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1 | /* Functions for LTO dump tool. |
2 | Copyright (C) 2018-2019 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 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "coretypes.h" | |
23 | #include "tm.h" | |
24 | #include "function.h" | |
25 | #include "basic-block.h" | |
26 | #include "tree.h" | |
27 | #include "gimple.h" | |
28 | #include "cfg.h" | |
29 | #include "tree-cfg.h" | |
30 | #include "tree-pass.h" | |
31 | #include "tree-streamer.h" | |
32 | #include "cgraph.h" | |
33 | #include "opts.h" | |
34 | #include "debug.h" | |
35 | #include "lto-partition.h" | |
36 | #include "tree-pretty-print.h" | |
37 | #include "lto-common.h" | |
38 | ||
39 | /* Stores details of symbols for dumping symbol list. */ | |
40 | ||
41 | struct symbol_entry | |
42 | { | |
43 | symtab_node *node; | |
44 | symbol_entry (symtab_node *node_): node (node_) | |
45 | {} | |
46 | ||
47 | char* get_name () const | |
48 | { | |
49 | if (flag_lto_dump_demangle) | |
50 | return xstrdup (node->name ()); | |
51 | else | |
52 | return xstrdup (node->asm_name ()); | |
53 | } | |
54 | ||
55 | virtual size_t get_size () const = 0; | |
56 | ||
57 | virtual void dump () | |
58 | { | |
59 | const char *name = get_name (); | |
60 | const char *type_name = node->get_symtab_type_string (); | |
61 | const char *visibility = node->get_visibility_string (); | |
62 | size_t sz = get_size (); | |
63 | printf ("%s %s %4lu %s ", type_name, visibility, sz, name); | |
64 | } | |
65 | }; | |
66 | ||
67 | /* Stores variable specific details of symbols for dumping symbol list. */ | |
68 | ||
69 | struct variable_entry: public symbol_entry | |
70 | { | |
71 | variable_entry (varpool_node *node_): symbol_entry (node_) | |
72 | {} | |
73 | ||
74 | virtual size_t get_size () const | |
75 | { | |
76 | varpool_node *vnode = dyn_cast<varpool_node *> (node); | |
77 | if (DECL_SIZE (vnode->decl) && tree_fits_shwi_p (DECL_SIZE (vnode->decl))) | |
78 | return tree_to_shwi (DECL_SIZE (vnode->decl)); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | virtual void dump () | |
83 | { | |
84 | symbol_entry :: dump (); | |
85 | varpool_node *vnode = dyn_cast<varpool_node *> (node); | |
86 | vnode->get_constructor (); | |
87 | tree value_tree = DECL_INITIAL (vnode->decl); | |
88 | if (flag_lto_print_value && value_tree) | |
89 | print_generic_expr (stdout, value_tree, TDF_NONE); | |
90 | printf ("\n"); | |
91 | } | |
92 | }; | |
93 | ||
94 | /* Stores function specific details of symbols for dumping symbol list. */ | |
95 | ||
96 | struct function_entry: public symbol_entry | |
97 | { | |
98 | function_entry (cgraph_node *node_): symbol_entry (node_) | |
99 | {} | |
100 | ||
101 | virtual void dump () | |
102 | { | |
103 | symbol_entry :: dump (); | |
104 | printf ("\n"); | |
105 | } | |
106 | ||
107 | virtual size_t get_size () const | |
108 | { | |
109 | cgraph_node *cnode = dyn_cast<cgraph_node *> (node); | |
110 | gcc_assert (cnode); | |
111 | ||
112 | return (cnode->definition) | |
113 | ? n_basic_blocks_for_fn (DECL_STRUCT_FUNCTION (cnode->decl)) | |
114 | : 0; | |
115 | } | |
116 | }; | |
117 | ||
118 | /* Comparing symbols based on size. */ | |
119 | ||
120 | int size_compare (const void *a, const void *b) | |
121 | { | |
122 | const symbol_entry *e1 = *(const symbol_entry * const*) a; | |
123 | const symbol_entry *e2 = *(const symbol_entry * const*) b; | |
124 | ||
125 | return e1->get_size () - e2->get_size (); | |
126 | } | |
127 | ||
128 | /* Comparing symbols based on name. */ | |
129 | ||
130 | int name_compare (const void *a, const void *b) | |
131 | { | |
132 | const symbol_entry *e1 = *(const symbol_entry * const*) a; | |
133 | const symbol_entry *e2 = *(const symbol_entry * const*) b; | |
134 | ||
135 | return strcmp (e1->get_name (), e2->get_name ()); | |
136 | } | |
137 | ||
138 | /* Dump list of functions and their details. */ | |
139 | ||
140 | void dump_list_functions (void) | |
141 | { | |
142 | auto_vec<symbol_entry *> v; | |
143 | ||
144 | cgraph_node *cnode; | |
145 | FOR_EACH_FUNCTION (cnode) | |
146 | { | |
147 | if (cnode->definition) | |
148 | cnode->get_untransformed_body (); | |
149 | symbol_entry *e = new function_entry (cnode); | |
150 | if (!flag_lto_dump_defined || cnode->definition) | |
151 | v.safe_push (e); | |
152 | } | |
153 | ||
154 | if (flag_lto_size_sort) | |
155 | v.qsort (size_compare); | |
156 | else if (flag_lto_name_sort) | |
157 | v.qsort (name_compare); | |
158 | if (flag_lto_reverse_sort) | |
159 | v.reverse (); | |
160 | ||
161 | printf ("Type Visibility Size Name"); | |
162 | if (flag_lto_print_value) | |
163 | printf (" Value"); | |
164 | printf ("\n"); | |
165 | int i=0; | |
166 | symbol_entry* e; | |
167 | FOR_EACH_VEC_ELT (v, i, e) | |
168 | e->dump (); | |
169 | } | |
170 | ||
171 | /* Dump list of variables and their details. */ | |
172 | ||
173 | void dump_list_variables (void) | |
174 | { | |
175 | auto_vec<symbol_entry *> v; | |
176 | ||
177 | varpool_node *vnode; | |
178 | FOR_EACH_VARIABLE (vnode) | |
179 | { | |
180 | symbol_entry *e = new variable_entry (vnode); | |
181 | if (!flag_lto_dump_defined || vnode->definition) | |
182 | v.safe_push (e); | |
183 | } | |
184 | ||
185 | if (flag_lto_size_sort) | |
186 | v.qsort (size_compare); | |
187 | else if (flag_lto_name_sort) | |
188 | v.qsort (name_compare); | |
189 | if (flag_lto_reverse_sort) | |
190 | v.reverse (); | |
191 | ||
192 | printf ("\n"); | |
193 | int i=0; | |
194 | symbol_entry* e; | |
195 | FOR_EACH_VEC_ELT (v, i, e) | |
196 | e->dump (); | |
197 | } | |
198 | ||
199 | /* Dump symbol list. */ | |
200 | ||
201 | void dump_list (void) | |
202 | { | |
203 | dump_list_functions (); | |
204 | dump_list_variables (); | |
205 | return; | |
206 | } | |
207 | ||
208 | /* Dump specific variables and functions used in IL. */ | |
209 | void dump_symbol () | |
210 | { | |
211 | symtab_node *node; | |
212 | printf ("Symbol: %s\n", flag_lto_dump_symbol); | |
213 | FOR_EACH_SYMBOL (node) | |
214 | { | |
215 | if (!strcmp (flag_lto_dump_symbol, node->name ())) | |
216 | { | |
217 | node->debug (); | |
218 | printf ("\n"); | |
219 | } | |
220 | } | |
221 | return; | |
222 | } | |
223 | ||
224 | /* Dump specific gimple body of specified function. */ | |
225 | void dump_body () | |
226 | { | |
227 | int flag = 0; | |
228 | dump_flags_t flags = TDF_NONE; | |
229 | if (flag_dump_level) | |
230 | flags = parse_dump_option (flag_dump_level, NULL); | |
231 | if (flags == TDF_ERROR) | |
232 | { | |
233 | error_at (input_location, "Level not found, use none, slim, blocks, vops."); | |
234 | return; | |
235 | } | |
236 | cgraph_node *cnode; | |
237 | FOR_EACH_FUNCTION (cnode) | |
238 | if (cnode->definition && !strcmp (cnode->name (), flag_dump_body)) | |
239 | { | |
240 | printf ("Gimple Body of Function: %s\n", cnode->name ()); | |
241 | cnode->get_untransformed_body (); | |
242 | debug_function (cnode->decl, flags); | |
243 | flag = 1; | |
244 | } | |
245 | if (!flag) | |
246 | error_at (input_location, "Function not found."); | |
247 | return; | |
248 | } | |
249 | ||
250 | /* List of command line options for dumping. */ | |
251 | void dump_tool_help () | |
252 | { | |
253 | printf ("Usage: lto-dump [OPTION]... SUB_COMMAND [OPTION]...\n\n"); | |
254 | printf ("LTO dump tool command line options.\n\n"); | |
255 | printf (" -list [options] Dump the symbol list.\n"); | |
256 | printf (" -demangle Dump the demangled output.\n"); | |
257 | printf (" -defined-only Dump only the defined symbols.\n"); | |
258 | printf (" -print-value Dump initial values of the " | |
259 | "variables.\n"); | |
260 | printf (" -name-sort Sort the symbols alphabetically.\n"); | |
261 | printf (" -size-sort Sort the symbols according to size.\n"); | |
262 | printf (" -reverse-sort Dump the symbols in reverse order.\n"); | |
263 | printf (" -symbol= Dump the details of specific symbol.\n"); | |
264 | printf (" -objects Dump the details of LTO objects.\n"); | |
265 | printf (" -type-stats Dump statistics of tree types.\n"); | |
266 | printf (" -tree-stats Dump statistics of trees.\n"); | |
267 | printf (" -gimple-stats Dump statistics of gimple " | |
268 | "statements.\n"); | |
269 | printf (" -dump-body= Dump the specific gimple body.\n"); | |
270 | printf (" -dump-level= Deciding the optimization level " | |
271 | "of body.\n"); | |
272 | printf (" -help Display the dump tool help.\n"); | |
273 | return; | |
274 | } | |
275 | ||
276 | unsigned int | |
277 | lto_option_lang_mask (void) | |
278 | { | |
279 | return CL_LTODump; | |
280 | } | |
281 | ||
282 | /* Functions for dumping various details in LTO dump tool are called | |
283 | in lto_main(). The purpose of this dump tool is to analyze the LTO | |
284 | object files. */ | |
285 | ||
286 | void | |
287 | lto_main (void) | |
288 | { | |
289 | quiet_flag = true; | |
290 | if (flag_lto_dump_tool_help) | |
291 | dump_tool_help (); | |
292 | ||
293 | /* LTO is called as a front end, even though it is not a front end. | |
294 | Because it is called as a front end, TV_PHASE_PARSING and | |
295 | TV_PARSE_GLOBAL are active, and we need to turn them off while | |
296 | doing LTO. Later we turn them back on so they are active up in | |
297 | toplev.c. */ | |
298 | ||
299 | /* Initialize the LTO front end. */ | |
300 | lto_fe_init (); | |
301 | g_timer = NULL; | |
302 | /* Read all the symbols and call graph from all the files in the | |
303 | command line. */ | |
304 | read_cgraph_and_symbols (num_in_fnames, in_fnames); | |
305 | ||
306 | /* Dump symbol list. */ | |
307 | if (flag_lto_dump_list) | |
308 | dump_list (); | |
309 | else if (flag_lto_dump_symbol) | |
310 | { | |
311 | /* Dump specific variables and functions used in IL. */ | |
312 | dump_symbol (); | |
313 | } | |
314 | else if (flag_lto_gimple_stats) | |
315 | { | |
316 | /* Dump gimple statement statistics. */ | |
317 | cgraph_node *node; | |
318 | FOR_EACH_DEFINED_FUNCTION (node) | |
319 | node->get_untransformed_body (); | |
320 | if (!GATHER_STATISTICS) | |
321 | warning_at (input_location, 0, | |
322 | "Not configured with --enable-gather-detailed-mem-stats."); | |
323 | else | |
324 | dump_gimple_statistics (); | |
325 | } | |
326 | else if (flag_lto_tree_stats) | |
327 | { | |
328 | /* Dump tree statistics. */ | |
329 | if (!GATHER_STATISTICS) | |
330 | warning_at (input_location, 0, | |
331 | "Not configured with --enable-gather-detailed-mem-stats."); | |
332 | else | |
333 | { | |
334 | printf ("Tree Statistics\n"); | |
335 | dump_tree_statistics (); | |
336 | } | |
337 | } | |
338 | else if (flag_dump_body) | |
339 | { | |
340 | /* Dump specific gimple body of specified function. */ | |
341 | dump_body (); | |
342 | return; | |
343 | } | |
344 | } |