2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free
3 Software Foundation, Inc.
4 Contributed by Dorit Naishlos <dorit@il.ibm.com>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 #ifndef GCC_TREE_VECTORIZER_H
23 #define GCC_TREE_VECTORIZER_H
25 #include "tree-data-ref.h"
27 typedef source_location LOC;
28 #define UNKNOWN_LOC UNKNOWN_LOCATION
29 #define EXPR_LOC(e) EXPR_LOCATION(e)
30 #define LOC_FILE(l) LOCATION_FILE (l)
31 #define LOC_LINE(l) LOCATION_LINE (l)
33 /* Used for naming of new temporaries. */
40 /* Defines type of operation. */
47 /* Define type of available alignment support. */
48 enum dr_alignment_support {
49 dr_unaligned_unsupported,
50 dr_unaligned_supported,
52 dr_explicit_realign_optimized,
56 /* Define type of def-use cross-iteration cycle. */
58 vect_uninitialized_def = 0,
59 vect_constant_def = 1,
67 /* Define verbosity levels. */
68 enum verbosity_levels {
70 REPORT_VECTORIZED_LOCATIONS,
71 REPORT_UNVECTORIZED_LOCATIONS,
75 REPORT_BAD_FORM_LOOPS,
79 /* New verbosity levels should be added before this one. */
83 /************************************************************************
85 ************************************************************************/
87 /* A computation tree of an SLP instance. Each node corresponds to a group of
88 stmts to be packed in a SIMD stmt. */
89 typedef struct _slp_tree {
90 /* Only binary and unary operations are supported. LEFT child corresponds to
91 the first operand and RIGHT child to the second if the operation is
93 struct _slp_tree *left;
94 struct _slp_tree *right;
95 /* A group of scalar stmts to be vectorized together. */
96 VEC (gimple, heap) *stmts;
97 /* Vectorized stmt/s. */
98 VEC (gimple, heap) *vec_stmts;
99 /* Number of vector stmts that are created to replace the group of scalar
100 stmts. It is calculated during the transformation phase as the number of
101 scalar elements in one scalar iteration (GROUP_SIZE) multiplied by VF
102 divided by vector size. */
103 unsigned int vec_stmts_size;
104 /* Vectorization costs associated with SLP node. */
107 int outside_of_loop; /* Statements generated outside loop. */
108 int inside_of_loop; /* Statements generated inside loop. */
113 DEF_VEC_ALLOC_P(slp_tree, heap);
115 /* SLP instance is a sequence of stmts in a loop that can be packed into
117 typedef struct _slp_instance {
118 /* The root of SLP tree. */
121 /* Size of groups of scalar stmts that will be replaced by SIMD stmt/s. */
122 unsigned int group_size;
124 /* The unrolling factor required to vectorized this SLP instance. */
125 unsigned int unrolling_factor;
127 /* Vectorization costs associated with SLP instance. */
130 int outside_of_loop; /* Statements generated outside loop. */
131 int inside_of_loop; /* Statements generated inside loop. */
134 /* Loads permutation relatively to the stores, NULL if there is no
136 VEC (int, heap) *load_permutation;
138 /* The group of nodes that contain loads of this SLP instance. */
139 VEC (slp_tree, heap) *loads;
141 /* The first scalar load of the instance. The created vector loads will be
142 inserted before this statement. */
146 DEF_VEC_P(slp_instance);
147 DEF_VEC_ALLOC_P(slp_instance, heap);
149 /* Access Functions. */
150 #define SLP_INSTANCE_TREE(S) (S)->root
151 #define SLP_INSTANCE_GROUP_SIZE(S) (S)->group_size
152 #define SLP_INSTANCE_UNROLLING_FACTOR(S) (S)->unrolling_factor
153 #define SLP_INSTANCE_OUTSIDE_OF_LOOP_COST(S) (S)->cost.outside_of_loop
154 #define SLP_INSTANCE_INSIDE_OF_LOOP_COST(S) (S)->cost.inside_of_loop
155 #define SLP_INSTANCE_LOAD_PERMUTATION(S) (S)->load_permutation
156 #define SLP_INSTANCE_LOADS(S) (S)->loads
157 #define SLP_INSTANCE_FIRST_LOAD_STMT(S) (S)->first_load
159 #define SLP_TREE_LEFT(S) (S)->left
160 #define SLP_TREE_RIGHT(S) (S)->right
161 #define SLP_TREE_SCALAR_STMTS(S) (S)->stmts
162 #define SLP_TREE_VEC_STMTS(S) (S)->vec_stmts
163 #define SLP_TREE_NUMBER_OF_VEC_STMTS(S) (S)->vec_stmts_size
164 #define SLP_TREE_OUTSIDE_OF_LOOP_COST(S) (S)->cost.outside_of_loop
165 #define SLP_TREE_INSIDE_OF_LOOP_COST(S) (S)->cost.inside_of_loop
167 /*-----------------------------------------------------------------*/
168 /* Info on vectorized loops. */
169 /*-----------------------------------------------------------------*/
170 typedef struct _loop_vec_info {
172 /* The loop to which this info struct refers to. */
175 /* The loop basic blocks. */
178 /* Number of iterations. */
180 tree num_iters_unchanged;
182 /* Minimum number of iterations below which vectorization is expected to
183 not be profitable (as estimated by the cost model).
184 -1 indicates that vectorization will not be profitable.
185 FORNOW: This field is an int. Will be a tree in the future, to represent
186 values unknown at compile time. */
187 int min_profitable_iters;
189 /* Is the loop vectorizable? */
192 /* Unrolling factor */
193 int vectorization_factor;
195 /* Unknown DRs according to which loop was peeled. */
196 struct data_reference *unaligned_dr;
198 /* peeling_for_alignment indicates whether peeling for alignment will take
199 place, and what the peeling factor should be:
200 peeling_for_alignment = X means:
201 If X=0: Peeling for alignment will not be applied.
202 If X>0: Peel first X iterations.
203 If X=-1: Generate a runtime test to calculate the number of iterations
204 to be peeled, using the dataref recorded in the field
206 int peeling_for_alignment;
208 /* The mask used to check the alignment of pointers or arrays. */
211 /* All data references in the loop. */
212 VEC (data_reference_p, heap) *datarefs;
214 /* All data dependences in the loop. */
215 VEC (ddr_p, heap) *ddrs;
217 /* Data Dependence Relations defining address ranges that are candidates
218 for a run-time aliasing check. */
219 VEC (ddr_p, heap) *may_alias_ddrs;
221 /* Statements in the loop that have data references that are candidates for a
222 runtime (loop versioning) misalignment check. */
223 VEC(gimple,heap) *may_misalign_stmts;
225 /* The loop location in the source. */
226 LOC loop_line_number;
228 /* All interleaving chains of stores in the loop, represented by the first
229 stmt in the chain. */
230 VEC(gimple, heap) *strided_stores;
232 /* All SLP instances in the loop. This is a subset of the set of STRIDED_STORES
234 VEC(slp_instance, heap) *slp_instances;
236 /* The unrolling factor needed to SLP the loop. In case of that pure SLP is
237 applied to the loop, i.e., no unrolling is needed, this is 1. */
238 unsigned slp_unrolling_factor;
241 /* Access Functions. */
242 #define LOOP_VINFO_LOOP(L) (L)->loop
243 #define LOOP_VINFO_BBS(L) (L)->bbs
244 #define LOOP_VINFO_NITERS(L) (L)->num_iters
245 /* Since LOOP_VINFO_NITERS can change after prologue peeling
246 retain total unchanged scalar loop iterations for cost model. */
247 #define LOOP_VINFO_NITERS_UNCHANGED(L) (L)->num_iters_unchanged
248 #define LOOP_VINFO_COST_MODEL_MIN_ITERS(L) (L)->min_profitable_iters
249 #define LOOP_VINFO_VECTORIZABLE_P(L) (L)->vectorizable
250 #define LOOP_VINFO_VECT_FACTOR(L) (L)->vectorization_factor
251 #define LOOP_VINFO_PTR_MASK(L) (L)->ptr_mask
252 #define LOOP_VINFO_DATAREFS(L) (L)->datarefs
253 #define LOOP_VINFO_DDRS(L) (L)->ddrs
254 #define LOOP_VINFO_INT_NITERS(L) (TREE_INT_CST_LOW ((L)->num_iters))
255 #define LOOP_PEELING_FOR_ALIGNMENT(L) (L)->peeling_for_alignment
256 #define LOOP_VINFO_UNALIGNED_DR(L) (L)->unaligned_dr
257 #define LOOP_VINFO_MAY_MISALIGN_STMTS(L) (L)->may_misalign_stmts
258 #define LOOP_VINFO_LOC(L) (L)->loop_line_number
259 #define LOOP_VINFO_MAY_ALIAS_DDRS(L) (L)->may_alias_ddrs
260 #define LOOP_VINFO_STRIDED_STORES(L) (L)->strided_stores
261 #define LOOP_VINFO_SLP_INSTANCES(L) (L)->slp_instances
262 #define LOOP_VINFO_SLP_UNROLLING_FACTOR(L) (L)->slp_unrolling_factor
264 #define NITERS_KNOWN_P(n) \
265 (host_integerp ((n),0) \
266 && TREE_INT_CST_LOW ((n)) > 0)
268 #define LOOP_VINFO_NITERS_KNOWN_P(L) \
269 NITERS_KNOWN_P((L)->num_iters)
271 static inline loop_vec_info
272 loop_vec_info_for_loop (struct loop *loop)
274 return (loop_vec_info) loop->aux;
278 nested_in_vect_loop_p (struct loop *loop, gimple stmt)
281 && (loop->inner == (gimple_bb (stmt))->loop_father));
284 typedef struct _bb_vec_info {
287 /* All interleaving chains of stores in the basic block, represented by the
288 first stmt in the chain. */
289 VEC(gimple, heap) *strided_stores;
291 /* All SLP instances in the basic block. This is a subset of the set of
292 STRIDED_STORES of the basic block. */
293 VEC(slp_instance, heap) *slp_instances;
295 /* All data references in the basic block. */
296 VEC (data_reference_p, heap) *datarefs;
298 /* All data dependences in the basic block. */
299 VEC (ddr_p, heap) *ddrs;
302 #define BB_VINFO_BB(B) (B)->bb
303 #define BB_VINFO_STRIDED_STORES(B) (B)->strided_stores
304 #define BB_VINFO_SLP_INSTANCES(B) (B)->slp_instances
305 #define BB_VINFO_DATAREFS(B) (B)->datarefs
306 #define BB_VINFO_DDRS(B) (B)->ddrs
308 static inline bb_vec_info
309 vec_info_for_bb (basic_block bb)
311 return (bb_vec_info) bb->aux;
314 /*-----------------------------------------------------------------*/
315 /* Info on vectorized defs. */
316 /*-----------------------------------------------------------------*/
317 enum stmt_vec_info_type {
318 undef_vec_info_type = 0,
323 assignment_vec_info_type,
324 condition_vec_info_type,
327 type_promotion_vec_info_type,
328 type_demotion_vec_info_type,
329 type_conversion_vec_info_type,
330 loop_exit_ctrl_vec_info_type
333 /* Indicates whether/how a variable is used in the scope of loop/basic
336 vect_unused_in_scope = 0,
337 vect_used_in_outer_by_reduction,
340 /* defs that feed computations that end up (only) in a reduction. These
341 defs may be used by non-reduction stmts, but eventually, any
342 computations/values that are affected by these defs are used to compute
343 a reduction (i.e. don't get stored to memory, for example). We use this
344 to identify computations that we can change the order in which they are
346 vect_used_by_reduction,
351 /* The type of vectorization that can be applied to the stmt: regular loop-based
352 vectorization; pure SLP - the stmt is a part of SLP instances and does not
353 have uses outside SLP instances; or hybrid SLP and loop-based - the stmt is
354 a part of SLP instance and also must be loop-based vectorized, since it has
355 uses outside SLP sequences.
357 In the loop context the meanings of pure and hybrid SLP are slightly
358 different. By saying that pure SLP is applied to the loop, we mean that we
359 exploit only intra-iteration parallelism in the loop; i.e., the loop can be
360 vectorized without doing any conceptual unrolling, cause we don't pack
361 together stmts from different iterations, only within a single iteration.
362 Loop hybrid SLP means that we exploit both intra-iteration and
363 inter-iteration parallelism (e.g., number of elements in the vector is 4
364 and the slp-group-size is 2, in which case we don't have enough parallelism
365 within an iteration, so we obtain the rest of the parallelism from subsequent
366 iterations by unrolling the loop by 2). */
374 typedef struct data_reference *dr_p;
376 DEF_VEC_ALLOC_P(dr_p,heap);
378 typedef struct _stmt_vec_info {
380 enum stmt_vec_info_type type;
382 /* The stmt to which this info struct refers to. */
385 /* The loop_vec_info with respect to which STMT is vectorized. */
386 loop_vec_info loop_vinfo;
388 /* Not all stmts in the loop need to be vectorized. e.g, the increment
389 of the loop induction variable and computation of array indexes. relevant
390 indicates whether the stmt needs to be vectorized. */
391 enum vect_relevant relevant;
393 /* Indicates whether this stmts is part of a computation whose result is
394 used outside the loop. */
397 /* The vector type to be used. */
400 /* The vectorized version of the stmt. */
401 gimple vectorized_stmt;
404 /** The following is relevant only for stmts that contain a non-scalar
405 data-ref (array/pointer/struct access). A GIMPLE stmt is expected to have
406 at most one such data-ref. **/
408 /* Information about the data-ref (access function, etc),
409 relative to the inner-most containing loop. */
410 struct data_reference *data_ref_info;
412 /* Information about the data-ref relative to this loop
413 nest (the loop that is being considered for vectorization). */
414 tree dr_base_address;
420 /* Stmt is part of some pattern (computation idiom) */
423 /* Used for various bookkeeping purposes, generally holding a pointer to
424 some other stmt S that is in some way "related" to this stmt.
425 Current use of this field is:
426 If this stmt is part of a pattern (i.e. the field 'in_pattern_p' is
427 true): S is the "pattern stmt" that represents (and replaces) the
428 sequence of stmts that constitutes the pattern. Similarly, the
429 related_stmt of the "pattern stmt" points back to this stmt (which is
430 the last stmt in the original sequence of stmts that constitutes the
434 /* List of datarefs that are known to have the same alignment as the dataref
436 VEC(dr_p,heap) *same_align_refs;
438 /* Classify the def of this stmt. */
439 enum vect_def_type def_type;
441 /* Interleaving info. */
442 /* First data-ref in the interleaving group. */
444 /* Pointer to the next data-ref in the group. */
446 /* The size of the interleaving group. */
448 /* For stores, number of stores from this group seen. We vectorize the last
450 unsigned int store_count;
451 /* For loads only, the gap from the previous load. For consecutive loads, GAP
454 /* In case that two or more stmts share data-ref, this is the pointer to the
455 previously detected stmt with the same dr. */
457 /* For loads only, if there is a store with the same location, this field is
461 /* Vectorization costs associated with statement. */
464 int outside_of_loop; /* Statements generated outside loop. */
465 int inside_of_loop; /* Statements generated inside loop. */
468 /* Whether the stmt is SLPed, loop-based vectorized, or both. */
469 enum slp_vect_type slp_type;
471 /* The bb_vec_info with respect to which STMT is vectorized. */
472 bb_vec_info bb_vinfo;
475 /* Access Functions. */
476 #define STMT_VINFO_TYPE(S) (S)->type
477 #define STMT_VINFO_STMT(S) (S)->stmt
478 #define STMT_VINFO_LOOP_VINFO(S) (S)->loop_vinfo
479 #define STMT_VINFO_BB_VINFO(S) (S)->bb_vinfo
480 #define STMT_VINFO_RELEVANT(S) (S)->relevant
481 #define STMT_VINFO_LIVE_P(S) (S)->live
482 #define STMT_VINFO_VECTYPE(S) (S)->vectype
483 #define STMT_VINFO_VEC_STMT(S) (S)->vectorized_stmt
484 #define STMT_VINFO_DATA_REF(S) (S)->data_ref_info
486 #define STMT_VINFO_DR_BASE_ADDRESS(S) (S)->dr_base_address
487 #define STMT_VINFO_DR_INIT(S) (S)->dr_init
488 #define STMT_VINFO_DR_OFFSET(S) (S)->dr_offset
489 #define STMT_VINFO_DR_STEP(S) (S)->dr_step
490 #define STMT_VINFO_DR_ALIGNED_TO(S) (S)->dr_aligned_to
492 #define STMT_VINFO_IN_PATTERN_P(S) (S)->in_pattern_p
493 #define STMT_VINFO_RELATED_STMT(S) (S)->related_stmt
494 #define STMT_VINFO_SAME_ALIGN_REFS(S) (S)->same_align_refs
495 #define STMT_VINFO_DEF_TYPE(S) (S)->def_type
496 #define STMT_VINFO_DR_GROUP_FIRST_DR(S) (S)->first_dr
497 #define STMT_VINFO_DR_GROUP_NEXT_DR(S) (S)->next_dr
498 #define STMT_VINFO_DR_GROUP_SIZE(S) (S)->size
499 #define STMT_VINFO_DR_GROUP_STORE_COUNT(S) (S)->store_count
500 #define STMT_VINFO_DR_GROUP_GAP(S) (S)->gap
501 #define STMT_VINFO_DR_GROUP_SAME_DR_STMT(S)(S)->same_dr_stmt
502 #define STMT_VINFO_DR_GROUP_READ_WRITE_DEPENDENCE(S) (S)->read_write_dep
503 #define STMT_VINFO_STRIDED_ACCESS(S) ((S)->first_dr != NULL)
505 #define DR_GROUP_FIRST_DR(S) (S)->first_dr
506 #define DR_GROUP_NEXT_DR(S) (S)->next_dr
507 #define DR_GROUP_SIZE(S) (S)->size
508 #define DR_GROUP_STORE_COUNT(S) (S)->store_count
509 #define DR_GROUP_GAP(S) (S)->gap
510 #define DR_GROUP_SAME_DR_STMT(S) (S)->same_dr_stmt
511 #define DR_GROUP_READ_WRITE_DEPENDENCE(S) (S)->read_write_dep
513 #define STMT_VINFO_RELEVANT_P(S) ((S)->relevant != vect_unused_in_scope)
514 #define STMT_VINFO_OUTSIDE_OF_LOOP_COST(S) (S)->cost.outside_of_loop
515 #define STMT_VINFO_INSIDE_OF_LOOP_COST(S) (S)->cost.inside_of_loop
517 #define HYBRID_SLP_STMT(S) ((S)->slp_type == hybrid)
518 #define PURE_SLP_STMT(S) ((S)->slp_type == pure_slp)
519 #define STMT_SLP_TYPE(S) (S)->slp_type
521 /* These are some defines for the initial implementation of the vectorizer's
522 cost model. These will later be target specific hooks. */
524 /* Cost of conditional taken branch. */
525 #ifndef TARG_COND_TAKEN_BRANCH_COST
526 #define TARG_COND_TAKEN_BRANCH_COST 3
529 /* Cost of conditional not taken branch. */
530 #ifndef TARG_COND_NOT_TAKEN_BRANCH_COST
531 #define TARG_COND_NOT_TAKEN_BRANCH_COST 1
534 /* Cost of any scalar operation, excluding load and store. */
535 #ifndef TARG_SCALAR_STMT_COST
536 #define TARG_SCALAR_STMT_COST 1
539 /* Cost of scalar load. */
540 #ifndef TARG_SCALAR_LOAD_COST
541 #define TARG_SCALAR_LOAD_COST 1
544 /* Cost of scalar store. */
545 #ifndef TARG_SCALAR_STORE_COST
546 #define TARG_SCALAR_STORE_COST 1
549 /* Cost of any vector operation, excluding load, store or vector to scalar
551 #ifndef TARG_VEC_STMT_COST
552 #define TARG_VEC_STMT_COST 1
555 /* Cost of vector to scalar operation. */
556 #ifndef TARG_VEC_TO_SCALAR_COST
557 #define TARG_VEC_TO_SCALAR_COST 1
560 /* Cost of scalar to vector operation. */
561 #ifndef TARG_SCALAR_TO_VEC_COST
562 #define TARG_SCALAR_TO_VEC_COST 1
565 /* Cost of aligned vector load. */
566 #ifndef TARG_VEC_LOAD_COST
567 #define TARG_VEC_LOAD_COST 1
570 /* Cost of misaligned vector load. */
571 #ifndef TARG_VEC_UNALIGNED_LOAD_COST
572 #define TARG_VEC_UNALIGNED_LOAD_COST 2
575 /* Cost of vector store. */
576 #ifndef TARG_VEC_STORE_COST
577 #define TARG_VEC_STORE_COST 1
580 /* Cost of vector permutation. */
581 #ifndef TARG_VEC_PERMUTE_COST
582 #define TARG_VEC_PERMUTE_COST 1
585 /* The maximum number of intermediate steps required in multi-step type
587 #define MAX_INTERM_CVT_STEPS 3
589 /* Avoid GTY(()) on stmt_vec_info. */
590 typedef void *vec_void_p;
591 DEF_VEC_P (vec_void_p);
592 DEF_VEC_ALLOC_P (vec_void_p, heap);
594 extern VEC(vec_void_p,heap) *stmt_vec_info_vec;
596 void init_stmt_vec_info_vec (void);
597 void free_stmt_vec_info_vec (void);
599 static inline stmt_vec_info
600 vinfo_for_stmt (gimple stmt)
602 unsigned int uid = gimple_uid (stmt);
606 gcc_assert (uid <= VEC_length (vec_void_p, stmt_vec_info_vec));
607 return (stmt_vec_info) VEC_index (vec_void_p, stmt_vec_info_vec, uid - 1);
611 set_vinfo_for_stmt (gimple stmt, stmt_vec_info info)
613 unsigned int uid = gimple_uid (stmt);
617 uid = VEC_length (vec_void_p, stmt_vec_info_vec) + 1;
618 gimple_set_uid (stmt, uid);
619 VEC_safe_push (vec_void_p, heap, stmt_vec_info_vec, (vec_void_p) info);
622 VEC_replace (vec_void_p, stmt_vec_info_vec, uid - 1, (vec_void_p) info);
626 get_earlier_stmt (gimple stmt1, gimple stmt2)
628 unsigned int uid1, uid2;
636 uid1 = gimple_uid (stmt1);
637 uid2 = gimple_uid (stmt2);
639 if (uid1 == 0 || uid2 == 0)
642 gcc_assert (uid1 <= VEC_length (vec_void_p, stmt_vec_info_vec));
643 gcc_assert (uid2 <= VEC_length (vec_void_p, stmt_vec_info_vec));
652 is_pattern_stmt_p (stmt_vec_info stmt_info)
655 stmt_vec_info related_stmt_info;
657 related_stmt = STMT_VINFO_RELATED_STMT (stmt_info);
659 && (related_stmt_info = vinfo_for_stmt (related_stmt))
660 && STMT_VINFO_IN_PATTERN_P (related_stmt_info))
667 is_loop_header_bb_p (basic_block bb)
669 if (bb == (bb->loop_father)->header)
671 gcc_assert (EDGE_COUNT (bb->preds) == 1);
676 stmt_vinfo_set_inside_of_loop_cost (stmt_vec_info stmt_info, slp_tree slp_node,
680 SLP_TREE_INSIDE_OF_LOOP_COST (slp_node) = cost;
682 STMT_VINFO_INSIDE_OF_LOOP_COST (stmt_info) = cost;
686 stmt_vinfo_set_outside_of_loop_cost (stmt_vec_info stmt_info, slp_tree slp_node,
690 SLP_TREE_OUTSIDE_OF_LOOP_COST (slp_node) = cost;
692 STMT_VINFO_OUTSIDE_OF_LOOP_COST (stmt_info) = cost;
700 for (i = 0; i < x; i++)
706 /*-----------------------------------------------------------------*/
707 /* Info on data references alignment. */
708 /*-----------------------------------------------------------------*/
710 /* Reflects actual alignment of first access in the vectorized loop,
711 taking into account peeling/versioning if applied. */
712 #define DR_MISALIGNMENT(DR) ((int) (size_t) (DR)->aux)
713 #define SET_DR_MISALIGNMENT(DR, VAL) ((DR)->aux = (void *) (size_t) (VAL))
716 aligned_access_p (struct data_reference *data_ref_info)
718 return (DR_MISALIGNMENT (data_ref_info) == 0);
722 known_alignment_for_access_p (struct data_reference *data_ref_info)
724 return (DR_MISALIGNMENT (data_ref_info) != -1);
727 /* vect_dump will be set to stderr or dump_file if exist. */
728 extern FILE *vect_dump;
729 extern LOC vect_loop_location;
731 /*-----------------------------------------------------------------*/
732 /* Function prototypes. */
733 /*-----------------------------------------------------------------*/
735 /* Simple loop peeling and versioning utilities for vectorizer's purposes -
736 in tree-vect-loop-manip.c. */
737 extern void slpeel_make_loop_iterate_ntimes (struct loop *, tree);
738 extern bool slpeel_can_duplicate_loop_p (const struct loop *, const_edge);
739 extern void vect_loop_versioning (loop_vec_info, bool, tree *, gimple_seq *);
740 extern void vect_do_peeling_for_loop_bound (loop_vec_info, tree *,
742 extern void vect_do_peeling_for_alignment (loop_vec_info);
743 extern LOC find_loop_location (struct loop *);
744 extern bool vect_can_advance_ivs_p (loop_vec_info);
746 /* In tree-vect-stmts.c. */
747 extern tree get_vectype_for_scalar_type (tree);
748 extern bool vect_is_simple_use (tree, loop_vec_info, bb_vec_info, gimple *,
749 tree *, enum vect_def_type *);
750 extern bool supportable_widening_operation (enum tree_code, gimple, tree,
751 tree *, tree *, enum tree_code *,
752 enum tree_code *, int *,
753 VEC (tree, heap) **);
754 extern bool supportable_narrowing_operation (enum tree_code, const_gimple,
755 tree, enum tree_code *, int *,
756 VEC (tree, heap) **);
757 extern stmt_vec_info new_stmt_vec_info (gimple stmt, loop_vec_info,
759 extern void free_stmt_vec_info (gimple stmt);
760 extern tree vectorizable_function (gimple, tree, tree);
761 extern void vect_model_simple_cost (stmt_vec_info, int, enum vect_def_type *,
763 extern void vect_model_store_cost (stmt_vec_info, int, enum vect_def_type,
765 extern void vect_model_load_cost (stmt_vec_info, int, slp_tree);
766 extern void vect_finish_stmt_generation (gimple, gimple,
767 gimple_stmt_iterator *);
768 extern bool vect_mark_stmts_to_be_vectorized (loop_vec_info);
769 extern int cost_for_stmt (gimple);
770 extern tree vect_get_vec_def_for_operand (tree, gimple, tree *);
771 extern tree vect_init_vector (gimple, tree, tree,
772 gimple_stmt_iterator *);
773 extern tree vect_get_vec_def_for_stmt_copy (enum vect_def_type, tree);
774 extern bool vect_transform_stmt (gimple, gimple_stmt_iterator *,
775 bool *, slp_tree, slp_instance);
776 extern void vect_remove_stores (gimple);
777 extern bool vect_analyze_stmt (gimple, bool *, slp_tree);
779 /* In tree-vect-data-refs.c. */
780 extern bool vect_can_force_dr_alignment_p (const_tree, unsigned int);
781 extern enum dr_alignment_support vect_supportable_dr_alignment
782 (struct data_reference *);
783 extern tree vect_get_smallest_scalar_type (gimple, HOST_WIDE_INT *,
785 extern bool vect_analyze_data_ref_dependences (loop_vec_info, bb_vec_info);
786 extern bool vect_enhance_data_refs_alignment (loop_vec_info);
787 extern bool vect_analyze_data_refs_alignment (loop_vec_info, bb_vec_info);
788 extern bool vect_verify_datarefs_alignment (loop_vec_info, bb_vec_info);
789 extern bool vect_analyze_data_ref_accesses (loop_vec_info, bb_vec_info);
790 extern bool vect_prune_runtime_alias_test_list (loop_vec_info);
791 extern bool vect_analyze_data_refs (loop_vec_info, bb_vec_info);
792 extern tree vect_create_data_ref_ptr (gimple, struct loop *, tree, tree *,
793 gimple *, bool, bool *);
794 extern tree bump_vector_ptr (tree, gimple, gimple_stmt_iterator *, gimple, tree);
795 extern tree vect_create_destination_var (tree, tree);
796 extern bool vect_strided_store_supported (tree);
797 extern bool vect_strided_load_supported (tree);
798 extern bool vect_permute_store_chain (VEC(tree,heap) *,unsigned int, gimple,
799 gimple_stmt_iterator *, VEC(tree,heap) **);
800 extern tree vect_setup_realignment (gimple, gimple_stmt_iterator *, tree *,
801 enum dr_alignment_support, tree,
803 extern bool vect_permute_load_chain (VEC(tree,heap) *,unsigned int, gimple,
804 gimple_stmt_iterator *, VEC(tree,heap) **);
805 extern bool vect_transform_strided_load (gimple, VEC(tree,heap) *, int,
806 gimple_stmt_iterator *);
807 extern int vect_get_place_in_interleaving_chain (gimple, gimple);
808 extern tree vect_get_new_vect_var (tree, enum vect_var_kind, const char *);
809 extern tree vect_create_addr_base_for_vector_ref (gimple, gimple_seq *,
810 tree, struct loop *);
812 /* In tree-vect-loop.c. */
813 /* FORNOW: Used in tree-parloops.c. */
814 extern void destroy_loop_vec_info (loop_vec_info, bool);
815 extern gimple vect_is_simple_reduction (loop_vec_info, gimple);
816 /* Drive for loop analysis stage. */
817 extern loop_vec_info vect_analyze_loop (struct loop *);
818 /* Drive for loop transformation stage. */
819 extern void vect_transform_loop (loop_vec_info);
820 extern loop_vec_info vect_analyze_loop_form (struct loop *);
821 extern bool vectorizable_live_operation (gimple, gimple_stmt_iterator *,
823 extern bool vectorizable_reduction (gimple, gimple_stmt_iterator *, gimple *);
824 extern bool vectorizable_induction (gimple, gimple_stmt_iterator *, gimple *);
825 extern int vect_estimate_min_profitable_iters (loop_vec_info);
826 extern tree get_initial_def_for_reduction (gimple, tree, tree *);
827 extern int vect_min_worthwhile_factor (enum tree_code);
830 /* In tree-vect-slp.c. */
831 extern void vect_free_slp_instance (slp_instance);
832 extern bool vect_transform_slp_perm_load (gimple, VEC (tree, heap) *,
833 gimple_stmt_iterator *, int,
835 extern bool vect_schedule_slp (loop_vec_info, bb_vec_info);
836 extern void vect_update_slp_costs_according_to_vf (loop_vec_info);
837 extern bool vect_analyze_slp (loop_vec_info, bb_vec_info);
838 extern void vect_make_slp_decision (loop_vec_info);
839 extern void vect_detect_hybrid_slp (loop_vec_info);
840 extern void vect_get_slp_defs (slp_tree, VEC (tree,heap) **,
842 extern LOC find_bb_location (basic_block);
843 extern bb_vec_info vect_slp_analyze_bb (basic_block);
844 extern void vect_slp_transform_bb (basic_block);
846 /* In tree-vect-patterns.c. */
847 /* Pattern recognition functions.
848 Additional pattern recognition functions can (and will) be added
850 typedef gimple (* vect_recog_func_ptr) (gimple, tree *, tree *);
851 #define NUM_PATTERNS 4
852 void vect_pattern_recog (loop_vec_info);
854 /* Vectorization debug information - in tree-vectorizer.c. */
855 extern bool vect_print_dump_info (enum verbosity_levels);
856 extern void vect_set_verbosity_level (const char *);
858 #endif /* GCC_TREE_VECTORIZER_H */