Mercurial > hg > CbC > CbC_gcc
annotate gcc/tree-vectorizer.h @ 63:b7f97abdc517 gcc-4.6-20100522
update gcc from gcc-4.5.0 to gcc-4.6
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
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| date | Mon, 24 May 2010 12:47:05 +0900 |
| parents | 77e2b8dfacca |
| children | f6334be47118 |
| rev | line source |
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1 /* Vectorizer |
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2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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3 Free Software Foundation, Inc. |
| 0 | 4 Contributed by Dorit Naishlos <dorit@il.ibm.com> |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 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 | |
| 11 version. | |
| 12 | |
| 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 | |
| 16 for more details. | |
| 17 | |
| 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/>. */ | |
| 21 | |
| 22 #ifndef GCC_TREE_VECTORIZER_H | |
| 23 #define GCC_TREE_VECTORIZER_H | |
| 24 | |
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25 #include "tree-data-ref.h" |
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26 |
| 0 | 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) | |
| 32 | |
| 33 /* Used for naming of new temporaries. */ | |
| 34 enum vect_var_kind { | |
| 35 vect_simple_var, | |
| 36 vect_pointer_var, | |
| 37 vect_scalar_var | |
| 38 }; | |
| 39 | |
| 40 /* Defines type of operation. */ | |
| 41 enum operation_type { | |
| 42 unary_op = 1, | |
| 43 binary_op, | |
| 44 ternary_op | |
| 45 }; | |
| 46 | |
| 47 /* Define type of available alignment support. */ | |
| 48 enum dr_alignment_support { | |
| 49 dr_unaligned_unsupported, | |
| 50 dr_unaligned_supported, | |
| 51 dr_explicit_realign, | |
| 52 dr_explicit_realign_optimized, | |
| 53 dr_aligned | |
| 54 }; | |
| 55 | |
| 56 /* Define type of def-use cross-iteration cycle. */ | |
| 57 enum vect_def_type { | |
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58 vect_uninitialized_def = 0, |
| 0 | 59 vect_constant_def = 1, |
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60 vect_external_def, |
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61 vect_internal_def, |
| 0 | 62 vect_induction_def, |
| 63 vect_reduction_def, | |
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64 vect_double_reduction_def, |
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65 vect_nested_cycle, |
| 0 | 66 vect_unknown_def_type |
| 67 }; | |
| 68 | |
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69 #define VECTORIZABLE_CYCLE_DEF(D) (((D) == vect_reduction_def) \ |
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70 || ((D) == vect_double_reduction_def) \ |
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71 || ((D) == vect_nested_cycle)) |
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72 |
| 0 | 73 /* Define verbosity levels. */ |
| 74 enum verbosity_levels { | |
| 75 REPORT_NONE, | |
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76 REPORT_VECTORIZED_LOCATIONS, |
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77 REPORT_UNVECTORIZED_LOCATIONS, |
| 0 | 78 REPORT_COST, |
| 79 REPORT_ALIGNMENT, | |
| 80 REPORT_DR_DETAILS, | |
| 81 REPORT_BAD_FORM_LOOPS, | |
| 82 REPORT_OUTER_LOOPS, | |
| 83 REPORT_SLP, | |
| 84 REPORT_DETAILS, | |
| 85 /* New verbosity levels should be added before this one. */ | |
| 86 MAX_VERBOSITY_LEVEL | |
| 87 }; | |
| 88 | |
| 89 /************************************************************************ | |
| 90 SLP | |
| 91 ************************************************************************/ | |
| 92 | |
| 93 /* A computation tree of an SLP instance. Each node corresponds to a group of | |
| 94 stmts to be packed in a SIMD stmt. */ | |
| 95 typedef struct _slp_tree { | |
| 96 /* Only binary and unary operations are supported. LEFT child corresponds to | |
| 97 the first operand and RIGHT child to the second if the operation is | |
| 98 binary. */ | |
| 99 struct _slp_tree *left; | |
| 100 struct _slp_tree *right; | |
| 101 /* A group of scalar stmts to be vectorized together. */ | |
| 102 VEC (gimple, heap) *stmts; | |
| 103 /* Vectorized stmt/s. */ | |
| 104 VEC (gimple, heap) *vec_stmts; | |
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105 /* Number of vector stmts that are created to replace the group of scalar |
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106 stmts. It is calculated during the transformation phase as the number of |
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107 scalar elements in one scalar iteration (GROUP_SIZE) multiplied by VF |
| 0 | 108 divided by vector size. */ |
| 109 unsigned int vec_stmts_size; | |
| 110 /* Vectorization costs associated with SLP node. */ | |
| 111 struct | |
| 112 { | |
| 113 int outside_of_loop; /* Statements generated outside loop. */ | |
| 114 int inside_of_loop; /* Statements generated inside loop. */ | |
| 115 } cost; | |
| 116 } *slp_tree; | |
| 117 | |
| 118 DEF_VEC_P(slp_tree); | |
| 119 DEF_VEC_ALLOC_P(slp_tree, heap); | |
| 120 | |
| 121 /* SLP instance is a sequence of stmts in a loop that can be packed into | |
| 122 SIMD stmts. */ | |
| 123 typedef struct _slp_instance { | |
| 124 /* The root of SLP tree. */ | |
| 125 slp_tree root; | |
| 126 | |
| 127 /* Size of groups of scalar stmts that will be replaced by SIMD stmt/s. */ | |
| 128 unsigned int group_size; | |
| 129 | |
| 130 /* The unrolling factor required to vectorized this SLP instance. */ | |
| 131 unsigned int unrolling_factor; | |
| 132 | |
| 133 /* Vectorization costs associated with SLP instance. */ | |
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134 struct |
| 0 | 135 { |
| 136 int outside_of_loop; /* Statements generated outside loop. */ | |
| 137 int inside_of_loop; /* Statements generated inside loop. */ | |
| 138 } cost; | |
| 139 | |
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140 /* Loads permutation relatively to the stores, NULL if there is no |
| 0 | 141 permutation. */ |
| 142 VEC (int, heap) *load_permutation; | |
| 143 | |
| 144 /* The group of nodes that contain loads of this SLP instance. */ | |
| 145 VEC (slp_tree, heap) *loads; | |
| 146 | |
| 147 /* The first scalar load of the instance. The created vector loads will be | |
| 148 inserted before this statement. */ | |
| 149 gimple first_load; | |
| 150 } *slp_instance; | |
| 151 | |
| 152 DEF_VEC_P(slp_instance); | |
| 153 DEF_VEC_ALLOC_P(slp_instance, heap); | |
| 154 | |
| 155 /* Access Functions. */ | |
| 156 #define SLP_INSTANCE_TREE(S) (S)->root | |
| 157 #define SLP_INSTANCE_GROUP_SIZE(S) (S)->group_size | |
| 158 #define SLP_INSTANCE_UNROLLING_FACTOR(S) (S)->unrolling_factor | |
| 159 #define SLP_INSTANCE_OUTSIDE_OF_LOOP_COST(S) (S)->cost.outside_of_loop | |
| 160 #define SLP_INSTANCE_INSIDE_OF_LOOP_COST(S) (S)->cost.inside_of_loop | |
| 161 #define SLP_INSTANCE_LOAD_PERMUTATION(S) (S)->load_permutation | |
| 162 #define SLP_INSTANCE_LOADS(S) (S)->loads | |
| 163 #define SLP_INSTANCE_FIRST_LOAD_STMT(S) (S)->first_load | |
| 164 | |
| 165 #define SLP_TREE_LEFT(S) (S)->left | |
| 166 #define SLP_TREE_RIGHT(S) (S)->right | |
| 167 #define SLP_TREE_SCALAR_STMTS(S) (S)->stmts | |
| 168 #define SLP_TREE_VEC_STMTS(S) (S)->vec_stmts | |
| 169 #define SLP_TREE_NUMBER_OF_VEC_STMTS(S) (S)->vec_stmts_size | |
| 170 #define SLP_TREE_OUTSIDE_OF_LOOP_COST(S) (S)->cost.outside_of_loop | |
| 171 #define SLP_TREE_INSIDE_OF_LOOP_COST(S) (S)->cost.inside_of_loop | |
| 172 | |
| 173 /*-----------------------------------------------------------------*/ | |
| 174 /* Info on vectorized loops. */ | |
| 175 /*-----------------------------------------------------------------*/ | |
| 176 typedef struct _loop_vec_info { | |
| 177 | |
| 178 /* The loop to which this info struct refers to. */ | |
| 179 struct loop *loop; | |
| 180 | |
| 181 /* The loop basic blocks. */ | |
| 182 basic_block *bbs; | |
| 183 | |
| 184 /* Number of iterations. */ | |
| 185 tree num_iters; | |
| 186 tree num_iters_unchanged; | |
| 187 | |
| 188 /* Minimum number of iterations below which vectorization is expected to | |
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189 not be profitable (as estimated by the cost model). |
| 0 | 190 -1 indicates that vectorization will not be profitable. |
| 191 FORNOW: This field is an int. Will be a tree in the future, to represent | |
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192 values unknown at compile time. */ |
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193 int min_profitable_iters; |
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194 |
| 0 | 195 /* Is the loop vectorizable? */ |
| 196 bool vectorizable; | |
| 197 | |
| 198 /* Unrolling factor */ | |
| 199 int vectorization_factor; | |
| 200 | |
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201 /* The loop location in the source. */ |
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202 LOC loop_line_number; |
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203 |
| 0 | 204 /* Unknown DRs according to which loop was peeled. */ |
| 205 struct data_reference *unaligned_dr; | |
| 206 | |
| 207 /* peeling_for_alignment indicates whether peeling for alignment will take | |
| 208 place, and what the peeling factor should be: | |
| 209 peeling_for_alignment = X means: | |
| 210 If X=0: Peeling for alignment will not be applied. | |
| 211 If X>0: Peel first X iterations. | |
| 212 If X=-1: Generate a runtime test to calculate the number of iterations | |
| 213 to be peeled, using the dataref recorded in the field | |
| 214 unaligned_dr. */ | |
| 215 int peeling_for_alignment; | |
| 216 | |
| 217 /* The mask used to check the alignment of pointers or arrays. */ | |
| 218 int ptr_mask; | |
| 219 | |
| 220 /* All data references in the loop. */ | |
| 221 VEC (data_reference_p, heap) *datarefs; | |
| 222 | |
| 223 /* All data dependences in the loop. */ | |
| 224 VEC (ddr_p, heap) *ddrs; | |
| 225 | |
| 226 /* Data Dependence Relations defining address ranges that are candidates | |
| 227 for a run-time aliasing check. */ | |
| 228 VEC (ddr_p, heap) *may_alias_ddrs; | |
| 229 | |
| 230 /* Statements in the loop that have data references that are candidates for a | |
| 231 runtime (loop versioning) misalignment check. */ | |
| 232 VEC(gimple,heap) *may_misalign_stmts; | |
| 233 | |
| 234 /* All interleaving chains of stores in the loop, represented by the first | |
| 235 stmt in the chain. */ | |
| 236 VEC(gimple, heap) *strided_stores; | |
| 237 | |
| 238 /* All SLP instances in the loop. This is a subset of the set of STRIDED_STORES | |
| 239 of the loop. */ | |
| 240 VEC(slp_instance, heap) *slp_instances; | |
| 241 | |
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242 /* The unrolling factor needed to SLP the loop. In case of that pure SLP is |
| 0 | 243 applied to the loop, i.e., no unrolling is needed, this is 1. */ |
| 244 unsigned slp_unrolling_factor; | |
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245 |
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246 /* Reduction cycles detected in the loop. Used in loop-aware SLP. */ |
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247 VEC (gimple, heap) *reductions; |
| 0 | 248 } *loop_vec_info; |
| 249 | |
| 250 /* Access Functions. */ | |
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251 #define LOOP_VINFO_LOOP(L) (L)->loop |
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252 #define LOOP_VINFO_BBS(L) (L)->bbs |
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253 #define LOOP_VINFO_NITERS(L) (L)->num_iters |
| 0 | 254 /* Since LOOP_VINFO_NITERS can change after prologue peeling |
| 255 retain total unchanged scalar loop iterations for cost model. */ | |
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256 #define LOOP_VINFO_NITERS_UNCHANGED(L) (L)->num_iters_unchanged |
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257 #define LOOP_VINFO_COST_MODEL_MIN_ITERS(L) (L)->min_profitable_iters |
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258 #define LOOP_VINFO_VECTORIZABLE_P(L) (L)->vectorizable |
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259 #define LOOP_VINFO_VECT_FACTOR(L) (L)->vectorization_factor |
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260 #define LOOP_VINFO_PTR_MASK(L) (L)->ptr_mask |
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261 #define LOOP_VINFO_DATAREFS(L) (L)->datarefs |
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262 #define LOOP_VINFO_DDRS(L) (L)->ddrs |
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263 #define LOOP_VINFO_INT_NITERS(L) (TREE_INT_CST_LOW ((L)->num_iters)) |
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264 #define LOOP_PEELING_FOR_ALIGNMENT(L) (L)->peeling_for_alignment |
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265 #define LOOP_VINFO_UNALIGNED_DR(L) (L)->unaligned_dr |
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266 #define LOOP_VINFO_MAY_MISALIGN_STMTS(L) (L)->may_misalign_stmts |
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267 #define LOOP_VINFO_LOC(L) (L)->loop_line_number |
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268 #define LOOP_VINFO_MAY_ALIAS_DDRS(L) (L)->may_alias_ddrs |
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269 #define LOOP_VINFO_STRIDED_STORES(L) (L)->strided_stores |
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270 #define LOOP_VINFO_SLP_INSTANCES(L) (L)->slp_instances |
| 0 | 271 #define LOOP_VINFO_SLP_UNROLLING_FACTOR(L) (L)->slp_unrolling_factor |
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272 #define LOOP_VINFO_REDUCTIONS(L) (L)->reductions |
| 0 | 273 |
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274 #define LOOP_REQUIRES_VERSIONING_FOR_ALIGNMENT(L) \ |
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275 VEC_length (gimple, (L)->may_misalign_stmts) > 0 |
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276 #define LOOP_REQUIRES_VERSIONING_FOR_ALIAS(L) \ |
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277 VEC_length (ddr_p, (L)->may_alias_ddrs) > 0 |
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278 |
| 0 | 279 #define NITERS_KNOWN_P(n) \ |
| 280 (host_integerp ((n),0) \ | |
| 281 && TREE_INT_CST_LOW ((n)) > 0) | |
| 282 | |
|
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283 #define LOOP_VINFO_NITERS_KNOWN_P(L) \ |
| 0 | 284 NITERS_KNOWN_P((L)->num_iters) |
| 285 | |
| 286 static inline loop_vec_info | |
| 287 loop_vec_info_for_loop (struct loop *loop) | |
| 288 { | |
| 289 return (loop_vec_info) loop->aux; | |
| 290 } | |
| 291 | |
| 292 static inline bool | |
| 293 nested_in_vect_loop_p (struct loop *loop, gimple stmt) | |
| 294 { | |
|
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295 return (loop->inner |
| 0 | 296 && (loop->inner == (gimple_bb (stmt))->loop_father)); |
| 297 } | |
| 298 | |
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299 typedef struct _bb_vec_info { |
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300 |
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301 basic_block bb; |
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302 /* All interleaving chains of stores in the basic block, represented by the |
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303 first stmt in the chain. */ |
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304 VEC(gimple, heap) *strided_stores; |
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305 |
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306 /* All SLP instances in the basic block. This is a subset of the set of |
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307 STRIDED_STORES of the basic block. */ |
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308 VEC(slp_instance, heap) *slp_instances; |
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309 |
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310 /* All data references in the basic block. */ |
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311 VEC (data_reference_p, heap) *datarefs; |
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312 |
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313 /* All data dependences in the basic block. */ |
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314 VEC (ddr_p, heap) *ddrs; |
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315 } *bb_vec_info; |
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316 |
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317 #define BB_VINFO_BB(B) (B)->bb |
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318 #define BB_VINFO_STRIDED_STORES(B) (B)->strided_stores |
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319 #define BB_VINFO_SLP_INSTANCES(B) (B)->slp_instances |
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320 #define BB_VINFO_DATAREFS(B) (B)->datarefs |
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321 #define BB_VINFO_DDRS(B) (B)->ddrs |
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322 |
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323 static inline bb_vec_info |
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324 vec_info_for_bb (basic_block bb) |
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325 { |
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326 return (bb_vec_info) bb->aux; |
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327 } |
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328 |
| 0 | 329 /*-----------------------------------------------------------------*/ |
| 330 /* Info on vectorized defs. */ | |
| 331 /*-----------------------------------------------------------------*/ | |
| 332 enum stmt_vec_info_type { | |
| 333 undef_vec_info_type = 0, | |
| 334 load_vec_info_type, | |
| 335 store_vec_info_type, | |
| 336 op_vec_info_type, | |
| 337 call_vec_info_type, | |
| 338 assignment_vec_info_type, | |
| 339 condition_vec_info_type, | |
| 340 reduc_vec_info_type, | |
| 341 induc_vec_info_type, | |
| 342 type_promotion_vec_info_type, | |
| 343 type_demotion_vec_info_type, | |
| 344 type_conversion_vec_info_type, | |
| 345 loop_exit_ctrl_vec_info_type | |
| 346 }; | |
| 347 | |
|
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348 /* Indicates whether/how a variable is used in the scope of loop/basic |
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349 block. */ |
| 0 | 350 enum vect_relevant { |
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351 vect_unused_in_scope = 0, |
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352 /* The def is in the inner loop, and the use is in the outer loop, and the |
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353 use is a reduction stmt. */ |
| 0 | 354 vect_used_in_outer_by_reduction, |
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355 /* The def is in the inner loop, and the use is in the outer loop (and is |
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356 not part of reduction). */ |
| 0 | 357 vect_used_in_outer, |
| 358 | |
| 359 /* defs that feed computations that end up (only) in a reduction. These | |
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360 defs may be used by non-reduction stmts, but eventually, any |
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361 computations/values that are affected by these defs are used to compute |
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362 a reduction (i.e. don't get stored to memory, for example). We use this |
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363 to identify computations that we can change the order in which they are |
| 0 | 364 computed. */ |
| 365 vect_used_by_reduction, | |
| 366 | |
|
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367 vect_used_in_scope |
| 0 | 368 }; |
| 369 | |
| 370 /* The type of vectorization that can be applied to the stmt: regular loop-based | |
| 371 vectorization; pure SLP - the stmt is a part of SLP instances and does not | |
| 372 have uses outside SLP instances; or hybrid SLP and loop-based - the stmt is | |
| 373 a part of SLP instance and also must be loop-based vectorized, since it has | |
|
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374 uses outside SLP sequences. |
| 0 | 375 |
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376 In the loop context the meanings of pure and hybrid SLP are slightly |
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377 different. By saying that pure SLP is applied to the loop, we mean that we |
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378 exploit only intra-iteration parallelism in the loop; i.e., the loop can be |
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379 vectorized without doing any conceptual unrolling, cause we don't pack |
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380 together stmts from different iterations, only within a single iteration. |
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381 Loop hybrid SLP means that we exploit both intra-iteration and |
| 0 | 382 inter-iteration parallelism (e.g., number of elements in the vector is 4 |
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383 and the slp-group-size is 2, in which case we don't have enough parallelism |
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384 within an iteration, so we obtain the rest of the parallelism from subsequent |
| 0 | 385 iterations by unrolling the loop by 2). */ |
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386 enum slp_vect_type { |
| 0 | 387 loop_vect = 0, |
| 388 pure_slp, | |
| 389 hybrid | |
| 390 }; | |
| 391 | |
| 392 | |
| 393 typedef struct data_reference *dr_p; | |
| 394 DEF_VEC_P(dr_p); | |
| 395 DEF_VEC_ALLOC_P(dr_p,heap); | |
| 396 | |
| 397 typedef struct _stmt_vec_info { | |
| 398 | |
| 399 enum stmt_vec_info_type type; | |
| 400 | |
|
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401 /* Indicates whether this stmts is part of a computation whose result is |
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402 used outside the loop. */ |
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403 bool live; |
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404 |
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405 /* Stmt is part of some pattern (computation idiom) */ |
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406 bool in_pattern_p; |
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407 |
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408 /* For loads only, if there is a store with the same location, this field is |
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409 TRUE. */ |
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410 bool read_write_dep; |
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411 |
| 0 | 412 /* The stmt to which this info struct refers to. */ |
| 413 gimple stmt; | |
| 414 | |
| 415 /* The loop_vec_info with respect to which STMT is vectorized. */ | |
| 416 loop_vec_info loop_vinfo; | |
| 417 | |
|
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418 /* The vector type to be used for the LHS of this statement. */ |
| 0 | 419 tree vectype; |
| 420 | |
| 421 /* The vectorized version of the stmt. */ | |
| 422 gimple vectorized_stmt; | |
| 423 | |
| 424 | |
| 425 /** The following is relevant only for stmts that contain a non-scalar | |
|
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426 data-ref (array/pointer/struct access). A GIMPLE stmt is expected to have |
| 0 | 427 at most one such data-ref. **/ |
| 428 | |
| 429 /* Information about the data-ref (access function, etc), | |
| 430 relative to the inner-most containing loop. */ | |
| 431 struct data_reference *data_ref_info; | |
| 432 | |
| 433 /* Information about the data-ref relative to this loop | |
| 434 nest (the loop that is being considered for vectorization). */ | |
| 435 tree dr_base_address; | |
| 436 tree dr_init; | |
| 437 tree dr_offset; | |
| 438 tree dr_step; | |
| 439 tree dr_aligned_to; | |
| 440 | |
|
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441 /* Used for various bookkeeping purposes, generally holding a pointer to |
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442 some other stmt S that is in some way "related" to this stmt. |
| 0 | 443 Current use of this field is: |
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444 If this stmt is part of a pattern (i.e. the field 'in_pattern_p' is |
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445 true): S is the "pattern stmt" that represents (and replaces) the |
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446 sequence of stmts that constitutes the pattern. Similarly, the |
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447 related_stmt of the "pattern stmt" points back to this stmt (which is |
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448 the last stmt in the original sequence of stmts that constitutes the |
| 0 | 449 pattern). */ |
| 450 gimple related_stmt; | |
| 451 | |
| 452 /* List of datarefs that are known to have the same alignment as the dataref | |
| 453 of this stmt. */ | |
| 454 VEC(dr_p,heap) *same_align_refs; | |
| 455 | |
| 456 /* Classify the def of this stmt. */ | |
| 457 enum vect_def_type def_type; | |
| 458 | |
|
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459 /* Whether the stmt is SLPed, loop-based vectorized, or both. */ |
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460 enum slp_vect_type slp_type; |
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461 |
| 0 | 462 /* Interleaving info. */ |
| 463 /* First data-ref in the interleaving group. */ | |
| 464 gimple first_dr; | |
| 465 /* Pointer to the next data-ref in the group. */ | |
| 466 gimple next_dr; | |
|
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467 /* In case that two or more stmts share data-ref, this is the pointer to the |
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468 previously detected stmt with the same dr. */ |
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469 gimple same_dr_stmt; |
| 0 | 470 /* The size of the interleaving group. */ |
| 471 unsigned int size; | |
| 472 /* For stores, number of stores from this group seen. We vectorize the last | |
| 473 one. */ | |
| 474 unsigned int store_count; | |
| 475 /* For loads only, the gap from the previous load. For consecutive loads, GAP | |
| 476 is 1. */ | |
| 477 unsigned int gap; | |
|
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478 |
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479 /* Not all stmts in the loop need to be vectorized. e.g, the increment |
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480 of the loop induction variable and computation of array indexes. relevant |
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481 indicates whether the stmt needs to be vectorized. */ |
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482 enum vect_relevant relevant; |
| 0 | 483 |
| 484 /* Vectorization costs associated with statement. */ | |
|
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485 struct |
| 0 | 486 { |
| 487 int outside_of_loop; /* Statements generated outside loop. */ | |
| 488 int inside_of_loop; /* Statements generated inside loop. */ | |
| 489 } cost; | |
| 490 | |
|
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491 /* The bb_vec_info with respect to which STMT is vectorized. */ |
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492 bb_vec_info bb_vinfo; |
|
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493 |
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494 /* Is this statement vectorizable or should it be skipped in (partial) |
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495 vectorization. */ |
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496 bool vectorizable; |
| 0 | 497 } *stmt_vec_info; |
| 498 | |
| 499 /* Access Functions. */ | |
| 500 #define STMT_VINFO_TYPE(S) (S)->type | |
| 501 #define STMT_VINFO_STMT(S) (S)->stmt | |
| 502 #define STMT_VINFO_LOOP_VINFO(S) (S)->loop_vinfo | |
|
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503 #define STMT_VINFO_BB_VINFO(S) (S)->bb_vinfo |
| 0 | 504 #define STMT_VINFO_RELEVANT(S) (S)->relevant |
| 505 #define STMT_VINFO_LIVE_P(S) (S)->live | |
| 506 #define STMT_VINFO_VECTYPE(S) (S)->vectype | |
| 507 #define STMT_VINFO_VEC_STMT(S) (S)->vectorized_stmt | |
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508 #define STMT_VINFO_VECTORIZABLE(S) (S)->vectorizable |
| 0 | 509 #define STMT_VINFO_DATA_REF(S) (S)->data_ref_info |
| 510 | |
| 511 #define STMT_VINFO_DR_BASE_ADDRESS(S) (S)->dr_base_address | |
| 512 #define STMT_VINFO_DR_INIT(S) (S)->dr_init | |
| 513 #define STMT_VINFO_DR_OFFSET(S) (S)->dr_offset | |
| 514 #define STMT_VINFO_DR_STEP(S) (S)->dr_step | |
| 515 #define STMT_VINFO_DR_ALIGNED_TO(S) (S)->dr_aligned_to | |
| 516 | |
| 517 #define STMT_VINFO_IN_PATTERN_P(S) (S)->in_pattern_p | |
| 518 #define STMT_VINFO_RELATED_STMT(S) (S)->related_stmt | |
| 519 #define STMT_VINFO_SAME_ALIGN_REFS(S) (S)->same_align_refs | |
| 520 #define STMT_VINFO_DEF_TYPE(S) (S)->def_type | |
| 521 #define STMT_VINFO_DR_GROUP_FIRST_DR(S) (S)->first_dr | |
| 522 #define STMT_VINFO_DR_GROUP_NEXT_DR(S) (S)->next_dr | |
| 523 #define STMT_VINFO_DR_GROUP_SIZE(S) (S)->size | |
| 524 #define STMT_VINFO_DR_GROUP_STORE_COUNT(S) (S)->store_count | |
| 525 #define STMT_VINFO_DR_GROUP_GAP(S) (S)->gap | |
| 526 #define STMT_VINFO_DR_GROUP_SAME_DR_STMT(S)(S)->same_dr_stmt | |
| 527 #define STMT_VINFO_DR_GROUP_READ_WRITE_DEPENDENCE(S) (S)->read_write_dep | |
| 528 #define STMT_VINFO_STRIDED_ACCESS(S) ((S)->first_dr != NULL) | |
| 529 | |
| 530 #define DR_GROUP_FIRST_DR(S) (S)->first_dr | |
| 531 #define DR_GROUP_NEXT_DR(S) (S)->next_dr | |
| 532 #define DR_GROUP_SIZE(S) (S)->size | |
| 533 #define DR_GROUP_STORE_COUNT(S) (S)->store_count | |
| 534 #define DR_GROUP_GAP(S) (S)->gap | |
| 535 #define DR_GROUP_SAME_DR_STMT(S) (S)->same_dr_stmt | |
| 536 #define DR_GROUP_READ_WRITE_DEPENDENCE(S) (S)->read_write_dep | |
| 537 | |
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538 #define STMT_VINFO_RELEVANT_P(S) ((S)->relevant != vect_unused_in_scope) |
| 0 | 539 #define STMT_VINFO_OUTSIDE_OF_LOOP_COST(S) (S)->cost.outside_of_loop |
| 540 #define STMT_VINFO_INSIDE_OF_LOOP_COST(S) (S)->cost.inside_of_loop | |
| 541 | |
| 542 #define HYBRID_SLP_STMT(S) ((S)->slp_type == hybrid) | |
| 543 #define PURE_SLP_STMT(S) ((S)->slp_type == pure_slp) | |
| 544 #define STMT_SLP_TYPE(S) (S)->slp_type | |
| 545 | |
| 546 /* These are some defines for the initial implementation of the vectorizer's | |
| 547 cost model. These will later be target specific hooks. */ | |
| 548 | |
| 549 /* Cost of conditional taken branch. */ | |
| 550 #ifndef TARG_COND_TAKEN_BRANCH_COST | |
| 551 #define TARG_COND_TAKEN_BRANCH_COST 3 | |
| 552 #endif | |
| 553 | |
| 554 /* Cost of conditional not taken branch. */ | |
| 555 #ifndef TARG_COND_NOT_TAKEN_BRANCH_COST | |
| 556 #define TARG_COND_NOT_TAKEN_BRANCH_COST 1 | |
| 557 #endif | |
| 558 | |
| 559 /* Cost of any scalar operation, excluding load and store. */ | |
| 560 #ifndef TARG_SCALAR_STMT_COST | |
| 561 #define TARG_SCALAR_STMT_COST 1 | |
| 562 #endif | |
| 563 | |
| 564 /* Cost of scalar load. */ | |
| 565 #ifndef TARG_SCALAR_LOAD_COST | |
| 566 #define TARG_SCALAR_LOAD_COST 1 | |
| 567 #endif | |
| 568 | |
| 569 /* Cost of scalar store. */ | |
| 570 #ifndef TARG_SCALAR_STORE_COST | |
| 571 #define TARG_SCALAR_STORE_COST 1 | |
| 572 #endif | |
| 573 | |
| 574 /* Cost of any vector operation, excluding load, store or vector to scalar | |
|
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575 operation. */ |
| 0 | 576 #ifndef TARG_VEC_STMT_COST |
| 577 #define TARG_VEC_STMT_COST 1 | |
| 578 #endif | |
| 579 | |
| 580 /* Cost of vector to scalar operation. */ | |
| 581 #ifndef TARG_VEC_TO_SCALAR_COST | |
| 582 #define TARG_VEC_TO_SCALAR_COST 1 | |
| 583 #endif | |
| 584 | |
| 585 /* Cost of scalar to vector operation. */ | |
| 586 #ifndef TARG_SCALAR_TO_VEC_COST | |
| 587 #define TARG_SCALAR_TO_VEC_COST 1 | |
| 588 #endif | |
| 589 | |
| 590 /* Cost of aligned vector load. */ | |
| 591 #ifndef TARG_VEC_LOAD_COST | |
| 592 #define TARG_VEC_LOAD_COST 1 | |
| 593 #endif | |
| 594 | |
| 595 /* Cost of misaligned vector load. */ | |
| 596 #ifndef TARG_VEC_UNALIGNED_LOAD_COST | |
| 597 #define TARG_VEC_UNALIGNED_LOAD_COST 2 | |
| 598 #endif | |
| 599 | |
| 600 /* Cost of vector store. */ | |
| 601 #ifndef TARG_VEC_STORE_COST | |
| 602 #define TARG_VEC_STORE_COST 1 | |
| 603 #endif | |
| 604 | |
| 605 /* Cost of vector permutation. */ | |
| 606 #ifndef TARG_VEC_PERMUTE_COST | |
| 607 #define TARG_VEC_PERMUTE_COST 1 | |
| 608 #endif | |
| 609 | |
| 610 /* The maximum number of intermediate steps required in multi-step type | |
| 611 conversion. */ | |
| 612 #define MAX_INTERM_CVT_STEPS 3 | |
| 613 | |
|
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614 /* The maximum vectorization factor supported by any target (V32QI). */ |
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615 #define MAX_VECTORIZATION_FACTOR 32 |
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616 |
| 0 | 617 /* Avoid GTY(()) on stmt_vec_info. */ |
| 618 typedef void *vec_void_p; | |
| 619 DEF_VEC_P (vec_void_p); | |
| 620 DEF_VEC_ALLOC_P (vec_void_p, heap); | |
| 621 | |
| 622 extern VEC(vec_void_p,heap) *stmt_vec_info_vec; | |
| 623 | |
| 624 void init_stmt_vec_info_vec (void); | |
| 625 void free_stmt_vec_info_vec (void); | |
| 626 | |
| 627 static inline stmt_vec_info | |
| 628 vinfo_for_stmt (gimple stmt) | |
| 629 { | |
| 630 unsigned int uid = gimple_uid (stmt); | |
| 631 if (uid == 0) | |
| 632 return NULL; | |
| 633 | |
| 634 gcc_assert (uid <= VEC_length (vec_void_p, stmt_vec_info_vec)); | |
| 635 return (stmt_vec_info) VEC_index (vec_void_p, stmt_vec_info_vec, uid - 1); | |
| 636 } | |
| 637 | |
| 638 static inline void | |
| 639 set_vinfo_for_stmt (gimple stmt, stmt_vec_info info) | |
| 640 { | |
| 641 unsigned int uid = gimple_uid (stmt); | |
| 642 if (uid == 0) | |
| 643 { | |
| 644 gcc_assert (info); | |
| 645 uid = VEC_length (vec_void_p, stmt_vec_info_vec) + 1; | |
| 646 gimple_set_uid (stmt, uid); | |
| 647 VEC_safe_push (vec_void_p, heap, stmt_vec_info_vec, (vec_void_p) info); | |
| 648 } | |
| 649 else | |
| 650 VEC_replace (vec_void_p, stmt_vec_info_vec, uid - 1, (vec_void_p) info); | |
| 651 } | |
| 652 | |
| 653 static inline gimple | |
| 654 get_earlier_stmt (gimple stmt1, gimple stmt2) | |
| 655 { | |
| 656 unsigned int uid1, uid2; | |
| 657 | |
| 658 if (stmt1 == NULL) | |
| 659 return stmt2; | |
| 660 | |
| 661 if (stmt2 == NULL) | |
| 662 return stmt1; | |
| 663 | |
| 664 uid1 = gimple_uid (stmt1); | |
| 665 uid2 = gimple_uid (stmt2); | |
| 666 | |
| 667 if (uid1 == 0 || uid2 == 0) | |
| 668 return NULL; | |
| 669 | |
| 670 gcc_assert (uid1 <= VEC_length (vec_void_p, stmt_vec_info_vec)); | |
| 671 gcc_assert (uid2 <= VEC_length (vec_void_p, stmt_vec_info_vec)); | |
| 672 | |
| 673 if (uid1 < uid2) | |
| 674 return stmt1; | |
| 675 else | |
| 676 return stmt2; | |
| 677 } | |
| 678 | |
| 679 static inline bool | |
| 680 is_pattern_stmt_p (stmt_vec_info stmt_info) | |
| 681 { | |
| 682 gimple related_stmt; | |
| 683 stmt_vec_info related_stmt_info; | |
| 684 | |
| 685 related_stmt = STMT_VINFO_RELATED_STMT (stmt_info); | |
| 686 if (related_stmt | |
| 687 && (related_stmt_info = vinfo_for_stmt (related_stmt)) | |
| 688 && STMT_VINFO_IN_PATTERN_P (related_stmt_info)) | |
| 689 return true; | |
| 690 | |
| 691 return false; | |
| 692 } | |
| 693 | |
| 694 static inline bool | |
| 695 is_loop_header_bb_p (basic_block bb) | |
| 696 { | |
| 697 if (bb == (bb->loop_father)->header) | |
| 698 return true; | |
| 699 gcc_assert (EDGE_COUNT (bb->preds) == 1); | |
| 700 return false; | |
| 701 } | |
| 702 | |
|
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703 static inline void |
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704 stmt_vinfo_set_inside_of_loop_cost (stmt_vec_info stmt_info, slp_tree slp_node, |
| 0 | 705 int cost) |
| 706 { | |
| 707 if (slp_node) | |
| 708 SLP_TREE_INSIDE_OF_LOOP_COST (slp_node) = cost; | |
| 709 else | |
| 710 STMT_VINFO_INSIDE_OF_LOOP_COST (stmt_info) = cost; | |
|
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711 } |
| 0 | 712 |
|
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713 static inline void |
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714 stmt_vinfo_set_outside_of_loop_cost (stmt_vec_info stmt_info, slp_tree slp_node, |
| 0 | 715 int cost) |
| 716 { | |
| 717 if (slp_node) | |
| 718 SLP_TREE_OUTSIDE_OF_LOOP_COST (slp_node) = cost; | |
| 719 else | |
| 720 STMT_VINFO_OUTSIDE_OF_LOOP_COST (stmt_info) = cost; | |
|
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721 } |
| 0 | 722 |
| 723 static inline int | |
| 724 vect_pow2 (int x) | |
| 725 { | |
| 726 int i, res = 1; | |
| 727 | |
| 728 for (i = 0; i < x; i++) | |
| 729 res *= 2; | |
| 730 | |
| 731 return res; | |
| 732 } | |
| 733 | |
| 734 /*-----------------------------------------------------------------*/ | |
| 735 /* Info on data references alignment. */ | |
| 736 /*-----------------------------------------------------------------*/ | |
| 737 | |
| 738 /* Reflects actual alignment of first access in the vectorized loop, | |
| 739 taking into account peeling/versioning if applied. */ | |
| 740 #define DR_MISALIGNMENT(DR) ((int) (size_t) (DR)->aux) | |
| 741 #define SET_DR_MISALIGNMENT(DR, VAL) ((DR)->aux = (void *) (size_t) (VAL)) | |
| 742 | |
| 743 static inline bool | |
| 744 aligned_access_p (struct data_reference *data_ref_info) | |
| 745 { | |
| 746 return (DR_MISALIGNMENT (data_ref_info) == 0); | |
| 747 } | |
| 748 | |
| 749 static inline bool | |
| 750 known_alignment_for_access_p (struct data_reference *data_ref_info) | |
| 751 { | |
| 752 return (DR_MISALIGNMENT (data_ref_info) != -1); | |
| 753 } | |
| 754 | |
| 755 /* vect_dump will be set to stderr or dump_file if exist. */ | |
| 756 extern FILE *vect_dump; | |
|
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757 extern LOC vect_loop_location; |
| 0 | 758 |
| 759 /*-----------------------------------------------------------------*/ | |
| 760 /* Function prototypes. */ | |
| 761 /*-----------------------------------------------------------------*/ | |
| 762 | |
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763 /* Simple loop peeling and versioning utilities for vectorizer's purposes - |
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764 in tree-vect-loop-manip.c. */ |
| 0 | 765 extern void slpeel_make_loop_iterate_ntimes (struct loop *, tree); |
| 766 extern bool slpeel_can_duplicate_loop_p (const struct loop *, const_edge); | |
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767 extern void vect_loop_versioning (loop_vec_info, bool, tree *, gimple_seq *); |
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768 extern void vect_do_peeling_for_loop_bound (loop_vec_info, tree *, |
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769 tree, gimple_seq); |
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770 extern void vect_do_peeling_for_alignment (loop_vec_info); |
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771 extern LOC find_loop_location (struct loop *); |
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772 extern bool vect_can_advance_ivs_p (loop_vec_info); |
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773 |
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774 /* In tree-vect-stmts.c. */ |
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775 extern tree get_vectype_for_scalar_type (tree); |
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776 extern tree get_same_sized_vectype (tree, tree); |
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777 extern bool vect_is_simple_use (tree, loop_vec_info, bb_vec_info, gimple *, |
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778 tree *, enum vect_def_type *); |
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779 extern bool vect_is_simple_use_1 (tree, loop_vec_info, bb_vec_info, gimple *, |
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780 tree *, enum vect_def_type *, tree *); |
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781 extern bool supportable_widening_operation (enum tree_code, gimple, tree, tree, |
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782 tree *, tree *, enum tree_code *, |
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783 enum tree_code *, int *, |
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784 VEC (tree, heap) **); |
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785 extern bool supportable_narrowing_operation (enum tree_code, tree, tree, |
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786 enum tree_code *, |
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787 int *, VEC (tree, heap) **); |
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788 extern stmt_vec_info new_stmt_vec_info (gimple stmt, loop_vec_info, |
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789 bb_vec_info); |
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790 extern void free_stmt_vec_info (gimple stmt); |
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791 extern tree vectorizable_function (gimple, tree, tree); |
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792 extern void vect_model_simple_cost (stmt_vec_info, int, enum vect_def_type *, |
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793 slp_tree); |
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794 extern void vect_model_store_cost (stmt_vec_info, int, enum vect_def_type, |
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795 slp_tree); |
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796 extern void vect_model_load_cost (stmt_vec_info, int, slp_tree); |
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797 extern void vect_finish_stmt_generation (gimple, gimple, |
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798 gimple_stmt_iterator *); |
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799 extern bool vect_mark_stmts_to_be_vectorized (loop_vec_info); |
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800 extern int cost_for_stmt (gimple); |
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801 extern tree vect_get_vec_def_for_operand (tree, gimple, tree *); |
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802 extern tree vect_init_vector (gimple, tree, tree, |
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803 gimple_stmt_iterator *); |
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804 extern tree vect_get_vec_def_for_stmt_copy (enum vect_def_type, tree); |
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805 extern bool vect_transform_stmt (gimple, gimple_stmt_iterator *, |
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806 bool *, slp_tree, slp_instance); |
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807 extern void vect_remove_stores (gimple); |
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808 extern bool vect_analyze_stmt (gimple, bool *, slp_tree); |
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809 extern bool vectorizable_condition (gimple, gimple_stmt_iterator *, gimple *, |
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810 tree, int); |
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811 |
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812 /* In tree-vect-data-refs.c. */ |
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813 extern bool vect_can_force_dr_alignment_p (const_tree, unsigned int); |
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814 extern enum dr_alignment_support vect_supportable_dr_alignment |
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815 (struct data_reference *); |
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816 extern tree vect_get_smallest_scalar_type (gimple, HOST_WIDE_INT *, |
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817 HOST_WIDE_INT *); |
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818 extern bool vect_analyze_data_ref_dependences (loop_vec_info, bb_vec_info, |
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819 int *); |
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820 extern bool vect_enhance_data_refs_alignment (loop_vec_info); |
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821 extern bool vect_analyze_data_refs_alignment (loop_vec_info, bb_vec_info); |
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822 extern bool vect_verify_datarefs_alignment (loop_vec_info, bb_vec_info); |
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823 extern bool vect_analyze_data_ref_accesses (loop_vec_info, bb_vec_info); |
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824 extern bool vect_prune_runtime_alias_test_list (loop_vec_info); |
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825 extern bool vect_analyze_data_refs (loop_vec_info, bb_vec_info, int *); |
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826 extern tree vect_create_data_ref_ptr (gimple, struct loop *, tree, tree *, |
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827 gimple *, bool, bool *); |
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828 extern tree bump_vector_ptr (tree, gimple, gimple_stmt_iterator *, gimple, tree); |
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829 extern tree vect_create_destination_var (tree, tree); |
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830 extern bool vect_strided_store_supported (tree); |
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831 extern bool vect_strided_load_supported (tree); |
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832 extern bool vect_permute_store_chain (VEC(tree,heap) *,unsigned int, gimple, |
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833 gimple_stmt_iterator *, VEC(tree,heap) **); |
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834 extern tree vect_setup_realignment (gimple, gimple_stmt_iterator *, tree *, |
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835 enum dr_alignment_support, tree, |
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836 struct loop **); |
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837 extern bool vect_permute_load_chain (VEC(tree,heap) *,unsigned int, gimple, |
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838 gimple_stmt_iterator *, VEC(tree,heap) **); |
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839 extern bool vect_transform_strided_load (gimple, VEC(tree,heap) *, int, |
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840 gimple_stmt_iterator *); |
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841 extern int vect_get_place_in_interleaving_chain (gimple, gimple); |
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842 extern tree vect_get_new_vect_var (tree, enum vect_var_kind, const char *); |
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843 extern tree vect_create_addr_base_for_vector_ref (gimple, gimple_seq *, |
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844 tree, struct loop *); |
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845 |
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846 /* In tree-vect-loop.c. */ |
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847 /* FORNOW: Used in tree-parloops.c. */ |
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848 extern void destroy_loop_vec_info (loop_vec_info, bool); |
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849 extern gimple vect_force_simple_reduction (loop_vec_info, gimple, bool, bool *); |
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850 /* Drive for loop analysis stage. */ |
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851 extern loop_vec_info vect_analyze_loop (struct loop *); |
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852 /* Drive for loop transformation stage. */ |
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853 extern void vect_transform_loop (loop_vec_info); |
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854 extern loop_vec_info vect_analyze_loop_form (struct loop *); |
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855 extern bool vectorizable_live_operation (gimple, gimple_stmt_iterator *, |
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856 gimple *); |
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857 extern bool vectorizable_reduction (gimple, gimple_stmt_iterator *, gimple *, |
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858 slp_tree); |
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859 extern bool vectorizable_induction (gimple, gimple_stmt_iterator *, gimple *); |
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860 extern int vect_estimate_min_profitable_iters (loop_vec_info); |
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861 extern tree get_initial_def_for_reduction (gimple, tree, tree *); |
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862 extern int vect_min_worthwhile_factor (enum tree_code); |
| 0 | 863 |
| 864 | |
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865 /* In tree-vect-slp.c. */ |
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866 extern void vect_free_slp_instance (slp_instance); |
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867 extern bool vect_transform_slp_perm_load (gimple, VEC (tree, heap) *, |
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868 gimple_stmt_iterator *, int, |
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869 slp_instance, bool); |
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870 extern bool vect_schedule_slp (loop_vec_info, bb_vec_info); |
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871 extern void vect_update_slp_costs_according_to_vf (loop_vec_info); |
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872 extern bool vect_analyze_slp (loop_vec_info, bb_vec_info); |
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873 extern void vect_make_slp_decision (loop_vec_info); |
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874 extern void vect_detect_hybrid_slp (loop_vec_info); |
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875 extern void vect_get_slp_defs (slp_tree, VEC (tree,heap) **, |
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876 VEC (tree,heap) **, int); |
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877 extern LOC find_bb_location (basic_block); |
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878 extern bb_vec_info vect_slp_analyze_bb (basic_block); |
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879 extern void vect_slp_transform_bb (basic_block); |
| 0 | 880 |
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881 /* In tree-vect-patterns.c. */ |
| 0 | 882 /* Pattern recognition functions. |
| 883 Additional pattern recognition functions can (and will) be added | |
| 884 in the future. */ | |
| 885 typedef gimple (* vect_recog_func_ptr) (gimple, tree *, tree *); | |
| 886 #define NUM_PATTERNS 4 | |
| 887 void vect_pattern_recog (loop_vec_info); | |
| 888 | |
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889 /* In tree-vectorizer.c. */ |
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890 unsigned vectorize_loops (void); |
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891 /* Vectorization debug information */ |
| 0 | 892 extern bool vect_print_dump_info (enum verbosity_levels); |
| 893 | |
| 894 #endif /* GCC_TREE_VECTORIZER_H */ |