reduction stmt (DEF_STMT). |
273 | DEF_STMT must have already been processed, because this should be the | |
274 | only way that STMT, which is a reduction-phi, was put in the worklist, | |
275 | as there should be no other uses for DEF_STMT in the loop. So we just | |
ebfd146a IR |
276 | check that everything is as expected, and we are done. */ |
277 | dstmt_vinfo = vinfo_for_stmt (def_stmt); | |
278 | bb = gimple_bb (stmt); | |
279 | if (gimple_code (stmt) == GIMPLE_PHI | |
280 | && STMT_VINFO_DEF_TYPE (stmt_vinfo) == vect_reduction_def | |
281 | && gimple_code (def_stmt) != GIMPLE_PHI | |
282 | && STMT_VINFO_DEF_TYPE (dstmt_vinfo) == vect_reduction_def | |
283 | && bb->loop_father == def_bb->loop_father) | |
284 | { | |
285 | if (vect_print_dump_info (REPORT_DETAILS)) | |
286 | fprintf (vect_dump, "reduc-stmt defining reduc-phi in the same nest."); | |
287 | if (STMT_VINFO_IN_PATTERN_P (dstmt_vinfo)) | |
288 | dstmt_vinfo = vinfo_for_stmt (STMT_VINFO_RELATED_STMT (dstmt_vinfo)); | |
289 | gcc_assert (STMT_VINFO_RELEVANT (dstmt_vinfo) < vect_used_by_reduction); | |
b8698a0f | 290 | gcc_assert (STMT_VINFO_LIVE_P (dstmt_vinfo) |
8644a673 | 291 | || STMT_VINFO_RELEVANT (dstmt_vinfo) > vect_unused_in_scope); |
ebfd146a IR |
292 | return true; |
293 | } | |
294 | ||
295 | /* case 3a: outer-loop stmt defining an inner-loop stmt: | |
296 | outer-loop-header-bb: | |
297 | d = def_stmt | |
298 | inner-loop: | |
299 | stmt # use (d) | |
300 | outer-loop-tail-bb: | |
301 | ... */ | |
302 | if (flow_loop_nested_p (def_bb->loop_father, bb->loop_father)) | |
303 | { | |
304 | if (vect_print_dump_info (REPORT_DETAILS)) | |
305 | fprintf (vect_dump, "outer-loop def-stmt defining inner-loop stmt."); | |
7c5222ff | 306 | |
ebfd146a IR |
307 | switch (relevant) |
308 | { | |
8644a673 | 309 | case vect_unused_in_scope: |
7c5222ff IR |
310 | relevant = (STMT_VINFO_DEF_TYPE (stmt_vinfo) == vect_nested_cycle) ? |
311 | vect_used_in_scope : vect_unused_in_scope; | |
ebfd146a | 312 | break; |
7c5222ff | 313 | |
ebfd146a | 314 | case vect_used_in_outer_by_reduction: |
7c5222ff | 315 | gcc_assert (STMT_VINFO_DEF_TYPE (stmt_vinfo) != vect_reduction_def); |
ebfd146a IR |
316 | relevant = vect_used_by_reduction; |
317 | break; | |
7c5222ff | 318 | |
ebfd146a | 319 | case vect_used_in_outer: |
7c5222ff | 320 | gcc_assert (STMT_VINFO_DEF_TYPE (stmt_vinfo) != vect_reduction_def); |
8644a673 | 321 | relevant = vect_used_in_scope; |
ebfd146a | 322 | break; |
7c5222ff | 323 | |
8644a673 | 324 | case vect_used_in_scope: |
ebfd146a IR |
325 | break; |
326 | ||
327 | default: | |
328 | gcc_unreachable (); | |
b8698a0f | 329 | } |
ebfd146a IR |
330 | } |
331 | ||
332 | /* case 3b: inner-loop stmt defining an outer-loop stmt: | |
333 | outer-loop-header-bb: | |
334 | ... | |
335 | inner-loop: | |
336 | d = def_stmt | |
06066f92 | 337 | outer-loop-tail-bb (or outer-loop-exit-bb in double reduction): |
ebfd146a IR |
338 | stmt # use (d) */ |
339 | else if (flow_loop_nested_p (bb->loop_father, def_bb->loop_father)) | |
340 | { | |
341 | if (vect_print_dump_info (REPORT_DETAILS)) | |
342 | fprintf (vect_dump, "inner-loop def-stmt defining outer-loop stmt."); | |
7c5222ff | 343 | |
ebfd146a IR |
344 | switch (relevant) |
345 | { | |
8644a673 | 346 | case vect_unused_in_scope: |
b8698a0f | 347 | relevant = (STMT_VINFO_DEF_TYPE (stmt_vinfo) == vect_reduction_def |
06066f92 | 348 | || STMT_VINFO_DEF_TYPE (stmt_vinfo) == vect_double_reduction_def) ? |
a70d6342 | 349 | vect_used_in_outer_by_reduction : vect_unused_in_scope; |
ebfd146a IR |
350 | break; |
351 | ||
ebfd146a IR |
352 | case vect_used_by_reduction: |
353 | relevant = vect_used_in_outer_by_reduction; | |
354 | break; | |
355 | ||
8644a673 | 356 | case vect_used_in_scope: |
ebfd146a IR |
357 | relevant = vect_used_in_outer; |
358 | break; | |
359 | ||
360 | default: | |
361 | gcc_unreachable (); | |
362 | } | |
363 | } | |
364 | ||
365 | vect_mark_relevant (worklist, def_stmt, relevant, live_p); | |
366 | return true; | |
367 | } | |
368 | ||
369 | ||
370 | /* Function vect_mark_stmts_to_be_vectorized. | |
371 | ||
372 | Not all stmts in the loop need to be vectorized. For example: | |
373 | ||
374 | for i... | |
375 | for j... | |
376 | 1. T0 = i + j | |
377 | 2. T1 = a[T0] | |
378 | ||
379 | 3. j = j + 1 | |
380 | ||
381 | Stmt 1 and 3 do not need to be vectorized, because loop control and | |
382 | addressing of vectorized data-refs are handled differently. | |
383 | ||
384 | This pass detects such stmts. */ | |
385 | ||
386 | bool | |
387 | vect_mark_stmts_to_be_vectorized (loop_vec_info loop_vinfo) | |
388 | { | |
389 | VEC(gimple,heap) *worklist; | |
390 | struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); | |
391 | basic_block *bbs = LOOP_VINFO_BBS (loop_vinfo); | |
392 | unsigned int nbbs = loop->num_nodes; | |
393 | gimple_stmt_iterator si; | |
394 | gimple stmt; | |
395 | unsigned int i; | |
396 | stmt_vec_info stmt_vinfo; | |
397 | basic_block bb; | |
398 | gimple phi; | |
399 | bool live_p; | |
06066f92 IR |
400 | enum vect_relevant relevant, tmp_relevant; |
401 | enum vect_def_type def_type; | |
ebfd146a IR |
402 | |
403 | if (vect_print_dump_info (REPORT_DETAILS)) | |
404 | fprintf (vect_dump, "=== vect_mark_stmts_to_be_vectorized ==="); | |
405 | ||
406 | worklist = VEC_alloc (gimple, heap, 64); | |
407 | ||
408 | /* 1. Init worklist. */ | |
409 | for (i = 0; i < nbbs; i++) | |
410 | { | |
411 | bb = bbs[i]; | |
412 | for (si = gsi_start_phis (bb); !gsi_end_p (si); gsi_next (&si)) | |
b8698a0f | 413 | { |
ebfd146a IR |
414 | phi = gsi_stmt (si); |
415 | if (vect_print_dump_info (REPORT_DETAILS)) | |
416 | { | |
417 | fprintf (vect_dump, "init: phi relevant? "); | |
418 | print_gimple_stmt (vect_dump, phi, 0, TDF_SLIM); | |
419 | } | |
420 | ||
421 | if (vect_stmt_relevant_p (phi, loop_vinfo, &relevant, &live_p)) | |
422 | vect_mark_relevant (&worklist, phi, relevant, live_p); | |
423 | } | |
424 | for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si)) | |
425 | { | |
426 | stmt = gsi_stmt (si); | |
427 | if (vect_print_dump_info (REPORT_DETAILS)) | |
428 | { | |
429 | fprintf (vect_dump, "init: stmt relevant? "); | |
430 | print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM); | |
b8698a0f | 431 | } |
ebfd146a IR |
432 | |
433 | if (vect_stmt_relevant_p (stmt, loop_vinfo, &relevant, &live_p)) | |
434 | vect_mark_relevant (&worklist, stmt, relevant, live_p); | |
435 | } | |
436 | } | |
437 | ||
438 | /* 2. Process_worklist */ | |
439 | while (VEC_length (gimple, worklist) > 0) | |
440 | { | |
441 | use_operand_p use_p; | |
442 | ssa_op_iter iter; | |
443 | ||
444 | stmt = VEC_pop (gimple, worklist); | |
445 | if (vect_print_dump_info (REPORT_DETAILS)) | |
446 | { | |
447 | fprintf (vect_dump, "worklist: examine stmt: "); | |
448 | print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM); | |
449 | } | |
450 | ||
b8698a0f L |
451 | /* Examine the USEs of STMT. For each USE, mark the stmt that defines it |
452 | (DEF_STMT) as relevant/irrelevant and live/dead according to the | |
ebfd146a IR |
453 | liveness and relevance properties of STMT. */ |
454 | stmt_vinfo = vinfo_for_stmt (stmt); | |
455 | relevant = STMT_VINFO_RELEVANT (stmt_vinfo); | |
456 | live_p = STMT_VINFO_LIVE_P (stmt_vinfo); | |
457 | ||
458 | /* Generally, the liveness and relevance properties of STMT are | |
459 | propagated as is to the DEF_STMTs of its USEs: | |
460 | live_p <-- STMT_VINFO_LIVE_P (STMT_VINFO) | |
461 | relevant <-- STMT_VINFO_RELEVANT (STMT_VINFO) | |
462 | ||
463 | One exception is when STMT has been identified as defining a reduction | |
464 | variable; in this case we set the liveness/relevance as follows: | |
465 | live_p = false | |
466 | relevant = vect_used_by_reduction | |
467 | This is because we distinguish between two kinds of relevant stmts - | |
b8698a0f L |
468 | those that are used by a reduction computation, and those that are |
469 | (also) used by a regular computation. This allows us later on to | |
470 | identify stmts that are used solely by a reduction, and therefore the | |
7c5222ff | 471 | order of the results that they produce does not have to be kept. */ |
ebfd146a | 472 | |
06066f92 IR |
473 | def_type = STMT_VINFO_DEF_TYPE (stmt_vinfo); |
474 | tmp_relevant = relevant; | |
475 | switch (def_type) | |
ebfd146a | 476 | { |
06066f92 IR |
477 | case vect_reduction_def: |
478 | switch (tmp_relevant) | |
479 | { | |
480 | case vect_unused_in_scope: | |
481 | relevant = vect_used_by_reduction; | |
482 | break; | |
483 | ||
484 | case vect_used_by_reduction: | |
485 | if (gimple_code (stmt) == GIMPLE_PHI) | |
486 | break; | |
487 | /* fall through */ | |
488 | ||
489 | default: | |
490 | if (vect_print_dump_info (REPORT_DETAILS)) | |
491 | fprintf (vect_dump, "unsupported use of reduction."); | |
492 | ||
493 | VEC_free (gimple, heap, worklist); | |
494 | return false; | |
495 | } | |
496 | ||
b8698a0f | 497 | live_p = false; |
06066f92 | 498 | break; |
b8698a0f | 499 | |
06066f92 IR |
500 | case vect_nested_cycle: |
501 | if (tmp_relevant != vect_unused_in_scope | |
502 | && tmp_relevant != vect_used_in_outer_by_reduction | |
503 | && tmp_relevant != vect_used_in_outer) | |
504 | { | |
505 | if (vect_print_dump_info (REPORT_DETAILS)) | |
506 | fprintf (vect_dump, "unsupported use of nested cycle."); | |
7c5222ff | 507 | |
06066f92 IR |
508 | VEC_free (gimple, heap, worklist); |
509 | return false; | |
510 | } | |
7c5222ff | 511 | |
b8698a0f L |
512 | live_p = false; |
513 | break; | |
514 | ||
06066f92 IR |
515 | case vect_double_reduction_def: |
516 | if (tmp_relevant != vect_unused_in_scope | |
517 | && tmp_relevant != vect_used_by_reduction) | |
518 | { | |
7c5222ff | 519 | if (vect_print_dump_info (REPORT_DETAILS)) |
06066f92 | 520 | fprintf (vect_dump, "unsupported use of double reduction."); |
7c5222ff IR |
521 | |
522 | VEC_free (gimple, heap, worklist); | |
523 | return false; | |
06066f92 IR |
524 | } |
525 | ||
526 | live_p = false; | |
b8698a0f | 527 | break; |
7c5222ff | 528 | |
06066f92 IR |
529 | default: |
530 | break; | |
7c5222ff | 531 | } |
b8698a0f | 532 | |
ebfd146a IR |
533 | FOR_EACH_PHI_OR_STMT_USE (use_p, stmt, iter, SSA_OP_USE) |
534 | { | |
535 | tree op = USE_FROM_PTR (use_p); | |
536 | if (!process_use (stmt, op, loop_vinfo, live_p, relevant, &worklist)) | |
537 | { | |
538 | VEC_free (gimple, heap, worklist); | |
539 | return false; | |
540 | } | |
541 | } | |
542 | } /* while worklist */ | |
543 | ||
544 | VEC_free (gimple, heap, worklist); | |
545 | return true; | |
546 | } | |
547 | ||
548 | ||
720f5239 IR |
549 | /* Get cost by calling cost target builtin. */ |
550 | ||
551 | static inline | |
552 | int vect_get_stmt_cost (enum vect_cost_for_stmt type_of_cost) | |
553 | { | |
554 | tree dummy_type = NULL; | |
555 | int dummy = 0; | |
556 | ||
557 | return targetm.vectorize.builtin_vectorization_cost (type_of_cost, | |
558 | dummy_type, dummy); | |
559 | } | |
560 | ||
ebfd146a IR |
561 | int |
562 | cost_for_stmt (gimple stmt) | |
563 | { | |
564 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
565 | ||
566 | switch (STMT_VINFO_TYPE (stmt_info)) | |
567 | { | |
568 | case load_vec_info_type: | |
720f5239 | 569 | return vect_get_stmt_cost (scalar_load); |
ebfd146a | 570 | case store_vec_info_type: |
720f5239 | 571 | return vect_get_stmt_cost (scalar_store); |
ebfd146a IR |
572 | case op_vec_info_type: |
573 | case condition_vec_info_type: | |
574 | case assignment_vec_info_type: | |
575 | case reduc_vec_info_type: | |
576 | case induc_vec_info_type: | |
577 | case type_promotion_vec_info_type: | |
578 | case type_demotion_vec_info_type: | |
579 | case type_conversion_vec_info_type: | |
580 | case call_vec_info_type: | |
720f5239 | 581 | return vect_get_stmt_cost (scalar_stmt); |
ebfd146a IR |
582 | case undef_vec_info_type: |
583 | default: | |
584 | gcc_unreachable (); | |
585 | } | |
586 | } | |
587 | ||
b8698a0f | 588 | /* Function vect_model_simple_cost. |
ebfd146a | 589 | |
b8698a0f | 590 | Models cost for simple operations, i.e. those that only emit ncopies of a |
ebfd146a IR |
591 | single op. Right now, this does not account for multiple insns that could |
592 | be generated for the single vector op. We will handle that shortly. */ | |
593 | ||
594 | void | |
b8698a0f | 595 | vect_model_simple_cost (stmt_vec_info stmt_info, int ncopies, |
ebfd146a IR |
596 | enum vect_def_type *dt, slp_tree slp_node) |
597 | { | |
598 | int i; | |
599 | int inside_cost = 0, outside_cost = 0; | |
600 | ||
601 | /* The SLP costs were already calculated during SLP tree build. */ | |
602 | if (PURE_SLP_STMT (stmt_info)) | |
603 | return; | |
604 | ||
720f5239 | 605 | inside_cost = ncopies * vect_get_stmt_cost (vector_stmt); |
ebfd146a IR |
606 | |
607 | /* FORNOW: Assuming maximum 2 args per stmts. */ | |
608 | for (i = 0; i < 2; i++) | |
609 | { | |
8644a673 | 610 | if (dt[i] == vect_constant_def || dt[i] == vect_external_def) |
720f5239 | 611 | outside_cost += vect_get_stmt_cost (vector_stmt); |
ebfd146a | 612 | } |
b8698a0f | 613 | |
ebfd146a IR |
614 | if (vect_print_dump_info (REPORT_COST)) |
615 | fprintf (vect_dump, "vect_model_simple_cost: inside_cost = %d, " | |
616 | "outside_cost = %d .", inside_cost, outside_cost); | |
617 | ||
618 | /* Set the costs either in STMT_INFO or SLP_NODE (if exists). */ | |
619 | stmt_vinfo_set_inside_of_loop_cost (stmt_info, slp_node, inside_cost); | |
620 | stmt_vinfo_set_outside_of_loop_cost (stmt_info, slp_node, outside_cost); | |
621 | } | |
622 | ||
623 | ||
b8698a0f L |
624 | /* Function vect_cost_strided_group_size |
625 | ||
ebfd146a IR |
626 | For strided load or store, return the group_size only if it is the first |
627 | load or store of a group, else return 1. This ensures that group size is | |
628 | only returned once per group. */ | |
629 | ||
630 | static int | |
631 | vect_cost_strided_group_size (stmt_vec_info stmt_info) | |
632 | { | |
633 | gimple first_stmt = DR_GROUP_FIRST_DR (stmt_info); | |
634 | ||
635 | if (first_stmt == STMT_VINFO_STMT (stmt_info)) | |
636 | return DR_GROUP_SIZE (stmt_info); | |
637 | ||
638 | return 1; | |
639 | } | |
640 | ||
641 | ||
642 | /* Function vect_model_store_cost | |
643 | ||
644 | Models cost for stores. In the case of strided accesses, one access | |
645 | has the overhead of the strided access attributed to it. */ | |
646 | ||
647 | void | |
b8698a0f | 648 | vect_model_store_cost (stmt_vec_info stmt_info, int ncopies, |
ebfd146a IR |
649 | enum vect_def_type dt, slp_tree slp_node) |
650 | { | |
651 | int group_size; | |
720f5239 IR |
652 | unsigned int inside_cost = 0, outside_cost = 0; |
653 | struct data_reference *first_dr; | |
654 | gimple first_stmt; | |
ebfd146a IR |
655 | |
656 | /* The SLP costs were already calculated during SLP tree build. */ | |
657 | if (PURE_SLP_STMT (stmt_info)) | |
658 | return; | |
659 | ||
8644a673 | 660 | if (dt == vect_constant_def || dt == vect_external_def) |
720f5239 | 661 | outside_cost = vect_get_stmt_cost (scalar_to_vec); |
ebfd146a IR |
662 | |
663 | /* Strided access? */ | |
720f5239 IR |
664 | if (DR_GROUP_FIRST_DR (stmt_info)) |
665 | { | |
666 | if (slp_node) | |
667 | { | |
668 | first_stmt = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (slp_node), 0); | |
669 | group_size = 1; | |
670 | } | |
671 | else | |
672 | { | |
673 | first_stmt = DR_GROUP_FIRST_DR (stmt_info); | |
674 | group_size = vect_cost_strided_group_size (stmt_info); | |
675 | } | |
676 | ||
677 | first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (first_stmt)); | |
678 | } | |
ebfd146a IR |
679 | /* Not a strided access. */ |
680 | else | |
720f5239 IR |
681 | { |
682 | group_size = 1; | |
683 | first_dr = STMT_VINFO_DATA_REF (stmt_info); | |
684 | } | |
ebfd146a | 685 | |
b8698a0f | 686 | /* Is this an access in a group of stores, which provide strided access? |
ebfd146a | 687 | If so, add in the cost of the permutes. */ |
b8698a0f | 688 | if (group_size > 1) |
ebfd146a IR |
689 | { |
690 | /* Uses a high and low interleave operation for each needed permute. */ | |
b8698a0f | 691 | inside_cost = ncopies * exact_log2(group_size) * group_size |
720f5239 | 692 | * vect_get_stmt_cost (vector_stmt); |
ebfd146a IR |
693 | |
694 | if (vect_print_dump_info (REPORT_COST)) | |
695 | fprintf (vect_dump, "vect_model_store_cost: strided group_size = %d .", | |
696 | group_size); | |
697 | ||
698 | } | |
699 | ||
700 | /* Costs of the stores. */ | |
720f5239 | 701 | vect_get_store_cost (first_dr, ncopies, &inside_cost); |
ebfd146a IR |
702 | |
703 | if (vect_print_dump_info (REPORT_COST)) | |
704 | fprintf (vect_dump, "vect_model_store_cost: inside_cost = %d, " | |
705 | "outside_cost = %d .", inside_cost, outside_cost); | |
706 | ||
707 | /* Set the costs either in STMT_INFO or SLP_NODE (if exists). */ | |
708 | stmt_vinfo_set_inside_of_loop_cost (stmt_info, slp_node, inside_cost); | |
709 | stmt_vinfo_set_outside_of_loop_cost (stmt_info, slp_node, outside_cost); | |
710 | } | |
711 | ||
712 | ||
720f5239 IR |
713 | /* Calculate cost of DR's memory access. */ |
714 | void | |
715 | vect_get_store_cost (struct data_reference *dr, int ncopies, | |
716 | unsigned int *inside_cost) | |
717 | { | |
718 | int alignment_support_scheme = vect_supportable_dr_alignment (dr, false); | |
719 | ||
720 | switch (alignment_support_scheme) | |
721 | { | |
722 | case dr_aligned: | |
723 | { | |
724 | *inside_cost += ncopies * vect_get_stmt_cost (vector_store); | |
725 | ||
726 | if (vect_print_dump_info (REPORT_COST)) | |
727 | fprintf (vect_dump, "vect_model_store_cost: aligned."); | |
728 | ||
729 | break; | |
730 | } | |
731 | ||
732 | case dr_unaligned_supported: | |
733 | { | |
734 | gimple stmt = DR_STMT (dr); | |
735 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
736 | tree vectype = STMT_VINFO_VECTYPE (stmt_info); | |
737 | ||
738 | /* Here, we assign an additional cost for the unaligned store. */ | |
739 | *inside_cost += ncopies | |
740 | * targetm.vectorize.builtin_vectorization_cost (unaligned_store, | |
741 | vectype, DR_MISALIGNMENT (dr)); | |
742 | ||
743 | if (vect_print_dump_info (REPORT_COST)) | |
744 | fprintf (vect_dump, "vect_model_store_cost: unaligned supported by " | |
745 | "hardware."); | |
746 | ||
747 | break; | |
748 | } | |
749 | ||
750 | default: | |
751 | gcc_unreachable (); | |
752 | } | |
753 | } | |
754 | ||
755 | ||
ebfd146a IR |
756 | /* Function vect_model_load_cost |
757 | ||
758 | Models cost for loads. In the case of strided accesses, the last access | |
759 | has the overhead of the strided access attributed to it. Since unaligned | |
b8698a0f | 760 | accesses are supported for loads, we also account for the costs of the |
ebfd146a IR |
761 | access scheme chosen. */ |
762 | ||
763 | void | |
764 | vect_model_load_cost (stmt_vec_info stmt_info, int ncopies, slp_tree slp_node) | |
b8698a0f | 765 | |
ebfd146a IR |
766 | { |
767 | int group_size; | |
ebfd146a IR |
768 | gimple first_stmt; |
769 | struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info), *first_dr; | |
720f5239 | 770 | unsigned int inside_cost = 0, outside_cost = 0; |
ebfd146a IR |
771 | |
772 | /* The SLP costs were already calculated during SLP tree build. */ | |
773 | if (PURE_SLP_STMT (stmt_info)) | |
774 | return; | |
775 | ||
776 | /* Strided accesses? */ | |
777 | first_stmt = DR_GROUP_FIRST_DR (stmt_info); | |
778 | if (first_stmt && !slp_node) | |
779 | { | |
780 | group_size = vect_cost_strided_group_size (stmt_info); | |
781 | first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (first_stmt)); | |
782 | } | |
783 | /* Not a strided access. */ | |
784 | else | |
785 | { | |
786 | group_size = 1; | |
787 | first_dr = dr; | |
788 | } | |
789 | ||
b8698a0f | 790 | /* Is this an access in a group of loads providing strided access? |
ebfd146a | 791 | If so, add in the cost of the permutes. */ |
b8698a0f | 792 | if (group_size > 1) |
ebfd146a IR |
793 | { |
794 | /* Uses an even and odd extract operations for each needed permute. */ | |
795 | inside_cost = ncopies * exact_log2(group_size) * group_size | |
720f5239 | 796 | * vect_get_stmt_cost (vector_stmt); |
ebfd146a IR |
797 | |
798 | if (vect_print_dump_info (REPORT_COST)) | |
799 | fprintf (vect_dump, "vect_model_load_cost: strided group_size = %d .", | |
800 | group_size); | |
ebfd146a IR |
801 | } |
802 | ||
803 | /* The loads themselves. */ | |
720f5239 IR |
804 | vect_get_load_cost (first_dr, ncopies, |
805 | ((!DR_GROUP_FIRST_DR (stmt_info)) || group_size > 1 || slp_node), | |
806 | &inside_cost, &outside_cost); | |
807 | ||
808 | if (vect_print_dump_info (REPORT_COST)) | |
809 | fprintf (vect_dump, "vect_model_load_cost: inside_cost = %d, " | |
810 | "outside_cost = %d .", inside_cost, outside_cost); | |
811 | ||
812 | /* Set the costs either in STMT_INFO or SLP_NODE (if exists). */ | |
813 | stmt_vinfo_set_inside_of_loop_cost (stmt_info, slp_node, inside_cost); | |
814 | stmt_vinfo_set_outside_of_loop_cost (stmt_info, slp_node, outside_cost); | |
815 | } | |
816 | ||
817 | ||
818 | /* Calculate cost of DR's memory access. */ | |
819 | void | |
820 | vect_get_load_cost (struct data_reference *dr, int ncopies, | |
821 | bool add_realign_cost, unsigned int *inside_cost, | |
822 | unsigned int *outside_cost) | |
823 | { | |
824 | int alignment_support_scheme = vect_supportable_dr_alignment (dr, false); | |
825 | ||
826 | switch (alignment_support_scheme) | |
ebfd146a IR |
827 | { |
828 | case dr_aligned: | |
829 | { | |
9940b13c | 830 | *inside_cost += ncopies * vect_get_stmt_cost (vector_load); |
ebfd146a IR |
831 | |
832 | if (vect_print_dump_info (REPORT_COST)) | |
833 | fprintf (vect_dump, "vect_model_load_cost: aligned."); | |
834 | ||
835 | break; | |
836 | } | |
837 | case dr_unaligned_supported: | |
838 | { | |
720f5239 IR |
839 | gimple stmt = DR_STMT (dr); |
840 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
841 | tree vectype = STMT_VINFO_VECTYPE (stmt_info); | |
ebfd146a | 842 | |
720f5239 IR |
843 | /* Here, we assign an additional cost for the unaligned load. */ |
844 | *inside_cost += ncopies | |
845 | * targetm.vectorize.builtin_vectorization_cost (unaligned_load, | |
846 | vectype, DR_MISALIGNMENT (dr)); | |
ebfd146a IR |
847 | if (vect_print_dump_info (REPORT_COST)) |
848 | fprintf (vect_dump, "vect_model_load_cost: unaligned supported by " | |
849 | "hardware."); | |
850 | ||
851 | break; | |
852 | } | |
853 | case dr_explicit_realign: | |
854 | { | |
720f5239 IR |
855 | *inside_cost += ncopies * (2 * vect_get_stmt_cost (vector_load) |
856 | + vect_get_stmt_cost (vector_stmt)); | |
ebfd146a IR |
857 | |
858 | /* FIXME: If the misalignment remains fixed across the iterations of | |
859 | the containing loop, the following cost should be added to the | |
860 | outside costs. */ | |
861 | if (targetm.vectorize.builtin_mask_for_load) | |
720f5239 | 862 | *inside_cost += vect_get_stmt_cost (vector_stmt); |
ebfd146a IR |
863 | |
864 | break; | |
865 | } | |
866 | case dr_explicit_realign_optimized: | |
867 | { | |
868 | if (vect_print_dump_info (REPORT_COST)) | |
869 | fprintf (vect_dump, "vect_model_load_cost: unaligned software " | |
870 | "pipelined."); | |
871 | ||
872 | /* Unaligned software pipeline has a load of an address, an initial | |
873 | load, and possibly a mask operation to "prime" the loop. However, | |
874 | if this is an access in a group of loads, which provide strided | |
875 | access, then the above cost should only be considered for one | |
876 | access in the group. Inside the loop, there is a load op | |
877 | and a realignment op. */ | |
878 | ||
720f5239 | 879 | if (add_realign_cost) |
ebfd146a | 880 | { |
720f5239 | 881 | *outside_cost = 2 * vect_get_stmt_cost (vector_stmt); |
ebfd146a | 882 | if (targetm.vectorize.builtin_mask_for_load) |
720f5239 | 883 | *outside_cost += vect_get_stmt_cost (vector_stmt); |
ebfd146a IR |
884 | } |
885 | ||
720f5239 IR |
886 | *inside_cost += ncopies * (vect_get_stmt_cost (vector_load) |
887 | + vect_get_stmt_cost (vector_stmt)); | |
ebfd146a IR |
888 | break; |
889 | } | |
890 | ||
891 | default: | |
892 | gcc_unreachable (); | |
893 | } | |
ebfd146a IR |
894 | } |
895 | ||
896 | ||
897 | /* Function vect_init_vector. | |
898 | ||
899 | Insert a new stmt (INIT_STMT) that initializes a new vector variable with | |
900 | the vector elements of VECTOR_VAR. Place the initialization at BSI if it | |
901 | is not NULL. Otherwise, place the initialization at the loop preheader. | |
b8698a0f | 902 | Return the DEF of INIT_STMT. |
ebfd146a IR |
903 | It will be used in the vectorization of STMT. */ |
904 | ||
905 | tree | |
906 | vect_init_vector (gimple stmt, tree vector_var, tree vector_type, | |
907 | gimple_stmt_iterator *gsi) | |
908 | { | |
909 | stmt_vec_info stmt_vinfo = vinfo_for_stmt (stmt); | |
910 | tree new_var; | |
911 | gimple init_stmt; | |
912 | tree vec_oprnd; | |
913 | edge pe; | |
914 | tree new_temp; | |
915 | basic_block new_bb; | |
b8698a0f | 916 | |
ebfd146a | 917 | new_var = vect_get_new_vect_var (vector_type, vect_simple_var, "cst_"); |
b8698a0f | 918 | add_referenced_var (new_var); |
ebfd146a IR |
919 | init_stmt = gimple_build_assign (new_var, vector_var); |
920 | new_temp = make_ssa_name (new_var, init_stmt); | |
921 | gimple_assign_set_lhs (init_stmt, new_temp); | |
922 | ||
923 | if (gsi) | |
924 | vect_finish_stmt_generation (stmt, init_stmt, gsi); | |
925 | else | |
926 | { | |
927 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_vinfo); | |
b8698a0f | 928 | |
a70d6342 IR |
929 | if (loop_vinfo) |
930 | { | |
931 | struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo); | |
932 | ||
933 | if (nested_in_vect_loop_p (loop, stmt)) | |
934 | loop = loop->inner; | |
b8698a0f | 935 | |
a70d6342 IR |
936 | pe = loop_preheader_edge (loop); |
937 | new_bb = gsi_insert_on_edge_immediate (pe, init_stmt); | |
938 | gcc_assert (!new_bb); | |
939 | } | |
940 | else | |
941 | { | |
942 | bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_vinfo); | |
943 | basic_block bb; | |
944 | gimple_stmt_iterator gsi_bb_start; | |
945 | ||
946 | gcc_assert (bb_vinfo); | |
947 | bb = BB_VINFO_BB (bb_vinfo); | |
12aaf609 | 948 | gsi_bb_start = gsi_after_labels (bb); |
a70d6342 IR |
949 | gsi_insert_before (&gsi_bb_start, init_stmt, GSI_SAME_STMT); |
950 | } | |
ebfd146a IR |
951 | } |
952 | ||
953 | if (vect_print_dump_info (REPORT_DETAILS)) | |
954 | { | |
955 | fprintf (vect_dump, "created new init_stmt: "); | |
956 | print_gimple_stmt (vect_dump, init_stmt, 0, TDF_SLIM); | |
957 | } | |
958 | ||
959 | vec_oprnd = gimple_assign_lhs (init_stmt); | |
960 | return vec_oprnd; | |
961 | } | |
962 | ||
a70d6342 | 963 | |
ebfd146a IR |
964 | /* Function vect_get_vec_def_for_operand. |
965 | ||
966 | OP is an operand in STMT. This function returns a (vector) def that will be | |
967 | used in the vectorized stmt for STMT. | |
968 | ||
969 | In the case that OP is an SSA_NAME which is defined in the loop, then | |
970 | STMT_VINFO_VEC_STMT of the defining stmt holds the relevant def. | |
971 | ||
972 | In case OP is an invariant or constant, a new stmt that creates a vector def | |
973 | needs to be introduced. */ | |
974 | ||
975 | tree | |
976 | vect_get_vec_def_for_operand (tree op, gimple stmt, tree *scalar_def) | |
977 | { | |
978 | tree vec_oprnd; | |
979 | gimple vec_stmt; | |
980 | gimple def_stmt; | |
981 | stmt_vec_info def_stmt_info = NULL; | |
982 | stmt_vec_info stmt_vinfo = vinfo_for_stmt (stmt); | |
983 | tree vectype = STMT_VINFO_VECTYPE (stmt_vinfo); | |
984 | unsigned int nunits = TYPE_VECTOR_SUBPARTS (vectype); | |
985 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_vinfo); | |
986 | tree vec_inv; | |
987 | tree vec_cst; | |
988 | tree t = NULL_TREE; | |
989 | tree def; | |
990 | int i; | |
991 | enum vect_def_type dt; | |
992 | bool is_simple_use; | |
993 | tree vector_type; | |
994 | ||
995 | if (vect_print_dump_info (REPORT_DETAILS)) | |
996 | { | |
997 | fprintf (vect_dump, "vect_get_vec_def_for_operand: "); | |
998 | print_generic_expr (vect_dump, op, TDF_SLIM); | |
999 | } | |
1000 | ||
b8698a0f | 1001 | is_simple_use = vect_is_simple_use (op, loop_vinfo, NULL, &def_stmt, &def, |
a70d6342 | 1002 | &dt); |
ebfd146a IR |
1003 | gcc_assert (is_simple_use); |
1004 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1005 | { | |
1006 | if (def) | |
1007 | { | |
1008 | fprintf (vect_dump, "def = "); | |
1009 | print_generic_expr (vect_dump, def, TDF_SLIM); | |
1010 | } | |
1011 | if (def_stmt) | |
1012 | { | |
1013 | fprintf (vect_dump, " def_stmt = "); | |
1014 | print_gimple_stmt (vect_dump, def_stmt, 0, TDF_SLIM); | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | switch (dt) | |
1019 | { | |
1020 | /* Case 1: operand is a constant. */ | |
1021 | case vect_constant_def: | |
1022 | { | |
7569a6cc RG |
1023 | vector_type = get_vectype_for_scalar_type (TREE_TYPE (op)); |
1024 | gcc_assert (vector_type); | |
1025 | ||
b8698a0f | 1026 | if (scalar_def) |
ebfd146a IR |
1027 | *scalar_def = op; |
1028 | ||
1029 | /* Create 'vect_cst_ = {cst,cst,...,cst}' */ | |
1030 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1031 | fprintf (vect_dump, "Create vector_cst. nunits = %d", nunits); | |
1032 | ||
1033 | for (i = nunits - 1; i >= 0; --i) | |
1034 | { | |
1035 | t = tree_cons (NULL_TREE, op, t); | |
1036 | } | |
7569a6cc RG |
1037 | vec_cst = build_vector (vector_type, t); |
1038 | return vect_init_vector (stmt, vec_cst, vector_type, NULL); | |
ebfd146a IR |
1039 | } |
1040 | ||
1041 | /* Case 2: operand is defined outside the loop - loop invariant. */ | |
8644a673 | 1042 | case vect_external_def: |
ebfd146a IR |
1043 | { |
1044 | vector_type = get_vectype_for_scalar_type (TREE_TYPE (def)); | |
1045 | gcc_assert (vector_type); | |
1046 | nunits = TYPE_VECTOR_SUBPARTS (vector_type); | |
1047 | ||
b8698a0f | 1048 | if (scalar_def) |
ebfd146a IR |
1049 | *scalar_def = def; |
1050 | ||
1051 | /* Create 'vec_inv = {inv,inv,..,inv}' */ | |
1052 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1053 | fprintf (vect_dump, "Create vector_inv."); | |
1054 | ||
1055 | for (i = nunits - 1; i >= 0; --i) | |
1056 | { | |
1057 | t = tree_cons (NULL_TREE, def, t); | |
1058 | } | |
1059 | ||
1060 | /* FIXME: use build_constructor directly. */ | |
1061 | vec_inv = build_constructor_from_list (vector_type, t); | |
1062 | return vect_init_vector (stmt, vec_inv, vector_type, NULL); | |
1063 | } | |
1064 | ||
1065 | /* Case 3: operand is defined inside the loop. */ | |
8644a673 | 1066 | case vect_internal_def: |
ebfd146a | 1067 | { |
b8698a0f | 1068 | if (scalar_def) |
ebfd146a IR |
1069 | *scalar_def = NULL/* FIXME tuples: def_stmt*/; |
1070 | ||
1071 | /* Get the def from the vectorized stmt. */ | |
1072 | def_stmt_info = vinfo_for_stmt (def_stmt); | |
1073 | vec_stmt = STMT_VINFO_VEC_STMT (def_stmt_info); | |
1074 | gcc_assert (vec_stmt); | |
1075 | if (gimple_code (vec_stmt) == GIMPLE_PHI) | |
1076 | vec_oprnd = PHI_RESULT (vec_stmt); | |
1077 | else if (is_gimple_call (vec_stmt)) | |
1078 | vec_oprnd = gimple_call_lhs (vec_stmt); | |
1079 | else | |
1080 | vec_oprnd = gimple_assign_lhs (vec_stmt); | |
1081 | return vec_oprnd; | |
1082 | } | |
1083 | ||
1084 | /* Case 4: operand is defined by a loop header phi - reduction */ | |
1085 | case vect_reduction_def: | |
06066f92 | 1086 | case vect_double_reduction_def: |
7c5222ff | 1087 | case vect_nested_cycle: |
ebfd146a IR |
1088 | { |
1089 | struct loop *loop; | |
1090 | ||
1091 | gcc_assert (gimple_code (def_stmt) == GIMPLE_PHI); | |
b8698a0f | 1092 | loop = (gimple_bb (def_stmt))->loop_father; |
ebfd146a IR |
1093 | |
1094 | /* Get the def before the loop */ | |
1095 | op = PHI_ARG_DEF_FROM_EDGE (def_stmt, loop_preheader_edge (loop)); | |
1096 | return get_initial_def_for_reduction (stmt, op, scalar_def); | |
1097 | } | |
1098 | ||
1099 | /* Case 5: operand is defined by loop-header phi - induction. */ | |
1100 | case vect_induction_def: | |
1101 | { | |
1102 | gcc_assert (gimple_code (def_stmt) == GIMPLE_PHI); | |
1103 | ||
1104 | /* Get the def from the vectorized stmt. */ | |
1105 | def_stmt_info = vinfo_for_stmt (def_stmt); | |
1106 | vec_stmt = STMT_VINFO_VEC_STMT (def_stmt_info); | |
1107 | gcc_assert (vec_stmt && gimple_code (vec_stmt) == GIMPLE_PHI); | |
1108 | vec_oprnd = PHI_RESULT (vec_stmt); | |
1109 | return vec_oprnd; | |
1110 | } | |
1111 | ||
1112 | default: | |
1113 | gcc_unreachable (); | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | ||
1118 | /* Function vect_get_vec_def_for_stmt_copy | |
1119 | ||
b8698a0f L |
1120 | Return a vector-def for an operand. This function is used when the |
1121 | vectorized stmt to be created (by the caller to this function) is a "copy" | |
1122 | created in case the vectorized result cannot fit in one vector, and several | |
1123 | copies of the vector-stmt are required. In this case the vector-def is | |
ebfd146a | 1124 | retrieved from the vector stmt recorded in the STMT_VINFO_RELATED_STMT field |
b8698a0f | 1125 | of the stmt that defines VEC_OPRND. |
ebfd146a IR |
1126 | DT is the type of the vector def VEC_OPRND. |
1127 | ||
1128 | Context: | |
1129 | In case the vectorization factor (VF) is bigger than the number | |
1130 | of elements that can fit in a vectype (nunits), we have to generate | |
1131 | more than one vector stmt to vectorize the scalar stmt. This situation | |
b8698a0f | 1132 | arises when there are multiple data-types operated upon in the loop; the |
ebfd146a IR |
1133 | smallest data-type determines the VF, and as a result, when vectorizing |
1134 | stmts operating on wider types we need to create 'VF/nunits' "copies" of the | |
1135 | vector stmt (each computing a vector of 'nunits' results, and together | |
b8698a0f | 1136 | computing 'VF' results in each iteration). This function is called when |
ebfd146a IR |
1137 | vectorizing such a stmt (e.g. vectorizing S2 in the illustration below, in |
1138 | which VF=16 and nunits=4, so the number of copies required is 4): | |
1139 | ||
1140 | scalar stmt: vectorized into: STMT_VINFO_RELATED_STMT | |
b8698a0f | 1141 | |
ebfd146a IR |
1142 | S1: x = load VS1.0: vx.0 = memref0 VS1.1 |
1143 | VS1.1: vx.1 = memref1 VS1.2 | |
1144 | VS1.2: vx.2 = memref2 VS1.3 | |
b8698a0f | 1145 | VS1.3: vx.3 = memref3 |
ebfd146a IR |
1146 | |
1147 | S2: z = x + ... VSnew.0: vz0 = vx.0 + ... VSnew.1 | |
1148 | VSnew.1: vz1 = vx.1 + ... VSnew.2 | |
1149 | VSnew.2: vz2 = vx.2 + ... VSnew.3 | |
1150 | VSnew.3: vz3 = vx.3 + ... | |
1151 | ||
1152 | The vectorization of S1 is explained in vectorizable_load. | |
1153 | The vectorization of S2: | |
b8698a0f L |
1154 | To create the first vector-stmt out of the 4 copies - VSnew.0 - |
1155 | the function 'vect_get_vec_def_for_operand' is called to | |
ebfd146a IR |
1156 | get the relevant vector-def for each operand of S2. For operand x it |
1157 | returns the vector-def 'vx.0'. | |
1158 | ||
b8698a0f L |
1159 | To create the remaining copies of the vector-stmt (VSnew.j), this |
1160 | function is called to get the relevant vector-def for each operand. It is | |
1161 | obtained from the respective VS1.j stmt, which is recorded in the | |
ebfd146a IR |
1162 | STMT_VINFO_RELATED_STMT field of the stmt that defines VEC_OPRND. |
1163 | ||
b8698a0f L |
1164 | For example, to obtain the vector-def 'vx.1' in order to create the |
1165 | vector stmt 'VSnew.1', this function is called with VEC_OPRND='vx.0'. | |
1166 | Given 'vx0' we obtain the stmt that defines it ('VS1.0'); from the | |
ebfd146a IR |
1167 | STMT_VINFO_RELATED_STMT field of 'VS1.0' we obtain the next copy - 'VS1.1', |
1168 | and return its def ('vx.1'). | |
1169 | Overall, to create the above sequence this function will be called 3 times: | |
1170 | vx.1 = vect_get_vec_def_for_stmt_copy (dt, vx.0); | |
1171 | vx.2 = vect_get_vec_def_for_stmt_copy (dt, vx.1); | |
1172 | vx.3 = vect_get_vec_def_for_stmt_copy (dt, vx.2); */ | |
1173 | ||
1174 | tree | |
1175 | vect_get_vec_def_for_stmt_copy (enum vect_def_type dt, tree vec_oprnd) | |
1176 | { | |
1177 | gimple vec_stmt_for_operand; | |
1178 | stmt_vec_info def_stmt_info; | |
1179 | ||
1180 | /* Do nothing; can reuse same def. */ | |
8644a673 | 1181 | if (dt == vect_external_def || dt == vect_constant_def ) |
ebfd146a IR |
1182 | return vec_oprnd; |
1183 | ||
1184 | vec_stmt_for_operand = SSA_NAME_DEF_STMT (vec_oprnd); | |
1185 | def_stmt_info = vinfo_for_stmt (vec_stmt_for_operand); | |
1186 | gcc_assert (def_stmt_info); | |
1187 | vec_stmt_for_operand = STMT_VINFO_RELATED_STMT (def_stmt_info); | |
1188 | gcc_assert (vec_stmt_for_operand); | |
1189 | vec_oprnd = gimple_get_lhs (vec_stmt_for_operand); | |
1190 | if (gimple_code (vec_stmt_for_operand) == GIMPLE_PHI) | |
1191 | vec_oprnd = PHI_RESULT (vec_stmt_for_operand); | |
1192 | else | |
1193 | vec_oprnd = gimple_get_lhs (vec_stmt_for_operand); | |
1194 | return vec_oprnd; | |
1195 | } | |
1196 | ||
1197 | ||
1198 | /* Get vectorized definitions for the operands to create a copy of an original | |
1199 | stmt. See vect_get_vec_def_for_stmt_copy() for details. */ | |
1200 | ||
1201 | static void | |
b8698a0f L |
1202 | vect_get_vec_defs_for_stmt_copy (enum vect_def_type *dt, |
1203 | VEC(tree,heap) **vec_oprnds0, | |
ebfd146a IR |
1204 | VEC(tree,heap) **vec_oprnds1) |
1205 | { | |
1206 | tree vec_oprnd = VEC_pop (tree, *vec_oprnds0); | |
1207 | ||
1208 | vec_oprnd = vect_get_vec_def_for_stmt_copy (dt[0], vec_oprnd); | |
1209 | VEC_quick_push (tree, *vec_oprnds0, vec_oprnd); | |
1210 | ||
1211 | if (vec_oprnds1 && *vec_oprnds1) | |
1212 | { | |
1213 | vec_oprnd = VEC_pop (tree, *vec_oprnds1); | |
1214 | vec_oprnd = vect_get_vec_def_for_stmt_copy (dt[1], vec_oprnd); | |
1215 | VEC_quick_push (tree, *vec_oprnds1, vec_oprnd); | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | ||
1220 | /* Get vectorized definitions for OP0 and OP1, or SLP_NODE if it is not NULL. */ | |
1221 | ||
1222 | static void | |
1223 | vect_get_vec_defs (tree op0, tree op1, gimple stmt, | |
1224 | VEC(tree,heap) **vec_oprnds0, VEC(tree,heap) **vec_oprnds1, | |
1225 | slp_tree slp_node) | |
1226 | { | |
1227 | if (slp_node) | |
b5aeb3bb | 1228 | vect_get_slp_defs (slp_node, vec_oprnds0, vec_oprnds1, -1); |
ebfd146a IR |
1229 | else |
1230 | { | |
1231 | tree vec_oprnd; | |
1232 | ||
b8698a0f L |
1233 | *vec_oprnds0 = VEC_alloc (tree, heap, 1); |
1234 | vec_oprnd = vect_get_vec_def_for_operand (op0, stmt, NULL); | |
ebfd146a IR |
1235 | VEC_quick_push (tree, *vec_oprnds0, vec_oprnd); |
1236 | ||
1237 | if (op1) | |
1238 | { | |
b8698a0f L |
1239 | *vec_oprnds1 = VEC_alloc (tree, heap, 1); |
1240 | vec_oprnd = vect_get_vec_def_for_operand (op1, stmt, NULL); | |
ebfd146a IR |
1241 | VEC_quick_push (tree, *vec_oprnds1, vec_oprnd); |
1242 | } | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | ||
1247 | /* Function vect_finish_stmt_generation. | |
1248 | ||
1249 | Insert a new stmt. */ | |
1250 | ||
1251 | void | |
1252 | vect_finish_stmt_generation (gimple stmt, gimple vec_stmt, | |
1253 | gimple_stmt_iterator *gsi) | |
1254 | { | |
1255 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
1256 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); | |
a70d6342 | 1257 | bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_info); |
ebfd146a IR |
1258 | |
1259 | gcc_assert (gimple_code (stmt) != GIMPLE_LABEL); | |
1260 | ||
1261 | gsi_insert_before (gsi, vec_stmt, GSI_SAME_STMT); | |
1262 | ||
b8698a0f | 1263 | set_vinfo_for_stmt (vec_stmt, new_stmt_vec_info (vec_stmt, loop_vinfo, |
a70d6342 | 1264 | bb_vinfo)); |
ebfd146a IR |
1265 | |
1266 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1267 | { | |
1268 | fprintf (vect_dump, "add new stmt: "); | |
1269 | print_gimple_stmt (vect_dump, vec_stmt, 0, TDF_SLIM); | |
1270 | } | |
1271 | ||
1272 | gimple_set_location (vec_stmt, gimple_location (gsi_stmt (*gsi))); | |
1273 | } | |
1274 | ||
1275 | /* Checks if CALL can be vectorized in type VECTYPE. Returns | |
1276 | a function declaration if the target has a vectorized version | |
1277 | of the function, or NULL_TREE if the function cannot be vectorized. */ | |
1278 | ||
1279 | tree | |
1280 | vectorizable_function (gimple call, tree vectype_out, tree vectype_in) | |
1281 | { | |
1282 | tree fndecl = gimple_call_fndecl (call); | |
ebfd146a IR |
1283 | |
1284 | /* We only handle functions that do not read or clobber memory -- i.e. | |
1285 | const or novops ones. */ | |
1286 | if (!(gimple_call_flags (call) & (ECF_CONST | ECF_NOVOPS))) | |
1287 | return NULL_TREE; | |
1288 | ||
1289 | if (!fndecl | |
1290 | || TREE_CODE (fndecl) != FUNCTION_DECL | |
1291 | || !DECL_BUILT_IN (fndecl)) | |
1292 | return NULL_TREE; | |
1293 | ||
62f7fd21 | 1294 | return targetm.vectorize.builtin_vectorized_function (fndecl, vectype_out, |
ebfd146a IR |
1295 | vectype_in); |
1296 | } | |
1297 | ||
1298 | /* Function vectorizable_call. | |
1299 | ||
b8698a0f L |
1300 | Check if STMT performs a function call that can be vectorized. |
1301 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
ebfd146a IR |
1302 | stmt to replace it, put it in VEC_STMT, and insert it at BSI. |
1303 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
1304 | ||
1305 | static bool | |
1306 | vectorizable_call (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt) | |
1307 | { | |
1308 | tree vec_dest; | |
1309 | tree scalar_dest; | |
1310 | tree op, type; | |
1311 | tree vec_oprnd0 = NULL_TREE, vec_oprnd1 = NULL_TREE; | |
1312 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt), prev_stmt_info; | |
1313 | tree vectype_out, vectype_in; | |
1314 | int nunits_in; | |
1315 | int nunits_out; | |
1316 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); | |
b690cc0f | 1317 | tree fndecl, new_temp, def, rhs_type; |
ebfd146a IR |
1318 | gimple def_stmt; |
1319 | enum vect_def_type dt[2] = {vect_unknown_def_type, vect_unknown_def_type}; | |
63827fb8 | 1320 | gimple new_stmt = NULL; |
ebfd146a IR |
1321 | int ncopies, j; |
1322 | VEC(tree, heap) *vargs = NULL; | |
1323 | enum { NARROW, NONE, WIDEN } modifier; | |
1324 | size_t i, nargs; | |
1325 | ||
a70d6342 IR |
1326 | /* FORNOW: unsupported in basic block SLP. */ |
1327 | gcc_assert (loop_vinfo); | |
b8698a0f | 1328 | |
ebfd146a IR |
1329 | if (!STMT_VINFO_RELEVANT_P (stmt_info)) |
1330 | return false; | |
1331 | ||
8644a673 | 1332 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def) |
ebfd146a IR |
1333 | return false; |
1334 | ||
1335 | /* FORNOW: SLP not supported. */ | |
1336 | if (STMT_SLP_TYPE (stmt_info)) | |
1337 | return false; | |
1338 | ||
1339 | /* Is STMT a vectorizable call? */ | |
1340 | if (!is_gimple_call (stmt)) | |
1341 | return false; | |
1342 | ||
1343 | if (TREE_CODE (gimple_call_lhs (stmt)) != SSA_NAME) | |
1344 | return false; | |
1345 | ||
b690cc0f RG |
1346 | vectype_out = STMT_VINFO_VECTYPE (stmt_info); |
1347 | ||
ebfd146a IR |
1348 | /* Process function arguments. */ |
1349 | rhs_type = NULL_TREE; | |
b690cc0f | 1350 | vectype_in = NULL_TREE; |
ebfd146a IR |
1351 | nargs = gimple_call_num_args (stmt); |
1352 | ||
1353 | /* Bail out if the function has more than two arguments, we | |
1354 | do not have interesting builtin functions to vectorize with | |
1355 | more than two arguments. No arguments is also not good. */ | |
1356 | if (nargs == 0 || nargs > 2) | |
1357 | return false; | |
1358 | ||
1359 | for (i = 0; i < nargs; i++) | |
1360 | { | |
b690cc0f RG |
1361 | tree opvectype; |
1362 | ||
ebfd146a IR |
1363 | op = gimple_call_arg (stmt, i); |
1364 | ||
1365 | /* We can only handle calls with arguments of the same type. */ | |
1366 | if (rhs_type | |
8533c9d8 | 1367 | && !types_compatible_p (rhs_type, TREE_TYPE (op))) |
ebfd146a IR |
1368 | { |
1369 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1370 | fprintf (vect_dump, "argument types differ."); | |
1371 | return false; | |
1372 | } | |
b690cc0f RG |
1373 | if (!rhs_type) |
1374 | rhs_type = TREE_TYPE (op); | |
ebfd146a | 1375 | |
b690cc0f RG |
1376 | if (!vect_is_simple_use_1 (op, loop_vinfo, NULL, |
1377 | &def_stmt, &def, &dt[i], &opvectype)) | |
ebfd146a IR |
1378 | { |
1379 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1380 | fprintf (vect_dump, "use not simple."); | |
1381 | return false; | |
1382 | } | |
ebfd146a | 1383 | |
b690cc0f RG |
1384 | if (!vectype_in) |
1385 | vectype_in = opvectype; | |
1386 | else if (opvectype | |
1387 | && opvectype != vectype_in) | |
1388 | { | |
1389 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1390 | fprintf (vect_dump, "argument vector types differ."); | |
1391 | return false; | |
1392 | } | |
1393 | } | |
1394 | /* If all arguments are external or constant defs use a vector type with | |
1395 | the same size as the output vector type. */ | |
ebfd146a | 1396 | if (!vectype_in) |
b690cc0f | 1397 | vectype_in = get_same_sized_vectype (rhs_type, vectype_out); |
7d8930a0 IR |
1398 | if (vec_stmt) |
1399 | gcc_assert (vectype_in); | |
1400 | if (!vectype_in) | |
1401 | { | |
1402 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1403 | { | |
1404 | fprintf (vect_dump, "no vectype for scalar type "); | |
1405 | print_generic_expr (vect_dump, rhs_type, TDF_SLIM); | |
1406 | } | |
1407 | ||
1408 | return false; | |
1409 | } | |
ebfd146a IR |
1410 | |
1411 | /* FORNOW */ | |
b690cc0f RG |
1412 | nunits_in = TYPE_VECTOR_SUBPARTS (vectype_in); |
1413 | nunits_out = TYPE_VECTOR_SUBPARTS (vectype_out); | |
ebfd146a IR |
1414 | if (nunits_in == nunits_out / 2) |
1415 | modifier = NARROW; | |
1416 | else if (nunits_out == nunits_in) | |
1417 | modifier = NONE; | |
1418 | else if (nunits_out == nunits_in / 2) | |
1419 | modifier = WIDEN; | |
1420 | else | |
1421 | return false; | |
1422 | ||
1423 | /* For now, we only vectorize functions if a target specific builtin | |
1424 | is available. TODO -- in some cases, it might be profitable to | |
1425 | insert the calls for pieces of the vector, in order to be able | |
1426 | to vectorize other operations in the loop. */ | |
1427 | fndecl = vectorizable_function (stmt, vectype_out, vectype_in); | |
1428 | if (fndecl == NULL_TREE) | |
1429 | { | |
1430 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1431 | fprintf (vect_dump, "function is not vectorizable."); | |
1432 | ||
1433 | return false; | |
1434 | } | |
1435 | ||
5006671f | 1436 | gcc_assert (!gimple_vuse (stmt)); |
ebfd146a IR |
1437 | |
1438 | if (modifier == NARROW) | |
1439 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits_out; | |
1440 | else | |
1441 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits_in; | |
1442 | ||
1443 | /* Sanity check: make sure that at least one copy of the vectorized stmt | |
1444 | needs to be generated. */ | |
1445 | gcc_assert (ncopies >= 1); | |
1446 | ||
1447 | if (!vec_stmt) /* transformation not required. */ | |
1448 | { | |
1449 | STMT_VINFO_TYPE (stmt_info) = call_vec_info_type; | |
1450 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1451 | fprintf (vect_dump, "=== vectorizable_call ==="); | |
1452 | vect_model_simple_cost (stmt_info, ncopies, dt, NULL); | |
1453 | return true; | |
1454 | } | |
1455 | ||
1456 | /** Transform. **/ | |
1457 | ||
1458 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1459 | fprintf (vect_dump, "transform operation."); | |
1460 | ||
1461 | /* Handle def. */ | |
1462 | scalar_dest = gimple_call_lhs (stmt); | |
1463 | vec_dest = vect_create_destination_var (scalar_dest, vectype_out); | |
1464 | ||
1465 | prev_stmt_info = NULL; | |
1466 | switch (modifier) | |
1467 | { | |
1468 | case NONE: | |
1469 | for (j = 0; j < ncopies; ++j) | |
1470 | { | |
1471 | /* Build argument list for the vectorized call. */ | |
1472 | if (j == 0) | |
1473 | vargs = VEC_alloc (tree, heap, nargs); | |
1474 | else | |
1475 | VEC_truncate (tree, vargs, 0); | |
1476 | ||
1477 | for (i = 0; i < nargs; i++) | |
1478 | { | |
1479 | op = gimple_call_arg (stmt, i); | |
1480 | if (j == 0) | |
1481 | vec_oprnd0 | |
1482 | = vect_get_vec_def_for_operand (op, stmt, NULL); | |
1483 | else | |
63827fb8 IR |
1484 | { |
1485 | vec_oprnd0 = gimple_call_arg (new_stmt, i); | |
1486 | vec_oprnd0 | |
1487 | = vect_get_vec_def_for_stmt_copy (dt[i], vec_oprnd0); | |
1488 | } | |
ebfd146a IR |
1489 | |
1490 | VEC_quick_push (tree, vargs, vec_oprnd0); | |
1491 | } | |
1492 | ||
1493 | new_stmt = gimple_build_call_vec (fndecl, vargs); | |
1494 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
1495 | gimple_call_set_lhs (new_stmt, new_temp); | |
1496 | ||
1497 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
7411b8f0 | 1498 | mark_symbols_for_renaming (new_stmt); |
ebfd146a IR |
1499 | |
1500 | if (j == 0) | |
1501 | STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt; | |
1502 | else | |
1503 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
1504 | ||
1505 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
1506 | } | |
1507 | ||
1508 | break; | |
1509 | ||
1510 | case NARROW: | |
1511 | for (j = 0; j < ncopies; ++j) | |
1512 | { | |
1513 | /* Build argument list for the vectorized call. */ | |
1514 | if (j == 0) | |
1515 | vargs = VEC_alloc (tree, heap, nargs * 2); | |
1516 | else | |
1517 | VEC_truncate (tree, vargs, 0); | |
1518 | ||
1519 | for (i = 0; i < nargs; i++) | |
1520 | { | |
1521 | op = gimple_call_arg (stmt, i); | |
1522 | if (j == 0) | |
1523 | { | |
1524 | vec_oprnd0 | |
1525 | = vect_get_vec_def_for_operand (op, stmt, NULL); | |
1526 | vec_oprnd1 | |
63827fb8 | 1527 | = vect_get_vec_def_for_stmt_copy (dt[i], vec_oprnd0); |
ebfd146a IR |
1528 | } |
1529 | else | |
1530 | { | |
63827fb8 | 1531 | vec_oprnd1 = gimple_call_arg (new_stmt, 2*i); |
ebfd146a | 1532 | vec_oprnd0 |
63827fb8 | 1533 | = vect_get_vec_def_for_stmt_copy (dt[i], vec_oprnd1); |
ebfd146a | 1534 | vec_oprnd1 |
63827fb8 | 1535 | = vect_get_vec_def_for_stmt_copy (dt[i], vec_oprnd0); |
ebfd146a IR |
1536 | } |
1537 | ||
1538 | VEC_quick_push (tree, vargs, vec_oprnd0); | |
1539 | VEC_quick_push (tree, vargs, vec_oprnd1); | |
1540 | } | |
1541 | ||
1542 | new_stmt = gimple_build_call_vec (fndecl, vargs); | |
1543 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
1544 | gimple_call_set_lhs (new_stmt, new_temp); | |
1545 | ||
1546 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
7411b8f0 | 1547 | mark_symbols_for_renaming (new_stmt); |
ebfd146a IR |
1548 | |
1549 | if (j == 0) | |
1550 | STMT_VINFO_VEC_STMT (stmt_info) = new_stmt; | |
1551 | else | |
1552 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
1553 | ||
1554 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
1555 | } | |
1556 | ||
1557 | *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info); | |
1558 | ||
1559 | break; | |
1560 | ||
1561 | case WIDEN: | |
1562 | /* No current target implements this case. */ | |
1563 | return false; | |
1564 | } | |
1565 | ||
1566 | VEC_free (tree, heap, vargs); | |
1567 | ||
1568 | /* Update the exception handling table with the vector stmt if necessary. */ | |
1569 | if (maybe_clean_or_replace_eh_stmt (stmt, *vec_stmt)) | |
1570 | gimple_purge_dead_eh_edges (gimple_bb (stmt)); | |
1571 | ||
1572 | /* The call in STMT might prevent it from being removed in dce. | |
1573 | We however cannot remove it here, due to the way the ssa name | |
1574 | it defines is mapped to the new definition. So just replace | |
1575 | rhs of the statement with something harmless. */ | |
1576 | ||
1577 | type = TREE_TYPE (scalar_dest); | |
1578 | new_stmt = gimple_build_assign (gimple_call_lhs (stmt), | |
1579 | fold_convert (type, integer_zero_node)); | |
1580 | set_vinfo_for_stmt (new_stmt, stmt_info); | |
1581 | set_vinfo_for_stmt (stmt, NULL); | |
1582 | STMT_VINFO_STMT (stmt_info) = new_stmt; | |
1583 | gsi_replace (gsi, new_stmt, false); | |
1584 | SSA_NAME_DEF_STMT (gimple_assign_lhs (new_stmt)) = new_stmt; | |
1585 | ||
1586 | return true; | |
1587 | } | |
1588 | ||
1589 | ||
1590 | /* Function vect_gen_widened_results_half | |
1591 | ||
1592 | Create a vector stmt whose code, type, number of arguments, and result | |
b8698a0f | 1593 | variable are CODE, OP_TYPE, and VEC_DEST, and its arguments are |
ebfd146a IR |
1594 | VEC_OPRND0 and VEC_OPRND1. The new vector stmt is to be inserted at BSI. |
1595 | In the case that CODE is a CALL_EXPR, this means that a call to DECL | |
1596 | needs to be created (DECL is a function-decl of a target-builtin). | |
1597 | STMT is the original scalar stmt that we are vectorizing. */ | |
1598 | ||
1599 | static gimple | |
1600 | vect_gen_widened_results_half (enum tree_code code, | |
1601 | tree decl, | |
1602 | tree vec_oprnd0, tree vec_oprnd1, int op_type, | |
1603 | tree vec_dest, gimple_stmt_iterator *gsi, | |
1604 | gimple stmt) | |
b8698a0f | 1605 | { |
ebfd146a | 1606 | gimple new_stmt; |
b8698a0f L |
1607 | tree new_temp; |
1608 | ||
1609 | /* Generate half of the widened result: */ | |
1610 | if (code == CALL_EXPR) | |
1611 | { | |
1612 | /* Target specific support */ | |
ebfd146a IR |
1613 | if (op_type == binary_op) |
1614 | new_stmt = gimple_build_call (decl, 2, vec_oprnd0, vec_oprnd1); | |
1615 | else | |
1616 | new_stmt = gimple_build_call (decl, 1, vec_oprnd0); | |
1617 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
1618 | gimple_call_set_lhs (new_stmt, new_temp); | |
b8698a0f L |
1619 | } |
1620 | else | |
ebfd146a | 1621 | { |
b8698a0f L |
1622 | /* Generic support */ |
1623 | gcc_assert (op_type == TREE_CODE_LENGTH (code)); | |
ebfd146a IR |
1624 | if (op_type != binary_op) |
1625 | vec_oprnd1 = NULL; | |
1626 | new_stmt = gimple_build_assign_with_ops (code, vec_dest, vec_oprnd0, | |
1627 | vec_oprnd1); | |
1628 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
1629 | gimple_assign_set_lhs (new_stmt, new_temp); | |
b8698a0f | 1630 | } |
ebfd146a IR |
1631 | vect_finish_stmt_generation (stmt, new_stmt, gsi); |
1632 | ||
ebfd146a IR |
1633 | return new_stmt; |
1634 | } | |
1635 | ||
1636 | ||
b8698a0f L |
1637 | /* Check if STMT performs a conversion operation, that can be vectorized. |
1638 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
ebfd146a IR |
1639 | stmt to replace it, put it in VEC_STMT, and insert it at BSI. |
1640 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
1641 | ||
1642 | static bool | |
1643 | vectorizable_conversion (gimple stmt, gimple_stmt_iterator *gsi, | |
1644 | gimple *vec_stmt, slp_tree slp_node) | |
1645 | { | |
1646 | tree vec_dest; | |
1647 | tree scalar_dest; | |
1648 | tree op0; | |
1649 | tree vec_oprnd0 = NULL_TREE, vec_oprnd1 = NULL_TREE; | |
1650 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
1651 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); | |
1652 | enum tree_code code, code1 = ERROR_MARK, code2 = ERROR_MARK; | |
1653 | tree decl1 = NULL_TREE, decl2 = NULL_TREE; | |
1654 | tree new_temp; | |
1655 | tree def; | |
1656 | gimple def_stmt; | |
1657 | enum vect_def_type dt[2] = {vect_unknown_def_type, vect_unknown_def_type}; | |
1658 | gimple new_stmt = NULL; | |
1659 | stmt_vec_info prev_stmt_info; | |
1660 | int nunits_in; | |
1661 | int nunits_out; | |
1662 | tree vectype_out, vectype_in; | |
1663 | int ncopies, j; | |
b690cc0f | 1664 | tree rhs_type; |
ebfd146a IR |
1665 | tree builtin_decl; |
1666 | enum { NARROW, NONE, WIDEN } modifier; | |
1667 | int i; | |
1668 | VEC(tree,heap) *vec_oprnds0 = NULL; | |
1669 | tree vop0; | |
ebfd146a IR |
1670 | VEC(tree,heap) *dummy = NULL; |
1671 | int dummy_int; | |
1672 | ||
1673 | /* Is STMT a vectorizable conversion? */ | |
1674 | ||
a70d6342 IR |
1675 | /* FORNOW: unsupported in basic block SLP. */ |
1676 | gcc_assert (loop_vinfo); | |
b8698a0f | 1677 | |
ebfd146a IR |
1678 | if (!STMT_VINFO_RELEVANT_P (stmt_info)) |
1679 | return false; | |
1680 | ||
8644a673 | 1681 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def) |
ebfd146a IR |
1682 | return false; |
1683 | ||
1684 | if (!is_gimple_assign (stmt)) | |
1685 | return false; | |
1686 | ||
1687 | if (TREE_CODE (gimple_assign_lhs (stmt)) != SSA_NAME) | |
1688 | return false; | |
1689 | ||
1690 | code = gimple_assign_rhs_code (stmt); | |
1691 | if (code != FIX_TRUNC_EXPR && code != FLOAT_EXPR) | |
1692 | return false; | |
1693 | ||
1694 | /* Check types of lhs and rhs. */ | |
b690cc0f RG |
1695 | scalar_dest = gimple_assign_lhs (stmt); |
1696 | vectype_out = STMT_VINFO_VECTYPE (stmt_info); | |
1697 | ||
ebfd146a IR |
1698 | op0 = gimple_assign_rhs1 (stmt); |
1699 | rhs_type = TREE_TYPE (op0); | |
b690cc0f RG |
1700 | /* Check the operands of the operation. */ |
1701 | if (!vect_is_simple_use_1 (op0, loop_vinfo, NULL, | |
1702 | &def_stmt, &def, &dt[0], &vectype_in)) | |
1703 | { | |
1704 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1705 | fprintf (vect_dump, "use not simple."); | |
1706 | return false; | |
1707 | } | |
1708 | /* If op0 is an external or constant defs use a vector type of | |
1709 | the same size as the output vector type. */ | |
ebfd146a | 1710 | if (!vectype_in) |
b690cc0f | 1711 | vectype_in = get_same_sized_vectype (rhs_type, vectype_out); |
7d8930a0 IR |
1712 | if (vec_stmt) |
1713 | gcc_assert (vectype_in); | |
1714 | if (!vectype_in) | |
1715 | { | |
1716 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1717 | { | |
1718 | fprintf (vect_dump, "no vectype for scalar type "); | |
1719 | print_generic_expr (vect_dump, rhs_type, TDF_SLIM); | |
1720 | } | |
1721 | ||
1722 | return false; | |
1723 | } | |
ebfd146a IR |
1724 | |
1725 | /* FORNOW */ | |
b690cc0f RG |
1726 | nunits_in = TYPE_VECTOR_SUBPARTS (vectype_in); |
1727 | nunits_out = TYPE_VECTOR_SUBPARTS (vectype_out); | |
ebfd146a IR |
1728 | if (nunits_in == nunits_out / 2) |
1729 | modifier = NARROW; | |
1730 | else if (nunits_out == nunits_in) | |
1731 | modifier = NONE; | |
1732 | else if (nunits_out == nunits_in / 2) | |
1733 | modifier = WIDEN; | |
1734 | else | |
1735 | return false; | |
1736 | ||
ebfd146a IR |
1737 | if (modifier == NARROW) |
1738 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits_out; | |
1739 | else | |
1740 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits_in; | |
1741 | ||
1742 | /* FORNOW: SLP with multiple types is not supported. The SLP analysis verifies | |
1743 | this, so we can safely override NCOPIES with 1 here. */ | |
1744 | if (slp_node) | |
1745 | ncopies = 1; | |
b8698a0f | 1746 | |
ebfd146a IR |
1747 | /* Sanity check: make sure that at least one copy of the vectorized stmt |
1748 | needs to be generated. */ | |
1749 | gcc_assert (ncopies >= 1); | |
1750 | ||
ebfd146a IR |
1751 | /* Supportable by target? */ |
1752 | if ((modifier == NONE | |
88dd7150 | 1753 | && !targetm.vectorize.builtin_conversion (code, vectype_out, vectype_in)) |
ebfd146a | 1754 | || (modifier == WIDEN |
b690cc0f RG |
1755 | && !supportable_widening_operation (code, stmt, |
1756 | vectype_out, vectype_in, | |
ebfd146a IR |
1757 | &decl1, &decl2, |
1758 | &code1, &code2, | |
1759 | &dummy_int, &dummy)) | |
1760 | || (modifier == NARROW | |
b690cc0f | 1761 | && !supportable_narrowing_operation (code, vectype_out, vectype_in, |
ebfd146a IR |
1762 | &code1, &dummy_int, &dummy))) |
1763 | { | |
1764 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1765 | fprintf (vect_dump, "conversion not supported by target."); | |
1766 | return false; | |
1767 | } | |
1768 | ||
1769 | if (modifier != NONE) | |
1770 | { | |
ebfd146a IR |
1771 | /* FORNOW: SLP not supported. */ |
1772 | if (STMT_SLP_TYPE (stmt_info)) | |
b8698a0f | 1773 | return false; |
ebfd146a IR |
1774 | } |
1775 | ||
1776 | if (!vec_stmt) /* transformation not required. */ | |
1777 | { | |
1778 | STMT_VINFO_TYPE (stmt_info) = type_conversion_vec_info_type; | |
1779 | return true; | |
1780 | } | |
1781 | ||
1782 | /** Transform. **/ | |
1783 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1784 | fprintf (vect_dump, "transform conversion."); | |
1785 | ||
1786 | /* Handle def. */ | |
1787 | vec_dest = vect_create_destination_var (scalar_dest, vectype_out); | |
1788 | ||
1789 | if (modifier == NONE && !slp_node) | |
1790 | vec_oprnds0 = VEC_alloc (tree, heap, 1); | |
1791 | ||
1792 | prev_stmt_info = NULL; | |
1793 | switch (modifier) | |
1794 | { | |
1795 | case NONE: | |
1796 | for (j = 0; j < ncopies; j++) | |
1797 | { | |
ebfd146a | 1798 | if (j == 0) |
b8698a0f | 1799 | vect_get_vec_defs (op0, NULL, stmt, &vec_oprnds0, NULL, slp_node); |
ebfd146a IR |
1800 | else |
1801 | vect_get_vec_defs_for_stmt_copy (dt, &vec_oprnds0, NULL); | |
1802 | ||
1803 | builtin_decl = | |
88dd7150 RG |
1804 | targetm.vectorize.builtin_conversion (code, |
1805 | vectype_out, vectype_in); | |
ac47786e | 1806 | FOR_EACH_VEC_ELT (tree, vec_oprnds0, i, vop0) |
b8698a0f | 1807 | { |
ebfd146a IR |
1808 | /* Arguments are ready. create the new vector stmt. */ |
1809 | new_stmt = gimple_build_call (builtin_decl, 1, vop0); | |
1810 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
1811 | gimple_call_set_lhs (new_stmt, new_temp); | |
1812 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
ebfd146a IR |
1813 | if (slp_node) |
1814 | VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt); | |
1815 | } | |
1816 | ||
1817 | if (j == 0) | |
1818 | STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt; | |
1819 | else | |
1820 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
1821 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
1822 | } | |
1823 | break; | |
1824 | ||
1825 | case WIDEN: | |
1826 | /* In case the vectorization factor (VF) is bigger than the number | |
1827 | of elements that we can fit in a vectype (nunits), we have to | |
1828 | generate more than one vector stmt - i.e - we need to "unroll" | |
1829 | the vector stmt by a factor VF/nunits. */ | |
1830 | for (j = 0; j < ncopies; j++) | |
1831 | { | |
1832 | if (j == 0) | |
1833 | vec_oprnd0 = vect_get_vec_def_for_operand (op0, stmt, NULL); | |
1834 | else | |
1835 | vec_oprnd0 = vect_get_vec_def_for_stmt_copy (dt[0], vec_oprnd0); | |
1836 | ||
ebfd146a IR |
1837 | /* Generate first half of the widened result: */ |
1838 | new_stmt | |
b8698a0f | 1839 | = vect_gen_widened_results_half (code1, decl1, |
ebfd146a IR |
1840 | vec_oprnd0, vec_oprnd1, |
1841 | unary_op, vec_dest, gsi, stmt); | |
1842 | if (j == 0) | |
1843 | STMT_VINFO_VEC_STMT (stmt_info) = new_stmt; | |
1844 | else | |
1845 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
1846 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
1847 | ||
1848 | /* Generate second half of the widened result: */ | |
1849 | new_stmt | |
1850 | = vect_gen_widened_results_half (code2, decl2, | |
1851 | vec_oprnd0, vec_oprnd1, | |
1852 | unary_op, vec_dest, gsi, stmt); | |
1853 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
1854 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
1855 | } | |
1856 | break; | |
1857 | ||
1858 | case NARROW: | |
1859 | /* In case the vectorization factor (VF) is bigger than the number | |
1860 | of elements that we can fit in a vectype (nunits), we have to | |
1861 | generate more than one vector stmt - i.e - we need to "unroll" | |
1862 | the vector stmt by a factor VF/nunits. */ | |
1863 | for (j = 0; j < ncopies; j++) | |
1864 | { | |
1865 | /* Handle uses. */ | |
1866 | if (j == 0) | |
1867 | { | |
1868 | vec_oprnd0 = vect_get_vec_def_for_operand (op0, stmt, NULL); | |
1869 | vec_oprnd1 = vect_get_vec_def_for_stmt_copy (dt[0], vec_oprnd0); | |
1870 | } | |
1871 | else | |
1872 | { | |
1873 | vec_oprnd0 = vect_get_vec_def_for_stmt_copy (dt[0], vec_oprnd1); | |
1874 | vec_oprnd1 = vect_get_vec_def_for_stmt_copy (dt[0], vec_oprnd0); | |
1875 | } | |
1876 | ||
1877 | /* Arguments are ready. Create the new vector stmt. */ | |
ebfd146a IR |
1878 | new_stmt = gimple_build_assign_with_ops (code1, vec_dest, vec_oprnd0, |
1879 | vec_oprnd1); | |
1880 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
1881 | gimple_assign_set_lhs (new_stmt, new_temp); | |
1882 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
1883 | ||
1884 | if (j == 0) | |
1885 | STMT_VINFO_VEC_STMT (stmt_info) = new_stmt; | |
1886 | else | |
1887 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
1888 | ||
1889 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
1890 | } | |
1891 | ||
1892 | *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info); | |
1893 | } | |
1894 | ||
1895 | if (vec_oprnds0) | |
b8698a0f | 1896 | VEC_free (tree, heap, vec_oprnds0); |
ebfd146a IR |
1897 | |
1898 | return true; | |
1899 | } | |
1900 | /* Function vectorizable_assignment. | |
1901 | ||
b8698a0f L |
1902 | Check if STMT performs an assignment (copy) that can be vectorized. |
1903 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
ebfd146a IR |
1904 | stmt to replace it, put it in VEC_STMT, and insert it at BSI. |
1905 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
1906 | ||
1907 | static bool | |
1908 | vectorizable_assignment (gimple stmt, gimple_stmt_iterator *gsi, | |
1909 | gimple *vec_stmt, slp_tree slp_node) | |
1910 | { | |
1911 | tree vec_dest; | |
1912 | tree scalar_dest; | |
1913 | tree op; | |
1914 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
1915 | tree vectype = STMT_VINFO_VECTYPE (stmt_info); | |
1916 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); | |
1917 | tree new_temp; | |
1918 | tree def; | |
1919 | gimple def_stmt; | |
1920 | enum vect_def_type dt[2] = {vect_unknown_def_type, vect_unknown_def_type}; | |
fde9c428 | 1921 | unsigned int nunits = TYPE_VECTOR_SUBPARTS (vectype); |
ebfd146a | 1922 | int ncopies; |
f18b55bd | 1923 | int i, j; |
ebfd146a IR |
1924 | VEC(tree,heap) *vec_oprnds = NULL; |
1925 | tree vop; | |
a70d6342 | 1926 | bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_info); |
f18b55bd IR |
1927 | gimple new_stmt = NULL; |
1928 | stmt_vec_info prev_stmt_info = NULL; | |
fde9c428 RG |
1929 | enum tree_code code; |
1930 | tree vectype_in; | |
ebfd146a IR |
1931 | |
1932 | /* Multiple types in SLP are handled by creating the appropriate number of | |
1933 | vectorized stmts for each SLP node. Hence, NCOPIES is always 1 in | |
1934 | case of SLP. */ | |
1935 | if (slp_node) | |
1936 | ncopies = 1; | |
1937 | else | |
1938 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits; | |
1939 | ||
1940 | gcc_assert (ncopies >= 1); | |
ebfd146a | 1941 | |
a70d6342 | 1942 | if (!STMT_VINFO_RELEVANT_P (stmt_info) && !bb_vinfo) |
ebfd146a IR |
1943 | return false; |
1944 | ||
8644a673 | 1945 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def) |
ebfd146a IR |
1946 | return false; |
1947 | ||
1948 | /* Is vectorizable assignment? */ | |
1949 | if (!is_gimple_assign (stmt)) | |
1950 | return false; | |
1951 | ||
1952 | scalar_dest = gimple_assign_lhs (stmt); | |
1953 | if (TREE_CODE (scalar_dest) != SSA_NAME) | |
1954 | return false; | |
1955 | ||
fde9c428 | 1956 | code = gimple_assign_rhs_code (stmt); |
ebfd146a | 1957 | if (gimple_assign_single_p (stmt) |
fde9c428 RG |
1958 | || code == PAREN_EXPR |
1959 | || CONVERT_EXPR_CODE_P (code)) | |
ebfd146a IR |
1960 | op = gimple_assign_rhs1 (stmt); |
1961 | else | |
1962 | return false; | |
1963 | ||
fde9c428 RG |
1964 | if (!vect_is_simple_use_1 (op, loop_vinfo, bb_vinfo, |
1965 | &def_stmt, &def, &dt[0], &vectype_in)) | |
ebfd146a IR |
1966 | { |
1967 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1968 | fprintf (vect_dump, "use not simple."); | |
1969 | return false; | |
1970 | } | |
1971 | ||
fde9c428 RG |
1972 | /* We can handle NOP_EXPR conversions that do not change the number |
1973 | of elements or the vector size. */ | |
1974 | if (CONVERT_EXPR_CODE_P (code) | |
1975 | && (!vectype_in | |
1976 | || TYPE_VECTOR_SUBPARTS (vectype_in) != nunits | |
1977 | || (GET_MODE_SIZE (TYPE_MODE (vectype)) | |
1978 | != GET_MODE_SIZE (TYPE_MODE (vectype_in))))) | |
1979 | return false; | |
1980 | ||
ebfd146a IR |
1981 | if (!vec_stmt) /* transformation not required. */ |
1982 | { | |
1983 | STMT_VINFO_TYPE (stmt_info) = assignment_vec_info_type; | |
1984 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1985 | fprintf (vect_dump, "=== vectorizable_assignment ==="); | |
1986 | vect_model_simple_cost (stmt_info, ncopies, dt, NULL); | |
1987 | return true; | |
1988 | } | |
1989 | ||
1990 | /** Transform. **/ | |
1991 | if (vect_print_dump_info (REPORT_DETAILS)) | |
1992 | fprintf (vect_dump, "transform assignment."); | |
1993 | ||
1994 | /* Handle def. */ | |
1995 | vec_dest = vect_create_destination_var (scalar_dest, vectype); | |
1996 | ||
1997 | /* Handle use. */ | |
f18b55bd | 1998 | for (j = 0; j < ncopies; j++) |
ebfd146a | 1999 | { |
f18b55bd IR |
2000 | /* Handle uses. */ |
2001 | if (j == 0) | |
2002 | vect_get_vec_defs (op, NULL, stmt, &vec_oprnds, NULL, slp_node); | |
2003 | else | |
2004 | vect_get_vec_defs_for_stmt_copy (dt, &vec_oprnds, NULL); | |
2005 | ||
2006 | /* Arguments are ready. create the new vector stmt. */ | |
ac47786e | 2007 | FOR_EACH_VEC_ELT (tree, vec_oprnds, i, vop) |
f18b55bd | 2008 | { |
fde9c428 | 2009 | if (CONVERT_EXPR_CODE_P (code)) |
4a73490d | 2010 | vop = build1 (VIEW_CONVERT_EXPR, vectype, vop); |
f18b55bd IR |
2011 | new_stmt = gimple_build_assign (vec_dest, vop); |
2012 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
2013 | gimple_assign_set_lhs (new_stmt, new_temp); | |
2014 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
2015 | if (slp_node) | |
2016 | VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt); | |
2017 | } | |
ebfd146a IR |
2018 | |
2019 | if (slp_node) | |
f18b55bd IR |
2020 | continue; |
2021 | ||
2022 | if (j == 0) | |
2023 | STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt; | |
2024 | else | |
2025 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
2026 | ||
2027 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
2028 | } | |
b8698a0f L |
2029 | |
2030 | VEC_free (tree, heap, vec_oprnds); | |
ebfd146a IR |
2031 | return true; |
2032 | } | |
2033 | ||
2034 | /* Function vectorizable_operation. | |
2035 | ||
b8698a0f L |
2036 | Check if STMT performs a binary or unary operation that can be vectorized. |
2037 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
ebfd146a IR |
2038 | stmt to replace it, put it in VEC_STMT, and insert it at BSI. |
2039 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
2040 | ||
2041 | static bool | |
2042 | vectorizable_operation (gimple stmt, gimple_stmt_iterator *gsi, | |
2043 | gimple *vec_stmt, slp_tree slp_node) | |
2044 | { | |
2045 | tree vec_dest; | |
2046 | tree scalar_dest; | |
2047 | tree op0, op1 = NULL; | |
2048 | tree vec_oprnd1 = NULL_TREE; | |
2049 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
b690cc0f | 2050 | tree vectype; |
ebfd146a IR |
2051 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); |
2052 | enum tree_code code; | |
2053 | enum machine_mode vec_mode; | |
2054 | tree new_temp; | |
2055 | int op_type; | |
2056 | optab optab; | |
2057 | int icode; | |
2058 | enum machine_mode optab_op2_mode; | |
2059 | tree def; | |
2060 | gimple def_stmt; | |
2061 | enum vect_def_type dt[2] = {vect_unknown_def_type, vect_unknown_def_type}; | |
2062 | gimple new_stmt = NULL; | |
2063 | stmt_vec_info prev_stmt_info; | |
b690cc0f | 2064 | int nunits_in; |
ebfd146a IR |
2065 | int nunits_out; |
2066 | tree vectype_out; | |
2067 | int ncopies; | |
2068 | int j, i; | |
2069 | VEC(tree,heap) *vec_oprnds0 = NULL, *vec_oprnds1 = NULL; | |
2070 | tree vop0, vop1; | |
2071 | unsigned int k; | |
ebfd146a | 2072 | bool scalar_shift_arg = false; |
a70d6342 IR |
2073 | bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_info); |
2074 | int vf; | |
2075 | ||
a70d6342 | 2076 | if (!STMT_VINFO_RELEVANT_P (stmt_info) && !bb_vinfo) |
ebfd146a IR |
2077 | return false; |
2078 | ||
8644a673 | 2079 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def) |
ebfd146a IR |
2080 | return false; |
2081 | ||
2082 | /* Is STMT a vectorizable binary/unary operation? */ | |
2083 | if (!is_gimple_assign (stmt)) | |
2084 | return false; | |
2085 | ||
2086 | if (TREE_CODE (gimple_assign_lhs (stmt)) != SSA_NAME) | |
2087 | return false; | |
2088 | ||
ebfd146a IR |
2089 | code = gimple_assign_rhs_code (stmt); |
2090 | ||
2091 | /* For pointer addition, we should use the normal plus for | |
2092 | the vector addition. */ | |
2093 | if (code == POINTER_PLUS_EXPR) | |
2094 | code = PLUS_EXPR; | |
2095 | ||
2096 | /* Support only unary or binary operations. */ | |
2097 | op_type = TREE_CODE_LENGTH (code); | |
2098 | if (op_type != unary_op && op_type != binary_op) | |
2099 | { | |
2100 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2101 | fprintf (vect_dump, "num. args = %d (not unary/binary op).", op_type); | |
2102 | return false; | |
2103 | } | |
2104 | ||
b690cc0f RG |
2105 | scalar_dest = gimple_assign_lhs (stmt); |
2106 | vectype_out = STMT_VINFO_VECTYPE (stmt_info); | |
2107 | ||
ebfd146a | 2108 | op0 = gimple_assign_rhs1 (stmt); |
b690cc0f RG |
2109 | if (!vect_is_simple_use_1 (op0, loop_vinfo, bb_vinfo, |
2110 | &def_stmt, &def, &dt[0], &vectype)) | |
ebfd146a IR |
2111 | { |
2112 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2113 | fprintf (vect_dump, "use not simple."); | |
2114 | return false; | |
2115 | } | |
b690cc0f RG |
2116 | /* If op0 is an external or constant def use a vector type with |
2117 | the same size as the output vector type. */ | |
2118 | if (!vectype) | |
2119 | vectype = get_same_sized_vectype (TREE_TYPE (op0), vectype_out); | |
7d8930a0 IR |
2120 | if (vec_stmt) |
2121 | gcc_assert (vectype); | |
2122 | if (!vectype) | |
2123 | { | |
2124 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2125 | { | |
2126 | fprintf (vect_dump, "no vectype for scalar type "); | |
2127 | print_generic_expr (vect_dump, TREE_TYPE (op0), TDF_SLIM); | |
2128 | } | |
2129 | ||
2130 | return false; | |
2131 | } | |
b690cc0f RG |
2132 | |
2133 | nunits_out = TYPE_VECTOR_SUBPARTS (vectype_out); | |
2134 | nunits_in = TYPE_VECTOR_SUBPARTS (vectype); | |
2135 | if (nunits_out != nunits_in) | |
2136 | return false; | |
ebfd146a IR |
2137 | |
2138 | if (op_type == binary_op) | |
2139 | { | |
2140 | op1 = gimple_assign_rhs2 (stmt); | |
b8698a0f | 2141 | if (!vect_is_simple_use (op1, loop_vinfo, bb_vinfo, &def_stmt, &def, |
a70d6342 | 2142 | &dt[1])) |
ebfd146a IR |
2143 | { |
2144 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2145 | fprintf (vect_dump, "use not simple."); | |
2146 | return false; | |
2147 | } | |
2148 | } | |
2149 | ||
b690cc0f RG |
2150 | if (loop_vinfo) |
2151 | vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo); | |
2152 | else | |
2153 | vf = 1; | |
2154 | ||
2155 | /* Multiple types in SLP are handled by creating the appropriate number of | |
2156 | vectorized stmts for each SLP node. Hence, NCOPIES is always 1 in | |
2157 | case of SLP. */ | |
2158 | if (slp_node) | |
2159 | ncopies = 1; | |
2160 | else | |
2161 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits_in; | |
2162 | ||
2163 | gcc_assert (ncopies >= 1); | |
2164 | ||
ebfd146a IR |
2165 | /* If this is a shift/rotate, determine whether the shift amount is a vector, |
2166 | or scalar. If the shift/rotate amount is a vector, use the vector/vector | |
2167 | shift optabs. */ | |
2168 | if (code == LSHIFT_EXPR || code == RSHIFT_EXPR || code == LROTATE_EXPR | |
2169 | || code == RROTATE_EXPR) | |
2170 | { | |
ebfd146a | 2171 | /* vector shifted by vector */ |
8644a673 | 2172 | if (dt[1] == vect_internal_def) |
ebfd146a IR |
2173 | { |
2174 | optab = optab_for_tree_code (code, vectype, optab_vector); | |
2175 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2176 | fprintf (vect_dump, "vector/vector shift/rotate found."); | |
2177 | } | |
2178 | ||
2179 | /* See if the machine has a vector shifted by scalar insn and if not | |
2180 | then see if it has a vector shifted by vector insn */ | |
8644a673 | 2181 | else if (dt[1] == vect_constant_def || dt[1] == vect_external_def) |
ebfd146a IR |
2182 | { |
2183 | optab = optab_for_tree_code (code, vectype, optab_scalar); | |
2184 | if (optab | |
947131ba | 2185 | && optab_handler (optab, TYPE_MODE (vectype)) != CODE_FOR_nothing) |
ebfd146a IR |
2186 | { |
2187 | scalar_shift_arg = true; | |
2188 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2189 | fprintf (vect_dump, "vector/scalar shift/rotate found."); | |
2190 | } | |
2191 | else | |
2192 | { | |
2193 | optab = optab_for_tree_code (code, vectype, optab_vector); | |
ad6c0864 | 2194 | if (optab |
947131ba | 2195 | && (optab_handler (optab, TYPE_MODE (vectype)) |
ebfd146a | 2196 | != CODE_FOR_nothing)) |
ad6c0864 MM |
2197 | { |
2198 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2199 | fprintf (vect_dump, "vector/vector shift/rotate found."); | |
2200 | ||
2201 | /* Unlike the other binary operators, shifts/rotates have | |
2202 | the rhs being int, instead of the same type as the lhs, | |
2203 | so make sure the scalar is the right type if we are | |
2204 | dealing with vectors of short/char. */ | |
2205 | if (dt[1] == vect_constant_def) | |
2206 | op1 = fold_convert (TREE_TYPE (vectype), op1); | |
2207 | } | |
ebfd146a IR |
2208 | } |
2209 | } | |
2210 | ||
2211 | else | |
2212 | { | |
2213 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2214 | fprintf (vect_dump, "operand mode requires invariant argument."); | |
2215 | return false; | |
2216 | } | |
2217 | } | |
2218 | else | |
2219 | optab = optab_for_tree_code (code, vectype, optab_default); | |
2220 | ||
2221 | /* Supportable by target? */ | |
2222 | if (!optab) | |
2223 | { | |
2224 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2225 | fprintf (vect_dump, "no optab."); | |
2226 | return false; | |
2227 | } | |
2228 | vec_mode = TYPE_MODE (vectype); | |
947131ba | 2229 | icode = (int) optab_handler (optab, vec_mode); |
ebfd146a IR |
2230 | if (icode == CODE_FOR_nothing) |
2231 | { | |
2232 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2233 | fprintf (vect_dump, "op not supported by target."); | |
2234 | /* Check only during analysis. */ | |
2235 | if (GET_MODE_SIZE (vec_mode) != UNITS_PER_WORD | |
a70d6342 | 2236 | || (vf < vect_min_worthwhile_factor (code) |
ebfd146a IR |
2237 | && !vec_stmt)) |
2238 | return false; | |
2239 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2240 | fprintf (vect_dump, "proceeding using word mode."); | |
2241 | } | |
2242 | ||
2243 | /* Worthwhile without SIMD support? Check only during analysis. */ | |
2244 | if (!VECTOR_MODE_P (TYPE_MODE (vectype)) | |
a70d6342 | 2245 | && vf < vect_min_worthwhile_factor (code) |
ebfd146a IR |
2246 | && !vec_stmt) |
2247 | { | |
2248 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2249 | fprintf (vect_dump, "not worthwhile without SIMD support."); | |
2250 | return false; | |
2251 | } | |
2252 | ||
2253 | if (!vec_stmt) /* transformation not required. */ | |
2254 | { | |
2255 | STMT_VINFO_TYPE (stmt_info) = op_vec_info_type; | |
2256 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2257 | fprintf (vect_dump, "=== vectorizable_operation ==="); | |
2258 | vect_model_simple_cost (stmt_info, ncopies, dt, NULL); | |
2259 | return true; | |
2260 | } | |
2261 | ||
2262 | /** Transform. **/ | |
2263 | ||
2264 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2265 | fprintf (vect_dump, "transform binary/unary operation."); | |
2266 | ||
2267 | /* Handle def. */ | |
2268 | vec_dest = vect_create_destination_var (scalar_dest, vectype); | |
2269 | ||
b8698a0f | 2270 | /* Allocate VECs for vector operands. In case of SLP, vector operands are |
ebfd146a IR |
2271 | created in the previous stages of the recursion, so no allocation is |
2272 | needed, except for the case of shift with scalar shift argument. In that | |
2273 | case we store the scalar operand in VEC_OPRNDS1 for every vector stmt to | |
2274 | be created to vectorize the SLP group, i.e., SLP_NODE->VEC_STMTS_SIZE. | |
b8698a0f L |
2275 | In case of loop-based vectorization we allocate VECs of size 1. We |
2276 | allocate VEC_OPRNDS1 only in case of binary operation. */ | |
ebfd146a IR |
2277 | if (!slp_node) |
2278 | { | |
2279 | vec_oprnds0 = VEC_alloc (tree, heap, 1); | |
2280 | if (op_type == binary_op) | |
2281 | vec_oprnds1 = VEC_alloc (tree, heap, 1); | |
2282 | } | |
2283 | else if (scalar_shift_arg) | |
b8698a0f | 2284 | vec_oprnds1 = VEC_alloc (tree, heap, slp_node->vec_stmts_size); |
ebfd146a IR |
2285 | |
2286 | /* In case the vectorization factor (VF) is bigger than the number | |
2287 | of elements that we can fit in a vectype (nunits), we have to generate | |
2288 | more than one vector stmt - i.e - we need to "unroll" the | |
2289 | vector stmt by a factor VF/nunits. In doing so, we record a pointer | |
2290 | from one copy of the vector stmt to the next, in the field | |
2291 | STMT_VINFO_RELATED_STMT. This is necessary in order to allow following | |
2292 | stages to find the correct vector defs to be used when vectorizing | |
2293 | stmts that use the defs of the current stmt. The example below illustrates | |
2294 | the vectorization process when VF=16 and nunits=4 (i.e - we need to create | |
2295 | 4 vectorized stmts): | |
2296 | ||
2297 | before vectorization: | |
2298 | RELATED_STMT VEC_STMT | |
2299 | S1: x = memref - - | |
2300 | S2: z = x + 1 - - | |
2301 | ||
2302 | step 1: vectorize stmt S1 (done in vectorizable_load. See more details | |
2303 | there): | |
2304 | RELATED_STMT VEC_STMT | |
2305 | VS1_0: vx0 = memref0 VS1_1 - | |
2306 | VS1_1: vx1 = memref1 VS1_2 - | |
2307 | VS1_2: vx2 = memref2 VS1_3 - | |
2308 | VS1_3: vx3 = memref3 - - | |
2309 | S1: x = load - VS1_0 | |
2310 | S2: z = x + 1 - - | |
2311 | ||
2312 | step2: vectorize stmt S2 (done here): | |
2313 | To vectorize stmt S2 we first need to find the relevant vector | |
2314 | def for the first operand 'x'. This is, as usual, obtained from | |
2315 | the vector stmt recorded in the STMT_VINFO_VEC_STMT of the stmt | |
2316 | that defines 'x' (S1). This way we find the stmt VS1_0, and the | |
2317 | relevant vector def 'vx0'. Having found 'vx0' we can generate | |
2318 | the vector stmt VS2_0, and as usual, record it in the | |
2319 | STMT_VINFO_VEC_STMT of stmt S2. | |
2320 | When creating the second copy (VS2_1), we obtain the relevant vector | |
2321 | def from the vector stmt recorded in the STMT_VINFO_RELATED_STMT of | |
2322 | stmt VS1_0. This way we find the stmt VS1_1 and the relevant | |
2323 | vector def 'vx1'. Using 'vx1' we create stmt VS2_1 and record a | |
2324 | pointer to it in the STMT_VINFO_RELATED_STMT of the vector stmt VS2_0. | |
2325 | Similarly when creating stmts VS2_2 and VS2_3. This is the resulting | |
2326 | chain of stmts and pointers: | |
2327 | RELATED_STMT VEC_STMT | |
2328 | VS1_0: vx0 = memref0 VS1_1 - | |
2329 | VS1_1: vx1 = memref1 VS1_2 - | |
2330 | VS1_2: vx2 = memref2 VS1_3 - | |
2331 | VS1_3: vx3 = memref3 - - | |
2332 | S1: x = load - VS1_0 | |
2333 | VS2_0: vz0 = vx0 + v1 VS2_1 - | |
2334 | VS2_1: vz1 = vx1 + v1 VS2_2 - | |
2335 | VS2_2: vz2 = vx2 + v1 VS2_3 - | |
2336 | VS2_3: vz3 = vx3 + v1 - - | |
2337 | S2: z = x + 1 - VS2_0 */ | |
2338 | ||
2339 | prev_stmt_info = NULL; | |
2340 | for (j = 0; j < ncopies; j++) | |
2341 | { | |
2342 | /* Handle uses. */ | |
2343 | if (j == 0) | |
2344 | { | |
2345 | if (op_type == binary_op && scalar_shift_arg) | |
2346 | { | |
b8698a0f L |
2347 | /* Vector shl and shr insn patterns can be defined with scalar |
2348 | operand 2 (shift operand). In this case, use constant or loop | |
2349 | invariant op1 directly, without extending it to vector mode | |
ebfd146a IR |
2350 | first. */ |
2351 | optab_op2_mode = insn_data[icode].operand[2].mode; | |
2352 | if (!VECTOR_MODE_P (optab_op2_mode)) | |
2353 | { | |
2354 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2355 | fprintf (vect_dump, "operand 1 using scalar mode."); | |
2356 | vec_oprnd1 = op1; | |
2357 | VEC_quick_push (tree, vec_oprnds1, vec_oprnd1); | |
2358 | if (slp_node) | |
2359 | { | |
2360 | /* Store vec_oprnd1 for every vector stmt to be created | |
2361 | for SLP_NODE. We check during the analysis that all the | |
b8698a0f L |
2362 | shift arguments are the same. |
2363 | TODO: Allow different constants for different vector | |
2364 | stmts generated for an SLP instance. */ | |
ebfd146a IR |
2365 | for (k = 0; k < slp_node->vec_stmts_size - 1; k++) |
2366 | VEC_quick_push (tree, vec_oprnds1, vec_oprnd1); | |
2367 | } | |
2368 | } | |
2369 | } | |
b8698a0f L |
2370 | |
2371 | /* vec_oprnd1 is available if operand 1 should be of a scalar-type | |
2372 | (a special case for certain kind of vector shifts); otherwise, | |
ebfd146a IR |
2373 | operand 1 should be of a vector type (the usual case). */ |
2374 | if (op_type == binary_op && !vec_oprnd1) | |
b8698a0f | 2375 | vect_get_vec_defs (op0, op1, stmt, &vec_oprnds0, &vec_oprnds1, |
ebfd146a IR |
2376 | slp_node); |
2377 | else | |
b8698a0f | 2378 | vect_get_vec_defs (op0, NULL_TREE, stmt, &vec_oprnds0, NULL, |
ebfd146a IR |
2379 | slp_node); |
2380 | } | |
2381 | else | |
2382 | vect_get_vec_defs_for_stmt_copy (dt, &vec_oprnds0, &vec_oprnds1); | |
2383 | ||
2384 | /* Arguments are ready. Create the new vector stmt. */ | |
ac47786e | 2385 | FOR_EACH_VEC_ELT (tree, vec_oprnds0, i, vop0) |
ebfd146a IR |
2386 | { |
2387 | vop1 = ((op_type == binary_op) | |
2388 | ? VEC_index (tree, vec_oprnds1, i) : NULL); | |
2389 | new_stmt = gimple_build_assign_with_ops (code, vec_dest, vop0, vop1); | |
2390 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
2391 | gimple_assign_set_lhs (new_stmt, new_temp); | |
2392 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
2393 | if (slp_node) | |
2394 | VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt); | |
2395 | } | |
2396 | ||
2397 | if (slp_node) | |
2398 | continue; | |
2399 | ||
2400 | if (j == 0) | |
2401 | STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt; | |
2402 | else | |
2403 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
2404 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
2405 | } | |
2406 | ||
2407 | VEC_free (tree, heap, vec_oprnds0); | |
2408 | if (vec_oprnds1) | |
2409 | VEC_free (tree, heap, vec_oprnds1); | |
2410 | ||
2411 | return true; | |
2412 | } | |
2413 | ||
2414 | ||
2415 | /* Get vectorized definitions for loop-based vectorization. For the first | |
b8698a0f L |
2416 | operand we call vect_get_vec_def_for_operand() (with OPRND containing |
2417 | scalar operand), and for the rest we get a copy with | |
ebfd146a IR |
2418 | vect_get_vec_def_for_stmt_copy() using the previous vector definition |
2419 | (stored in OPRND). See vect_get_vec_def_for_stmt_copy() for details. | |
2420 | The vectors are collected into VEC_OPRNDS. */ | |
2421 | ||
2422 | static void | |
b8698a0f | 2423 | vect_get_loop_based_defs (tree *oprnd, gimple stmt, enum vect_def_type dt, |
ebfd146a IR |
2424 | VEC (tree, heap) **vec_oprnds, int multi_step_cvt) |
2425 | { | |
2426 | tree vec_oprnd; | |
2427 | ||
2428 | /* Get first vector operand. */ | |
2429 | /* All the vector operands except the very first one (that is scalar oprnd) | |
2430 | are stmt copies. */ | |
b8698a0f | 2431 | if (TREE_CODE (TREE_TYPE (*oprnd)) != VECTOR_TYPE) |
ebfd146a IR |
2432 | vec_oprnd = vect_get_vec_def_for_operand (*oprnd, stmt, NULL); |
2433 | else | |
2434 | vec_oprnd = vect_get_vec_def_for_stmt_copy (dt, *oprnd); | |
2435 | ||
2436 | VEC_quick_push (tree, *vec_oprnds, vec_oprnd); | |
2437 | ||
2438 | /* Get second vector operand. */ | |
2439 | vec_oprnd = vect_get_vec_def_for_stmt_copy (dt, vec_oprnd); | |
2440 | VEC_quick_push (tree, *vec_oprnds, vec_oprnd); | |
b8698a0f | 2441 | |
ebfd146a IR |
2442 | *oprnd = vec_oprnd; |
2443 | ||
b8698a0f | 2444 | /* For conversion in multiple steps, continue to get operands |
ebfd146a IR |
2445 | recursively. */ |
2446 | if (multi_step_cvt) | |
b8698a0f | 2447 | vect_get_loop_based_defs (oprnd, stmt, dt, vec_oprnds, multi_step_cvt - 1); |
ebfd146a IR |
2448 | } |
2449 | ||
2450 | ||
2451 | /* Create vectorized demotion statements for vector operands from VEC_OPRNDS. | |
b8698a0f | 2452 | For multi-step conversions store the resulting vectors and call the function |
ebfd146a IR |
2453 | recursively. */ |
2454 | ||
2455 | static void | |
2456 | vect_create_vectorized_demotion_stmts (VEC (tree, heap) **vec_oprnds, | |
2457 | int multi_step_cvt, gimple stmt, | |
2458 | VEC (tree, heap) *vec_dsts, | |
2459 | gimple_stmt_iterator *gsi, | |
2460 | slp_tree slp_node, enum tree_code code, | |
2461 | stmt_vec_info *prev_stmt_info) | |
2462 | { | |
2463 | unsigned int i; | |
2464 | tree vop0, vop1, new_tmp, vec_dest; | |
2465 | gimple new_stmt; | |
2466 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
2467 | ||
b8698a0f | 2468 | vec_dest = VEC_pop (tree, vec_dsts); |
ebfd146a IR |
2469 | |
2470 | for (i = 0; i < VEC_length (tree, *vec_oprnds); i += 2) | |
2471 | { | |
2472 | /* Create demotion operation. */ | |
2473 | vop0 = VEC_index (tree, *vec_oprnds, i); | |
2474 | vop1 = VEC_index (tree, *vec_oprnds, i + 1); | |
2475 | new_stmt = gimple_build_assign_with_ops (code, vec_dest, vop0, vop1); | |
2476 | new_tmp = make_ssa_name (vec_dest, new_stmt); | |
2477 | gimple_assign_set_lhs (new_stmt, new_tmp); | |
2478 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
2479 | ||
2480 | if (multi_step_cvt) | |
2481 | /* Store the resulting vector for next recursive call. */ | |
b8698a0f | 2482 | VEC_replace (tree, *vec_oprnds, i/2, new_tmp); |
ebfd146a IR |
2483 | else |
2484 | { | |
b8698a0f | 2485 | /* This is the last step of the conversion sequence. Store the |
ebfd146a IR |
2486 | vectors in SLP_NODE or in vector info of the scalar statement |
2487 | (or in STMT_VINFO_RELATED_STMT chain). */ | |
2488 | if (slp_node) | |
2489 | VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt); | |
2490 | else | |
2491 | { | |
2492 | if (!*prev_stmt_info) | |
2493 | STMT_VINFO_VEC_STMT (stmt_info) = new_stmt; | |
2494 | else | |
2495 | STMT_VINFO_RELATED_STMT (*prev_stmt_info) = new_stmt; | |
2496 | ||
2497 | *prev_stmt_info = vinfo_for_stmt (new_stmt); | |
2498 | } | |
2499 | } | |
2500 | } | |
2501 | ||
2502 | /* For multi-step demotion operations we first generate demotion operations | |
b8698a0f | 2503 | from the source type to the intermediate types, and then combine the |
ebfd146a IR |
2504 | results (stored in VEC_OPRNDS) in demotion operation to the destination |
2505 | type. */ | |
2506 | if (multi_step_cvt) | |
2507 | { | |
2508 | /* At each level of recursion we have have of the operands we had at the | |
2509 | previous level. */ | |
2510 | VEC_truncate (tree, *vec_oprnds, (i+1)/2); | |
b8698a0f | 2511 | vect_create_vectorized_demotion_stmts (vec_oprnds, multi_step_cvt - 1, |
ebfd146a IR |
2512 | stmt, vec_dsts, gsi, slp_node, |
2513 | code, prev_stmt_info); | |
2514 | } | |
2515 | } | |
2516 | ||
2517 | ||
2518 | /* Function vectorizable_type_demotion | |
2519 | ||
2520 | Check if STMT performs a binary or unary operation that involves | |
2521 | type demotion, and if it can be vectorized. | |
2522 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
2523 | stmt to replace it, put it in VEC_STMT, and insert it at BSI. | |
2524 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
2525 | ||
2526 | static bool | |
2527 | vectorizable_type_demotion (gimple stmt, gimple_stmt_iterator *gsi, | |
2528 | gimple *vec_stmt, slp_tree slp_node) | |
2529 | { | |
2530 | tree vec_dest; | |
2531 | tree scalar_dest; | |
2532 | tree op0; | |
2533 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
2534 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); | |
2535 | enum tree_code code, code1 = ERROR_MARK; | |
2536 | tree def; | |
2537 | gimple def_stmt; | |
2538 | enum vect_def_type dt[2] = {vect_unknown_def_type, vect_unknown_def_type}; | |
2539 | stmt_vec_info prev_stmt_info; | |
2540 | int nunits_in; | |
2541 | int nunits_out; | |
2542 | tree vectype_out; | |
2543 | int ncopies; | |
2544 | int j, i; | |
2545 | tree vectype_in; | |
2546 | int multi_step_cvt = 0; | |
2547 | VEC (tree, heap) *vec_oprnds0 = NULL; | |
2548 | VEC (tree, heap) *vec_dsts = NULL, *interm_types = NULL, *tmp_vec_dsts = NULL; | |
2549 | tree last_oprnd, intermediate_type; | |
2550 | ||
a70d6342 IR |
2551 | /* FORNOW: not supported by basic block SLP vectorization. */ |
2552 | gcc_assert (loop_vinfo); | |
2553 | ||
ebfd146a IR |
2554 | if (!STMT_VINFO_RELEVANT_P (stmt_info)) |
2555 | return false; | |
2556 | ||
8644a673 | 2557 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def) |
ebfd146a IR |
2558 | return false; |
2559 | ||
2560 | /* Is STMT a vectorizable type-demotion operation? */ | |
2561 | if (!is_gimple_assign (stmt)) | |
2562 | return false; | |
2563 | ||
2564 | if (TREE_CODE (gimple_assign_lhs (stmt)) != SSA_NAME) | |
2565 | return false; | |
2566 | ||
2567 | code = gimple_assign_rhs_code (stmt); | |
2568 | if (!CONVERT_EXPR_CODE_P (code)) | |
2569 | return false; | |
2570 | ||
b690cc0f RG |
2571 | scalar_dest = gimple_assign_lhs (stmt); |
2572 | vectype_out = STMT_VINFO_VECTYPE (stmt_info); | |
2573 | ||
2574 | /* Check the operands of the operation. */ | |
ebfd146a | 2575 | op0 = gimple_assign_rhs1 (stmt); |
b690cc0f RG |
2576 | if (! ((INTEGRAL_TYPE_P (TREE_TYPE (scalar_dest)) |
2577 | && INTEGRAL_TYPE_P (TREE_TYPE (op0))) | |
2578 | || (SCALAR_FLOAT_TYPE_P (TREE_TYPE (scalar_dest)) | |
2579 | && SCALAR_FLOAT_TYPE_P (TREE_TYPE (op0)) | |
2580 | && CONVERT_EXPR_CODE_P (code)))) | |
2581 | return false; | |
2582 | if (!vect_is_simple_use_1 (op0, loop_vinfo, NULL, | |
2583 | &def_stmt, &def, &dt[0], &vectype_in)) | |
2584 | { | |
2585 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2586 | fprintf (vect_dump, "use not simple."); | |
2587 | return false; | |
2588 | } | |
2589 | /* If op0 is an external def use a vector type with the | |
2590 | same size as the output vector type if possible. */ | |
2591 | if (!vectype_in) | |
2592 | vectype_in = get_same_sized_vectype (TREE_TYPE (op0), vectype_out); | |
7d8930a0 IR |
2593 | if (vec_stmt) |
2594 | gcc_assert (vectype_in); | |
ebfd146a | 2595 | if (!vectype_in) |
7d8930a0 IR |
2596 | { |
2597 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2598 | { | |
2599 | fprintf (vect_dump, "no vectype for scalar type "); | |
2600 | print_generic_expr (vect_dump, TREE_TYPE (op0), TDF_SLIM); | |
2601 | } | |
2602 | ||
2603 | return false; | |
2604 | } | |
ebfd146a | 2605 | |
b690cc0f | 2606 | nunits_in = TYPE_VECTOR_SUBPARTS (vectype_in); |
ebfd146a IR |
2607 | nunits_out = TYPE_VECTOR_SUBPARTS (vectype_out); |
2608 | if (nunits_in >= nunits_out) | |
2609 | return false; | |
2610 | ||
2611 | /* Multiple types in SLP are handled by creating the appropriate number of | |
2612 | vectorized stmts for each SLP node. Hence, NCOPIES is always 1 in | |
2613 | case of SLP. */ | |
2614 | if (slp_node) | |
2615 | ncopies = 1; | |
2616 | else | |
2617 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits_out; | |
ebfd146a IR |
2618 | gcc_assert (ncopies >= 1); |
2619 | ||
ebfd146a | 2620 | /* Supportable by target? */ |
b690cc0f RG |
2621 | if (!supportable_narrowing_operation (code, vectype_out, vectype_in, |
2622 | &code1, &multi_step_cvt, &interm_types)) | |
ebfd146a IR |
2623 | return false; |
2624 | ||
ebfd146a IR |
2625 | if (!vec_stmt) /* transformation not required. */ |
2626 | { | |
2627 | STMT_VINFO_TYPE (stmt_info) = type_demotion_vec_info_type; | |
2628 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2629 | fprintf (vect_dump, "=== vectorizable_demotion ==="); | |
2630 | vect_model_simple_cost (stmt_info, ncopies, dt, NULL); | |
2631 | return true; | |
2632 | } | |
2633 | ||
2634 | /** Transform. **/ | |
2635 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2636 | fprintf (vect_dump, "transform type demotion operation. ncopies = %d.", | |
2637 | ncopies); | |
2638 | ||
b8698a0f L |
2639 | /* In case of multi-step demotion, we first generate demotion operations to |
2640 | the intermediate types, and then from that types to the final one. | |
ebfd146a | 2641 | We create vector destinations for the intermediate type (TYPES) received |
b8698a0f | 2642 | from supportable_narrowing_operation, and store them in the correct order |
ebfd146a IR |
2643 | for future use in vect_create_vectorized_demotion_stmts(). */ |
2644 | if (multi_step_cvt) | |
2645 | vec_dsts = VEC_alloc (tree, heap, multi_step_cvt + 1); | |
2646 | else | |
2647 | vec_dsts = VEC_alloc (tree, heap, 1); | |
b8698a0f | 2648 | |
ebfd146a IR |
2649 | vec_dest = vect_create_destination_var (scalar_dest, vectype_out); |
2650 | VEC_quick_push (tree, vec_dsts, vec_dest); | |
2651 | ||
2652 | if (multi_step_cvt) | |
2653 | { | |
b8698a0f | 2654 | for (i = VEC_length (tree, interm_types) - 1; |
ebfd146a IR |
2655 | VEC_iterate (tree, interm_types, i, intermediate_type); i--) |
2656 | { | |
b8698a0f | 2657 | vec_dest = vect_create_destination_var (scalar_dest, |
ebfd146a IR |
2658 | intermediate_type); |
2659 | VEC_quick_push (tree, vec_dsts, vec_dest); | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | /* In case the vectorization factor (VF) is bigger than the number | |
2664 | of elements that we can fit in a vectype (nunits), we have to generate | |
2665 | more than one vector stmt - i.e - we need to "unroll" the | |
2666 | vector stmt by a factor VF/nunits. */ | |
2667 | last_oprnd = op0; | |
2668 | prev_stmt_info = NULL; | |
2669 | for (j = 0; j < ncopies; j++) | |
2670 | { | |
2671 | /* Handle uses. */ | |
2672 | if (slp_node) | |
b5aeb3bb | 2673 | vect_get_slp_defs (slp_node, &vec_oprnds0, NULL, -1); |
ebfd146a IR |
2674 | else |
2675 | { | |
2676 | VEC_free (tree, heap, vec_oprnds0); | |
2677 | vec_oprnds0 = VEC_alloc (tree, heap, | |
2678 | (multi_step_cvt ? vect_pow2 (multi_step_cvt) * 2 : 2)); | |
b8698a0f | 2679 | vect_get_loop_based_defs (&last_oprnd, stmt, dt[0], &vec_oprnds0, |
ebfd146a IR |
2680 | vect_pow2 (multi_step_cvt) - 1); |
2681 | } | |
2682 | ||
2683 | /* Arguments are ready. Create the new vector stmts. */ | |
2684 | tmp_vec_dsts = VEC_copy (tree, heap, vec_dsts); | |
b8698a0f | 2685 | vect_create_vectorized_demotion_stmts (&vec_oprnds0, |
ebfd146a | 2686 | multi_step_cvt, stmt, tmp_vec_dsts, |
b8698a0f | 2687 | gsi, slp_node, code1, |
ebfd146a IR |
2688 | &prev_stmt_info); |
2689 | } | |
2690 | ||
2691 | VEC_free (tree, heap, vec_oprnds0); | |
2692 | VEC_free (tree, heap, vec_dsts); | |
2693 | VEC_free (tree, heap, tmp_vec_dsts); | |
2694 | VEC_free (tree, heap, interm_types); | |
2695 | ||
2696 | *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info); | |
2697 | return true; | |
2698 | } | |
2699 | ||
2700 | ||
2701 | /* Create vectorized promotion statements for vector operands from VEC_OPRNDS0 | |
b8698a0f | 2702 | and VEC_OPRNDS1 (for binary operations). For multi-step conversions store |
ebfd146a IR |
2703 | the resulting vectors and call the function recursively. */ |
2704 | ||
2705 | static void | |
2706 | vect_create_vectorized_promotion_stmts (VEC (tree, heap) **vec_oprnds0, | |
2707 | VEC (tree, heap) **vec_oprnds1, | |
2708 | int multi_step_cvt, gimple stmt, | |
2709 | VEC (tree, heap) *vec_dsts, | |
2710 | gimple_stmt_iterator *gsi, | |
2711 | slp_tree slp_node, enum tree_code code1, | |
b8698a0f | 2712 | enum tree_code code2, tree decl1, |
ebfd146a IR |
2713 | tree decl2, int op_type, |
2714 | stmt_vec_info *prev_stmt_info) | |
2715 | { | |
2716 | int i; | |
2717 | tree vop0, vop1, new_tmp1, new_tmp2, vec_dest; | |
2718 | gimple new_stmt1, new_stmt2; | |
2719 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
2720 | VEC (tree, heap) *vec_tmp; | |
2721 | ||
2722 | vec_dest = VEC_pop (tree, vec_dsts); | |
2723 | vec_tmp = VEC_alloc (tree, heap, VEC_length (tree, *vec_oprnds0) * 2); | |
2724 | ||
ac47786e | 2725 | FOR_EACH_VEC_ELT (tree, *vec_oprnds0, i, vop0) |
ebfd146a IR |
2726 | { |
2727 | if (op_type == binary_op) | |
2728 | vop1 = VEC_index (tree, *vec_oprnds1, i); | |
2729 | else | |
2730 | vop1 = NULL_TREE; | |
2731 | ||
2732 | /* Generate the two halves of promotion operation. */ | |
b8698a0f | 2733 | new_stmt1 = vect_gen_widened_results_half (code1, decl1, vop0, vop1, |
ebfd146a IR |
2734 | op_type, vec_dest, gsi, stmt); |
2735 | new_stmt2 = vect_gen_widened_results_half (code2, decl2, vop0, vop1, | |
2736 | op_type, vec_dest, gsi, stmt); | |
2737 | if (is_gimple_call (new_stmt1)) | |
2738 | { | |
2739 | new_tmp1 = gimple_call_lhs (new_stmt1); | |
2740 | new_tmp2 = gimple_call_lhs (new_stmt2); | |
2741 | } | |
2742 | else | |
2743 | { | |
2744 | new_tmp1 = gimple_assign_lhs (new_stmt1); | |
2745 | new_tmp2 = gimple_assign_lhs (new_stmt2); | |
2746 | } | |
2747 | ||
2748 | if (multi_step_cvt) | |
2749 | { | |
2750 | /* Store the results for the recursive call. */ | |
2751 | VEC_quick_push (tree, vec_tmp, new_tmp1); | |
2752 | VEC_quick_push (tree, vec_tmp, new_tmp2); | |
2753 | } | |
2754 | else | |
2755 | { | |
2756 | /* Last step of promotion sequience - store the results. */ | |
2757 | if (slp_node) | |
2758 | { | |
2759 | VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt1); | |
2760 | VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt2); | |
2761 | } | |
2762 | else | |
2763 | { | |
2764 | if (!*prev_stmt_info) | |
2765 | STMT_VINFO_VEC_STMT (stmt_info) = new_stmt1; | |
2766 | else | |
2767 | STMT_VINFO_RELATED_STMT (*prev_stmt_info) = new_stmt1; | |
2768 | ||
2769 | *prev_stmt_info = vinfo_for_stmt (new_stmt1); | |
2770 | STMT_VINFO_RELATED_STMT (*prev_stmt_info) = new_stmt2; | |
2771 | *prev_stmt_info = vinfo_for_stmt (new_stmt2); | |
2772 | } | |
2773 | } | |
2774 | } | |
2775 | ||
2776 | if (multi_step_cvt) | |
2777 | { | |
b8698a0f | 2778 | /* For multi-step promotion operation we first generate we call the |
ebfd146a IR |
2779 | function recurcively for every stage. We start from the input type, |
2780 | create promotion operations to the intermediate types, and then | |
2781 | create promotions to the output type. */ | |
2782 | *vec_oprnds0 = VEC_copy (tree, heap, vec_tmp); | |
2783 | VEC_free (tree, heap, vec_tmp); | |
2784 | vect_create_vectorized_promotion_stmts (vec_oprnds0, vec_oprnds1, | |
2785 | multi_step_cvt - 1, stmt, | |
2786 | vec_dsts, gsi, slp_node, code1, | |
2787 | code2, decl2, decl2, op_type, | |
2788 | prev_stmt_info); | |
2789 | } | |
2790 | } | |
b8698a0f | 2791 | |
ebfd146a IR |
2792 | |
2793 | /* Function vectorizable_type_promotion | |
2794 | ||
2795 | Check if STMT performs a binary or unary operation that involves | |
2796 | type promotion, and if it can be vectorized. | |
2797 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
2798 | stmt to replace it, put it in VEC_STMT, and insert it at BSI. | |
2799 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
2800 | ||
2801 | static bool | |
2802 | vectorizable_type_promotion (gimple stmt, gimple_stmt_iterator *gsi, | |
2803 | gimple *vec_stmt, slp_tree slp_node) | |
2804 | { | |
2805 | tree vec_dest; | |
2806 | tree scalar_dest; | |
2807 | tree op0, op1 = NULL; | |
2808 | tree vec_oprnd0=NULL, vec_oprnd1=NULL; | |
2809 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
2810 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); | |
2811 | enum tree_code code, code1 = ERROR_MARK, code2 = ERROR_MARK; | |
2812 | tree decl1 = NULL_TREE, decl2 = NULL_TREE; | |
b8698a0f | 2813 | int op_type; |
ebfd146a IR |
2814 | tree def; |
2815 | gimple def_stmt; | |
2816 | enum vect_def_type dt[2] = {vect_unknown_def_type, vect_unknown_def_type}; | |
2817 | stmt_vec_info prev_stmt_info; | |
2818 | int nunits_in; | |
2819 | int nunits_out; | |
2820 | tree vectype_out; | |
2821 | int ncopies; | |
2822 | int j, i; | |
2823 | tree vectype_in; | |
2824 | tree intermediate_type = NULL_TREE; | |
2825 | int multi_step_cvt = 0; | |
2826 | VEC (tree, heap) *vec_oprnds0 = NULL, *vec_oprnds1 = NULL; | |
2827 | VEC (tree, heap) *vec_dsts = NULL, *interm_types = NULL, *tmp_vec_dsts = NULL; | |
b8698a0f | 2828 | |
a70d6342 IR |
2829 | /* FORNOW: not supported by basic block SLP vectorization. */ |
2830 | gcc_assert (loop_vinfo); | |
b8698a0f | 2831 | |
ebfd146a IR |
2832 | if (!STMT_VINFO_RELEVANT_P (stmt_info)) |
2833 | return false; | |
2834 | ||
8644a673 | 2835 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def) |
ebfd146a IR |
2836 | return false; |
2837 | ||
2838 | /* Is STMT a vectorizable type-promotion operation? */ | |
2839 | if (!is_gimple_assign (stmt)) | |
2840 | return false; | |
2841 | ||
2842 | if (TREE_CODE (gimple_assign_lhs (stmt)) != SSA_NAME) | |
2843 | return false; | |
2844 | ||
2845 | code = gimple_assign_rhs_code (stmt); | |
2846 | if (!CONVERT_EXPR_CODE_P (code) | |
2847 | && code != WIDEN_MULT_EXPR) | |
2848 | return false; | |
2849 | ||
b690cc0f RG |
2850 | scalar_dest = gimple_assign_lhs (stmt); |
2851 | vectype_out = STMT_VINFO_VECTYPE (stmt_info); | |
2852 | ||
2853 | /* Check the operands of the operation. */ | |
ebfd146a | 2854 | op0 = gimple_assign_rhs1 (stmt); |
b690cc0f RG |
2855 | if (! ((INTEGRAL_TYPE_P (TREE_TYPE (scalar_dest)) |
2856 | && INTEGRAL_TYPE_P (TREE_TYPE (op0))) | |
2857 | || (SCALAR_FLOAT_TYPE_P (TREE_TYPE (scalar_dest)) | |
2858 | && SCALAR_FLOAT_TYPE_P (TREE_TYPE (op0)) | |
2859 | && CONVERT_EXPR_CODE_P (code)))) | |
2860 | return false; | |
2861 | if (!vect_is_simple_use_1 (op0, loop_vinfo, NULL, | |
2862 | &def_stmt, &def, &dt[0], &vectype_in)) | |
2863 | { | |
2864 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2865 | fprintf (vect_dump, "use not simple."); | |
2866 | return false; | |
2867 | } | |
2868 | /* If op0 is an external or constant def use a vector type with | |
2869 | the same size as the output vector type. */ | |
2870 | if (!vectype_in) | |
2871 | vectype_in = get_same_sized_vectype (TREE_TYPE (op0), vectype_out); | |
7d8930a0 IR |
2872 | if (vec_stmt) |
2873 | gcc_assert (vectype_in); | |
ebfd146a | 2874 | if (!vectype_in) |
7d8930a0 IR |
2875 | { |
2876 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2877 | { | |
2878 | fprintf (vect_dump, "no vectype for scalar type "); | |
2879 | print_generic_expr (vect_dump, TREE_TYPE (op0), TDF_SLIM); | |
2880 | } | |
2881 | ||
2882 | return false; | |
2883 | } | |
ebfd146a | 2884 | |
b690cc0f | 2885 | nunits_in = TYPE_VECTOR_SUBPARTS (vectype_in); |
ebfd146a IR |
2886 | nunits_out = TYPE_VECTOR_SUBPARTS (vectype_out); |
2887 | if (nunits_in <= nunits_out) | |
2888 | return false; | |
2889 | ||
2890 | /* Multiple types in SLP are handled by creating the appropriate number of | |
2891 | vectorized stmts for each SLP node. Hence, NCOPIES is always 1 in | |
2892 | case of SLP. */ | |
2893 | if (slp_node) | |
2894 | ncopies = 1; | |
2895 | else | |
2896 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits_in; | |
2897 | ||
2898 | gcc_assert (ncopies >= 1); | |
2899 | ||
ebfd146a IR |
2900 | op_type = TREE_CODE_LENGTH (code); |
2901 | if (op_type == binary_op) | |
2902 | { | |
2903 | op1 = gimple_assign_rhs2 (stmt); | |
a70d6342 | 2904 | if (!vect_is_simple_use (op1, loop_vinfo, NULL, &def_stmt, &def, &dt[1])) |
ebfd146a IR |
2905 | { |
2906 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2907 | fprintf (vect_dump, "use not simple."); | |
2908 | return false; | |
2909 | } | |
2910 | } | |
2911 | ||
2912 | /* Supportable by target? */ | |
b690cc0f | 2913 | if (!supportable_widening_operation (code, stmt, vectype_out, vectype_in, |
ebfd146a IR |
2914 | &decl1, &decl2, &code1, &code2, |
2915 | &multi_step_cvt, &interm_types)) | |
2916 | return false; | |
2917 | ||
2918 | /* Binary widening operation can only be supported directly by the | |
2919 | architecture. */ | |
2920 | gcc_assert (!(multi_step_cvt && op_type == binary_op)); | |
2921 | ||
ebfd146a IR |
2922 | if (!vec_stmt) /* transformation not required. */ |
2923 | { | |
2924 | STMT_VINFO_TYPE (stmt_info) = type_promotion_vec_info_type; | |
2925 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2926 | fprintf (vect_dump, "=== vectorizable_promotion ==="); | |
2927 | vect_model_simple_cost (stmt_info, 2*ncopies, dt, NULL); | |
2928 | return true; | |
2929 | } | |
2930 | ||
2931 | /** Transform. **/ | |
2932 | ||
2933 | if (vect_print_dump_info (REPORT_DETAILS)) | |
2934 | fprintf (vect_dump, "transform type promotion operation. ncopies = %d.", | |
2935 | ncopies); | |
2936 | ||
2937 | /* Handle def. */ | |
b8698a0f | 2938 | /* In case of multi-step promotion, we first generate promotion operations |
ebfd146a | 2939 | to the intermediate types, and then from that types to the final one. |
b8698a0f L |
2940 | We store vector destination in VEC_DSTS in the correct order for |
2941 | recursive creation of promotion operations in | |
ebfd146a IR |
2942 | vect_create_vectorized_promotion_stmts(). Vector destinations are created |
2943 | according to TYPES recieved from supportable_widening_operation(). */ | |
2944 | if (multi_step_cvt) | |
2945 | vec_dsts = VEC_alloc (tree, heap, multi_step_cvt + 1); | |
2946 | else | |
2947 | vec_dsts = VEC_alloc (tree, heap, 1); | |
2948 | ||
2949 | vec_dest = vect_create_destination_var (scalar_dest, vectype_out); | |
2950 | VEC_quick_push (tree, vec_dsts, vec_dest); | |
2951 | ||
2952 | if (multi_step_cvt) | |
2953 | { | |
2954 | for (i = VEC_length (tree, interm_types) - 1; | |
2955 | VEC_iterate (tree, interm_types, i, intermediate_type); i--) | |
2956 | { | |
2957 | vec_dest = vect_create_destination_var (scalar_dest, | |
2958 | intermediate_type); | |
2959 | VEC_quick_push (tree, vec_dsts, vec_dest); | |
2960 | } | |
2961 | } | |
b8698a0f | 2962 | |
ebfd146a IR |
2963 | if (!slp_node) |
2964 | { | |
b8698a0f | 2965 | vec_oprnds0 = VEC_alloc (tree, heap, |
ebfd146a IR |
2966 | (multi_step_cvt ? vect_pow2 (multi_step_cvt) : 1)); |
2967 | if (op_type == binary_op) | |
2968 | vec_oprnds1 = VEC_alloc (tree, heap, 1); | |
2969 | } | |
2970 | ||
2971 | /* In case the vectorization factor (VF) is bigger than the number | |
2972 | of elements that we can fit in a vectype (nunits), we have to generate | |
2973 | more than one vector stmt - i.e - we need to "unroll" the | |
2974 | vector stmt by a factor VF/nunits. */ | |
2975 | ||
2976 | prev_stmt_info = NULL; | |
2977 | for (j = 0; j < ncopies; j++) | |
2978 | { | |
2979 | /* Handle uses. */ | |
2980 | if (j == 0) | |
2981 | { | |
2982 | if (slp_node) | |
b5aeb3bb | 2983 | vect_get_slp_defs (slp_node, &vec_oprnds0, &vec_oprnds1, -1); |
ebfd146a IR |
2984 | else |
2985 | { | |
2986 | vec_oprnd0 = vect_get_vec_def_for_operand (op0, stmt, NULL); | |
2987 | VEC_quick_push (tree, vec_oprnds0, vec_oprnd0); | |
2988 | if (op_type == binary_op) | |
2989 | { | |
2990 | vec_oprnd1 = vect_get_vec_def_for_operand (op1, stmt, NULL); | |
2991 | VEC_quick_push (tree, vec_oprnds1, vec_oprnd1); | |
2992 | } | |
2993 | } | |
2994 | } | |
2995 | else | |
2996 | { | |
2997 | vec_oprnd0 = vect_get_vec_def_for_stmt_copy (dt[0], vec_oprnd0); | |
2998 | VEC_replace (tree, vec_oprnds0, 0, vec_oprnd0); | |
2999 | if (op_type == binary_op) | |
3000 | { | |
3001 | vec_oprnd1 = vect_get_vec_def_for_stmt_copy (dt[1], vec_oprnd1); | |
3002 | VEC_replace (tree, vec_oprnds1, 0, vec_oprnd1); | |
3003 | } | |
3004 | } | |
3005 | ||
3006 | /* Arguments are ready. Create the new vector stmts. */ | |
3007 | tmp_vec_dsts = VEC_copy (tree, heap, vec_dsts); | |
3008 | vect_create_vectorized_promotion_stmts (&vec_oprnds0, &vec_oprnds1, | |
b8698a0f | 3009 | multi_step_cvt, stmt, |
ebfd146a IR |
3010 | tmp_vec_dsts, |
3011 | gsi, slp_node, code1, code2, | |
3012 | decl1, decl2, op_type, | |
3013 | &prev_stmt_info); | |
3014 | } | |
3015 | ||
3016 | VEC_free (tree, heap, vec_dsts); | |
3017 | VEC_free (tree, heap, tmp_vec_dsts); | |
3018 | VEC_free (tree, heap, interm_types); | |
3019 | VEC_free (tree, heap, vec_oprnds0); | |
3020 | VEC_free (tree, heap, vec_oprnds1); | |
3021 | ||
3022 | *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info); | |
3023 | return true; | |
3024 | } | |
3025 | ||
3026 | ||
3027 | /* Function vectorizable_store. | |
3028 | ||
b8698a0f L |
3029 | Check if STMT defines a non scalar data-ref (array/pointer/structure) that |
3030 | can be vectorized. | |
3031 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
ebfd146a IR |
3032 | stmt to replace it, put it in VEC_STMT, and insert it at BSI. |
3033 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
3034 | ||
3035 | static bool | |
3036 | vectorizable_store (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt, | |
3037 | slp_tree slp_node) | |
3038 | { | |
3039 | tree scalar_dest; | |
3040 | tree data_ref; | |
3041 | tree op; | |
3042 | tree vec_oprnd = NULL_TREE; | |
3043 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
3044 | struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info), *first_dr = NULL; | |
3045 | tree vectype = STMT_VINFO_VECTYPE (stmt_info); | |
3046 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); | |
a70d6342 | 3047 | struct loop *loop = NULL; |
ebfd146a IR |
3048 | enum machine_mode vec_mode; |
3049 | tree dummy; | |
3050 | enum dr_alignment_support alignment_support_scheme; | |
3051 | tree def; | |
3052 | gimple def_stmt; | |
3053 | enum vect_def_type dt; | |
3054 | stmt_vec_info prev_stmt_info = NULL; | |
3055 | tree dataref_ptr = NULL_TREE; | |
3056 | int nunits = TYPE_VECTOR_SUBPARTS (vectype); | |
3057 | int ncopies; | |
3058 | int j; | |
3059 | gimple next_stmt, first_stmt = NULL; | |
3060 | bool strided_store = false; | |
3061 | unsigned int group_size, i; | |
3062 | VEC(tree,heap) *dr_chain = NULL, *oprnds = NULL, *result_chain = NULL; | |
3063 | bool inv_p; | |
3064 | VEC(tree,heap) *vec_oprnds = NULL; | |
3065 | bool slp = (slp_node != NULL); | |
ebfd146a | 3066 | unsigned int vec_num; |
a70d6342 IR |
3067 | bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_info); |
3068 | ||
3069 | if (loop_vinfo) | |
3070 | loop = LOOP_VINFO_LOOP (loop_vinfo); | |
ebfd146a IR |
3071 | |
3072 | /* Multiple types in SLP are handled by creating the appropriate number of | |
3073 | vectorized stmts for each SLP node. Hence, NCOPIES is always 1 in | |
3074 | case of SLP. */ | |
3075 | if (slp) | |
3076 | ncopies = 1; | |
3077 | else | |
3078 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits; | |
3079 | ||
3080 | gcc_assert (ncopies >= 1); | |
3081 | ||
3082 | /* FORNOW. This restriction should be relaxed. */ | |
a70d6342 | 3083 | if (loop && nested_in_vect_loop_p (loop, stmt) && ncopies > 1) |
ebfd146a IR |
3084 | { |
3085 | if (vect_print_dump_info (REPORT_DETAILS)) | |
3086 | fprintf (vect_dump, "multiple types in nested loop."); | |
3087 | return false; | |
3088 | } | |
3089 | ||
a70d6342 | 3090 | if (!STMT_VINFO_RELEVANT_P (stmt_info) && !bb_vinfo) |
ebfd146a IR |
3091 | return false; |
3092 | ||
8644a673 | 3093 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def) |
ebfd146a IR |
3094 | return false; |
3095 | ||
3096 | /* Is vectorizable store? */ | |
3097 | ||
3098 | if (!is_gimple_assign (stmt)) | |
3099 | return false; | |
3100 | ||
3101 | scalar_dest = gimple_assign_lhs (stmt); | |
3102 | if (TREE_CODE (scalar_dest) != ARRAY_REF | |
3103 | && TREE_CODE (scalar_dest) != INDIRECT_REF | |
e9dbe7bb IR |
3104 | && TREE_CODE (scalar_dest) != COMPONENT_REF |
3105 | && TREE_CODE (scalar_dest) != IMAGPART_EXPR | |
70f34814 RG |
3106 | && TREE_CODE (scalar_dest) != REALPART_EXPR |
3107 | && TREE_CODE (scalar_dest) != MEM_REF) | |
ebfd146a IR |
3108 | return false; |
3109 | ||
3110 | gcc_assert (gimple_assign_single_p (stmt)); | |
3111 | op = gimple_assign_rhs1 (stmt); | |
a70d6342 | 3112 | if (!vect_is_simple_use (op, loop_vinfo, bb_vinfo, &def_stmt, &def, &dt)) |
ebfd146a IR |
3113 | { |
3114 | if (vect_print_dump_info (REPORT_DETAILS)) | |
3115 | fprintf (vect_dump, "use not simple."); | |
3116 | return false; | |
3117 | } | |
3118 | ||
3119 | /* The scalar rhs type needs to be trivially convertible to the vector | |
3120 | component type. This should always be the case. */ | |
3121 | if (!useless_type_conversion_p (TREE_TYPE (vectype), TREE_TYPE (op))) | |
b8698a0f | 3122 | { |
ebfd146a IR |
3123 | if (vect_print_dump_info (REPORT_DETAILS)) |
3124 | fprintf (vect_dump, "??? operands of different types"); | |
3125 | return false; | |
3126 | } | |
3127 | ||
3128 | vec_mode = TYPE_MODE (vectype); | |
3129 | /* FORNOW. In some cases can vectorize even if data-type not supported | |
3130 | (e.g. - array initialization with 0). */ | |
947131ba | 3131 | if (optab_handler (mov_optab, vec_mode) == CODE_FOR_nothing) |
ebfd146a IR |
3132 | return false; |
3133 | ||
3134 | if (!STMT_VINFO_DATA_REF (stmt_info)) | |
3135 | return false; | |
3136 | ||
3137 | if (STMT_VINFO_STRIDED_ACCESS (stmt_info)) | |
3138 | { | |
3139 | strided_store = true; | |
3140 | first_stmt = DR_GROUP_FIRST_DR (stmt_info); | |
3141 | if (!vect_strided_store_supported (vectype) | |
3142 | && !PURE_SLP_STMT (stmt_info) && !slp) | |
3143 | return false; | |
b8698a0f | 3144 | |
ebfd146a IR |
3145 | if (first_stmt == stmt) |
3146 | { | |
3147 | /* STMT is the leader of the group. Check the operands of all the | |
3148 | stmts of the group. */ | |
3149 | next_stmt = DR_GROUP_NEXT_DR (stmt_info); | |
3150 | while (next_stmt) | |
3151 | { | |
3152 | gcc_assert (gimple_assign_single_p (next_stmt)); | |
3153 | op = gimple_assign_rhs1 (next_stmt); | |
b8698a0f | 3154 | if (!vect_is_simple_use (op, loop_vinfo, bb_vinfo, &def_stmt, |
a70d6342 | 3155 | &def, &dt)) |
ebfd146a IR |
3156 | { |
3157 | if (vect_print_dump_info (REPORT_DETAILS)) | |
3158 | fprintf (vect_dump, "use not simple."); | |
3159 | return false; | |
3160 | } | |
3161 | next_stmt = DR_GROUP_NEXT_DR (vinfo_for_stmt (next_stmt)); | |
3162 | } | |
3163 | } | |
3164 | } | |
3165 | ||
3166 | if (!vec_stmt) /* transformation not required. */ | |
3167 | { | |
3168 | STMT_VINFO_TYPE (stmt_info) = store_vec_info_type; | |
3169 | vect_model_store_cost (stmt_info, ncopies, dt, NULL); | |
3170 | return true; | |
3171 | } | |
3172 | ||
3173 | /** Transform. **/ | |
3174 | ||
3175 | if (strided_store) | |
3176 | { | |
3177 | first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (first_stmt)); | |
3178 | group_size = DR_GROUP_SIZE (vinfo_for_stmt (first_stmt)); | |
3179 | ||
3180 | DR_GROUP_STORE_COUNT (vinfo_for_stmt (first_stmt))++; | |
3181 | ||
3182 | /* FORNOW */ | |
a70d6342 | 3183 | gcc_assert (!loop || !nested_in_vect_loop_p (loop, stmt)); |
ebfd146a IR |
3184 | |
3185 | /* We vectorize all the stmts of the interleaving group when we | |
3186 | reach the last stmt in the group. */ | |
b8698a0f | 3187 | if (DR_GROUP_STORE_COUNT (vinfo_for_stmt (first_stmt)) |
ebfd146a IR |
3188 | < DR_GROUP_SIZE (vinfo_for_stmt (first_stmt)) |
3189 | && !slp) | |
3190 | { | |
3191 | *vec_stmt = NULL; | |
3192 | return true; | |
3193 | } | |
3194 | ||
3195 | if (slp) | |
4b5caab7 IR |
3196 | { |
3197 | strided_store = false; | |
3198 | /* VEC_NUM is the number of vect stmts to be created for this | |
3199 | group. */ | |
3200 | vec_num = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node); | |
3201 | first_stmt = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (slp_node), 0); | |
3202 | first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (first_stmt)); | |
3203 | } | |
ebfd146a | 3204 | else |
4b5caab7 IR |
3205 | /* VEC_NUM is the number of vect stmts to be created for this |
3206 | group. */ | |
ebfd146a IR |
3207 | vec_num = group_size; |
3208 | } | |
b8698a0f | 3209 | else |
ebfd146a IR |
3210 | { |
3211 | first_stmt = stmt; | |
3212 | first_dr = dr; | |
3213 | group_size = vec_num = 1; | |
ebfd146a | 3214 | } |
b8698a0f | 3215 | |
ebfd146a IR |
3216 | if (vect_print_dump_info (REPORT_DETAILS)) |
3217 | fprintf (vect_dump, "transform store. ncopies = %d",ncopies); | |
3218 | ||
3219 | dr_chain = VEC_alloc (tree, heap, group_size); | |
3220 | oprnds = VEC_alloc (tree, heap, group_size); | |
3221 | ||
720f5239 | 3222 | alignment_support_scheme = vect_supportable_dr_alignment (first_dr, false); |
ebfd146a | 3223 | gcc_assert (alignment_support_scheme); |
ebfd146a IR |
3224 | |
3225 | /* In case the vectorization factor (VF) is bigger than the number | |
3226 | of elements that we can fit in a vectype (nunits), we have to generate | |
3227 | more than one vector stmt - i.e - we need to "unroll" the | |
b8698a0f | 3228 | vector stmt by a factor VF/nunits. For more details see documentation in |
ebfd146a IR |
3229 | vect_get_vec_def_for_copy_stmt. */ |
3230 | ||
3231 | /* In case of interleaving (non-unit strided access): | |
3232 | ||
3233 | S1: &base + 2 = x2 | |
3234 | S2: &base = x0 | |
3235 | S3: &base + 1 = x1 | |
3236 | S4: &base + 3 = x3 | |
3237 | ||
3238 | We create vectorized stores starting from base address (the access of the | |
3239 | first stmt in the chain (S2 in the above example), when the last store stmt | |
3240 | of the chain (S4) is reached: | |
3241 | ||
3242 | VS1: &base = vx2 | |
3243 | VS2: &base + vec_size*1 = vx0 | |
3244 | VS3: &base + vec_size*2 = vx1 | |
3245 | VS4: &base + vec_size*3 = vx3 | |
3246 | ||
3247 | Then permutation statements are generated: | |
3248 | ||
3249 | VS5: vx5 = VEC_INTERLEAVE_HIGH_EXPR < vx0, vx3 > | |
3250 | VS6: vx6 = VEC_INTERLEAVE_LOW_EXPR < vx0, vx3 > | |
3251 | ... | |
b8698a0f | 3252 | |
ebfd146a IR |
3253 | And they are put in STMT_VINFO_VEC_STMT of the corresponding scalar stmts |
3254 | (the order of the data-refs in the output of vect_permute_store_chain | |
3255 | corresponds to the order of scalar stmts in the interleaving chain - see | |
3256 | the documentation of vect_permute_store_chain()). | |
3257 | ||
3258 | In case of both multiple types and interleaving, above vector stores and | |
3259 | permutation stmts are created for every copy. The result vector stmts are | |
3260 | put in STMT_VINFO_VEC_STMT for the first copy and in the corresponding | |
b8698a0f | 3261 | STMT_VINFO_RELATED_STMT for the next copies. |
ebfd146a IR |
3262 | */ |
3263 | ||
3264 | prev_stmt_info = NULL; | |
3265 | for (j = 0; j < ncopies; j++) | |
3266 | { | |
3267 | gimple new_stmt; | |
3268 | gimple ptr_incr; | |
3269 | ||
3270 | if (j == 0) | |
3271 | { | |
3272 | if (slp) | |
3273 | { | |
3274 | /* Get vectorized arguments for SLP_NODE. */ | |
b5aeb3bb | 3275 | vect_get_slp_defs (slp_node, &vec_oprnds, NULL, -1); |
ebfd146a IR |
3276 | |
3277 | vec_oprnd = VEC_index (tree, vec_oprnds, 0); | |
3278 | } | |
3279 | else | |
3280 | { | |
b8698a0f L |
3281 | /* For interleaved stores we collect vectorized defs for all the |
3282 | stores in the group in DR_CHAIN and OPRNDS. DR_CHAIN is then | |
3283 | used as an input to vect_permute_store_chain(), and OPRNDS as | |
ebfd146a IR |
3284 | an input to vect_get_vec_def_for_stmt_copy() for the next copy. |
3285 | ||
3286 | If the store is not strided, GROUP_SIZE is 1, and DR_CHAIN and | |
3287 | OPRNDS are of size 1. */ | |
b8698a0f | 3288 | next_stmt = first_stmt; |
ebfd146a IR |
3289 | for (i = 0; i < group_size; i++) |
3290 | { | |
b8698a0f L |
3291 | /* Since gaps are not supported for interleaved stores, |
3292 | GROUP_SIZE is the exact number of stmts in the chain. | |
3293 | Therefore, NEXT_STMT can't be NULL_TREE. In case that | |
3294 | there is no interleaving, GROUP_SIZE is 1, and only one | |
ebfd146a IR |
3295 | iteration of the loop will be executed. */ |
3296 | gcc_assert (next_stmt | |
3297 | && gimple_assign_single_p (next_stmt)); | |
3298 | op = gimple_assign_rhs1 (next_stmt); | |
3299 | ||
b8698a0f | 3300 | vec_oprnd = vect_get_vec_def_for_operand (op, next_stmt, |
ebfd146a | 3301 | NULL); |
b8698a0f L |
3302 | VEC_quick_push(tree, dr_chain, vec_oprnd); |
3303 | VEC_quick_push(tree, oprnds, vec_oprnd); | |
ebfd146a IR |
3304 | next_stmt = DR_GROUP_NEXT_DR (vinfo_for_stmt (next_stmt)); |
3305 | } | |
3306 | } | |
3307 | ||
3308 | /* We should have catched mismatched types earlier. */ | |
3309 | gcc_assert (useless_type_conversion_p (vectype, | |
3310 | TREE_TYPE (vec_oprnd))); | |
b8698a0f L |
3311 | dataref_ptr = vect_create_data_ref_ptr (first_stmt, NULL, NULL_TREE, |
3312 | &dummy, &ptr_incr, false, | |
5006671f | 3313 | &inv_p); |
a70d6342 | 3314 | gcc_assert (bb_vinfo || !inv_p); |
ebfd146a | 3315 | } |
b8698a0f | 3316 | else |
ebfd146a | 3317 | { |
b8698a0f L |
3318 | /* For interleaved stores we created vectorized defs for all the |
3319 | defs stored in OPRNDS in the previous iteration (previous copy). | |
3320 | DR_CHAIN is then used as an input to vect_permute_store_chain(), | |
ebfd146a IR |
3321 | and OPRNDS as an input to vect_get_vec_def_for_stmt_copy() for the |
3322 | next copy. | |
3323 | If the store is not strided, GROUP_SIZE is 1, and DR_CHAIN and | |
3324 | OPRNDS are of size 1. */ | |
3325 | for (i = 0; i < group_size; i++) | |
3326 | { | |
3327 | op = VEC_index (tree, oprnds, i); | |
b8698a0f | 3328 | vect_is_simple_use (op, loop_vinfo, bb_vinfo, &def_stmt, &def, |
a70d6342 | 3329 | &dt); |
b8698a0f | 3330 | vec_oprnd = vect_get_vec_def_for_stmt_copy (dt, op); |
ebfd146a IR |
3331 | VEC_replace(tree, dr_chain, i, vec_oprnd); |
3332 | VEC_replace(tree, oprnds, i, vec_oprnd); | |
3333 | } | |
b8698a0f | 3334 | dataref_ptr = |
ebfd146a IR |
3335 | bump_vector_ptr (dataref_ptr, ptr_incr, gsi, stmt, NULL_TREE); |
3336 | } | |
3337 | ||
3338 | if (strided_store) | |
3339 | { | |
b8698a0f | 3340 | result_chain = VEC_alloc (tree, heap, group_size); |
ebfd146a IR |
3341 | /* Permute. */ |
3342 | if (!vect_permute_store_chain (dr_chain, group_size, stmt, gsi, | |
3343 | &result_chain)) | |
3344 | return false; | |
3345 | } | |
3346 | ||
3347 | next_stmt = first_stmt; | |
3348 | for (i = 0; i < vec_num; i++) | |
3349 | { | |
be1ac4ec RG |
3350 | struct ptr_info_def *pi; |
3351 | ||
ebfd146a IR |
3352 | if (i > 0) |
3353 | /* Bump the vector pointer. */ | |
3354 | dataref_ptr = bump_vector_ptr (dataref_ptr, ptr_incr, gsi, stmt, | |
3355 | NULL_TREE); | |
3356 | ||
3357 | if (slp) | |
3358 | vec_oprnd = VEC_index (tree, vec_oprnds, i); | |
3359 | else if (strided_store) | |
b8698a0f | 3360 | /* For strided stores vectorized defs are interleaved in |
ebfd146a IR |
3361 | vect_permute_store_chain(). */ |
3362 | vec_oprnd = VEC_index (tree, result_chain, i); | |
3363 | ||
be1ac4ec RG |
3364 | data_ref = build2 (MEM_REF, TREE_TYPE (vec_oprnd), dataref_ptr, |
3365 | build_int_cst (reference_alias_ptr_type | |
3366 | (DR_REF (first_dr)), 0)); | |
3367 | pi = get_ptr_info (dataref_ptr); | |
3368 | pi->align = TYPE_ALIGN_UNIT (vectype); | |
8f439681 | 3369 | if (aligned_access_p (first_dr)) |
be1ac4ec RG |
3370 | pi->misalign = 0; |
3371 | else if (DR_MISALIGNMENT (first_dr) == -1) | |
3372 | { | |
3373 | TREE_TYPE (data_ref) | |
3374 | = build_aligned_type (TREE_TYPE (data_ref), | |
3375 | TYPE_ALIGN (TREE_TYPE (vectype))); | |
3376 | pi->align = TYPE_ALIGN_UNIT (TREE_TYPE (vectype)); | |
3377 | pi->misalign = 0; | |
3378 | } | |
3379 | else | |
3380 | { | |
3381 | TREE_TYPE (data_ref) | |
3382 | = build_aligned_type (TREE_TYPE (data_ref), | |
3383 | TYPE_ALIGN (TREE_TYPE (vectype))); | |
3384 | pi->misalign = DR_MISALIGNMENT (first_dr); | |
3385 | } | |
8f439681 | 3386 | |
ebfd146a IR |
3387 | /* Arguments are ready. Create the new vector stmt. */ |
3388 | new_stmt = gimple_build_assign (data_ref, vec_oprnd); | |
3389 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
3390 | mark_symbols_for_renaming (new_stmt); | |
3391 | ||
3392 | if (slp) | |
3393 | continue; | |
b8698a0f | 3394 | |
ebfd146a IR |
3395 | if (j == 0) |
3396 | STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt; | |
3397 | else | |
3398 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
3399 | ||
3400 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
3401 | next_stmt = DR_GROUP_NEXT_DR (vinfo_for_stmt (next_stmt)); | |
3402 | if (!next_stmt) | |
3403 | break; | |
3404 | } | |
3405 | } | |
3406 | ||
b8698a0f L |
3407 | VEC_free (tree, heap, dr_chain); |
3408 | VEC_free (tree, heap, oprnds); | |
ebfd146a | 3409 | if (result_chain) |
b8698a0f | 3410 | VEC_free (tree, heap, result_chain); |
ebfd146a IR |
3411 | |
3412 | return true; | |
3413 | } | |
3414 | ||
3415 | /* vectorizable_load. | |
3416 | ||
b8698a0f L |
3417 | Check if STMT reads a non scalar data-ref (array/pointer/structure) that |
3418 | can be vectorized. | |
3419 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
ebfd146a IR |
3420 | stmt to replace it, put it in VEC_STMT, and insert it at BSI. |
3421 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
3422 | ||
3423 | static bool | |
3424 | vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt, | |
3425 | slp_tree slp_node, slp_instance slp_node_instance) | |
3426 | { | |
3427 | tree scalar_dest; | |
3428 | tree vec_dest = NULL; | |
3429 | tree data_ref = NULL; | |
3430 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
b8698a0f | 3431 | stmt_vec_info prev_stmt_info; |
ebfd146a | 3432 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); |
a70d6342 | 3433 | struct loop *loop = NULL; |
ebfd146a | 3434 | struct loop *containing_loop = (gimple_bb (stmt))->loop_father; |
a70d6342 | 3435 | bool nested_in_vect_loop = false; |
ebfd146a IR |
3436 | struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info), *first_dr; |
3437 | tree vectype = STMT_VINFO_VECTYPE (stmt_info); | |
3438 | tree new_temp; | |
947131ba | 3439 | enum machine_mode mode; |
ebfd146a IR |
3440 | gimple new_stmt = NULL; |
3441 | tree dummy; | |
3442 | enum dr_alignment_support alignment_support_scheme; | |
3443 | tree dataref_ptr = NULL_TREE; | |
3444 | gimple ptr_incr; | |
3445 | int nunits = TYPE_VECTOR_SUBPARTS (vectype); | |
3446 | int ncopies; | |
3447 | int i, j, group_size; | |
3448 | tree msq = NULL_TREE, lsq; | |
3449 | tree offset = NULL_TREE; | |
3450 | tree realignment_token = NULL_TREE; | |
3451 | gimple phi = NULL; | |
3452 | VEC(tree,heap) *dr_chain = NULL; | |
3453 | bool strided_load = false; | |
3454 | gimple first_stmt; | |
3455 | tree scalar_type; | |
3456 | bool inv_p; | |
3457 | bool compute_in_loop = false; | |
3458 | struct loop *at_loop; | |
3459 | int vec_num; | |
3460 | bool slp = (slp_node != NULL); | |
3461 | bool slp_perm = false; | |
3462 | enum tree_code code; | |
a70d6342 IR |
3463 | bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_info); |
3464 | int vf; | |
3465 | ||
3466 | if (loop_vinfo) | |
3467 | { | |
3468 | loop = LOOP_VINFO_LOOP (loop_vinfo); | |
3469 | nested_in_vect_loop = nested_in_vect_loop_p (loop, stmt); | |
3470 | vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo); | |
3471 | } | |
3472 | else | |
3533e503 | 3473 | vf = 1; |
ebfd146a IR |
3474 | |
3475 | /* Multiple types in SLP are handled by creating the appropriate number of | |
3476 | vectorized stmts for each SLP node. Hence, NCOPIES is always 1 in | |
3477 | case of SLP. */ | |
3478 | if (slp) | |
3479 | ncopies = 1; | |
3480 | else | |
3481 | ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits; | |
3482 | ||
3483 | gcc_assert (ncopies >= 1); | |
3484 | ||
3485 | /* FORNOW. This restriction should be relaxed. */ | |
3486 | if (nested_in_vect_loop && ncopies > 1) | |
3487 | { | |
3488 | if (vect_print_dump_info (REPORT_DETAILS)) | |
3489 | fprintf (vect_dump, "multiple types in nested loop."); | |
3490 | return false; | |
3491 | } | |
3492 | ||
a70d6342 | 3493 | if (!STMT_VINFO_RELEVANT_P (stmt_info) && !bb_vinfo) |
ebfd146a IR |
3494 | return false; |
3495 | ||
8644a673 | 3496 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def) |
ebfd146a IR |
3497 | return false; |
3498 | ||
3499 | /* Is vectorizable load? */ | |
3500 | if (!is_gimple_assign (stmt)) | |
3501 | return false; | |
3502 | ||
3503 | scalar_dest = gimple_assign_lhs (stmt); | |
3504 | if (TREE_CODE (scalar_dest) != SSA_NAME) | |
3505 | return false; | |
3506 | ||
3507 | code = gimple_assign_rhs_code (stmt); | |
3508 | if (code != ARRAY_REF | |
3509 | && code != INDIRECT_REF | |
e9dbe7bb IR |
3510 | && code != COMPONENT_REF |
3511 | && code != IMAGPART_EXPR | |
70f34814 RG |
3512 | && code != REALPART_EXPR |
3513 | && code != MEM_REF) | |
ebfd146a IR |
3514 | return false; |
3515 | ||
3516 | if (!STMT_VINFO_DATA_REF (stmt_info)) | |
3517 | return false; | |
3518 | ||
3519 | scalar_type = TREE_TYPE (DR_REF (dr)); | |
947131ba | 3520 | mode = TYPE_MODE (vectype); |
ebfd146a IR |
3521 | |
3522 | /* FORNOW. In some cases can vectorize even if data-type not supported | |
3523 | (e.g. - data copies). */ | |
947131ba | 3524 | if (optab_handler (mov_optab, mode) == CODE_FOR_nothing) |
ebfd146a IR |
3525 | { |
3526 | if (vect_print_dump_info (REPORT_DETAILS)) | |
3527 | fprintf (vect_dump, "Aligned load, but unsupported type."); | |
3528 | return false; | |
3529 | } | |
3530 | ||
3531 | /* The vector component type needs to be trivially convertible to the | |
3532 | scalar lhs. This should always be the case. */ | |
3533 | if (!useless_type_conversion_p (TREE_TYPE (scalar_dest), TREE_TYPE (vectype))) | |
b8698a0f | 3534 | { |
ebfd146a IR |
3535 | if (vect_print_dump_info (REPORT_DETAILS)) |
3536 | fprintf (vect_dump, "??? operands of different types"); | |
3537 | return false; | |
3538 | } | |
3539 | ||
3540 | /* Check if the load is a part of an interleaving chain. */ | |
3541 | if (STMT_VINFO_STRIDED_ACCESS (stmt_info)) | |
3542 | { | |
3543 | strided_load = true; | |
3544 | /* FORNOW */ | |
3545 | gcc_assert (! nested_in_vect_loop); | |
3546 | ||
3547 | /* Check if interleaving is supported. */ | |
3548 | if (!vect_strided_load_supported (vectype) | |
3549 | && !PURE_SLP_STMT (stmt_info) && !slp) | |
3550 | return false; | |
3551 | } | |
3552 | ||
3553 | if (!vec_stmt) /* transformation not required. */ | |
3554 | { | |
3555 | STMT_VINFO_TYPE (stmt_info) = load_vec_info_type; | |
3556 | vect_model_load_cost (stmt_info, ncopies, NULL); | |
3557 | return true; | |
3558 | } | |
3559 | ||
3560 | if (vect_print_dump_info (REPORT_DETAILS)) | |
3561 | fprintf (vect_dump, "transform load."); | |
3562 | ||
3563 | /** Transform. **/ | |
3564 | ||
3565 | if (strided_load) | |
3566 | { | |
3567 | first_stmt = DR_GROUP_FIRST_DR (stmt_info); | |
3568 | /* Check if the chain of loads is already vectorized. */ | |
3569 | if (STMT_VINFO_VEC_STMT (vinfo_for_stmt (first_stmt))) | |
3570 | { | |
3571 | *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info); | |
3572 | return true; | |
3573 | } | |
3574 | first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (first_stmt)); | |
3575 | group_size = DR_GROUP_SIZE (vinfo_for_stmt (first_stmt)); | |
3576 | ||
3577 | /* VEC_NUM is the number of vect stmts to be created for this group. */ | |
3578 | if (slp) | |
3579 | { | |
3580 | strided_load = false; | |
3581 | vec_num = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node); | |
a70d6342 IR |
3582 | if (SLP_INSTANCE_LOAD_PERMUTATION (slp_node_instance)) |
3583 | slp_perm = true; | |
3584 | } | |
ebfd146a IR |
3585 | else |
3586 | vec_num = group_size; | |
3587 | ||
3588 | dr_chain = VEC_alloc (tree, heap, vec_num); | |
3589 | } | |
3590 | else | |
3591 | { | |
3592 | first_stmt = stmt; | |
3593 | first_dr = dr; | |
3594 | group_size = vec_num = 1; | |
3595 | } | |
3596 | ||
720f5239 | 3597 | alignment_support_scheme = vect_supportable_dr_alignment (first_dr, false); |
ebfd146a IR |
3598 | gcc_assert (alignment_support_scheme); |
3599 | ||
3600 | /* In case the vectorization factor (VF) is bigger than the number | |
3601 | of elements that we can fit in a vectype (nunits), we have to generate | |
3602 | more than one vector stmt - i.e - we need to "unroll" the | |
3603 | vector stmt by a factor VF/nunits. In doing so, we record a pointer | |
3604 | from one copy of the vector stmt to the next, in the field | |
3605 | STMT_VINFO_RELATED_STMT. This is necessary in order to allow following | |
3606 | stages to find the correct vector defs to be used when vectorizing | |
3607 | stmts that use the defs of the current stmt. The example below illustrates | |
3608 | the vectorization process when VF=16 and nunits=4 (i.e - we need to create | |
3609 | 4 vectorized stmts): | |
3610 | ||
3611 | before vectorization: | |
3612 | RELATED_STMT VEC_STMT | |
3613 | S1: x = memref - - | |
3614 | S2: z = x + 1 - - | |
3615 | ||
3616 | step 1: vectorize stmt S1: | |
3617 | We first create the vector stmt VS1_0, and, as usual, record a | |
3618 | pointer to it in the STMT_VINFO_VEC_STMT of the scalar stmt S1. | |
3619 | Next, we create the vector stmt VS1_1, and record a pointer to | |
3620 | it in the STMT_VINFO_RELATED_STMT of the vector stmt VS1_0. | |
3621 | Similarly, for VS1_2 and VS1_3. This is the resulting chain of | |
3622 | stmts and pointers: | |
3623 | RELATED_STMT VEC_STMT | |
3624 | VS1_0: vx0 = memref0 VS1_1 - | |
3625 | VS1_1: vx1 = memref1 VS1_2 - | |
3626 | VS1_2: vx2 = memref2 VS1_3 - | |
3627 | VS1_3: vx3 = memref3 - - | |
3628 | S1: x = load - VS1_0 | |
3629 | S2: z = x + 1 - - | |
3630 | ||
b8698a0f L |
3631 | See in documentation in vect_get_vec_def_for_stmt_copy for how the |
3632 | information we recorded in RELATED_STMT field is used to vectorize | |
ebfd146a IR |
3633 | stmt S2. */ |
3634 | ||
3635 | /* In case of interleaving (non-unit strided access): | |
3636 | ||
3637 | S1: x2 = &base + 2 | |
3638 | S2: x0 = &base | |
3639 | S3: x1 = &base + 1 | |
3640 | S4: x3 = &base + 3 | |
3641 | ||
b8698a0f | 3642 | Vectorized loads are created in the order of memory accesses |
ebfd146a IR |
3643 | starting from the access of the first stmt of the chain: |
3644 | ||
3645 | VS1: vx0 = &base | |
3646 | VS2: vx1 = &base + vec_size*1 | |
3647 | VS3: vx3 = &base + vec_size*2 | |
3648 | VS4: vx4 = &base + vec_size*3 | |
3649 | ||
3650 | Then permutation statements are generated: | |
3651 | ||
3652 | VS5: vx5 = VEC_EXTRACT_EVEN_EXPR < vx0, vx1 > | |
3653 | VS6: vx6 = VEC_EXTRACT_ODD_EXPR < vx0, vx1 > | |
3654 | ... | |
3655 | ||
3656 | And they are put in STMT_VINFO_VEC_STMT of the corresponding scalar stmts | |
3657 | (the order of the data-refs in the output of vect_permute_load_chain | |
3658 | corresponds to the order of scalar stmts in the interleaving chain - see | |
3659 | the documentation of vect_permute_load_chain()). | |
3660 | The generation of permutation stmts and recording them in | |
3661 | STMT_VINFO_VEC_STMT is done in vect_transform_strided_load(). | |
3662 | ||
b8698a0f | 3663 | In case of both multiple types and interleaving, the vector loads and |
ebfd146a IR |
3664 | permutation stmts above are created for every copy. The result vector stmts |
3665 | are put in STMT_VINFO_VEC_STMT for the first copy and in the corresponding | |
3666 | STMT_VINFO_RELATED_STMT for the next copies. */ | |
3667 | ||
3668 | /* If the data reference is aligned (dr_aligned) or potentially unaligned | |
3669 | on a target that supports unaligned accesses (dr_unaligned_supported) | |
3670 | we generate the following code: | |
3671 | p = initial_addr; | |
3672 | indx = 0; | |
3673 | loop { | |
3674 | p = p + indx * vectype_size; | |
3675 | vec_dest = *(p); | |
3676 | indx = indx + 1; | |
3677 | } | |
3678 | ||
3679 | Otherwise, the data reference is potentially unaligned on a target that | |
b8698a0f | 3680 | does not support unaligned accesses (dr_explicit_realign_optimized) - |
ebfd146a IR |
3681 | then generate the following code, in which the data in each iteration is |
3682 | obtained by two vector loads, one from the previous iteration, and one | |
3683 | from the current iteration: | |
3684 | p1 = initial_addr; | |
3685 | msq_init = *(floor(p1)) | |
3686 | p2 = initial_addr + VS - 1; | |
3687 | realignment_token = call target_builtin; | |
3688 | indx = 0; | |
3689 | loop { | |
3690 | p2 = p2 + indx * vectype_size | |
3691 | lsq = *(floor(p2)) | |
3692 | vec_dest = realign_load (msq, lsq, realignment_token) | |
3693 | indx = indx + 1; | |
3694 | msq = lsq; | |
3695 | } */ | |
3696 | ||
3697 | /* If the misalignment remains the same throughout the execution of the | |
3698 | loop, we can create the init_addr and permutation mask at the loop | |
3699 | preheader. Otherwise, it needs to be created inside the loop. | |
3700 | This can only occur when vectorizing memory accesses in the inner-loop | |
3701 | nested within an outer-loop that is being vectorized. */ | |
3702 | ||
a70d6342 | 3703 | if (loop && nested_in_vect_loop_p (loop, stmt) |
ebfd146a IR |
3704 | && (TREE_INT_CST_LOW (DR_STEP (dr)) |
3705 | % GET_MODE_SIZE (TYPE_MODE (vectype)) != 0)) | |
3706 | { | |
3707 | gcc_assert (alignment_support_scheme != dr_explicit_realign_optimized); | |
3708 | compute_in_loop = true; | |
3709 | } | |
3710 | ||
3711 | if ((alignment_support_scheme == dr_explicit_realign_optimized | |
3712 | || alignment_support_scheme == dr_explicit_realign) | |
3713 | && !compute_in_loop) | |
3714 | { | |
3715 | msq = vect_setup_realignment (first_stmt, gsi, &realignment_token, | |
3716 | alignment_support_scheme, NULL_TREE, | |
3717 | &at_loop); | |
3718 | if (alignment_support_scheme == dr_explicit_realign_optimized) | |
3719 | { | |
3720 | phi = SSA_NAME_DEF_STMT (msq); | |
3721 | offset = size_int (TYPE_VECTOR_SUBPARTS (vectype) - 1); | |
3722 | } | |
3723 | } | |
3724 | else | |
3725 | at_loop = loop; | |
3726 | ||
3727 | prev_stmt_info = NULL; | |
3728 | for (j = 0; j < ncopies; j++) | |
b8698a0f | 3729 | { |
ebfd146a IR |
3730 | /* 1. Create the vector pointer update chain. */ |
3731 | if (j == 0) | |
3732 | dataref_ptr = vect_create_data_ref_ptr (first_stmt, | |
b8698a0f L |
3733 | at_loop, offset, |
3734 | &dummy, &ptr_incr, false, | |
5006671f | 3735 | &inv_p); |
ebfd146a | 3736 | else |
b8698a0f | 3737 | dataref_ptr = |
ebfd146a IR |
3738 | bump_vector_ptr (dataref_ptr, ptr_incr, gsi, stmt, NULL_TREE); |
3739 | ||
3740 | for (i = 0; i < vec_num; i++) | |
3741 | { | |
3742 | if (i > 0) | |
3743 | dataref_ptr = bump_vector_ptr (dataref_ptr, ptr_incr, gsi, stmt, | |
3744 | NULL_TREE); | |
3745 | ||
3746 | /* 2. Create the vector-load in the loop. */ | |
3747 | switch (alignment_support_scheme) | |
3748 | { | |
3749 | case dr_aligned: | |
ebfd146a IR |
3750 | case dr_unaligned_supported: |
3751 | { | |
be1ac4ec RG |
3752 | struct ptr_info_def *pi; |
3753 | data_ref | |
3754 | = build2 (MEM_REF, vectype, dataref_ptr, | |
3755 | build_int_cst (reference_alias_ptr_type | |
3756 | (DR_REF (first_dr)), 0)); | |
3757 | pi = get_ptr_info (dataref_ptr); | |
3758 | pi->align = TYPE_ALIGN_UNIT (vectype); | |
3759 | if (alignment_support_scheme == dr_aligned) | |
3760 | { | |
3761 | gcc_assert (aligned_access_p (first_dr)); | |
3762 | pi->misalign = 0; | |
3763 | } | |
3764 | else if (DR_MISALIGNMENT (first_dr) == -1) | |
3765 | { | |
3766 | TREE_TYPE (data_ref) | |
3767 | = build_aligned_type (TREE_TYPE (data_ref), | |
3768 | TYPE_ALIGN (TREE_TYPE (vectype))); | |
3769 | pi->align = TYPE_ALIGN_UNIT (TREE_TYPE (vectype)); | |
3770 | pi->misalign = 0; | |
3771 | } | |
3772 | else | |
3773 | { | |
3774 | TREE_TYPE (data_ref) | |
3775 | = build_aligned_type (TREE_TYPE (data_ref), | |
3776 | TYPE_ALIGN (TREE_TYPE (vectype))); | |
3777 | pi->misalign = DR_MISALIGNMENT (first_dr); | |
3778 | } | |
ebfd146a IR |
3779 | break; |
3780 | } | |
3781 | case dr_explicit_realign: | |
3782 | { | |
3783 | tree ptr, bump; | |
3784 | tree vs_minus_1 = size_int (TYPE_VECTOR_SUBPARTS (vectype) - 1); | |
3785 | ||
3786 | if (compute_in_loop) | |
3787 | msq = vect_setup_realignment (first_stmt, gsi, | |
3788 | &realignment_token, | |
b8698a0f | 3789 | dr_explicit_realign, |
ebfd146a IR |
3790 | dataref_ptr, NULL); |
3791 | ||
75421dcd RG |
3792 | new_stmt = gimple_build_assign_with_ops |
3793 | (BIT_AND_EXPR, NULL_TREE, dataref_ptr, | |
3794 | build_int_cst | |
3795 | (TREE_TYPE (dataref_ptr), | |
3796 | -(HOST_WIDE_INT)TYPE_ALIGN_UNIT (vectype))); | |
3797 | ptr = make_ssa_name (SSA_NAME_VAR (dataref_ptr), new_stmt); | |
3798 | gimple_assign_set_lhs (new_stmt, ptr); | |
3799 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
20ede5c6 RG |
3800 | data_ref |
3801 | = build2 (MEM_REF, vectype, ptr, | |
3802 | build_int_cst (reference_alias_ptr_type | |
3803 | (DR_REF (first_dr)), 0)); | |
ebfd146a IR |
3804 | vec_dest = vect_create_destination_var (scalar_dest, vectype); |
3805 | new_stmt = gimple_build_assign (vec_dest, data_ref); | |
3806 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
3807 | gimple_assign_set_lhs (new_stmt, new_temp); | |
5006671f RG |
3808 | gimple_set_vdef (new_stmt, gimple_vdef (stmt)); |
3809 | gimple_set_vuse (new_stmt, gimple_vuse (stmt)); | |
ebfd146a | 3810 | vect_finish_stmt_generation (stmt, new_stmt, gsi); |
ebfd146a IR |
3811 | msq = new_temp; |
3812 | ||
3813 | bump = size_binop (MULT_EXPR, vs_minus_1, | |
3814 | TYPE_SIZE_UNIT (scalar_type)); | |
3815 | ptr = bump_vector_ptr (dataref_ptr, NULL, gsi, stmt, bump); | |
75421dcd RG |
3816 | new_stmt = gimple_build_assign_with_ops |
3817 | (BIT_AND_EXPR, NULL_TREE, ptr, | |
3818 | build_int_cst | |
3819 | (TREE_TYPE (ptr), | |
3820 | -(HOST_WIDE_INT)TYPE_ALIGN_UNIT (vectype))); | |
3821 | ptr = make_ssa_name (SSA_NAME_VAR (dataref_ptr), new_stmt); | |
3822 | gimple_assign_set_lhs (new_stmt, ptr); | |
3823 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
20ede5c6 RG |
3824 | data_ref |
3825 | = build2 (MEM_REF, vectype, ptr, | |
3826 | build_int_cst (reference_alias_ptr_type | |
3827 | (DR_REF (first_dr)), 0)); | |
ebfd146a IR |
3828 | break; |
3829 | } | |
3830 | case dr_explicit_realign_optimized: | |
75421dcd RG |
3831 | new_stmt = gimple_build_assign_with_ops |
3832 | (BIT_AND_EXPR, NULL_TREE, dataref_ptr, | |
3833 | build_int_cst | |
3834 | (TREE_TYPE (dataref_ptr), | |
3835 | -(HOST_WIDE_INT)TYPE_ALIGN_UNIT (vectype))); | |
3836 | new_temp = make_ssa_name (SSA_NAME_VAR (dataref_ptr), new_stmt); | |
3837 | gimple_assign_set_lhs (new_stmt, new_temp); | |
3838 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
20ede5c6 RG |
3839 | data_ref |
3840 | = build2 (MEM_REF, vectype, new_temp, | |
3841 | build_int_cst (reference_alias_ptr_type | |
3842 | (DR_REF (first_dr)), 0)); | |
ebfd146a IR |
3843 | break; |
3844 | default: | |
3845 | gcc_unreachable (); | |
3846 | } | |
3847 | vec_dest = vect_create_destination_var (scalar_dest, vectype); | |
3848 | new_stmt = gimple_build_assign (vec_dest, data_ref); | |
3849 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
3850 | gimple_assign_set_lhs (new_stmt, new_temp); | |
3851 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
3852 | mark_symbols_for_renaming (new_stmt); | |
3853 | ||
3854 | /* 3. Handle explicit realignment if necessary/supported. Create in | |
3855 | loop: vec_dest = realign_load (msq, lsq, realignment_token) */ | |
3856 | if (alignment_support_scheme == dr_explicit_realign_optimized | |
3857 | || alignment_support_scheme == dr_explicit_realign) | |
3858 | { | |
3859 | tree tmp; | |
3860 | ||
3861 | lsq = gimple_assign_lhs (new_stmt); | |
3862 | if (!realignment_token) | |
3863 | realignment_token = dataref_ptr; | |
3864 | vec_dest = vect_create_destination_var (scalar_dest, vectype); | |
3865 | tmp = build3 (REALIGN_LOAD_EXPR, vectype, msq, lsq, | |
3866 | realignment_token); | |
3867 | new_stmt = gimple_build_assign (vec_dest, tmp); | |
3868 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
3869 | gimple_assign_set_lhs (new_stmt, new_temp); | |
3870 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
3871 | ||
3872 | if (alignment_support_scheme == dr_explicit_realign_optimized) | |
3873 | { | |
3874 | gcc_assert (phi); | |
3875 | if (i == vec_num - 1 && j == ncopies - 1) | |
f5045c96 AM |
3876 | add_phi_arg (phi, lsq, loop_latch_edge (containing_loop), |
3877 | UNKNOWN_LOCATION); | |
ebfd146a IR |
3878 | msq = lsq; |
3879 | } | |
3880 | } | |
3881 | ||
3882 | /* 4. Handle invariant-load. */ | |
a70d6342 | 3883 | if (inv_p && !bb_vinfo) |
ebfd146a IR |
3884 | { |
3885 | gcc_assert (!strided_load); | |
3886 | gcc_assert (nested_in_vect_loop_p (loop, stmt)); | |
3887 | if (j == 0) | |
3888 | { | |
3889 | int k; | |
3890 | tree t = NULL_TREE; | |
3891 | tree vec_inv, bitpos, bitsize = TYPE_SIZE (scalar_type); | |
3892 | ||
3893 | /* CHECKME: bitpos depends on endianess? */ | |
3894 | bitpos = bitsize_zero_node; | |
b8698a0f | 3895 | vec_inv = build3 (BIT_FIELD_REF, scalar_type, new_temp, |
ebfd146a | 3896 | bitsize, bitpos); |
b8698a0f | 3897 | vec_dest = |
ebfd146a IR |
3898 | vect_create_destination_var (scalar_dest, NULL_TREE); |
3899 | new_stmt = gimple_build_assign (vec_dest, vec_inv); | |
3900 | new_temp = make_ssa_name (vec_dest, new_stmt); | |
3901 | gimple_assign_set_lhs (new_stmt, new_temp); | |
3902 | vect_finish_stmt_generation (stmt, new_stmt, gsi); | |
3903 | ||
3904 | for (k = nunits - 1; k >= 0; --k) | |
3905 | t = tree_cons (NULL_TREE, new_temp, t); | |
3906 | /* FIXME: use build_constructor directly. */ | |
3907 | vec_inv = build_constructor_from_list (vectype, t); | |
3908 | new_temp = vect_init_vector (stmt, vec_inv, vectype, gsi); | |
3909 | new_stmt = SSA_NAME_DEF_STMT (new_temp); | |
3910 | } | |
3911 | else | |
3912 | gcc_unreachable (); /* FORNOW. */ | |
3913 | } | |
3914 | ||
3915 | /* Collect vector loads and later create their permutation in | |
3916 | vect_transform_strided_load (). */ | |
3917 | if (strided_load || slp_perm) | |
3918 | VEC_quick_push (tree, dr_chain, new_temp); | |
3919 | ||
3920 | /* Store vector loads in the corresponding SLP_NODE. */ | |
3921 | if (slp && !slp_perm) | |
3922 | VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt); | |
3923 | } | |
3924 | ||
3925 | if (slp && !slp_perm) | |
3926 | continue; | |
3927 | ||
3928 | if (slp_perm) | |
3929 | { | |
a70d6342 | 3930 | if (!vect_transform_slp_perm_load (stmt, dr_chain, gsi, vf, |
ebfd146a IR |
3931 | slp_node_instance, false)) |
3932 | { | |
3933 | VEC_free (tree, heap, dr_chain); | |
3934 | return false; | |
3935 | } | |
3936 | } | |
3937 | else | |
3938 | { | |
3939 | if (strided_load) | |
3940 | { | |
3941 | if (!vect_transform_strided_load (stmt, dr_chain, group_size, gsi)) | |
b8698a0f | 3942 | return false; |
ebfd146a IR |
3943 | |
3944 | *vec_stmt = STMT_VINFO_VEC_STMT (stmt_info); | |
3945 | VEC_free (tree, heap, dr_chain); | |
3946 | dr_chain = VEC_alloc (tree, heap, group_size); | |
3947 | } | |
3948 | else | |
3949 | { | |
3950 | if (j == 0) | |
3951 | STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt; | |
3952 | else | |
3953 | STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt; | |
3954 | prev_stmt_info = vinfo_for_stmt (new_stmt); | |
3955 | } | |
3956 | } | |
3957 | } | |
3958 | ||
3959 | if (dr_chain) | |
3960 | VEC_free (tree, heap, dr_chain); | |
3961 | ||
3962 | return true; | |
3963 | } | |
3964 | ||
3965 | /* Function vect_is_simple_cond. | |
b8698a0f | 3966 | |
ebfd146a IR |
3967 | Input: |
3968 | LOOP - the loop that is being vectorized. | |
3969 | COND - Condition that is checked for simple use. | |
3970 | ||
3971 | Returns whether a COND can be vectorized. Checks whether | |
3972 | condition operands are supportable using vec_is_simple_use. */ | |
3973 | ||
3974 | static bool | |
3975 | vect_is_simple_cond (tree cond, loop_vec_info loop_vinfo) | |
3976 | { | |
3977 | tree lhs, rhs; | |
3978 | tree def; | |
3979 | enum vect_def_type dt; | |
3980 | ||
3981 | if (!COMPARISON_CLASS_P (cond)) | |
3982 | return false; | |
3983 | ||
3984 | lhs = TREE_OPERAND (cond, 0); | |
3985 | rhs = TREE_OPERAND (cond, 1); | |
3986 | ||
3987 | if (TREE_CODE (lhs) == SSA_NAME) | |
3988 | { | |
3989 | gimple lhs_def_stmt = SSA_NAME_DEF_STMT (lhs); | |
b8698a0f | 3990 | if (!vect_is_simple_use (lhs, loop_vinfo, NULL, &lhs_def_stmt, &def, |
a70d6342 | 3991 | &dt)) |
ebfd146a IR |
3992 | return false; |
3993 | } | |
3994 | else if (TREE_CODE (lhs) != INTEGER_CST && TREE_CODE (lhs) != REAL_CST | |
3995 | && TREE_CODE (lhs) != FIXED_CST) | |
3996 | return false; | |
3997 | ||
3998 | if (TREE_CODE (rhs) == SSA_NAME) | |
3999 | { | |
4000 | gimple rhs_def_stmt = SSA_NAME_DEF_STMT (rhs); | |
b8698a0f | 4001 | if (!vect_is_simple_use (rhs, loop_vinfo, NULL, &rhs_def_stmt, &def, |
a70d6342 | 4002 | &dt)) |
ebfd146a IR |
4003 | return false; |
4004 | } | |
4005 | else if (TREE_CODE (rhs) != INTEGER_CST && TREE_CODE (rhs) != REAL_CST | |
4006 | && TREE_CODE (rhs) != FIXED_CST) | |
4007 | return false; | |
4008 | ||
4009 | return true; | |
4010 | } | |
4011 | ||
4012 | /* vectorizable_condition. | |
4013 | ||
b8698a0f L |
4014 | Check if STMT is conditional modify expression that can be vectorized. |
4015 | If VEC_STMT is also passed, vectorize the STMT: create a vectorized | |
4016 | stmt using VEC_COND_EXPR to replace it, put it in VEC_STMT, and insert it | |
4bbe8262 IR |
4017 | at GSI. |
4018 | ||
4019 | When STMT is vectorized as nested cycle, REDUC_DEF is the vector variable | |
4020 | to be used at REDUC_INDEX (in then clause if REDUC_INDEX is 1, and in | |
4021 | else caluse if it is 2). | |
ebfd146a IR |
4022 | |
4023 | Return FALSE if not a vectorizable STMT, TRUE otherwise. */ | |
4024 | ||
4bbe8262 | 4025 | bool |
ebfd146a | 4026 | vectorizable_condition (gimple stmt, gimple_stmt_iterator *gsi, |
4bbe8262 | 4027 | gimple *vec_stmt, tree reduc_def, int reduc_index) |
ebfd146a IR |
4028 | { |
4029 | tree scalar_dest = NULL_TREE; | |
4030 | tree vec_dest = NULL_TREE; | |
4031 | tree op = NULL_TREE; | |
4032 | tree cond_expr, then_clause, else_clause; | |
4033 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
4034 | tree vectype = STMT_VINFO_VECTYPE (stmt_info); | |
4035 | tree vec_cond_lhs, vec_cond_rhs, vec_then_clause, vec_else_clause; | |
4036 | tree vec_compare, vec_cond_expr; | |
4037 | tree new_temp; | |
4038 | loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); | |
4039 | enum machine_mode vec_mode; | |
4040 | tree def; | |
4041 | enum vect_def_type dt; | |
4042 | int nunits = TYPE_VECTOR_SUBPARTS (vectype); | |
4043 | int ncopies = LOOP_VINFO_VECT_FACTOR (loop_vinfo) / nunits; | |
4044 | enum tree_code code; | |
4045 | ||
a70d6342 IR |
4046 | /* FORNOW: unsupported in basic block SLP. */ |
4047 | gcc_assert (loop_vinfo); | |
b8698a0f | 4048 | |
ebfd146a IR |
4049 | gcc_assert (ncopies >= 1); |
4050 | if (ncopies > 1) | |
4051 | return false; /* FORNOW */ | |
4052 | ||
4053 | if (!STMT_VINFO_RELEVANT_P (stmt_info)) | |
4054 | return false; | |
4055 | ||
4bbe8262 IR |
4056 | if (STMT_VINFO_DEF_TYPE (stmt_info) != vect_internal_def |
4057 | && !(STMT_VINFO_DEF_TYPE (stmt_info) == vect_nested_cycle | |
4058 | && reduc_def)) | |
ebfd146a IR |
4059 | return false; |
4060 | ||
4061 | /* FORNOW: SLP not supported. */ | |
4062 | if (STMT_SLP_TYPE (stmt_info)) | |
4063 | return false; | |
4064 | ||
4065 | /* FORNOW: not yet supported. */ | |
b8698a0f | 4066 | if (STMT_VINFO_LIVE_P (stmt_info)) |
ebfd146a IR |
4067 | { |
4068 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4069 | fprintf (vect_dump, "value used after loop."); | |
4070 | return false; | |
4071 | } | |
4072 | ||
4073 | /* Is vectorizable conditional operation? */ | |
4074 | if (!is_gimple_assign (stmt)) | |
4075 | return false; | |
4076 | ||
4077 | code = gimple_assign_rhs_code (stmt); | |
4078 | ||
4079 | if (code != COND_EXPR) | |
4080 | return false; | |
4081 | ||
4082 | gcc_assert (gimple_assign_single_p (stmt)); | |
4083 | op = gimple_assign_rhs1 (stmt); | |
4084 | cond_expr = TREE_OPERAND (op, 0); | |
4085 | then_clause = TREE_OPERAND (op, 1); | |
4086 | else_clause = TREE_OPERAND (op, 2); | |
4087 | ||
4088 | if (!vect_is_simple_cond (cond_expr, loop_vinfo)) | |
4089 | return false; | |
4090 | ||
4091 | /* We do not handle two different vector types for the condition | |
4092 | and the values. */ | |
8533c9d8 SP |
4093 | if (!types_compatible_p (TREE_TYPE (TREE_OPERAND (cond_expr, 0)), |
4094 | TREE_TYPE (vectype))) | |
ebfd146a IR |
4095 | return false; |
4096 | ||
4097 | if (TREE_CODE (then_clause) == SSA_NAME) | |
4098 | { | |
4099 | gimple then_def_stmt = SSA_NAME_DEF_STMT (then_clause); | |
b8698a0f | 4100 | if (!vect_is_simple_use (then_clause, loop_vinfo, NULL, |
ebfd146a IR |
4101 | &then_def_stmt, &def, &dt)) |
4102 | return false; | |
4103 | } | |
b8698a0f | 4104 | else if (TREE_CODE (then_clause) != INTEGER_CST |
ebfd146a IR |
4105 | && TREE_CODE (then_clause) != REAL_CST |
4106 | && TREE_CODE (then_clause) != FIXED_CST) | |
4107 | return false; | |
4108 | ||
4109 | if (TREE_CODE (else_clause) == SSA_NAME) | |
4110 | { | |
4111 | gimple else_def_stmt = SSA_NAME_DEF_STMT (else_clause); | |
a70d6342 | 4112 | if (!vect_is_simple_use (else_clause, loop_vinfo, NULL, |
ebfd146a IR |
4113 | &else_def_stmt, &def, &dt)) |
4114 | return false; | |
4115 | } | |
b8698a0f | 4116 | else if (TREE_CODE (else_clause) != INTEGER_CST |
ebfd146a IR |
4117 | && TREE_CODE (else_clause) != REAL_CST |
4118 | && TREE_CODE (else_clause) != FIXED_CST) | |
4119 | return false; | |
4120 | ||
4121 | ||
4122 | vec_mode = TYPE_MODE (vectype); | |
4123 | ||
b8698a0f | 4124 | if (!vec_stmt) |
ebfd146a IR |
4125 | { |
4126 | STMT_VINFO_TYPE (stmt_info) = condition_vec_info_type; | |
8e7aa1f9 | 4127 | return expand_vec_cond_expr_p (TREE_TYPE (op), vec_mode); |
ebfd146a IR |
4128 | } |
4129 | ||
4130 | /* Transform */ | |
4131 | ||
4132 | /* Handle def. */ | |
4133 | scalar_dest = gimple_assign_lhs (stmt); | |
4134 | vec_dest = vect_create_destination_var (scalar_dest, vectype); | |
4135 | ||
4136 | /* Handle cond expr. */ | |
b8698a0f | 4137 | vec_cond_lhs = |
ebfd146a | 4138 | vect_get_vec_def_for_operand (TREE_OPERAND (cond_expr, 0), stmt, NULL); |
b8698a0f | 4139 | vec_cond_rhs = |
ebfd146a | 4140 | vect_get_vec_def_for_operand (TREE_OPERAND (cond_expr, 1), stmt, NULL); |
4bbe8262 IR |
4141 | if (reduc_index == 1) |
4142 | vec_then_clause = reduc_def; | |
4143 | else | |
4144 | vec_then_clause = vect_get_vec_def_for_operand (then_clause, stmt, NULL); | |
4145 | if (reduc_index == 2) | |
4146 | vec_else_clause = reduc_def; | |
4147 | else | |
4148 | vec_else_clause = vect_get_vec_def_for_operand (else_clause, stmt, NULL); | |
ebfd146a IR |
4149 | |
4150 | /* Arguments are ready. Create the new vector stmt. */ | |
b8698a0f | 4151 | vec_compare = build2 (TREE_CODE (cond_expr), vectype, |
ebfd146a | 4152 | vec_cond_lhs, vec_cond_rhs); |
b8698a0f | 4153 | vec_cond_expr = build3 (VEC_COND_EXPR, vectype, |
ebfd146a IR |
4154 | vec_compare, vec_then_clause, vec_else_clause); |
4155 | ||
4156 | *vec_stmt = gimple_build_assign (vec_dest, vec_cond_expr); | |
4157 | new_temp = make_ssa_name (vec_dest, *vec_stmt); | |
4158 | gimple_assign_set_lhs (*vec_stmt, new_temp); | |
4159 | vect_finish_stmt_generation (stmt, *vec_stmt, gsi); | |
b8698a0f | 4160 | |
ebfd146a IR |
4161 | return true; |
4162 | } | |
4163 | ||
4164 | ||
8644a673 | 4165 | /* Make sure the statement is vectorizable. */ |
ebfd146a IR |
4166 | |
4167 | bool | |
a70d6342 | 4168 | vect_analyze_stmt (gimple stmt, bool *need_to_vectorize, slp_tree node) |
ebfd146a | 4169 | { |
8644a673 | 4170 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); |
a70d6342 | 4171 | bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_info); |
b8698a0f | 4172 | enum vect_relevant relevance = STMT_VINFO_RELEVANT (stmt_info); |
ebfd146a | 4173 | bool ok; |
a70d6342 | 4174 | tree scalar_type, vectype; |
ebfd146a IR |
4175 | |
4176 | if (vect_print_dump_info (REPORT_DETAILS)) | |
ebfd146a | 4177 | { |
8644a673 IR |
4178 | fprintf (vect_dump, "==> examining statement: "); |
4179 | print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM); | |
4180 | } | |
ebfd146a | 4181 | |
1825a1f3 | 4182 | if (gimple_has_volatile_ops (stmt)) |
b8698a0f | 4183 | { |
1825a1f3 IR |
4184 | if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) |
4185 | fprintf (vect_dump, "not vectorized: stmt has volatile operands"); | |
4186 | ||
4187 | return false; | |
4188 | } | |
b8698a0f L |
4189 | |
4190 | /* Skip stmts that do not need to be vectorized. In loops this is expected | |
8644a673 IR |
4191 | to include: |
4192 | - the COND_EXPR which is the loop exit condition | |
4193 | - any LABEL_EXPRs in the loop | |
b8698a0f | 4194 | - computations that are used only for array indexing or loop control. |
8644a673 IR |
4195 | In basic blocks we only analyze statements that are a part of some SLP |
4196 | instance, therefore, all the statements are relevant. */ | |
ebfd146a | 4197 | |
b8698a0f | 4198 | if (!STMT_VINFO_RELEVANT_P (stmt_info) |
8644a673 | 4199 | && !STMT_VINFO_LIVE_P (stmt_info)) |
ebfd146a IR |
4200 | { |
4201 | if (vect_print_dump_info (REPORT_DETAILS)) | |
8644a673 | 4202 | fprintf (vect_dump, "irrelevant."); |
ebfd146a | 4203 | |
8644a673 IR |
4204 | return true; |
4205 | } | |
ebfd146a | 4206 | |
8644a673 IR |
4207 | switch (STMT_VINFO_DEF_TYPE (stmt_info)) |
4208 | { | |
4209 | case vect_internal_def: | |
4210 | break; | |
ebfd146a | 4211 | |
8644a673 | 4212 | case vect_reduction_def: |
7c5222ff | 4213 | case vect_nested_cycle: |
a70d6342 | 4214 | gcc_assert (!bb_vinfo && (relevance == vect_used_in_outer |
8644a673 | 4215 | || relevance == vect_used_in_outer_by_reduction |
a70d6342 | 4216 | || relevance == vect_unused_in_scope)); |
8644a673 IR |
4217 | break; |
4218 | ||
4219 | case vect_induction_def: | |
4220 | case vect_constant_def: | |
4221 | case vect_external_def: | |
4222 | case vect_unknown_def_type: | |
4223 | default: | |
4224 | gcc_unreachable (); | |
4225 | } | |
ebfd146a | 4226 | |
a70d6342 IR |
4227 | if (bb_vinfo) |
4228 | { | |
4229 | gcc_assert (PURE_SLP_STMT (stmt_info)); | |
4230 | ||
b690cc0f | 4231 | scalar_type = TREE_TYPE (gimple_get_lhs (stmt)); |
a70d6342 IR |
4232 | if (vect_print_dump_info (REPORT_DETAILS)) |
4233 | { | |
4234 | fprintf (vect_dump, "get vectype for scalar type: "); | |
4235 | print_generic_expr (vect_dump, scalar_type, TDF_SLIM); | |
4236 | } | |
4237 | ||
4238 | vectype = get_vectype_for_scalar_type (scalar_type); | |
4239 | if (!vectype) | |
4240 | { | |
4241 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4242 | { | |
4243 | fprintf (vect_dump, "not SLPed: unsupported data-type "); | |
4244 | print_generic_expr (vect_dump, scalar_type, TDF_SLIM); | |
4245 | } | |
4246 | return false; | |
4247 | } | |
4248 | ||
4249 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4250 | { | |
4251 | fprintf (vect_dump, "vectype: "); | |
4252 | print_generic_expr (vect_dump, vectype, TDF_SLIM); | |
4253 | } | |
4254 | ||
4255 | STMT_VINFO_VECTYPE (stmt_info) = vectype; | |
4256 | } | |
4257 | ||
8644a673 | 4258 | if (STMT_VINFO_RELEVANT_P (stmt_info)) |
ebfd146a | 4259 | { |
8644a673 IR |
4260 | gcc_assert (!VECTOR_MODE_P (TYPE_MODE (gimple_expr_type (stmt)))); |
4261 | gcc_assert (STMT_VINFO_VECTYPE (stmt_info)); | |
4262 | *need_to_vectorize = true; | |
ebfd146a IR |
4263 | } |
4264 | ||
8644a673 | 4265 | ok = true; |
b8698a0f | 4266 | if (!bb_vinfo |
a70d6342 IR |
4267 | && (STMT_VINFO_RELEVANT_P (stmt_info) |
4268 | || STMT_VINFO_DEF_TYPE (stmt_info) == vect_reduction_def)) | |
8644a673 IR |
4269 | ok = (vectorizable_type_promotion (stmt, NULL, NULL, NULL) |
4270 | || vectorizable_type_demotion (stmt, NULL, NULL, NULL) | |
4271 | || vectorizable_conversion (stmt, NULL, NULL, NULL) | |
4272 | || vectorizable_operation (stmt, NULL, NULL, NULL) | |
4273 | || vectorizable_assignment (stmt, NULL, NULL, NULL) | |
4274 | || vectorizable_load (stmt, NULL, NULL, NULL, NULL) | |
4275 | || vectorizable_call (stmt, NULL, NULL) | |
4276 | || vectorizable_store (stmt, NULL, NULL, NULL) | |
b5aeb3bb | 4277 | || vectorizable_reduction (stmt, NULL, NULL, NULL) |
4bbe8262 | 4278 | || vectorizable_condition (stmt, NULL, NULL, NULL, 0)); |
a70d6342 IR |
4279 | else |
4280 | { | |
4281 | if (bb_vinfo) | |
4282 | ok = (vectorizable_operation (stmt, NULL, NULL, node) | |
4283 | || vectorizable_assignment (stmt, NULL, NULL, node) | |
4284 | || vectorizable_load (stmt, NULL, NULL, node, NULL) | |
4285 | || vectorizable_store (stmt, NULL, NULL, node)); | |
b8698a0f | 4286 | } |
8644a673 IR |
4287 | |
4288 | if (!ok) | |
ebfd146a | 4289 | { |
8644a673 IR |
4290 | if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) |
4291 | { | |
4292 | fprintf (vect_dump, "not vectorized: relevant stmt not "); | |
4293 | fprintf (vect_dump, "supported: "); | |
4294 | print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM); | |
4295 | } | |
b8698a0f | 4296 | |
ebfd146a IR |
4297 | return false; |
4298 | } | |
4299 | ||
a70d6342 IR |
4300 | if (bb_vinfo) |
4301 | return true; | |
4302 | ||
8644a673 IR |
4303 | /* Stmts that are (also) "live" (i.e. - that are used out of the loop) |
4304 | need extra handling, except for vectorizable reductions. */ | |
4305 | if (STMT_VINFO_LIVE_P (stmt_info) | |
4306 | && STMT_VINFO_TYPE (stmt_info) != reduc_vec_info_type) | |
4307 | ok = vectorizable_live_operation (stmt, NULL, NULL); | |
ebfd146a | 4308 | |
8644a673 | 4309 | if (!ok) |
ebfd146a | 4310 | { |
8644a673 IR |
4311 | if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) |
4312 | { | |
4313 | fprintf (vect_dump, "not vectorized: live stmt not "); | |
4314 | fprintf (vect_dump, "supported: "); | |
4315 | print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM); | |
4316 | } | |
b8698a0f | 4317 | |
8644a673 | 4318 | return false; |
ebfd146a IR |
4319 | } |
4320 | ||
8644a673 | 4321 | if (!PURE_SLP_STMT (stmt_info)) |
ebfd146a | 4322 | { |
b8698a0f L |
4323 | /* Groups of strided accesses whose size is not a power of 2 are not |
4324 | vectorizable yet using loop-vectorization. Therefore, if this stmt | |
4325 | feeds non-SLP-able stmts (i.e., this stmt has to be both SLPed and | |
a70d6342 | 4326 | loop-based vectorized), the loop cannot be vectorized. */ |
8644a673 IR |
4327 | if (STMT_VINFO_STRIDED_ACCESS (stmt_info) |
4328 | && exact_log2 (DR_GROUP_SIZE (vinfo_for_stmt ( | |
4329 | DR_GROUP_FIRST_DR (stmt_info)))) == -1) | |
ebfd146a | 4330 | { |
8644a673 IR |
4331 | if (vect_print_dump_info (REPORT_DETAILS)) |
4332 | { | |
4333 | fprintf (vect_dump, "not vectorized: the size of group " | |
4334 | "of strided accesses is not a power of 2"); | |
4335 | print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM); | |
4336 | } | |
4337 | ||
ebfd146a IR |
4338 | return false; |
4339 | } | |
4340 | } | |
b8698a0f | 4341 | |
ebfd146a IR |
4342 | return true; |
4343 | } | |
4344 | ||
4345 | ||
4346 | /* Function vect_transform_stmt. | |
4347 | ||
4348 | Create a vectorized stmt to replace STMT, and insert it at BSI. */ | |
4349 | ||
4350 | bool | |
4351 | vect_transform_stmt (gimple stmt, gimple_stmt_iterator *gsi, | |
b8698a0f | 4352 | bool *strided_store, slp_tree slp_node, |
ebfd146a IR |
4353 | slp_instance slp_node_instance) |
4354 | { | |
4355 | bool is_store = false; | |
4356 | gimple vec_stmt = NULL; | |
4357 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
4358 | gimple orig_stmt_in_pattern; | |
4359 | bool done; | |
ebfd146a IR |
4360 | |
4361 | switch (STMT_VINFO_TYPE (stmt_info)) | |
4362 | { | |
4363 | case type_demotion_vec_info_type: | |
4364 | done = vectorizable_type_demotion (stmt, gsi, &vec_stmt, slp_node); | |
4365 | gcc_assert (done); | |
4366 | break; | |
4367 | ||
4368 | case type_promotion_vec_info_type: | |
4369 | done = vectorizable_type_promotion (stmt, gsi, &vec_stmt, slp_node); | |
4370 | gcc_assert (done); | |
4371 | break; | |
4372 | ||
4373 | case type_conversion_vec_info_type: | |
4374 | done = vectorizable_conversion (stmt, gsi, &vec_stmt, slp_node); | |
4375 | gcc_assert (done); | |
4376 | break; | |
4377 | ||
4378 | case induc_vec_info_type: | |
4379 | gcc_assert (!slp_node); | |
4380 | done = vectorizable_induction (stmt, gsi, &vec_stmt); | |
4381 | gcc_assert (done); | |
4382 | break; | |
4383 | ||
4384 | case op_vec_info_type: | |
4385 | done = vectorizable_operation (stmt, gsi, &vec_stmt, slp_node); | |
4386 | gcc_assert (done); | |
4387 | break; | |
4388 | ||
4389 | case assignment_vec_info_type: | |
4390 | done = vectorizable_assignment (stmt, gsi, &vec_stmt, slp_node); | |
4391 | gcc_assert (done); | |
4392 | break; | |
4393 | ||
4394 | case load_vec_info_type: | |
b8698a0f | 4395 | done = vectorizable_load (stmt, gsi, &vec_stmt, slp_node, |
ebfd146a IR |
4396 | slp_node_instance); |
4397 | gcc_assert (done); | |
4398 | break; | |
4399 | ||
4400 | case store_vec_info_type: | |
4401 | done = vectorizable_store (stmt, gsi, &vec_stmt, slp_node); | |
4402 | gcc_assert (done); | |
4403 | if (STMT_VINFO_STRIDED_ACCESS (stmt_info) && !slp_node) | |
4404 | { | |
4405 | /* In case of interleaving, the whole chain is vectorized when the | |
4406 | last store in the chain is reached. Store stmts before the last | |
4407 | one are skipped, and there vec_stmt_info shouldn't be freed | |
4408 | meanwhile. */ | |
4409 | *strided_store = true; | |
4410 | if (STMT_VINFO_VEC_STMT (stmt_info)) | |
4411 | is_store = true; | |
4412 | } | |
4413 | else | |
4414 | is_store = true; | |
4415 | break; | |
4416 | ||
4417 | case condition_vec_info_type: | |
4418 | gcc_assert (!slp_node); | |
4bbe8262 | 4419 | done = vectorizable_condition (stmt, gsi, &vec_stmt, NULL, 0); |
ebfd146a IR |
4420 | gcc_assert (done); |
4421 | break; | |
4422 | ||
4423 | case call_vec_info_type: | |
4424 | gcc_assert (!slp_node); | |
4425 | done = vectorizable_call (stmt, gsi, &vec_stmt); | |
4426 | break; | |
4427 | ||
4428 | case reduc_vec_info_type: | |
b5aeb3bb | 4429 | done = vectorizable_reduction (stmt, gsi, &vec_stmt, slp_node); |
ebfd146a IR |
4430 | gcc_assert (done); |
4431 | break; | |
4432 | ||
4433 | default: | |
4434 | if (!STMT_VINFO_LIVE_P (stmt_info)) | |
4435 | { | |
4436 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4437 | fprintf (vect_dump, "stmt not supported."); | |
4438 | gcc_unreachable (); | |
4439 | } | |
4440 | } | |
4441 | ||
4442 | /* Handle inner-loop stmts whose DEF is used in the loop-nest that | |
4443 | is being vectorized, but outside the immediately enclosing loop. */ | |
4444 | if (vec_stmt | |
a70d6342 IR |
4445 | && STMT_VINFO_LOOP_VINFO (stmt_info) |
4446 | && nested_in_vect_loop_p (LOOP_VINFO_LOOP ( | |
4447 | STMT_VINFO_LOOP_VINFO (stmt_info)), stmt) | |
ebfd146a IR |
4448 | && STMT_VINFO_TYPE (stmt_info) != reduc_vec_info_type |
4449 | && (STMT_VINFO_RELEVANT (stmt_info) == vect_used_in_outer | |
b8698a0f | 4450 | || STMT_VINFO_RELEVANT (stmt_info) == |
a70d6342 | 4451 | vect_used_in_outer_by_reduction)) |
ebfd146a | 4452 | { |
a70d6342 IR |
4453 | struct loop *innerloop = LOOP_VINFO_LOOP ( |
4454 | STMT_VINFO_LOOP_VINFO (stmt_info))->inner; | |
ebfd146a IR |
4455 | imm_use_iterator imm_iter; |
4456 | use_operand_p use_p; | |
4457 | tree scalar_dest; | |
4458 | gimple exit_phi; | |
4459 | ||
4460 | if (vect_print_dump_info (REPORT_DETAILS)) | |
a70d6342 | 4461 | fprintf (vect_dump, "Record the vdef for outer-loop vectorization."); |
ebfd146a IR |
4462 | |
4463 | /* Find the relevant loop-exit phi-node, and reord the vec_stmt there | |
4464 | (to be used when vectorizing outer-loop stmts that use the DEF of | |
4465 | STMT). */ | |
4466 | if (gimple_code (stmt) == GIMPLE_PHI) | |
4467 | scalar_dest = PHI_RESULT (stmt); | |
4468 | else | |
4469 | scalar_dest = gimple_assign_lhs (stmt); | |
4470 | ||
4471 | FOR_EACH_IMM_USE_FAST (use_p, imm_iter, scalar_dest) | |
4472 | { | |
4473 | if (!flow_bb_inside_loop_p (innerloop, gimple_bb (USE_STMT (use_p)))) | |
4474 | { | |
4475 | exit_phi = USE_STMT (use_p); | |
4476 | STMT_VINFO_VEC_STMT (vinfo_for_stmt (exit_phi)) = vec_stmt; | |
4477 | } | |
4478 | } | |
4479 | } | |
4480 | ||
4481 | /* Handle stmts whose DEF is used outside the loop-nest that is | |
4482 | being vectorized. */ | |
4483 | if (STMT_VINFO_LIVE_P (stmt_info) | |
4484 | && STMT_VINFO_TYPE (stmt_info) != reduc_vec_info_type) | |
4485 | { | |
4486 | done = vectorizable_live_operation (stmt, gsi, &vec_stmt); | |
4487 | gcc_assert (done); | |
4488 | } | |
4489 | ||
4490 | if (vec_stmt) | |
4491 | { | |
4492 | STMT_VINFO_VEC_STMT (stmt_info) = vec_stmt; | |
4493 | orig_stmt_in_pattern = STMT_VINFO_RELATED_STMT (stmt_info); | |
4494 | if (orig_stmt_in_pattern) | |
4495 | { | |
4496 | stmt_vec_info stmt_vinfo = vinfo_for_stmt (orig_stmt_in_pattern); | |
4497 | /* STMT was inserted by the vectorizer to replace a computation idiom. | |
b8698a0f L |
4498 | ORIG_STMT_IN_PATTERN is a stmt in the original sequence that |
4499 | computed this idiom. We need to record a pointer to VEC_STMT in | |
4500 | the stmt_info of ORIG_STMT_IN_PATTERN. See more details in the | |
ebfd146a IR |
4501 | documentation of vect_pattern_recog. */ |
4502 | if (STMT_VINFO_IN_PATTERN_P (stmt_vinfo)) | |
4503 | { | |
4504 | gcc_assert (STMT_VINFO_RELATED_STMT (stmt_vinfo) == stmt); | |
4505 | STMT_VINFO_VEC_STMT (stmt_vinfo) = vec_stmt; | |
4506 | } | |
4507 | } | |
4508 | } | |
4509 | ||
b8698a0f | 4510 | return is_store; |
ebfd146a IR |
4511 | } |
4512 | ||
4513 | ||
b8698a0f | 4514 | /* Remove a group of stores (for SLP or interleaving), free their |
ebfd146a IR |
4515 | stmt_vec_info. */ |
4516 | ||
4517 | void | |
4518 | vect_remove_stores (gimple first_stmt) | |
4519 | { | |
4520 | gimple next = first_stmt; | |
4521 | gimple tmp; | |
4522 | gimple_stmt_iterator next_si; | |
4523 | ||
4524 | while (next) | |
4525 | { | |
4526 | /* Free the attached stmt_vec_info and remove the stmt. */ | |
4527 | next_si = gsi_for_stmt (next); | |
4528 | gsi_remove (&next_si, true); | |
4529 | tmp = DR_GROUP_NEXT_DR (vinfo_for_stmt (next)); | |
4530 | free_stmt_vec_info (next); | |
4531 | next = tmp; | |
4532 | } | |
4533 | } | |
4534 | ||
4535 | ||
4536 | /* Function new_stmt_vec_info. | |
4537 | ||
4538 | Create and initialize a new stmt_vec_info struct for STMT. */ | |
4539 | ||
4540 | stmt_vec_info | |
b8698a0f | 4541 | new_stmt_vec_info (gimple stmt, loop_vec_info loop_vinfo, |
a70d6342 | 4542 | bb_vec_info bb_vinfo) |
ebfd146a IR |
4543 | { |
4544 | stmt_vec_info res; | |
4545 | res = (stmt_vec_info) xcalloc (1, sizeof (struct _stmt_vec_info)); | |
4546 | ||
4547 | STMT_VINFO_TYPE (res) = undef_vec_info_type; | |
4548 | STMT_VINFO_STMT (res) = stmt; | |
4549 | STMT_VINFO_LOOP_VINFO (res) = loop_vinfo; | |
a70d6342 | 4550 | STMT_VINFO_BB_VINFO (res) = bb_vinfo; |
8644a673 | 4551 | STMT_VINFO_RELEVANT (res) = vect_unused_in_scope; |
ebfd146a IR |
4552 | STMT_VINFO_LIVE_P (res) = false; |
4553 | STMT_VINFO_VECTYPE (res) = NULL; | |
4554 | STMT_VINFO_VEC_STMT (res) = NULL; | |
4b5caab7 | 4555 | STMT_VINFO_VECTORIZABLE (res) = true; |
ebfd146a IR |
4556 | STMT_VINFO_IN_PATTERN_P (res) = false; |
4557 | STMT_VINFO_RELATED_STMT (res) = NULL; | |
4558 | STMT_VINFO_DATA_REF (res) = NULL; | |
4559 | ||
4560 | STMT_VINFO_DR_BASE_ADDRESS (res) = NULL; | |
4561 | STMT_VINFO_DR_OFFSET (res) = NULL; | |
4562 | STMT_VINFO_DR_INIT (res) = NULL; | |
4563 | STMT_VINFO_DR_STEP (res) = NULL; | |
4564 | STMT_VINFO_DR_ALIGNED_TO (res) = NULL; | |
4565 | ||
4566 | if (gimple_code (stmt) == GIMPLE_PHI | |
4567 | && is_loop_header_bb_p (gimple_bb (stmt))) | |
4568 | STMT_VINFO_DEF_TYPE (res) = vect_unknown_def_type; | |
4569 | else | |
8644a673 IR |
4570 | STMT_VINFO_DEF_TYPE (res) = vect_internal_def; |
4571 | ||
ebfd146a IR |
4572 | STMT_VINFO_SAME_ALIGN_REFS (res) = VEC_alloc (dr_p, heap, 5); |
4573 | STMT_VINFO_INSIDE_OF_LOOP_COST (res) = 0; | |
4574 | STMT_VINFO_OUTSIDE_OF_LOOP_COST (res) = 0; | |
32e8bb8e | 4575 | STMT_SLP_TYPE (res) = loop_vect; |
ebfd146a IR |
4576 | DR_GROUP_FIRST_DR (res) = NULL; |
4577 | DR_GROUP_NEXT_DR (res) = NULL; | |
4578 | DR_GROUP_SIZE (res) = 0; | |
4579 | DR_GROUP_STORE_COUNT (res) = 0; | |
4580 | DR_GROUP_GAP (res) = 0; | |
4581 | DR_GROUP_SAME_DR_STMT (res) = NULL; | |
4582 | DR_GROUP_READ_WRITE_DEPENDENCE (res) = false; | |
4583 | ||
4584 | return res; | |
4585 | } | |
4586 | ||
4587 | ||
4588 | /* Create a hash table for stmt_vec_info. */ | |
4589 | ||
4590 | void | |
4591 | init_stmt_vec_info_vec (void) | |
4592 | { | |
4593 | gcc_assert (!stmt_vec_info_vec); | |
4594 | stmt_vec_info_vec = VEC_alloc (vec_void_p, heap, 50); | |
4595 | } | |
4596 | ||
4597 | ||
4598 | /* Free hash table for stmt_vec_info. */ | |
4599 | ||
4600 | void | |
4601 | free_stmt_vec_info_vec (void) | |
4602 | { | |
4603 | gcc_assert (stmt_vec_info_vec); | |
4604 | VEC_free (vec_void_p, heap, stmt_vec_info_vec); | |
4605 | } | |
4606 | ||
4607 | ||
4608 | /* Free stmt vectorization related info. */ | |
4609 | ||
4610 | void | |
4611 | free_stmt_vec_info (gimple stmt) | |
4612 | { | |
4613 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
4614 | ||
4615 | if (!stmt_info) | |
4616 | return; | |
4617 | ||
4618 | VEC_free (dr_p, heap, STMT_VINFO_SAME_ALIGN_REFS (stmt_info)); | |
4619 | set_vinfo_for_stmt (stmt, NULL); | |
4620 | free (stmt_info); | |
4621 | } | |
4622 | ||
4623 | ||
4624 | /* Function get_vectype_for_scalar_type. | |
4625 | ||
4626 | Returns the vector type corresponding to SCALAR_TYPE as supported | |
4627 | by the target. */ | |
4628 | ||
4629 | tree | |
4630 | get_vectype_for_scalar_type (tree scalar_type) | |
4631 | { | |
4632 | enum machine_mode inner_mode = TYPE_MODE (scalar_type); | |
2f816591 | 4633 | unsigned int nbytes = GET_MODE_SIZE (inner_mode); |
ebfd146a IR |
4634 | int nunits; |
4635 | tree vectype; | |
4636 | ||
4637 | if (nbytes == 0 || nbytes >= UNITS_PER_SIMD_WORD (inner_mode)) | |
4638 | return NULL_TREE; | |
4639 | ||
2f816591 RG |
4640 | /* We can't build a vector type of elements with alignment bigger than |
4641 | their size. */ | |
4642 | if (nbytes < TYPE_ALIGN_UNIT (scalar_type)) | |
4643 | return NULL_TREE; | |
4644 | ||
6d7971b8 RG |
4645 | /* If we'd build a vector type of elements whose mode precision doesn't |
4646 | match their types precision we'll get mismatched types on vector | |
4647 | extracts via BIT_FIELD_REFs. This effectively means we disable | |
4648 | vectorization of bool and/or enum types in some languages. */ | |
4649 | if (INTEGRAL_TYPE_P (scalar_type) | |
4650 | && GET_MODE_BITSIZE (inner_mode) != TYPE_PRECISION (scalar_type)) | |
4651 | return NULL_TREE; | |
4652 | ||
ebfd146a IR |
4653 | /* FORNOW: Only a single vector size per mode (UNITS_PER_SIMD_WORD) |
4654 | is expected. */ | |
4655 | nunits = UNITS_PER_SIMD_WORD (inner_mode) / nbytes; | |
4656 | ||
4657 | vectype = build_vector_type (scalar_type, nunits); | |
4658 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4659 | { | |
4660 | fprintf (vect_dump, "get vectype with %d units of type ", nunits); | |
4661 | print_generic_expr (vect_dump, scalar_type, TDF_SLIM); | |
4662 | } | |
4663 | ||
4664 | if (!vectype) | |
4665 | return NULL_TREE; | |
4666 | ||
4667 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4668 | { | |
4669 | fprintf (vect_dump, "vectype: "); | |
4670 | print_generic_expr (vect_dump, vectype, TDF_SLIM); | |
4671 | } | |
4672 | ||
4673 | if (!VECTOR_MODE_P (TYPE_MODE (vectype)) | |
4674 | && !INTEGRAL_MODE_P (TYPE_MODE (vectype))) | |
4675 | { | |
4676 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4677 | fprintf (vect_dump, "mode not supported by target."); | |
4678 | return NULL_TREE; | |
4679 | } | |
4680 | ||
4681 | return vectype; | |
4682 | } | |
4683 | ||
b690cc0f RG |
4684 | /* Function get_same_sized_vectype |
4685 | ||
4686 | Returns a vector type corresponding to SCALAR_TYPE of size | |
4687 | VECTOR_TYPE if supported by the target. */ | |
4688 | ||
4689 | tree | |
4690 | get_same_sized_vectype (tree scalar_type, tree vector_type ATTRIBUTE_UNUSED) | |
4691 | { | |
4692 | return get_vectype_for_scalar_type (scalar_type); | |
4693 | } | |
4694 | ||
ebfd146a IR |
4695 | /* Function vect_is_simple_use. |
4696 | ||
4697 | Input: | |
a70d6342 IR |
4698 | LOOP_VINFO - the vect info of the loop that is being vectorized. |
4699 | BB_VINFO - the vect info of the basic block that is being vectorized. | |
4700 | OPERAND - operand of a stmt in the loop or bb. | |
ebfd146a IR |
4701 | DEF - the defining stmt in case OPERAND is an SSA_NAME. |
4702 | ||
4703 | Returns whether a stmt with OPERAND can be vectorized. | |
b8698a0f L |
4704 | For loops, supportable operands are constants, loop invariants, and operands |
4705 | that are defined by the current iteration of the loop. Unsupportable | |
4706 | operands are those that are defined by a previous iteration of the loop (as | |
a70d6342 IR |
4707 | is the case in reduction/induction computations). |
4708 | For basic blocks, supportable operands are constants and bb invariants. | |
4709 | For now, operands defined outside the basic block are not supported. */ | |
ebfd146a IR |
4710 | |
4711 | bool | |
b8698a0f | 4712 | vect_is_simple_use (tree operand, loop_vec_info loop_vinfo, |
a70d6342 | 4713 | bb_vec_info bb_vinfo, gimple *def_stmt, |
ebfd146a | 4714 | tree *def, enum vect_def_type *dt) |
b8698a0f | 4715 | { |
ebfd146a IR |
4716 | basic_block bb; |
4717 | stmt_vec_info stmt_vinfo; | |
a70d6342 | 4718 | struct loop *loop = NULL; |
b8698a0f | 4719 | |
a70d6342 IR |
4720 | if (loop_vinfo) |
4721 | loop = LOOP_VINFO_LOOP (loop_vinfo); | |
ebfd146a IR |
4722 | |
4723 | *def_stmt = NULL; | |
4724 | *def = NULL_TREE; | |
b8698a0f | 4725 | |
ebfd146a IR |
4726 | if (vect_print_dump_info (REPORT_DETAILS)) |
4727 | { | |
4728 | fprintf (vect_dump, "vect_is_simple_use: operand "); | |
4729 | print_generic_expr (vect_dump, operand, TDF_SLIM); | |
4730 | } | |
b8698a0f | 4731 | |
ebfd146a IR |
4732 | if (TREE_CODE (operand) == INTEGER_CST || TREE_CODE (operand) == REAL_CST) |
4733 | { | |
4734 | *dt = vect_constant_def; | |
4735 | return true; | |
4736 | } | |
b8698a0f | 4737 | |
ebfd146a IR |
4738 | if (is_gimple_min_invariant (operand)) |
4739 | { | |
4740 | *def = operand; | |
8644a673 | 4741 | *dt = vect_external_def; |
ebfd146a IR |
4742 | return true; |
4743 | } | |
4744 | ||
4745 | if (TREE_CODE (operand) == PAREN_EXPR) | |
4746 | { | |
4747 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4748 | fprintf (vect_dump, "non-associatable copy."); | |
4749 | operand = TREE_OPERAND (operand, 0); | |
4750 | } | |
b8698a0f | 4751 | |
ebfd146a IR |
4752 | if (TREE_CODE (operand) != SSA_NAME) |
4753 | { | |
4754 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4755 | fprintf (vect_dump, "not ssa-name."); | |
4756 | return false; | |
4757 | } | |
b8698a0f | 4758 | |
ebfd146a IR |
4759 | *def_stmt = SSA_NAME_DEF_STMT (operand); |
4760 | if (*def_stmt == NULL) | |
4761 | { | |
4762 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4763 | fprintf (vect_dump, "no def_stmt."); | |
4764 | return false; | |
4765 | } | |
4766 | ||
4767 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4768 | { | |
4769 | fprintf (vect_dump, "def_stmt: "); | |
4770 | print_gimple_stmt (vect_dump, *def_stmt, 0, TDF_SLIM); | |
4771 | } | |
4772 | ||
8644a673 | 4773 | /* Empty stmt is expected only in case of a function argument. |
ebfd146a IR |
4774 | (Otherwise - we expect a phi_node or a GIMPLE_ASSIGN). */ |
4775 | if (gimple_nop_p (*def_stmt)) | |
4776 | { | |
4777 | *def = operand; | |
8644a673 | 4778 | *dt = vect_external_def; |
ebfd146a IR |
4779 | return true; |
4780 | } | |
4781 | ||
4782 | bb = gimple_bb (*def_stmt); | |
a70d6342 IR |
4783 | |
4784 | if ((loop && !flow_bb_inside_loop_p (loop, bb)) | |
4785 | || (!loop && bb != BB_VINFO_BB (bb_vinfo)) | |
b8698a0f | 4786 | || (!loop && gimple_code (*def_stmt) == GIMPLE_PHI)) |
8644a673 | 4787 | *dt = vect_external_def; |
ebfd146a IR |
4788 | else |
4789 | { | |
4790 | stmt_vinfo = vinfo_for_stmt (*def_stmt); | |
4791 | *dt = STMT_VINFO_DEF_TYPE (stmt_vinfo); | |
4792 | } | |
4793 | ||
4794 | if (*dt == vect_unknown_def_type) | |
4795 | { | |
4796 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4797 | fprintf (vect_dump, "Unsupported pattern."); | |
4798 | return false; | |
4799 | } | |
4800 | ||
4801 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4802 | fprintf (vect_dump, "type of def: %d.",*dt); | |
4803 | ||
4804 | switch (gimple_code (*def_stmt)) | |
4805 | { | |
4806 | case GIMPLE_PHI: | |
4807 | *def = gimple_phi_result (*def_stmt); | |
4808 | break; | |
4809 | ||
4810 | case GIMPLE_ASSIGN: | |
4811 | *def = gimple_assign_lhs (*def_stmt); | |
4812 | break; | |
4813 | ||
4814 | case GIMPLE_CALL: | |
4815 | *def = gimple_call_lhs (*def_stmt); | |
4816 | if (*def != NULL) | |
4817 | break; | |
4818 | /* FALLTHRU */ | |
4819 | default: | |
4820 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4821 | fprintf (vect_dump, "unsupported defining stmt: "); | |
4822 | return false; | |
4823 | } | |
4824 | ||
4825 | return true; | |
4826 | } | |
4827 | ||
b690cc0f RG |
4828 | /* Function vect_is_simple_use_1. |
4829 | ||
4830 | Same as vect_is_simple_use_1 but also determines the vector operand | |
4831 | type of OPERAND and stores it to *VECTYPE. If the definition of | |
4832 | OPERAND is vect_uninitialized_def, vect_constant_def or | |
4833 | vect_external_def *VECTYPE will be set to NULL_TREE and the caller | |
4834 | is responsible to compute the best suited vector type for the | |
4835 | scalar operand. */ | |
4836 | ||
4837 | bool | |
4838 | vect_is_simple_use_1 (tree operand, loop_vec_info loop_vinfo, | |
4839 | bb_vec_info bb_vinfo, gimple *def_stmt, | |
4840 | tree *def, enum vect_def_type *dt, tree *vectype) | |
4841 | { | |
4842 | if (!vect_is_simple_use (operand, loop_vinfo, bb_vinfo, def_stmt, def, dt)) | |
4843 | return false; | |
4844 | ||
4845 | /* Now get a vector type if the def is internal, otherwise supply | |
4846 | NULL_TREE and leave it up to the caller to figure out a proper | |
4847 | type for the use stmt. */ | |
4848 | if (*dt == vect_internal_def | |
4849 | || *dt == vect_induction_def | |
4850 | || *dt == vect_reduction_def | |
4851 | || *dt == vect_double_reduction_def | |
4852 | || *dt == vect_nested_cycle) | |
4853 | { | |
4854 | stmt_vec_info stmt_info = vinfo_for_stmt (*def_stmt); | |
4855 | if (STMT_VINFO_IN_PATTERN_P (stmt_info)) | |
4856 | stmt_info = vinfo_for_stmt (STMT_VINFO_RELATED_STMT (stmt_info)); | |
4857 | *vectype = STMT_VINFO_VECTYPE (stmt_info); | |
4858 | gcc_assert (*vectype != NULL_TREE); | |
4859 | } | |
4860 | else if (*dt == vect_uninitialized_def | |
4861 | || *dt == vect_constant_def | |
4862 | || *dt == vect_external_def) | |
4863 | *vectype = NULL_TREE; | |
4864 | else | |
4865 | gcc_unreachable (); | |
4866 | ||
4867 | return true; | |
4868 | } | |
4869 | ||
ebfd146a IR |
4870 | |
4871 | /* Function supportable_widening_operation | |
4872 | ||
b8698a0f L |
4873 | Check whether an operation represented by the code CODE is a |
4874 | widening operation that is supported by the target platform in | |
b690cc0f RG |
4875 | vector form (i.e., when operating on arguments of type VECTYPE_IN |
4876 | producing a result of type VECTYPE_OUT). | |
b8698a0f | 4877 | |
ebfd146a IR |
4878 | Widening operations we currently support are NOP (CONVERT), FLOAT |
4879 | and WIDEN_MULT. This function checks if these operations are supported | |
4880 | by the target platform either directly (via vector tree-codes), or via | |
4881 | target builtins. | |
4882 | ||
4883 | Output: | |
b8698a0f L |
4884 | - CODE1 and CODE2 are codes of vector operations to be used when |
4885 | vectorizing the operation, if available. | |
ebfd146a IR |
4886 | - DECL1 and DECL2 are decls of target builtin functions to be used |
4887 | when vectorizing the operation, if available. In this case, | |
b8698a0f | 4888 | CODE1 and CODE2 are CALL_EXPR. |
ebfd146a IR |
4889 | - MULTI_STEP_CVT determines the number of required intermediate steps in |
4890 | case of multi-step conversion (like char->short->int - in that case | |
4891 | MULTI_STEP_CVT will be 1). | |
b8698a0f L |
4892 | - INTERM_TYPES contains the intermediate type required to perform the |
4893 | widening operation (short in the above example). */ | |
ebfd146a IR |
4894 | |
4895 | bool | |
b690cc0f RG |
4896 | supportable_widening_operation (enum tree_code code, gimple stmt, |
4897 | tree vectype_out, tree vectype_in, | |
ebfd146a IR |
4898 | tree *decl1, tree *decl2, |
4899 | enum tree_code *code1, enum tree_code *code2, | |
4900 | int *multi_step_cvt, | |
4901 | VEC (tree, heap) **interm_types) | |
4902 | { | |
4903 | stmt_vec_info stmt_info = vinfo_for_stmt (stmt); | |
4904 | loop_vec_info loop_info = STMT_VINFO_LOOP_VINFO (stmt_info); | |
4905 | struct loop *vect_loop = LOOP_VINFO_LOOP (loop_info); | |
4906 | bool ordered_p; | |
4907 | enum machine_mode vec_mode; | |
81f40b79 | 4908 | enum insn_code icode1, icode2; |
ebfd146a | 4909 | optab optab1, optab2; |
b690cc0f RG |
4910 | tree vectype = vectype_in; |
4911 | tree wide_vectype = vectype_out; | |
ebfd146a IR |
4912 | enum tree_code c1, c2; |
4913 | ||
4914 | /* The result of a vectorized widening operation usually requires two vectors | |
b8698a0f L |
4915 | (because the widened results do not fit int one vector). The generated |
4916 | vector results would normally be expected to be generated in the same | |
ebfd146a IR |
4917 | order as in the original scalar computation, i.e. if 8 results are |
4918 | generated in each vector iteration, they are to be organized as follows: | |
b8698a0f | 4919 | vect1: [res1,res2,res3,res4], vect2: [res5,res6,res7,res8]. |
ebfd146a | 4920 | |
b8698a0f | 4921 | However, in the special case that the result of the widening operation is |
ebfd146a | 4922 | used in a reduction computation only, the order doesn't matter (because |
b8698a0f | 4923 | when vectorizing a reduction we change the order of the computation). |
ebfd146a IR |
4924 | Some targets can take advantage of this and generate more efficient code. |
4925 | For example, targets like Altivec, that support widen_mult using a sequence | |
4926 | of {mult_even,mult_odd} generate the following vectors: | |
4927 | vect1: [res1,res3,res5,res7], vect2: [res2,res4,res6,res8]. | |
4928 | ||
4929 | When vectorizing outer-loops, we execute the inner-loop sequentially | |
b8698a0f L |
4930 | (each vectorized inner-loop iteration contributes to VF outer-loop |
4931 | iterations in parallel). We therefore don't allow to change the order | |
ebfd146a IR |
4932 | of the computation in the inner-loop during outer-loop vectorization. */ |
4933 | ||
4934 | if (STMT_VINFO_RELEVANT (stmt_info) == vect_used_by_reduction | |
4935 | && !nested_in_vect_loop_p (vect_loop, stmt)) | |
4936 | ordered_p = false; | |
4937 | else | |
4938 | ordered_p = true; | |
4939 | ||
4940 | if (!ordered_p | |
4941 | && code == WIDEN_MULT_EXPR | |
4942 | && targetm.vectorize.builtin_mul_widen_even | |
4943 | && targetm.vectorize.builtin_mul_widen_even (vectype) | |
4944 | && targetm.vectorize.builtin_mul_widen_odd | |
4945 | && targetm.vectorize.builtin_mul_widen_odd (vectype)) | |
4946 | { | |
4947 | if (vect_print_dump_info (REPORT_DETAILS)) | |
4948 | fprintf (vect_dump, "Unordered widening operation detected."); | |
4949 | ||
4950 | *code1 = *code2 = CALL_EXPR; | |
4951 | *decl1 = targetm.vectorize.builtin_mul_widen_even (vectype); | |
4952 | *decl2 = targetm.vectorize.builtin_mul_widen_odd (vectype); | |
4953 | return true; | |
4954 | } | |
4955 | ||
4956 | switch (code) | |
4957 | { | |
4958 | case WIDEN_MULT_EXPR: | |
4959 | if (BYTES_BIG_ENDIAN) | |
4960 | { | |
4961 | c1 = VEC_WIDEN_MULT_HI_EXPR; | |
4962 | c2 = VEC_WIDEN_MULT_LO_EXPR; | |
4963 | } | |
4964 | else | |
4965 | { | |
4966 | c2 = VEC_WIDEN_MULT_HI_EXPR; | |
4967 | c1 = VEC_WIDEN_MULT_LO_EXPR; | |
4968 | } | |
4969 | break; | |
4970 | ||
4971 | CASE_CONVERT: | |
4972 | if (BYTES_BIG_ENDIAN) | |
4973 | { | |
4974 | c1 = VEC_UNPACK_HI_EXPR; | |
4975 | c2 = VEC_UNPACK_LO_EXPR; | |
4976 | } | |
4977 | else | |
4978 | { | |
4979 | c2 = VEC_UNPACK_HI_EXPR; | |
4980 | c1 = VEC_UNPACK_LO_EXPR; | |
4981 | } | |
4982 | break; | |
4983 | ||
4984 | case FLOAT_EXPR: | |
4985 | if (BYTES_BIG_ENDIAN) | |
4986 | { | |
4987 | c1 = VEC_UNPACK_FLOAT_HI_EXPR; | |
4988 | c2 = VEC_UNPACK_FLOAT_LO_EXPR; | |
4989 | } | |
4990 | else | |
4991 | { | |
4992 | c2 = VEC_UNPACK_FLOAT_HI_EXPR; | |
4993 | c1 = VEC_UNPACK_FLOAT_LO_EXPR; | |
4994 | } | |
4995 | break; | |
4996 | ||
4997 | case FIX_TRUNC_EXPR: | |
4998 | /* ??? Not yet implemented due to missing VEC_UNPACK_FIX_TRUNC_HI_EXPR/ | |
4999 | VEC_UNPACK_FIX_TRUNC_LO_EXPR tree codes and optabs used for | |
5000 | computing the operation. */ | |
5001 | return false; | |
5002 | ||
5003 | default: | |
5004 | gcc_unreachable (); | |
5005 | } | |
5006 | ||
5007 | if (code == FIX_TRUNC_EXPR) | |
5008 | { | |
5009 | /* The signedness is determined from output operand. */ | |
b690cc0f RG |
5010 | optab1 = optab_for_tree_code (c1, vectype_out, optab_default); |
5011 | optab2 = optab_for_tree_code (c2, vectype_out, optab_default); | |
ebfd146a IR |
5012 | } |
5013 | else | |
5014 | { | |
5015 | optab1 = optab_for_tree_code (c1, vectype, optab_default); | |
5016 | optab2 = optab_for_tree_code (c2, vectype, optab_default); | |
5017 | } | |
5018 | ||
5019 | if (!optab1 || !optab2) | |
5020 | return false; | |
5021 | ||
5022 | vec_mode = TYPE_MODE (vectype); | |
947131ba RS |
5023 | if ((icode1 = optab_handler (optab1, vec_mode)) == CODE_FOR_nothing |
5024 | || (icode2 = optab_handler (optab2, vec_mode)) == CODE_FOR_nothing) | |
ebfd146a IR |
5025 | return false; |
5026 | ||
b8698a0f | 5027 | /* Check if it's a multi-step conversion that can be done using intermediate |
ebfd146a IR |
5028 | types. */ |
5029 | if (insn_data[icode1].operand[0].mode != TYPE_MODE (wide_vectype) | |
5030 | || insn_data[icode2].operand[0].mode != TYPE_MODE (wide_vectype)) | |
5031 | { | |
5032 | int i; | |
5033 | tree prev_type = vectype, intermediate_type; | |
5034 | enum machine_mode intermediate_mode, prev_mode = vec_mode; | |
5035 | optab optab3, optab4; | |
5036 | ||
5037 | if (!CONVERT_EXPR_CODE_P (code)) | |
5038 | return false; | |
b8698a0f | 5039 | |
ebfd146a IR |
5040 | *code1 = c1; |
5041 | *code2 = c2; | |
b8698a0f | 5042 | |
ebfd146a IR |
5043 | /* We assume here that there will not be more than MAX_INTERM_CVT_STEPS |
5044 | intermediate steps in promotion sequence. We try MAX_INTERM_CVT_STEPS | |
5045 | to get to NARROW_VECTYPE, and fail if we do not. */ | |
5046 | *interm_types = VEC_alloc (tree, heap, MAX_INTERM_CVT_STEPS); | |
5047 | for (i = 0; i < 3; i++) | |
5048 | { | |
5049 | intermediate_mode = insn_data[icode1].operand[0].mode; | |
5050 | intermediate_type = lang_hooks.types.type_for_mode (intermediate_mode, | |
5051 | TYPE_UNSIGNED (prev_type)); | |
5052 | optab3 = optab_for_tree_code (c1, intermediate_type, optab_default); | |
5053 | optab4 = optab_for_tree_code (c2, intermediate_type, optab_default); | |
5054 | ||
5055 | if (!optab3 || !optab4 | |
947131ba RS |
5056 | || ((icode1 = optab_handler (optab1, prev_mode)) |
5057 | == CODE_FOR_nothing) | |
ebfd146a | 5058 | || insn_data[icode1].operand[0].mode != intermediate_mode |
947131ba RS |
5059 | || ((icode2 = optab_handler (optab2, prev_mode)) |
5060 | == CODE_FOR_nothing) | |
ebfd146a | 5061 | || insn_data[icode2].operand[0].mode != intermediate_mode |
947131ba RS |
5062 | || ((icode1 = optab_handler (optab3, intermediate_mode)) |
5063 | == CODE_FOR_nothing) | |
5064 | || ((icode2 = optab_handler (optab4, intermediate_mode)) | |
5065 | == CODE_FOR_nothing)) | |
ebfd146a IR |
5066 | return false; |
5067 | ||
5068 | VEC_quick_push (tree, *interm_types, intermediate_type); | |
5069 | (*multi_step_cvt)++; | |
5070 | ||
5071 | if (insn_data[icode1].operand[0].mode == TYPE_MODE (wide_vectype) | |
5072 | && insn_data[icode2].operand[0].mode == TYPE_MODE (wide_vectype)) | |
5073 | return true; | |
5074 | ||
5075 | prev_type = intermediate_type; | |
5076 | prev_mode = intermediate_mode; | |
5077 | } | |
5078 | ||
5079 | return false; | |
5080 | } | |
5081 | ||
5082 | *code1 = c1; | |
5083 | *code2 = c2; | |
5084 | return true; | |
5085 | } | |
5086 | ||
5087 | ||
5088 | /* Function supportable_narrowing_operation | |
5089 | ||
b8698a0f L |
5090 | Check whether an operation represented by the code CODE is a |
5091 | narrowing operation that is supported by the target platform in | |
b690cc0f RG |
5092 | vector form (i.e., when operating on arguments of type VECTYPE_IN |
5093 | and producing a result of type VECTYPE_OUT). | |
b8698a0f | 5094 | |
ebfd146a IR |
5095 | Narrowing operations we currently support are NOP (CONVERT) and |
5096 | FIX_TRUNC. This function checks if these operations are supported by | |
5097 | the target platform directly via vector tree-codes. | |
5098 | ||
5099 | Output: | |
b8698a0f L |
5100 | - CODE1 is the code of a vector operation to be used when |
5101 | vectorizing the operation, if available. | |
ebfd146a IR |
5102 | - MULTI_STEP_CVT determines the number of required intermediate steps in |
5103 | case of multi-step conversion (like int->short->char - in that case | |
5104 | MULTI_STEP_CVT will be 1). | |
5105 | - INTERM_TYPES contains the intermediate type required to perform the | |
b8698a0f | 5106 | narrowing operation (short in the above example). */ |
ebfd146a IR |
5107 | |
5108 | bool | |
5109 | supportable_narrowing_operation (enum tree_code code, | |
b690cc0f | 5110 | tree vectype_out, tree vectype_in, |
ebfd146a IR |
5111 | enum tree_code *code1, int *multi_step_cvt, |
5112 | VEC (tree, heap) **interm_types) | |
5113 | { | |
5114 | enum machine_mode vec_mode; | |
5115 | enum insn_code icode1; | |
5116 | optab optab1, interm_optab; | |
b690cc0f RG |
5117 | tree vectype = vectype_in; |
5118 | tree narrow_vectype = vectype_out; | |
ebfd146a IR |
5119 | enum tree_code c1; |
5120 | tree intermediate_type, prev_type; | |
5121 | int i; | |
5122 | ||
5123 | switch (code) | |
5124 | { | |
5125 | CASE_CONVERT: | |
5126 | c1 = VEC_PACK_TRUNC_EXPR; | |
5127 | break; | |
5128 | ||
5129 | case FIX_TRUNC_EXPR: | |
5130 | c1 = VEC_PACK_FIX_TRUNC_EXPR; | |
5131 | break; | |
5132 | ||
5133 | case FLOAT_EXPR: | |
5134 | /* ??? Not yet implemented due to missing VEC_PACK_FLOAT_EXPR | |
5135 | tree code and optabs used for computing the operation. */ | |
5136 | return false; | |
5137 | ||
5138 | default: | |
5139 | gcc_unreachable (); | |
5140 | } | |
5141 | ||
5142 | if (code == FIX_TRUNC_EXPR) | |
5143 | /* The signedness is determined from output operand. */ | |
b690cc0f | 5144 | optab1 = optab_for_tree_code (c1, vectype_out, optab_default); |
ebfd146a IR |
5145 | else |
5146 | optab1 = optab_for_tree_code (c1, vectype, optab_default); | |
5147 | ||
5148 | if (!optab1) | |
5149 | return false; | |
5150 | ||
5151 | vec_mode = TYPE_MODE (vectype); | |
947131ba | 5152 | if ((icode1 = optab_handler (optab1, vec_mode)) == CODE_FOR_nothing) |
ebfd146a IR |
5153 | return false; |
5154 | ||
5155 | /* Check if it's a multi-step conversion that can be done using intermediate | |
5156 | types. */ | |
5157 | if (insn_data[icode1].operand[0].mode != TYPE_MODE (narrow_vectype)) | |
5158 | { | |
5159 | enum machine_mode intermediate_mode, prev_mode = vec_mode; | |
5160 | ||
5161 | *code1 = c1; | |
5162 | prev_type = vectype; | |
5163 | /* We assume here that there will not be more than MAX_INTERM_CVT_STEPS | |
5164 | intermediate steps in promotion sequence. We try MAX_INTERM_CVT_STEPS | |
5165 | to get to NARROW_VECTYPE, and fail if we do not. */ | |
5166 | *interm_types = VEC_alloc (tree, heap, MAX_INTERM_CVT_STEPS); | |
5167 | for (i = 0; i < 3; i++) | |
5168 | { | |
5169 | intermediate_mode = insn_data[icode1].operand[0].mode; | |
5170 | intermediate_type = lang_hooks.types.type_for_mode (intermediate_mode, | |
5171 | TYPE_UNSIGNED (prev_type)); | |
b8698a0f | 5172 | interm_optab = optab_for_tree_code (c1, intermediate_type, |
ebfd146a | 5173 | optab_default); |
b8698a0f | 5174 | if (!interm_optab |
947131ba RS |
5175 | || ((icode1 = optab_handler (optab1, prev_mode)) |
5176 | == CODE_FOR_nothing) | |
ebfd146a | 5177 | || insn_data[icode1].operand[0].mode != intermediate_mode |
947131ba RS |
5178 | || ((icode1 = optab_handler (interm_optab, intermediate_mode)) |
5179 | == CODE_FOR_nothing)) | |
ebfd146a IR |
5180 | return false; |
5181 | ||
5182 | VEC_quick_push (tree, *interm_types, intermediate_type); | |
5183 | (*multi_step_cvt)++; | |
5184 | ||
5185 | if (insn_data[icode1].operand[0].mode == TYPE_MODE (narrow_vectype)) | |
5186 | return true; | |
5187 | ||
5188 | prev_type = intermediate_type; | |
5189 | prev_mode = intermediate_mode; | |
5190 | } | |
5191 | ||
5192 | return false; | |
5193 | } | |
5194 | ||
5195 | *code1 = c1; | |
5196 | return true; | |
5197 | } |