|
0
|
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 */
|
