Mercurial > hg > CbC > CbC_gcc
annotate gcc/tree-dfa.c @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | b7f97abdc517 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Data flow functions for trees. |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 |
| 0 | 3 Free Software Foundation, Inc. |
| 4 Contributed by Diego Novillo <dnovillo@redhat.com> | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify | |
| 9 it under the terms of the GNU General Public License as published by | |
| 10 the Free Software Foundation; either version 3, or (at your option) | |
| 11 any later version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, | |
| 14 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 GNU General Public License 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 #include "config.h" | |
| 23 #include "system.h" | |
| 24 #include "coretypes.h" | |
| 25 #include "tm.h" | |
| 26 #include "hashtab.h" | |
| 27 #include "pointer-set.h" | |
| 28 #include "tree.h" | |
| 29 #include "tm_p.h" | |
| 30 #include "basic-block.h" | |
| 31 #include "output.h" | |
| 32 #include "timevar.h" | |
| 33 #include "ggc.h" | |
| 34 #include "langhooks.h" | |
| 35 #include "flags.h" | |
| 36 #include "function.h" | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
37 #include "tree-pretty-print.h" |
| 0 | 38 #include "tree-dump.h" |
| 39 #include "gimple.h" | |
| 40 #include "tree-flow.h" | |
| 41 #include "tree-inline.h" | |
| 42 #include "tree-pass.h" | |
| 43 #include "convert.h" | |
| 44 #include "params.h" | |
| 45 #include "cgraph.h" | |
| 46 | |
| 47 /* Build and maintain data flow information for trees. */ | |
| 48 | |
| 49 /* Counters used to display DFA and SSA statistics. */ | |
| 50 struct dfa_stats_d | |
| 51 { | |
| 52 long num_var_anns; | |
| 53 long num_defs; | |
| 54 long num_uses; | |
| 55 long num_phis; | |
| 56 long num_phi_args; | |
| 57 size_t max_num_phi_args; | |
| 58 long num_vdefs; | |
| 59 long num_vuses; | |
| 60 }; | |
| 61 | |
| 62 | |
| 63 /* Local functions. */ | |
| 64 static void collect_dfa_stats (struct dfa_stats_d *); | |
| 65 static tree find_vars_r (tree *, int *, void *); | |
| 66 | |
| 67 | |
| 68 /*--------------------------------------------------------------------------- | |
| 69 Dataflow analysis (DFA) routines | |
| 70 ---------------------------------------------------------------------------*/ | |
| 71 /* Find all the variables referenced in the function. This function | |
| 72 builds the global arrays REFERENCED_VARS and CALL_CLOBBERED_VARS. | |
| 73 | |
| 74 Note that this function does not look for statement operands, it simply | |
| 75 determines what variables are referenced in the program and detects | |
| 76 various attributes for each variable used by alias analysis and the | |
| 77 optimizer. */ | |
| 78 | |
| 79 static unsigned int | |
| 80 find_referenced_vars (void) | |
| 81 { | |
| 82 basic_block bb; | |
| 83 gimple_stmt_iterator si; | |
| 84 | |
| 85 FOR_EACH_BB (bb) | |
| 86 { | |
| 87 for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si)) | |
| 88 { | |
| 89 gimple stmt = gsi_stmt (si); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
90 if (is_gimple_debug (stmt)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
91 continue; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
92 find_referenced_vars_in (gsi_stmt (si)); |
| 0 | 93 } |
| 94 | |
| 95 for (si = gsi_start_phis (bb); !gsi_end_p (si); gsi_next (&si)) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
96 find_referenced_vars_in (gsi_stmt (si)); |
| 0 | 97 } |
| 98 | |
| 99 return 0; | |
| 100 } | |
| 101 | |
| 102 struct gimple_opt_pass pass_referenced_vars = | |
| 103 { | |
| 104 { | |
| 105 GIMPLE_PASS, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
106 "*referenced_vars", /* name */ |
| 0 | 107 NULL, /* gate */ |
| 108 find_referenced_vars, /* execute */ | |
| 109 NULL, /* sub */ | |
| 110 NULL, /* next */ | |
| 111 0, /* static_pass_number */ | |
| 112 TV_FIND_REFERENCED_VARS, /* tv_id */ | |
| 113 PROP_gimple_leh | PROP_cfg, /* properties_required */ | |
| 114 PROP_referenced_vars, /* properties_provided */ | |
| 115 0, /* properties_destroyed */ | |
| 116 TODO_dump_func, /* todo_flags_start */ | |
| 117 TODO_dump_func /* todo_flags_finish */ | |
| 118 } | |
| 119 }; | |
| 120 | |
| 121 | |
| 122 /*--------------------------------------------------------------------------- | |
| 123 Manage annotations | |
| 124 ---------------------------------------------------------------------------*/ | |
| 125 /* Create a new annotation for a _DECL node T. */ | |
| 126 | |
| 127 var_ann_t | |
| 128 create_var_ann (tree t) | |
| 129 { | |
| 130 var_ann_t ann; | |
| 131 | |
| 132 gcc_assert (t); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
133 gcc_assert (TREE_CODE (t) == VAR_DECL |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
134 || TREE_CODE (t) == PARM_DECL |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
135 || TREE_CODE (t) == RESULT_DECL); |
| 0 | 136 |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
137 ann = ggc_alloc_cleared_var_ann_d (); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
138 *DECL_VAR_ANN_PTR (t) = ann; |
| 0 | 139 |
| 140 return ann; | |
| 141 } | |
| 142 | |
| 143 /* Renumber all of the gimple stmt uids. */ | |
| 144 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
145 void |
| 0 | 146 renumber_gimple_stmt_uids (void) |
| 147 { | |
| 148 basic_block bb; | |
| 149 | |
| 150 set_gimple_stmt_max_uid (cfun, 0); | |
| 151 FOR_ALL_BB (bb) | |
| 152 { | |
| 153 gimple_stmt_iterator bsi; | |
| 154 for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) | |
| 155 { | |
| 156 gimple stmt = gsi_stmt (bsi); | |
| 157 gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); | |
| 158 } | |
| 159 } | |
| 160 } | |
| 161 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
162 /* Like renumber_gimple_stmt_uids, but only do work on the basic blocks |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
163 in BLOCKS, of which there are N_BLOCKS. Also renumbers PHIs. */ |
| 0 | 164 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
165 void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
166 renumber_gimple_stmt_uids_in_blocks (basic_block *blocks, int n_blocks) |
| 0 | 167 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
168 int i; |
| 0 | 169 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
170 set_gimple_stmt_max_uid (cfun, 0); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
171 for (i = 0; i < n_blocks; i++) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
172 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
173 basic_block bb = blocks[i]; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
174 gimple_stmt_iterator bsi; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
175 for (bsi = gsi_start_phis (bb); !gsi_end_p (bsi); gsi_next (&bsi)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
176 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
177 gimple stmt = gsi_stmt (bsi); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
178 gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
179 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
180 for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
181 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
182 gimple stmt = gsi_stmt (bsi); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
183 gimple_set_uid (stmt, inc_gimple_stmt_max_uid (cfun)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
184 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
185 } |
| 0 | 186 } |
| 187 | |
| 188 /* Build a temporary. Make sure and register it to be renamed. */ | |
| 189 | |
| 190 tree | |
| 191 make_rename_temp (tree type, const char *prefix) | |
| 192 { | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
193 tree t = create_tmp_reg (type, prefix); |
| 0 | 194 |
| 195 if (gimple_referenced_vars (cfun)) | |
| 196 { | |
| 197 add_referenced_var (t); | |
| 198 mark_sym_for_renaming (t); | |
| 199 } | |
| 200 | |
| 201 return t; | |
| 202 } | |
| 203 | |
| 204 | |
| 205 | |
| 206 /*--------------------------------------------------------------------------- | |
| 207 Debugging functions | |
| 208 ---------------------------------------------------------------------------*/ | |
| 209 /* Dump the list of all the referenced variables in the current function to | |
| 210 FILE. */ | |
| 211 | |
| 212 void | |
| 213 dump_referenced_vars (FILE *file) | |
| 214 { | |
| 215 tree var; | |
| 216 referenced_var_iterator rvi; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
217 |
| 0 | 218 fprintf (file, "\nReferenced variables in %s: %u\n\n", |
| 219 get_name (current_function_decl), (unsigned) num_referenced_vars); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
220 |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
221 FOR_EACH_REFERENCED_VAR (cfun, var, rvi) |
| 0 | 222 { |
| 223 fprintf (file, "Variable: "); | |
| 224 dump_variable (file, var); | |
| 225 } | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
226 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
227 fprintf (file, "\n"); |
| 0 | 228 } |
| 229 | |
| 230 | |
| 231 /* Dump the list of all the referenced variables to stderr. */ | |
| 232 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
233 DEBUG_FUNCTION void |
| 0 | 234 debug_referenced_vars (void) |
| 235 { | |
| 236 dump_referenced_vars (stderr); | |
| 237 } | |
| 238 | |
| 239 | |
| 240 /* Dump variable VAR and its may-aliases to FILE. */ | |
| 241 | |
| 242 void | |
| 243 dump_variable (FILE *file, tree var) | |
| 244 { | |
| 245 if (TREE_CODE (var) == SSA_NAME) | |
| 246 { | |
| 247 if (POINTER_TYPE_P (TREE_TYPE (var))) | |
| 248 dump_points_to_info_for (file, var); | |
| 249 var = SSA_NAME_VAR (var); | |
| 250 } | |
| 251 | |
| 252 if (var == NULL_TREE) | |
| 253 { | |
| 254 fprintf (file, "<nil>"); | |
| 255 return; | |
| 256 } | |
| 257 | |
| 258 print_generic_expr (file, var, dump_flags); | |
| 259 | |
| 260 fprintf (file, ", UID D.%u", (unsigned) DECL_UID (var)); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
261 if (DECL_PT_UID (var) != DECL_UID (var)) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
262 fprintf (file, ", PT-UID D.%u", (unsigned) DECL_PT_UID (var)); |
| 0 | 263 |
| 264 fprintf (file, ", "); | |
| 265 print_generic_expr (file, TREE_TYPE (var), dump_flags); | |
| 266 | |
| 267 if (TREE_ADDRESSABLE (var)) | |
| 268 fprintf (file, ", is addressable"); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
269 |
| 0 | 270 if (is_global_var (var)) |
| 271 fprintf (file, ", is global"); | |
| 272 | |
| 273 if (TREE_THIS_VOLATILE (var)) | |
| 274 fprintf (file, ", is volatile"); | |
| 275 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
276 if (cfun && gimple_default_def (cfun, var)) |
| 0 | 277 { |
| 278 fprintf (file, ", default def: "); | |
| 279 print_generic_expr (file, gimple_default_def (cfun, var), dump_flags); | |
| 280 } | |
| 281 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
282 if (DECL_INITIAL (var)) |
| 0 | 283 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
284 fprintf (file, ", initial: "); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
285 print_generic_expr (file, DECL_INITIAL (var), dump_flags); |
| 0 | 286 } |
| 287 | |
| 288 fprintf (file, "\n"); | |
| 289 } | |
| 290 | |
| 291 | |
| 292 /* Dump variable VAR and its may-aliases to stderr. */ | |
| 293 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
294 DEBUG_FUNCTION void |
| 0 | 295 debug_variable (tree var) |
| 296 { | |
| 297 dump_variable (stderr, var); | |
| 298 } | |
| 299 | |
| 300 | |
| 301 /* Dump various DFA statistics to FILE. */ | |
| 302 | |
| 303 void | |
| 304 dump_dfa_stats (FILE *file) | |
| 305 { | |
| 306 struct dfa_stats_d dfa_stats; | |
| 307 | |
| 308 unsigned long size, total = 0; | |
| 309 const char * const fmt_str = "%-30s%-13s%12s\n"; | |
| 310 const char * const fmt_str_1 = "%-30s%13lu%11lu%c\n"; | |
| 311 const char * const fmt_str_3 = "%-43s%11lu%c\n"; | |
| 312 const char *funcname | |
| 313 = lang_hooks.decl_printable_name (current_function_decl, 2); | |
| 314 | |
| 315 collect_dfa_stats (&dfa_stats); | |
| 316 | |
| 317 fprintf (file, "\nDFA Statistics for %s\n\n", funcname); | |
| 318 | |
| 319 fprintf (file, "---------------------------------------------------------\n"); | |
| 320 fprintf (file, fmt_str, "", " Number of ", "Memory"); | |
| 321 fprintf (file, fmt_str, "", " instances ", "used "); | |
| 322 fprintf (file, "---------------------------------------------------------\n"); | |
| 323 | |
| 324 size = num_referenced_vars * sizeof (tree); | |
| 325 total += size; | |
| 326 fprintf (file, fmt_str_1, "Referenced variables", (unsigned long)num_referenced_vars, | |
| 327 SCALE (size), LABEL (size)); | |
| 328 | |
| 329 size = dfa_stats.num_var_anns * sizeof (struct var_ann_d); | |
| 330 total += size; | |
| 331 fprintf (file, fmt_str_1, "Variables annotated", dfa_stats.num_var_anns, | |
| 332 SCALE (size), LABEL (size)); | |
| 333 | |
| 334 size = dfa_stats.num_uses * sizeof (tree *); | |
| 335 total += size; | |
| 336 fprintf (file, fmt_str_1, "USE operands", dfa_stats.num_uses, | |
| 337 SCALE (size), LABEL (size)); | |
| 338 | |
| 339 size = dfa_stats.num_defs * sizeof (tree *); | |
| 340 total += size; | |
| 341 fprintf (file, fmt_str_1, "DEF operands", dfa_stats.num_defs, | |
| 342 SCALE (size), LABEL (size)); | |
| 343 | |
| 344 size = dfa_stats.num_vuses * sizeof (tree *); | |
| 345 total += size; | |
| 346 fprintf (file, fmt_str_1, "VUSE operands", dfa_stats.num_vuses, | |
| 347 SCALE (size), LABEL (size)); | |
| 348 | |
| 349 size = dfa_stats.num_vdefs * sizeof (tree *); | |
| 350 total += size; | |
| 351 fprintf (file, fmt_str_1, "VDEF operands", dfa_stats.num_vdefs, | |
| 352 SCALE (size), LABEL (size)); | |
| 353 | |
| 354 size = dfa_stats.num_phis * sizeof (struct gimple_statement_phi); | |
| 355 total += size; | |
| 356 fprintf (file, fmt_str_1, "PHI nodes", dfa_stats.num_phis, | |
| 357 SCALE (size), LABEL (size)); | |
| 358 | |
| 359 size = dfa_stats.num_phi_args * sizeof (struct phi_arg_d); | |
| 360 total += size; | |
| 361 fprintf (file, fmt_str_1, "PHI arguments", dfa_stats.num_phi_args, | |
| 362 SCALE (size), LABEL (size)); | |
| 363 | |
| 364 fprintf (file, "---------------------------------------------------------\n"); | |
| 365 fprintf (file, fmt_str_3, "Total memory used by DFA/SSA data", SCALE (total), | |
| 366 LABEL (total)); | |
| 367 fprintf (file, "---------------------------------------------------------\n"); | |
| 368 fprintf (file, "\n"); | |
| 369 | |
| 370 if (dfa_stats.num_phis) | |
| 371 fprintf (file, "Average number of arguments per PHI node: %.1f (max: %ld)\n", | |
| 372 (float) dfa_stats.num_phi_args / (float) dfa_stats.num_phis, | |
| 373 (long) dfa_stats.max_num_phi_args); | |
| 374 | |
| 375 fprintf (file, "\n"); | |
| 376 } | |
| 377 | |
| 378 | |
| 379 /* Dump DFA statistics on stderr. */ | |
| 380 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
381 DEBUG_FUNCTION void |
| 0 | 382 debug_dfa_stats (void) |
| 383 { | |
| 384 dump_dfa_stats (stderr); | |
| 385 } | |
| 386 | |
| 387 | |
| 388 /* Collect DFA statistics and store them in the structure pointed to by | |
| 389 DFA_STATS_P. */ | |
| 390 | |
| 391 static void | |
| 392 collect_dfa_stats (struct dfa_stats_d *dfa_stats_p ATTRIBUTE_UNUSED) | |
| 393 { | |
| 394 basic_block bb; | |
| 395 referenced_var_iterator vi; | |
| 396 tree var; | |
| 397 | |
| 398 gcc_assert (dfa_stats_p); | |
| 399 | |
| 400 memset ((void *)dfa_stats_p, 0, sizeof (struct dfa_stats_d)); | |
| 401 | |
| 402 /* Count all the variable annotations. */ | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
403 FOR_EACH_REFERENCED_VAR (cfun, var, vi) |
| 0 | 404 if (var_ann (var)) |
| 405 dfa_stats_p->num_var_anns++; | |
| 406 | |
| 407 /* Walk all the statements in the function counting references. */ | |
| 408 FOR_EACH_BB (bb) | |
| 409 { | |
| 410 gimple_stmt_iterator si; | |
| 411 | |
| 412 for (si = gsi_start_phis (bb); !gsi_end_p (si); gsi_next (&si)) | |
| 413 { | |
| 414 gimple phi = gsi_stmt (si); | |
| 415 dfa_stats_p->num_phis++; | |
| 416 dfa_stats_p->num_phi_args += gimple_phi_num_args (phi); | |
| 417 if (gimple_phi_num_args (phi) > dfa_stats_p->max_num_phi_args) | |
| 418 dfa_stats_p->max_num_phi_args = gimple_phi_num_args (phi); | |
| 419 } | |
| 420 | |
| 421 for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si)) | |
| 422 { | |
| 423 gimple stmt = gsi_stmt (si); | |
| 424 dfa_stats_p->num_defs += NUM_SSA_OPERANDS (stmt, SSA_OP_DEF); | |
| 425 dfa_stats_p->num_uses += NUM_SSA_OPERANDS (stmt, SSA_OP_USE); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
426 dfa_stats_p->num_vdefs += gimple_vdef (stmt) ? 1 : 0; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
427 dfa_stats_p->num_vuses += gimple_vuse (stmt) ? 1 : 0; |
| 0 | 428 } |
| 429 } | |
| 430 } | |
| 431 | |
| 432 | |
| 433 /*--------------------------------------------------------------------------- | |
| 434 Miscellaneous helpers | |
| 435 ---------------------------------------------------------------------------*/ | |
| 436 /* Callback for walk_tree. Used to collect variables referenced in | |
| 437 the function. */ | |
| 438 | |
| 439 static tree | |
| 440 find_vars_r (tree *tp, int *walk_subtrees, void *data ATTRIBUTE_UNUSED) | |
| 441 { | |
| 442 /* If we are reading the lto info back in, we need to rescan the | |
| 443 referenced vars. */ | |
| 444 if (TREE_CODE (*tp) == SSA_NAME) | |
| 445 add_referenced_var (SSA_NAME_VAR (*tp)); | |
| 446 | |
| 447 /* If T is a regular variable that the optimizers are interested | |
| 448 in, add it to the list of variables. */ | |
| 449 else if (SSA_VAR_P (*tp)) | |
| 450 add_referenced_var (*tp); | |
| 451 | |
| 452 /* Type, _DECL and constant nodes have no interesting children. | |
| 453 Ignore them. */ | |
| 454 else if (IS_TYPE_OR_DECL_P (*tp) || CONSTANT_CLASS_P (*tp)) | |
| 455 *walk_subtrees = 0; | |
| 456 | |
| 457 return NULL_TREE; | |
| 458 } | |
| 459 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
460 /* Find referenced variables in STMT. In contrast with |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
461 find_new_referenced_vars, this function will not mark newly found |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
462 variables for renaming. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
463 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
464 void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
465 find_referenced_vars_in (gimple stmt) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
466 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
467 size_t i; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
468 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
469 if (gimple_code (stmt) != GIMPLE_PHI) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
470 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
471 for (i = 0; i < gimple_num_ops (stmt); i++) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
472 walk_tree (gimple_op_ptr (stmt, i), find_vars_r, NULL, NULL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
473 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
474 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
475 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
476 walk_tree (gimple_phi_result_ptr (stmt), find_vars_r, NULL, NULL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
477 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
478 for (i = 0; i < gimple_phi_num_args (stmt); i++) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
479 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
480 tree arg = gimple_phi_arg_def (stmt, i); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
481 walk_tree (&arg, find_vars_r, NULL, NULL); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
482 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
483 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
484 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
485 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
486 |
| 0 | 487 /* Lookup UID in the referenced_vars hashtable and return the associated |
| 488 variable. */ | |
| 489 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
490 tree |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
491 referenced_var_lookup (struct function *fn, unsigned int uid) |
| 0 | 492 { |
| 493 tree h; | |
| 494 struct tree_decl_minimal in; | |
| 495 in.uid = uid; | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
496 h = (tree) htab_find_with_hash (gimple_referenced_vars (fn), &in, uid); |
| 0 | 497 return h; |
| 498 } | |
| 499 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
500 /* Check if TO is in the referenced_vars hash table and insert it if not. |
| 0 | 501 Return true if it required insertion. */ |
| 502 | |
| 503 bool | |
| 504 referenced_var_check_and_insert (tree to) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
505 { |
| 0 | 506 tree h, *loc; |
| 507 struct tree_decl_minimal in; | |
| 508 unsigned int uid = DECL_UID (to); | |
| 509 | |
| 510 in.uid = uid; | |
| 511 h = (tree) htab_find_with_hash (gimple_referenced_vars (cfun), &in, uid); | |
| 512 if (h) | |
| 513 { | |
| 514 /* DECL_UID has already been entered in the table. Verify that it is | |
| 515 the same entry as TO. See PR 27793. */ | |
| 516 gcc_assert (h == to); | |
| 517 return false; | |
| 518 } | |
| 519 | |
| 520 loc = (tree *) htab_find_slot_with_hash (gimple_referenced_vars (cfun), | |
| 521 &in, uid, INSERT); | |
| 522 *loc = to; | |
| 523 return true; | |
| 524 } | |
| 525 | |
| 526 /* Lookup VAR UID in the default_defs hashtable and return the associated | |
| 527 variable. */ | |
| 528 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
529 tree |
| 0 | 530 gimple_default_def (struct function *fn, tree var) |
| 531 { | |
| 532 struct tree_decl_minimal ind; | |
| 533 struct tree_ssa_name in; | |
| 534 gcc_assert (SSA_VAR_P (var)); | |
| 535 in.var = (tree)&ind; | |
| 536 ind.uid = DECL_UID (var); | |
| 537 return (tree) htab_find_with_hash (DEFAULT_DEFS (fn), &in, DECL_UID (var)); | |
| 538 } | |
| 539 | |
| 540 /* Insert the pair VAR's UID, DEF into the default_defs hashtable. */ | |
| 541 | |
| 542 void | |
| 543 set_default_def (tree var, tree def) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
544 { |
| 0 | 545 struct tree_decl_minimal ind; |
| 546 struct tree_ssa_name in; | |
| 547 void **loc; | |
| 548 | |
| 549 gcc_assert (SSA_VAR_P (var)); | |
| 550 in.var = (tree)&ind; | |
| 551 ind.uid = DECL_UID (var); | |
| 552 if (!def) | |
| 553 { | |
| 554 loc = htab_find_slot_with_hash (DEFAULT_DEFS (cfun), &in, | |
| 555 DECL_UID (var), INSERT); | |
| 556 gcc_assert (*loc); | |
| 557 htab_remove_elt (DEFAULT_DEFS (cfun), *loc); | |
| 558 return; | |
| 559 } | |
| 560 gcc_assert (TREE_CODE (def) == SSA_NAME && SSA_NAME_VAR (def) == var); | |
| 561 loc = htab_find_slot_with_hash (DEFAULT_DEFS (cfun), &in, | |
| 562 DECL_UID (var), INSERT); | |
| 563 | |
| 564 /* Default definition might be changed by tail call optimization. */ | |
| 565 if (*loc) | |
| 566 SSA_NAME_IS_DEFAULT_DEF (*(tree *) loc) = false; | |
| 567 *(tree *) loc = def; | |
| 568 | |
| 569 /* Mark DEF as the default definition for VAR. */ | |
| 570 SSA_NAME_IS_DEFAULT_DEF (def) = true; | |
| 571 } | |
| 572 | |
| 573 /* Add VAR to the list of referenced variables if it isn't already there. */ | |
| 574 | |
| 575 bool | |
| 576 add_referenced_var (tree var) | |
| 577 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
578 get_var_ann (var); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
579 gcc_assert (DECL_P (var)); |
| 0 | 580 |
| 581 /* Insert VAR into the referenced_vars has table if it isn't present. */ | |
| 582 if (referenced_var_check_and_insert (var)) | |
| 583 { | |
| 584 /* Scan DECL_INITIAL for pointer variables as they may contain | |
| 585 address arithmetic referencing the address of other | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
586 variables. As we are only interested in directly referenced |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
587 globals or referenced locals restrict this to initializers |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
588 than can refer to local variables. */ |
| 0 | 589 if (DECL_INITIAL (var) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
590 && DECL_CONTEXT (var) == current_function_decl) |
| 0 | 591 walk_tree (&DECL_INITIAL (var), find_vars_r, NULL, 0); |
| 592 | |
| 593 return true; | |
| 594 } | |
| 595 | |
| 596 return false; | |
| 597 } | |
| 598 | |
| 599 /* Remove VAR from the list. */ | |
| 600 | |
| 601 void | |
| 602 remove_referenced_var (tree var) | |
| 603 { | |
| 604 var_ann_t v_ann; | |
| 605 struct tree_decl_minimal in; | |
| 606 void **loc; | |
| 607 unsigned int uid = DECL_UID (var); | |
| 608 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
609 /* Preserve var_anns of globals. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
610 if (!is_global_var (var) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
611 && (v_ann = var_ann (var))) |
| 0 | 612 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
613 ggc_free (v_ann); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
614 *DECL_VAR_ANN_PTR (var) = NULL; |
| 0 | 615 } |
| 616 gcc_assert (DECL_P (var)); | |
| 617 in.uid = uid; | |
| 618 loc = htab_find_slot_with_hash (gimple_referenced_vars (cfun), &in, uid, | |
| 619 NO_INSERT); | |
| 620 htab_clear_slot (gimple_referenced_vars (cfun), loc); | |
| 621 } | |
| 622 | |
| 623 | |
| 624 /* Return the virtual variable associated to the non-scalar variable VAR. */ | |
| 625 | |
| 626 tree | |
| 627 get_virtual_var (tree var) | |
| 628 { | |
| 629 STRIP_NOPS (var); | |
| 630 | |
| 631 if (TREE_CODE (var) == SSA_NAME) | |
| 632 var = SSA_NAME_VAR (var); | |
| 633 | |
| 634 while (TREE_CODE (var) == REALPART_EXPR || TREE_CODE (var) == IMAGPART_EXPR | |
| 635 || handled_component_p (var)) | |
| 636 var = TREE_OPERAND (var, 0); | |
| 637 | |
| 638 /* Treating GIMPLE registers as virtual variables makes no sense. | |
| 639 Also complain if we couldn't extract a _DECL out of the original | |
| 640 expression. */ | |
| 641 gcc_assert (SSA_VAR_P (var)); | |
| 642 gcc_assert (!is_gimple_reg (var)); | |
| 643 | |
| 644 return var; | |
| 645 } | |
| 646 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
647 /* Mark all the naked symbols in STMT for SSA renaming. */ |
| 0 | 648 |
| 649 void | |
| 650 mark_symbols_for_renaming (gimple stmt) | |
| 651 { | |
| 652 tree op; | |
| 653 ssa_op_iter iter; | |
| 654 | |
| 655 update_stmt (stmt); | |
| 656 | |
| 657 /* Mark all the operands for renaming. */ | |
| 658 FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_ALL_OPERANDS) | |
| 659 if (DECL_P (op)) | |
| 660 mark_sym_for_renaming (op); | |
| 661 } | |
| 662 | |
| 663 | |
| 664 /* Find all variables within the gimplified statement that were not | |
| 665 previously visible to the function and add them to the referenced | |
| 666 variables list. */ | |
| 667 | |
| 668 static tree | |
| 669 find_new_referenced_vars_1 (tree *tp, int *walk_subtrees, | |
| 670 void *data ATTRIBUTE_UNUSED) | |
| 671 { | |
| 672 tree t = *tp; | |
| 673 | |
| 674 if (TREE_CODE (t) == VAR_DECL && !var_ann (t)) | |
| 675 { | |
| 676 add_referenced_var (t); | |
| 677 mark_sym_for_renaming (t); | |
| 678 } | |
| 679 | |
| 680 if (IS_TYPE_OR_DECL_P (t)) | |
| 681 *walk_subtrees = 0; | |
| 682 | |
| 683 return NULL; | |
| 684 } | |
| 685 | |
| 686 | |
| 687 /* Find any new referenced variables in STMT. */ | |
| 688 | |
| 689 void | |
| 690 find_new_referenced_vars (gimple stmt) | |
| 691 { | |
| 692 walk_gimple_op (stmt, find_new_referenced_vars_1, NULL); | |
| 693 } | |
| 694 | |
| 695 | |
| 696 /* If EXP is a handled component reference for a structure, return the | |
| 697 base variable. The access range is delimited by bit positions *POFFSET and | |
| 698 *POFFSET + *PMAX_SIZE. The access size is *PSIZE bits. If either | |
| 699 *PSIZE or *PMAX_SIZE is -1, they could not be determined. If *PSIZE | |
| 700 and *PMAX_SIZE are equal, the access is non-variable. */ | |
| 701 | |
| 702 tree | |
| 703 get_ref_base_and_extent (tree exp, HOST_WIDE_INT *poffset, | |
| 704 HOST_WIDE_INT *psize, | |
| 705 HOST_WIDE_INT *pmax_size) | |
| 706 { | |
| 707 HOST_WIDE_INT bitsize = -1; | |
| 708 HOST_WIDE_INT maxsize = -1; | |
| 709 tree size_tree = NULL_TREE; | |
| 710 HOST_WIDE_INT bit_offset = 0; | |
| 711 bool seen_variable_array_ref = false; | |
| 712 | |
| 713 /* First get the final access size from just the outermost expression. */ | |
| 714 if (TREE_CODE (exp) == COMPONENT_REF) | |
| 715 size_tree = DECL_SIZE (TREE_OPERAND (exp, 1)); | |
| 716 else if (TREE_CODE (exp) == BIT_FIELD_REF) | |
| 717 size_tree = TREE_OPERAND (exp, 1); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
718 else if (!VOID_TYPE_P (TREE_TYPE (exp))) |
| 0 | 719 { |
| 720 enum machine_mode mode = TYPE_MODE (TREE_TYPE (exp)); | |
| 721 if (mode == BLKmode) | |
| 722 size_tree = TYPE_SIZE (TREE_TYPE (exp)); | |
| 723 else | |
| 724 bitsize = GET_MODE_BITSIZE (mode); | |
| 725 } | |
| 726 if (size_tree != NULL_TREE) | |
| 727 { | |
| 728 if (! host_integerp (size_tree, 1)) | |
| 729 bitsize = -1; | |
| 730 else | |
| 731 bitsize = TREE_INT_CST_LOW (size_tree); | |
| 732 } | |
| 733 | |
| 734 /* Initially, maxsize is the same as the accessed element size. | |
| 735 In the following it will only grow (or become -1). */ | |
| 736 maxsize = bitsize; | |
| 737 | |
| 738 /* Compute cumulative bit-offset for nested component-refs and array-refs, | |
| 739 and find the ultimate containing object. */ | |
| 740 while (1) | |
| 741 { | |
| 742 switch (TREE_CODE (exp)) | |
| 743 { | |
| 744 case BIT_FIELD_REF: | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
745 bit_offset += TREE_INT_CST_LOW (TREE_OPERAND (exp, 2)); |
| 0 | 746 break; |
| 747 | |
| 748 case COMPONENT_REF: | |
| 749 { | |
| 750 tree field = TREE_OPERAND (exp, 1); | |
| 751 tree this_offset = component_ref_field_offset (exp); | |
| 752 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
753 if (this_offset |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
754 && TREE_CODE (this_offset) == INTEGER_CST |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
755 && host_integerp (this_offset, 0)) |
| 0 | 756 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
757 HOST_WIDE_INT hthis_offset = TREE_INT_CST_LOW (this_offset); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
758 hthis_offset *= BITS_PER_UNIT; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
759 hthis_offset |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
760 += TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
761 bit_offset += hthis_offset; |
| 0 | 762 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
763 /* If we had seen a variable array ref already and we just |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
764 referenced the last field of a struct or a union member |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
765 then we have to adjust maxsize by the padding at the end |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
766 of our field. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
767 if (seen_variable_array_ref |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
768 && maxsize != -1) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
769 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
770 tree stype = TREE_TYPE (TREE_OPERAND (exp, 0)); |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
771 tree next = DECL_CHAIN (field); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
772 while (next && TREE_CODE (next) != FIELD_DECL) |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
773 next = DECL_CHAIN (next); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
774 if (!next |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
775 || TREE_CODE (stype) != RECORD_TYPE) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
776 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
777 tree fsize = DECL_SIZE_UNIT (field); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
778 tree ssize = TYPE_SIZE_UNIT (stype); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
779 if (host_integerp (fsize, 0) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
780 && host_integerp (ssize, 0)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
781 maxsize += ((TREE_INT_CST_LOW (ssize) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
782 - TREE_INT_CST_LOW (fsize)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
783 * BITS_PER_UNIT - hthis_offset); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
784 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
785 maxsize = -1; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
786 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
787 } |
| 0 | 788 } |
| 789 else | |
| 790 { | |
| 791 tree csize = TYPE_SIZE (TREE_TYPE (TREE_OPERAND (exp, 0))); | |
| 792 /* We need to adjust maxsize to the whole structure bitsize. | |
| 793 But we can subtract any constant offset seen so far, | |
| 794 because that would get us out of the structure otherwise. */ | |
| 795 if (maxsize != -1 && csize && host_integerp (csize, 1)) | |
| 796 maxsize = TREE_INT_CST_LOW (csize) - bit_offset; | |
| 797 else | |
| 798 maxsize = -1; | |
| 799 } | |
| 800 } | |
| 801 break; | |
| 802 | |
| 803 case ARRAY_REF: | |
| 804 case ARRAY_RANGE_REF: | |
| 805 { | |
| 806 tree index = TREE_OPERAND (exp, 1); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
807 tree low_bound, unit_size; |
| 0 | 808 |
| 809 /* If the resulting bit-offset is constant, track it. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
810 if (TREE_CODE (index) == INTEGER_CST |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
811 && host_integerp (index, 0) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
812 && (low_bound = array_ref_low_bound (exp), |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
813 host_integerp (low_bound, 0)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
814 && (unit_size = array_ref_element_size (exp), |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
815 host_integerp (unit_size, 1))) |
| 0 | 816 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
817 HOST_WIDE_INT hindex = TREE_INT_CST_LOW (index); |
| 0 | 818 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
819 hindex -= TREE_INT_CST_LOW (low_bound); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
820 hindex *= TREE_INT_CST_LOW (unit_size); |
| 0 | 821 hindex *= BITS_PER_UNIT; |
| 822 bit_offset += hindex; | |
| 823 | |
| 824 /* An array ref with a constant index up in the structure | |
| 825 hierarchy will constrain the size of any variable array ref | |
| 826 lower in the access hierarchy. */ | |
| 827 seen_variable_array_ref = false; | |
| 828 } | |
| 829 else | |
| 830 { | |
| 831 tree asize = TYPE_SIZE (TREE_TYPE (TREE_OPERAND (exp, 0))); | |
| 832 /* We need to adjust maxsize to the whole array bitsize. | |
| 833 But we can subtract any constant offset seen so far, | |
| 834 because that would get us outside of the array otherwise. */ | |
| 835 if (maxsize != -1 && asize && host_integerp (asize, 1)) | |
| 836 maxsize = TREE_INT_CST_LOW (asize) - bit_offset; | |
| 837 else | |
| 838 maxsize = -1; | |
| 839 | |
| 840 /* Remember that we have seen an array ref with a variable | |
| 841 index. */ | |
| 842 seen_variable_array_ref = true; | |
| 843 } | |
| 844 } | |
| 845 break; | |
| 846 | |
| 847 case REALPART_EXPR: | |
| 848 break; | |
| 849 | |
| 850 case IMAGPART_EXPR: | |
| 851 bit_offset += bitsize; | |
| 852 break; | |
| 853 | |
| 854 case VIEW_CONVERT_EXPR: | |
| 855 break; | |
| 856 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
857 case MEM_REF: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
858 /* Hand back the decl for MEM[&decl, off]. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
859 if (TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
860 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
861 if (integer_zerop (TREE_OPERAND (exp, 1))) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
862 exp = TREE_OPERAND (TREE_OPERAND (exp, 0), 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
863 else |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
864 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
865 double_int off = mem_ref_offset (exp); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
866 off = double_int_lshift (off, |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
867 BITS_PER_UNIT == 8 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
868 ? 3 : exact_log2 (BITS_PER_UNIT), |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
869 HOST_BITS_PER_DOUBLE_INT, true); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
870 off = double_int_add (off, shwi_to_double_int (bit_offset)); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
871 if (double_int_fits_in_shwi_p (off)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
872 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
873 bit_offset = double_int_to_shwi (off); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
874 exp = TREE_OPERAND (TREE_OPERAND (exp, 0), 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
875 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
876 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
877 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
878 goto done; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
879 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
880 case TARGET_MEM_REF: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
881 /* Hand back the decl for MEM[&decl, off]. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
882 if (TREE_CODE (TMR_BASE (exp)) == ADDR_EXPR) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
883 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
884 /* Via the variable index or index2 we can reach the |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
885 whole object. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
886 if (TMR_INDEX (exp) || TMR_INDEX2 (exp)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
887 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
888 exp = TREE_OPERAND (TMR_BASE (exp), 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
889 bit_offset = 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
890 maxsize = -1; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
891 goto done; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
892 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
893 if (integer_zerop (TMR_OFFSET (exp))) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
894 exp = TREE_OPERAND (TMR_BASE (exp), 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
895 else |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
896 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
897 double_int off = mem_ref_offset (exp); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
898 off = double_int_lshift (off, |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
899 BITS_PER_UNIT == 8 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
900 ? 3 : exact_log2 (BITS_PER_UNIT), |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
901 HOST_BITS_PER_DOUBLE_INT, true); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
902 off = double_int_add (off, shwi_to_double_int (bit_offset)); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
903 if (double_int_fits_in_shwi_p (off)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
904 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
905 bit_offset = double_int_to_shwi (off); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
906 exp = TREE_OPERAND (TMR_BASE (exp), 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
907 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
908 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
909 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
910 goto done; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
911 |
| 0 | 912 default: |
| 913 goto done; | |
| 914 } | |
| 915 | |
| 916 exp = TREE_OPERAND (exp, 0); | |
| 917 } | |
| 918 done: | |
| 919 | |
| 920 /* We need to deal with variable arrays ending structures such as | |
| 921 struct { int length; int a[1]; } x; x.a[d] | |
| 922 struct { struct { int a; int b; } a[1]; } x; x.a[d].a | |
| 923 struct { struct { int a[1]; } a[1]; } x; x.a[0][d], x.a[d][0] | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
924 struct { int len; union { int a[1]; struct X x; } u; } x; x.u.a[d] |
| 0 | 925 where we do not know maxsize for variable index accesses to |
| 926 the array. The simplest way to conservatively deal with this | |
| 927 is to punt in the case that offset + maxsize reaches the | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
928 base type boundary. This needs to include possible trailing padding |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
929 that is there for alignment purposes. |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
930 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
931 That is of course only true if the base object is not a decl. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
932 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
933 if (DECL_P (exp)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
934 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
935 /* If maxsize is unknown adjust it according to the size of the |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
936 base decl. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
937 if (maxsize == -1 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
938 && host_integerp (DECL_SIZE (exp), 1)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
939 maxsize = TREE_INT_CST_LOW (DECL_SIZE (exp)) - bit_offset; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
940 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
941 else if (seen_variable_array_ref |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
942 && maxsize != -1 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
943 && (!host_integerp (TYPE_SIZE (TREE_TYPE (exp)), 1) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
944 || (bit_offset + maxsize |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
945 == (signed) TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (exp)))))) |
| 0 | 946 maxsize = -1; |
| 947 | |
| 948 /* ??? Due to negative offsets in ARRAY_REF we can end up with | |
| 949 negative bit_offset here. We might want to store a zero offset | |
| 950 in this case. */ | |
| 951 *poffset = bit_offset; | |
| 952 *psize = bitsize; | |
| 953 *pmax_size = maxsize; | |
| 954 | |
| 955 return exp; | |
| 956 } | |
| 957 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
958 /* Returns the base object and a constant BITS_PER_UNIT offset in *POFFSET that |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
959 denotes the starting address of the memory access EXP. |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
960 Returns NULL_TREE if the offset is not constant or any component |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
961 is not BITS_PER_UNIT-aligned. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
962 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
963 tree |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
964 get_addr_base_and_unit_offset (tree exp, HOST_WIDE_INT *poffset) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
965 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
966 HOST_WIDE_INT byte_offset = 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
967 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
968 /* Compute cumulative byte-offset for nested component-refs and array-refs, |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
969 and find the ultimate containing object. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
970 while (1) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
971 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
972 switch (TREE_CODE (exp)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
973 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
974 case BIT_FIELD_REF: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
975 return NULL_TREE; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
976 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
977 case COMPONENT_REF: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
978 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
979 tree field = TREE_OPERAND (exp, 1); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
980 tree this_offset = component_ref_field_offset (exp); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
981 HOST_WIDE_INT hthis_offset; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
982 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
983 if (!this_offset |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
984 || TREE_CODE (this_offset) != INTEGER_CST |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
985 || (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
986 % BITS_PER_UNIT)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
987 return NULL_TREE; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
988 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
989 hthis_offset = TREE_INT_CST_LOW (this_offset); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
990 hthis_offset += (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
991 / BITS_PER_UNIT); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
992 byte_offset += hthis_offset; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
993 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
994 break; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
995 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
996 case ARRAY_REF: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
997 case ARRAY_RANGE_REF: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
998 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
999 tree index = TREE_OPERAND (exp, 1); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1000 tree low_bound, unit_size; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1001 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1002 /* If the resulting bit-offset is constant, track it. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1003 if (TREE_CODE (index) == INTEGER_CST |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1004 && (low_bound = array_ref_low_bound (exp), |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1005 TREE_CODE (low_bound) == INTEGER_CST) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1006 && (unit_size = array_ref_element_size (exp), |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1007 TREE_CODE (unit_size) == INTEGER_CST)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1008 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1009 HOST_WIDE_INT hindex = TREE_INT_CST_LOW (index); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1010 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1011 hindex -= TREE_INT_CST_LOW (low_bound); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1012 hindex *= TREE_INT_CST_LOW (unit_size); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1013 byte_offset += hindex; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1014 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1015 else |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1016 return NULL_TREE; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1017 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1018 break; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1019 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1020 case REALPART_EXPR: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1021 break; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1022 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1023 case IMAGPART_EXPR: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1024 byte_offset += TREE_INT_CST_LOW (TYPE_SIZE_UNIT (TREE_TYPE (exp))); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1025 break; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1026 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1027 case VIEW_CONVERT_EXPR: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1028 break; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1029 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1030 case MEM_REF: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1031 /* Hand back the decl for MEM[&decl, off]. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1032 if (TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1033 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1034 if (!integer_zerop (TREE_OPERAND (exp, 1))) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1035 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1036 double_int off = mem_ref_offset (exp); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1037 gcc_assert (off.high == -1 || off.high == 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1038 byte_offset += double_int_to_shwi (off); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1039 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1040 exp = TREE_OPERAND (TREE_OPERAND (exp, 0), 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1041 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1042 goto done; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1043 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1044 case TARGET_MEM_REF: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1045 /* Hand back the decl for MEM[&decl, off]. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1046 if (TREE_CODE (TMR_BASE (exp)) == ADDR_EXPR) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1047 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1048 if (TMR_INDEX (exp) || TMR_INDEX2 (exp)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1049 return NULL_TREE; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1050 if (!integer_zerop (TMR_OFFSET (exp))) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1051 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1052 double_int off = mem_ref_offset (exp); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1053 gcc_assert (off.high == -1 || off.high == 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1054 byte_offset += double_int_to_shwi (off); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1055 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1056 exp = TREE_OPERAND (TMR_BASE (exp), 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1057 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1058 goto done; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1059 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1060 default: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1061 goto done; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1062 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1063 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1064 exp = TREE_OPERAND (exp, 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1065 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1066 done: |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1067 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1068 *poffset = byte_offset; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1069 return exp; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1070 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1071 |
| 0 | 1072 /* Returns true if STMT references an SSA_NAME that has |
| 1073 SSA_NAME_OCCURS_IN_ABNORMAL_PHI set, otherwise false. */ | |
| 1074 | |
| 1075 bool | |
| 1076 stmt_references_abnormal_ssa_name (gimple stmt) | |
| 1077 { | |
| 1078 ssa_op_iter oi; | |
| 1079 use_operand_p use_p; | |
| 1080 | |
| 1081 FOR_EACH_SSA_USE_OPERAND (use_p, stmt, oi, SSA_OP_USE) | |
| 1082 { | |
| 1083 if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (USE_FROM_PTR (use_p))) | |
| 1084 return true; | |
| 1085 } | |
| 1086 | |
| 1087 return false; | |
| 1088 } | |
| 1089 |