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comparison gcc/tree-ssa-operands.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 77e2b8dfacca |
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1 /* SSA operand management for trees. | |
2 Copyright (C) 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. | |
3 | |
4 This file is part of GCC. | |
5 | |
6 GCC is free software; you can redistribute it and/or modify it under | |
7 the terms of the GNU General Public License as published by the Free | |
8 Software Foundation; either version 3, or (at your option) any later | |
9 version. | |
10 | |
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 for more details. | |
15 | |
16 You should have received a copy of the GNU General Public License | |
17 along with GCC; see the file COPYING3. If not see | |
18 <http://www.gnu.org/licenses/>. */ | |
19 | |
20 #ifndef GCC_TREE_SSA_OPERANDS_H | |
21 #define GCC_TREE_SSA_OPERANDS_H | |
22 | |
23 /* Interface to SSA operands. */ | |
24 | |
25 | |
26 /* This represents a pointer to a DEF operand. */ | |
27 typedef tree *def_operand_p; | |
28 | |
29 /* This represents a pointer to a USE operand. */ | |
30 typedef ssa_use_operand_t *use_operand_p; | |
31 | |
32 /* NULL operand types. */ | |
33 #define NULL_USE_OPERAND_P NULL | |
34 #define NULL_DEF_OPERAND_P NULL | |
35 | |
36 /* This represents the DEF operands of a stmt. */ | |
37 struct def_optype_d | |
38 { | |
39 struct def_optype_d *next; | |
40 tree *def_ptr; | |
41 }; | |
42 typedef struct def_optype_d *def_optype_p; | |
43 | |
44 /* This represents the USE operands of a stmt. */ | |
45 struct use_optype_d | |
46 { | |
47 struct use_optype_d *next; | |
48 struct ssa_use_operand_d use_ptr; | |
49 }; | |
50 typedef struct use_optype_d *use_optype_p; | |
51 | |
52 typedef struct vuse_element_d | |
53 { | |
54 tree use_var; | |
55 struct ssa_use_operand_d use_ptr; | |
56 } vuse_element_t; | |
57 | |
58 typedef struct vuse_vec_d | |
59 { | |
60 unsigned int num_vuse; | |
61 vuse_element_t uses[1]; | |
62 } vuse_vec_t; | |
63 typedef struct vuse_vec_d *vuse_vec_p; | |
64 | |
65 #define VUSE_VECT_NUM_ELEM(V) (V).num_vuse | |
66 #define VUSE_VECT_ELEMENT_NC(V,X) (V).uses[(X)] | |
67 #define VUSE_ELEMENT_PTR_NC(V,X) (&(VUSE_VECT_ELEMENT_NC ((V),(X)).use_ptr)) | |
68 #define VUSE_ELEMENT_VAR_NC(V,X) (VUSE_VECT_ELEMENT_NC ((V),(X)).use_var) | |
69 | |
70 #ifdef ENABLE_CHECKING | |
71 #define VUSE_VECT_ELEMENT(V,X) \ | |
72 (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \ | |
73 VUSE_VECT_ELEMENT_NC (V,X)) | |
74 | |
75 #define VUSE_ELEMENT_PTR(V,X) \ | |
76 (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \ | |
77 VUSE_ELEMENT_PTR_NC (V, X)) | |
78 | |
79 #define SET_VUSE_VECT_ELEMENT(V,X,N) \ | |
80 (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \ | |
81 VUSE_VECT_ELEMENT_NC (V,X) = (N)) | |
82 | |
83 #define SET_VUSE_ELEMENT_VAR(V,X,N) \ | |
84 (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \ | |
85 VUSE_VECT_ELEMENT_NC ((V),(X)).use_var = (N)) | |
86 | |
87 #define SET_VUSE_ELEMENT_PTR(V,X,N) \ | |
88 (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \ | |
89 VUSE_ELEMENT_PTR_NC (V, X) = (N)) | |
90 #else | |
91 #define VUSE_VECT_ELEMENT(V,X) VUSE_VECT_ELEMENT_NC(V,X) | |
92 #define VUSE_ELEMENT_PTR(V,X) VUSE_ELEMENT_PTR_NC(V,X) | |
93 #define SET_VUSE_VECT_ELEMENT(V,X,N) VUSE_VECT_ELEMENT_NC(V,X) = (N) | |
94 #define SET_VUSE_ELEMENT_PTR(V,X,N) VUSE_ELEMENT_PTR_NC(V,X) = (N) | |
95 #define SET_VUSE_ELEMENT_VAR(V,X,N) VUSE_VECT_ELEMENT_NC ((V),(X)).use_var = (N) | |
96 #endif | |
97 | |
98 #define VUSE_ELEMENT_VAR(V,X) (VUSE_VECT_ELEMENT ((V),(X)).use_var) | |
99 | |
100 /* This represents the virtual ops of a stmt. */ | |
101 struct voptype_d | |
102 { | |
103 struct voptype_d *next; | |
104 tree def_var; | |
105 vuse_vec_t usev; | |
106 }; | |
107 typedef struct voptype_d *voptype_p; | |
108 | |
109 /* This structure represents a variable sized buffer which is allocated by the | |
110 operand memory manager. Operands are suballocated out of this block. The | |
111 MEM array varies in size. */ | |
112 | |
113 struct ssa_operand_memory_d GTY((chain_next("%h.next"))) | |
114 { | |
115 struct ssa_operand_memory_d *next; | |
116 char mem[1]; | |
117 }; | |
118 | |
119 /* Number of different size free buckets for virtual operands. */ | |
120 #define NUM_VOP_FREE_BUCKETS 29 | |
121 | |
122 /* Per-function operand caches. */ | |
123 struct ssa_operands GTY(()) { | |
124 struct ssa_operand_memory_d *operand_memory; | |
125 unsigned operand_memory_index; | |
126 /* Current size of the operand memory buffer. */ | |
127 unsigned int ssa_operand_mem_size; | |
128 | |
129 bool ops_active; | |
130 | |
131 struct def_optype_d * GTY ((skip (""))) free_defs; | |
132 struct use_optype_d * GTY ((skip (""))) free_uses; | |
133 struct voptype_d * GTY ((skip (""))) vop_free_buckets[NUM_VOP_FREE_BUCKETS]; | |
134 VEC(tree,heap) * GTY ((skip (""))) mpt_table; | |
135 }; | |
136 | |
137 /* This represents the operand cache for a stmt. */ | |
138 struct stmt_operands_d | |
139 { | |
140 /* Statement operands. */ | |
141 struct def_optype_d * def_ops; | |
142 struct use_optype_d * use_ops; | |
143 | |
144 /* Virtual operands (VDEF, VUSE). */ | |
145 struct voptype_d * vdef_ops; | |
146 struct voptype_d * vuse_ops; | |
147 | |
148 /* Sets of memory symbols loaded and stored. */ | |
149 bitmap stores; | |
150 bitmap loads; | |
151 }; | |
152 | |
153 typedef struct stmt_operands_d *stmt_operands_p; | |
154 | |
155 #define USE_FROM_PTR(PTR) get_use_from_ptr (PTR) | |
156 #define DEF_FROM_PTR(PTR) get_def_from_ptr (PTR) | |
157 #define SET_USE(USE, V) set_ssa_use_from_ptr (USE, V) | |
158 #define SET_DEF(DEF, V) ((*(DEF)) = (V)) | |
159 | |
160 #define USE_STMT(USE) (USE)->loc.stmt | |
161 | |
162 #define USE_OP_PTR(OP) (&((OP)->use_ptr)) | |
163 #define USE_OP(OP) (USE_FROM_PTR (USE_OP_PTR (OP))) | |
164 | |
165 #define DEF_OP_PTR(OP) ((OP)->def_ptr) | |
166 #define DEF_OP(OP) (DEF_FROM_PTR (DEF_OP_PTR (OP))) | |
167 | |
168 #define VUSE_OP_PTR(OP,X) VUSE_ELEMENT_PTR ((OP)->usev, (X)) | |
169 #define VUSE_OP(OP,X) VUSE_ELEMENT_VAR ((OP)->usev, (X)) | |
170 #define SET_VUSE_OP(OP,X,N) SET_VUSE_ELEMENT_VAR ((OP)->usev, (X), (N)) | |
171 #define VUSE_NUM(OP) VUSE_VECT_NUM_ELEM ((OP)->usev) | |
172 #define VUSE_VECT(OP) &((OP)->usev) | |
173 | |
174 #define VDEF_RESULT_PTR(OP) (&((OP)->def_var)) | |
175 #define VDEF_RESULT(OP) ((OP)->def_var) | |
176 #define VDEF_OP_PTR(OP,X) VUSE_OP_PTR (OP, X) | |
177 #define VDEF_OP(OP,X) VUSE_OP (OP, X) | |
178 #define SET_VDEF_OP(OP,X,N) SET_VUSE_OP (OP, X, N) | |
179 #define VDEF_NUM(OP) VUSE_VECT_NUM_ELEM ((OP)->usev) | |
180 #define VDEF_VECT(OP) &((OP)->usev) | |
181 | |
182 #define PHI_RESULT_PTR(PHI) gimple_phi_result_ptr (PHI) | |
183 #define PHI_RESULT(PHI) DEF_FROM_PTR (PHI_RESULT_PTR (PHI)) | |
184 #define SET_PHI_RESULT(PHI, V) SET_DEF (PHI_RESULT_PTR (PHI), (V)) | |
185 | |
186 #define PHI_ARG_DEF_PTR(PHI, I) gimple_phi_arg_imm_use_ptr ((PHI), (I)) | |
187 #define PHI_ARG_DEF(PHI, I) USE_FROM_PTR (PHI_ARG_DEF_PTR ((PHI), (I))) | |
188 #define SET_PHI_ARG_DEF(PHI, I, V) \ | |
189 SET_USE (PHI_ARG_DEF_PTR ((PHI), (I)), (V)) | |
190 #define PHI_ARG_DEF_FROM_EDGE(PHI, E) \ | |
191 PHI_ARG_DEF ((PHI), (E)->dest_idx) | |
192 #define PHI_ARG_DEF_PTR_FROM_EDGE(PHI, E) \ | |
193 PHI_ARG_DEF_PTR ((PHI), (E)->dest_idx) | |
194 #define PHI_ARG_INDEX_FROM_USE(USE) phi_arg_index_from_use (USE) | |
195 | |
196 | |
197 extern void init_ssa_operands (void); | |
198 extern void fini_ssa_operands (void); | |
199 extern void update_stmt_operands (gimple); | |
200 extern void free_stmt_operands (gimple); | |
201 extern bool verify_imm_links (FILE *f, tree var); | |
202 | |
203 extern void copy_virtual_operands (gimple, gimple); | |
204 extern int operand_build_cmp (const void *, const void *); | |
205 extern void create_ssa_artificial_load_stmt (gimple, gimple, bool); | |
206 | |
207 extern void dump_immediate_uses (FILE *file); | |
208 extern void dump_immediate_uses_for (FILE *file, tree var); | |
209 extern void debug_immediate_uses (void); | |
210 extern void debug_immediate_uses_for (tree var); | |
211 extern void dump_decl_set (FILE *, bitmap); | |
212 extern void debug_decl_set (bitmap); | |
213 | |
214 extern bool ssa_operands_active (void); | |
215 | |
216 extern void push_stmt_changes (gimple *); | |
217 extern void pop_stmt_changes (gimple *); | |
218 extern void discard_stmt_changes (gimple *); | |
219 void add_to_addressable_set (tree, bitmap *); | |
220 | |
221 enum ssa_op_iter_type { | |
222 ssa_op_iter_none = 0, | |
223 ssa_op_iter_tree, | |
224 ssa_op_iter_use, | |
225 ssa_op_iter_def, | |
226 ssa_op_iter_vdef | |
227 }; | |
228 | |
229 /* This structure is used in the operand iterator loops. It contains the | |
230 items required to determine which operand is retrieved next. During | |
231 optimization, this structure is scalarized, and any unused fields are | |
232 optimized away, resulting in little overhead. */ | |
233 | |
234 typedef struct ssa_operand_iterator_d | |
235 { | |
236 def_optype_p defs; | |
237 use_optype_p uses; | |
238 voptype_p vuses; | |
239 voptype_p vdefs; | |
240 voptype_p mayuses; | |
241 enum ssa_op_iter_type iter_type; | |
242 int phi_i; | |
243 int num_phi; | |
244 gimple phi_stmt; | |
245 bool done; | |
246 unsigned int vuse_index; | |
247 unsigned int mayuse_index; | |
248 } ssa_op_iter; | |
249 | |
250 /* These flags are used to determine which operands are returned during | |
251 execution of the loop. */ | |
252 #define SSA_OP_USE 0x01 /* Real USE operands. */ | |
253 #define SSA_OP_DEF 0x02 /* Real DEF operands. */ | |
254 #define SSA_OP_VUSE 0x04 /* VUSE operands. */ | |
255 #define SSA_OP_VMAYUSE 0x08 /* USE portion of VDEFS. */ | |
256 #define SSA_OP_VDEF 0x10 /* DEF portion of VDEFS. */ | |
257 | |
258 /* These are commonly grouped operand flags. */ | |
259 #define SSA_OP_VIRTUAL_USES (SSA_OP_VUSE | SSA_OP_VMAYUSE) | |
260 #define SSA_OP_VIRTUAL_DEFS (SSA_OP_VDEF) | |
261 #define SSA_OP_ALL_VIRTUALS (SSA_OP_VIRTUAL_USES | SSA_OP_VIRTUAL_DEFS) | |
262 #define SSA_OP_ALL_USES (SSA_OP_VIRTUAL_USES | SSA_OP_USE) | |
263 #define SSA_OP_ALL_DEFS (SSA_OP_VIRTUAL_DEFS | SSA_OP_DEF) | |
264 #define SSA_OP_ALL_OPERANDS (SSA_OP_ALL_USES | SSA_OP_ALL_DEFS) | |
265 | |
266 /* This macro executes a loop over the operands of STMT specified in FLAG, | |
267 returning each operand as a 'tree' in the variable TREEVAR. ITER is an | |
268 ssa_op_iter structure used to control the loop. */ | |
269 #define FOR_EACH_SSA_TREE_OPERAND(TREEVAR, STMT, ITER, FLAGS) \ | |
270 for (TREEVAR = op_iter_init_tree (&(ITER), STMT, FLAGS); \ | |
271 !op_iter_done (&(ITER)); \ | |
272 TREEVAR = op_iter_next_tree (&(ITER))) | |
273 | |
274 /* This macro executes a loop over the operands of STMT specified in FLAG, | |
275 returning each operand as a 'use_operand_p' in the variable USEVAR. | |
276 ITER is an ssa_op_iter structure used to control the loop. */ | |
277 #define FOR_EACH_SSA_USE_OPERAND(USEVAR, STMT, ITER, FLAGS) \ | |
278 for (USEVAR = op_iter_init_use (&(ITER), STMT, FLAGS); \ | |
279 !op_iter_done (&(ITER)); \ | |
280 USEVAR = op_iter_next_use (&(ITER))) | |
281 | |
282 /* This macro executes a loop over the operands of STMT specified in FLAG, | |
283 returning each operand as a 'def_operand_p' in the variable DEFVAR. | |
284 ITER is an ssa_op_iter structure used to control the loop. */ | |
285 #define FOR_EACH_SSA_DEF_OPERAND(DEFVAR, STMT, ITER, FLAGS) \ | |
286 for (DEFVAR = op_iter_init_def (&(ITER), STMT, FLAGS); \ | |
287 !op_iter_done (&(ITER)); \ | |
288 DEFVAR = op_iter_next_def (&(ITER))) | |
289 | |
290 /* This macro executes a loop over the VDEF operands of STMT. The def | |
291 and use vector for each VDEF is returned in DEFVAR and USEVECT. | |
292 ITER is an ssa_op_iter structure used to control the loop. */ | |
293 #define FOR_EACH_SSA_VDEF_OPERAND(DEFVAR, USEVECT, STMT, ITER) \ | |
294 for (op_iter_init_vdef (&(ITER), STMT, &(USEVECT), &(DEFVAR)); \ | |
295 !op_iter_done (&(ITER)); \ | |
296 op_iter_next_vdef (&(USEVECT), &(DEFVAR), &(ITER))) | |
297 | |
298 /* This macro will execute a loop over all the arguments of a PHI which | |
299 match FLAGS. A use_operand_p is always returned via USEVAR. FLAGS | |
300 can be either SSA_OP_USE or SSA_OP_VIRTUAL_USES or SSA_OP_ALL_USES. */ | |
301 #define FOR_EACH_PHI_ARG(USEVAR, STMT, ITER, FLAGS) \ | |
302 for ((USEVAR) = op_iter_init_phiuse (&(ITER), STMT, FLAGS); \ | |
303 !op_iter_done (&(ITER)); \ | |
304 (USEVAR) = op_iter_next_use (&(ITER))) | |
305 | |
306 | |
307 /* This macro will execute a loop over a stmt, regardless of whether it is | |
308 a real stmt or a PHI node, looking at the USE nodes matching FLAGS. */ | |
309 #define FOR_EACH_PHI_OR_STMT_USE(USEVAR, STMT, ITER, FLAGS) \ | |
310 for ((USEVAR) = (gimple_code (STMT) == GIMPLE_PHI \ | |
311 ? op_iter_init_phiuse (&(ITER), STMT, FLAGS) \ | |
312 : op_iter_init_use (&(ITER), STMT, FLAGS)); \ | |
313 !op_iter_done (&(ITER)); \ | |
314 (USEVAR) = op_iter_next_use (&(ITER))) | |
315 | |
316 /* This macro will execute a loop over a stmt, regardless of whether it is | |
317 a real stmt or a PHI node, looking at the DEF nodes matching FLAGS. */ | |
318 #define FOR_EACH_PHI_OR_STMT_DEF(DEFVAR, STMT, ITER, FLAGS) \ | |
319 for ((DEFVAR) = (gimple_code (STMT) == GIMPLE_PHI \ | |
320 ? op_iter_init_phidef (&(ITER), STMT, FLAGS) \ | |
321 : op_iter_init_def (&(ITER), STMT, FLAGS)); \ | |
322 !op_iter_done (&(ITER)); \ | |
323 (DEFVAR) = op_iter_next_def (&(ITER))) | |
324 | |
325 /* This macro returns an operand in STMT as a tree if it is the ONLY | |
326 operand matching FLAGS. If there are 0 or more than 1 operand matching | |
327 FLAGS, then NULL_TREE is returned. */ | |
328 #define SINGLE_SSA_TREE_OPERAND(STMT, FLAGS) \ | |
329 single_ssa_tree_operand (STMT, FLAGS) | |
330 | |
331 /* This macro returns an operand in STMT as a use_operand_p if it is the ONLY | |
332 operand matching FLAGS. If there are 0 or more than 1 operand matching | |
333 FLAGS, then NULL_USE_OPERAND_P is returned. */ | |
334 #define SINGLE_SSA_USE_OPERAND(STMT, FLAGS) \ | |
335 single_ssa_use_operand (STMT, FLAGS) | |
336 | |
337 /* This macro returns an operand in STMT as a def_operand_p if it is the ONLY | |
338 operand matching FLAGS. If there are 0 or more than 1 operand matching | |
339 FLAGS, then NULL_DEF_OPERAND_P is returned. */ | |
340 #define SINGLE_SSA_DEF_OPERAND(STMT, FLAGS) \ | |
341 single_ssa_def_operand (STMT, FLAGS) | |
342 | |
343 /* This macro returns TRUE if there are no operands matching FLAGS in STMT. */ | |
344 #define ZERO_SSA_OPERANDS(STMT, FLAGS) zero_ssa_operands (STMT, FLAGS) | |
345 | |
346 /* This macro counts the number of operands in STMT matching FLAGS. */ | |
347 #define NUM_SSA_OPERANDS(STMT, FLAGS) num_ssa_operands (STMT, FLAGS) | |
348 | |
349 #endif /* GCC_TREE_SSA_OPERANDS_H */ |