Mercurial > hg > CbC > CbC_gcc
annotate gcc/lto/lto.c @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | 04ced10e8804 |
| children | 1830386684a0 |
| rev | line source |
|---|---|
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1 /* Top-level LTO routines. |
| 131 | 2 Copyright (C) 2009-2018 Free Software Foundation, Inc. |
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3 Contributed by CodeSourcery, Inc. |
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4 |
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5 This file is part of GCC. |
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6 |
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7 GCC is free software; you can redistribute it and/or modify it under |
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8 the terms of the GNU General Public License as published by the Free |
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9 Software Foundation; either version 3, or (at your option) any later |
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10 version. |
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11 |
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12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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13 WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with GCC; see the file COPYING3. If not see |
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19 <http://www.gnu.org/licenses/>. */ |
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20 |
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21 #include "config.h" |
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22 #include "system.h" |
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23 #include "coretypes.h" |
| 111 | 24 #include "tm.h" |
| 25 #include "function.h" | |
| 26 #include "bitmap.h" | |
| 27 #include "basic-block.h" | |
| 28 #include "tree.h" | |
| 29 #include "gimple.h" | |
| 30 #include "cfghooks.h" | |
| 31 #include "alloc-pool.h" | |
| 32 #include "tree-pass.h" | |
| 33 #include "tree-streamer.h" | |
| 34 #include "cgraph.h" | |
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35 #include "opts.h" |
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36 #include "toplev.h" |
| 111 | 37 #include "stor-layout.h" |
| 38 #include "symbol-summary.h" | |
| 39 #include "tree-vrp.h" | |
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40 #include "ipa-prop.h" |
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41 #include "common.h" |
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42 #include "debug.h" |
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43 #include "lto.h" |
| 111 | 44 #include "lto-section-names.h" |
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45 #include "splay-tree.h" |
| 111 | 46 #include "lto-partition.h" |
| 47 #include "context.h" | |
| 48 #include "pass_manager.h" | |
| 49 #include "ipa-fnsummary.h" | |
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50 #include "params.h" |
| 111 | 51 #include "ipa-utils.h" |
| 52 #include "gomp-constants.h" | |
| 53 #include "lto-symtab.h" | |
| 54 #include "stringpool.h" | |
| 55 #include "fold-const.h" | |
| 56 #include "attribs.h" | |
| 131 | 57 #include "builtins.h" |
| 111 | 58 |
| 59 | |
| 60 /* Number of parallel tasks to run, -1 if we want to use GNU Make jobserver. */ | |
| 61 static int lto_parallelism; | |
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62 |
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63 static GTY(()) tree first_personality_decl; |
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64 |
| 111 | 65 static GTY(()) const unsigned char *lto_mode_identity_table; |
| 66 | |
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67 /* Returns a hash code for P. */ |
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68 |
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69 static hashval_t |
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70 hash_name (const void *p) |
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71 { |
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72 const struct lto_section_slot *ds = (const struct lto_section_slot *) p; |
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73 return (hashval_t) htab_hash_string (ds->name); |
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74 } |
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75 |
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76 |
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77 /* Returns nonzero if P1 and P2 are equal. */ |
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78 |
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79 static int |
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80 eq_name (const void *p1, const void *p2) |
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81 { |
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82 const struct lto_section_slot *s1 = |
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83 (const struct lto_section_slot *) p1; |
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84 const struct lto_section_slot *s2 = |
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85 (const struct lto_section_slot *) p2; |
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86 |
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87 return strcmp (s1->name, s2->name) == 0; |
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88 } |
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89 |
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90 /* Free lto_section_slot */ |
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91 |
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92 static void |
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93 free_with_string (void *arg) |
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94 { |
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95 struct lto_section_slot *s = (struct lto_section_slot *)arg; |
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96 |
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97 free (CONST_CAST (char *, s->name)); |
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98 free (arg); |
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99 } |
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100 |
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101 /* Create section hash table */ |
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102 |
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103 htab_t |
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104 lto_obj_create_section_hash_table (void) |
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105 { |
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106 return htab_create (37, hash_name, eq_name, free_with_string); |
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107 } |
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108 |
| 111 | 109 /* Delete an allocated integer KEY in the splay tree. */ |
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110 |
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111 static void |
| 111 | 112 lto_splay_tree_delete_id (splay_tree_key key) |
| 113 { | |
| 114 free ((void *) key); | |
| 115 } | |
| 116 | |
| 117 /* Compare splay tree node ids A and B. */ | |
| 118 | |
| 119 static int | |
| 120 lto_splay_tree_compare_ids (splay_tree_key a, splay_tree_key b) | |
| 121 { | |
| 122 unsigned HOST_WIDE_INT ai; | |
| 123 unsigned HOST_WIDE_INT bi; | |
| 124 | |
| 125 ai = *(unsigned HOST_WIDE_INT *) a; | |
| 126 bi = *(unsigned HOST_WIDE_INT *) b; | |
| 127 | |
| 128 if (ai < bi) | |
| 129 return -1; | |
| 130 else if (ai > bi) | |
| 131 return 1; | |
| 132 return 0; | |
| 133 } | |
| 134 | |
| 135 /* Look up splay tree node by ID in splay tree T. */ | |
| 136 | |
| 137 static splay_tree_node | |
| 138 lto_splay_tree_lookup (splay_tree t, unsigned HOST_WIDE_INT id) | |
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139 { |
| 111 | 140 return splay_tree_lookup (t, (splay_tree_key) &id); |
| 141 } | |
| 142 | |
| 143 /* Check if KEY has ID. */ | |
| 144 | |
| 145 static bool | |
| 146 lto_splay_tree_id_equal_p (splay_tree_key key, unsigned HOST_WIDE_INT id) | |
| 147 { | |
| 148 return *(unsigned HOST_WIDE_INT *) key == id; | |
| 149 } | |
| 150 | |
| 151 /* Insert a splay tree node into tree T with ID as key and FILE_DATA as value. | |
| 152 The ID is allocated separately because we need HOST_WIDE_INTs which may | |
| 153 be wider than a splay_tree_key. */ | |
| 154 | |
| 155 static void | |
| 156 lto_splay_tree_insert (splay_tree t, unsigned HOST_WIDE_INT id, | |
| 157 struct lto_file_decl_data *file_data) | |
| 158 { | |
| 159 unsigned HOST_WIDE_INT *idp = XCNEW (unsigned HOST_WIDE_INT); | |
| 160 *idp = id; | |
| 161 splay_tree_insert (t, (splay_tree_key) idp, (splay_tree_value) file_data); | |
| 162 } | |
| 163 | |
| 164 /* Create a splay tree. */ | |
| 165 | |
| 166 static splay_tree | |
| 167 lto_splay_tree_new (void) | |
| 168 { | |
| 169 return splay_tree_new (lto_splay_tree_compare_ids, | |
| 170 lto_splay_tree_delete_id, | |
| 171 NULL); | |
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172 } |
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173 |
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174 /* Return true when NODE has a clone that is analyzed (i.e. we need |
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175 to load its body even if the node itself is not needed). */ |
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176 |
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177 static bool |
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178 has_analyzed_clone_p (struct cgraph_node *node) |
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179 { |
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180 struct cgraph_node *orig = node; |
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181 node = node->clones; |
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182 if (node) |
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183 while (node != orig) |
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184 { |
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185 if (node->analyzed) |
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186 return true; |
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187 if (node->clones) |
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188 node = node->clones; |
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189 else if (node->next_sibling_clone) |
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190 node = node->next_sibling_clone; |
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191 else |
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192 { |
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193 while (node != orig && !node->next_sibling_clone) |
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194 node = node->clone_of; |
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195 if (node != orig) |
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196 node = node->next_sibling_clone; |
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197 } |
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198 } |
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199 return false; |
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200 } |
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201 |
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202 /* Read the function body for the function associated with NODE. */ |
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203 |
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204 static void |
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205 lto_materialize_function (struct cgraph_node *node) |
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206 { |
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207 tree decl; |
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208 |
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209 decl = node->decl; |
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210 /* Read in functions with body (analyzed nodes) |
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211 and also functions that are needed to produce virtual clones. */ |
| 111 | 212 if ((node->has_gimple_body_p () && node->analyzed) |
| 213 || node->used_as_abstract_origin | |
| 214 || has_analyzed_clone_p (node)) | |
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215 { |
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216 /* Clones don't need to be read. */ |
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217 if (node->clone_of) |
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218 return; |
| 111 | 219 if (DECL_FUNCTION_PERSONALITY (decl) && !first_personality_decl) |
| 220 first_personality_decl = DECL_FUNCTION_PERSONALITY (decl); | |
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221 } |
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222 |
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223 /* Let the middle end know about the function. */ |
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224 rest_of_decl_compilation (decl, 1, 0); |
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225 } |
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226 |
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227 |
| 111 | 228 /* Decode the content of memory pointed to by DATA in the in decl |
| 229 state object STATE. DATA_IN points to a data_in structure for | |
| 230 decoding. Return the address after the decoded object in the | |
| 231 input. */ | |
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232 |
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233 static const uint32_t * |
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234 lto_read_in_decl_state (struct data_in *data_in, const uint32_t *data, |
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235 struct lto_in_decl_state *state) |
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236 { |
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237 uint32_t ix; |
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238 tree decl; |
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239 uint32_t i, j; |
| 111 | 240 |
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241 ix = *data++; |
| 111 | 242 state->compressed = ix & 1; |
| 243 ix /= 2; | |
| 244 decl = streamer_tree_cache_get_tree (data_in->reader_cache, ix); | |
| 245 if (!VAR_OR_FUNCTION_DECL_P (decl)) | |
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246 { |
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247 gcc_assert (decl == void_type_node); |
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248 decl = NULL_TREE; |
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249 } |
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250 state->fn_decl = decl; |
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251 |
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252 for (i = 0; i < LTO_N_DECL_STREAMS; i++) |
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253 { |
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254 uint32_t size = *data++; |
| 111 | 255 vec<tree, va_gc> *decls = NULL; |
| 256 vec_alloc (decls, size); | |
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257 |
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258 for (j = 0; j < size; j++) |
| 111 | 259 vec_safe_push (decls, |
| 260 streamer_tree_cache_get_tree (data_in->reader_cache, | |
| 261 data[j])); | |
| 262 | |
| 263 state->streams[i] = decls; | |
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264 data += size; |
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265 } |
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266 |
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267 return data; |
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268 } |
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269 |
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270 |
| 111 | 271 /* Global canonical type table. */ |
| 272 static htab_t gimple_canonical_types; | |
| 273 static hash_map<const_tree, hashval_t> *canonical_type_hash_cache; | |
| 274 static unsigned long num_canonical_type_hash_entries; | |
| 275 static unsigned long num_canonical_type_hash_queries; | |
| 276 | |
| 277 static void iterative_hash_canonical_type (tree type, inchash::hash &hstate); | |
| 278 static hashval_t gimple_canonical_type_hash (const void *p); | |
| 279 static void gimple_register_canonical_type_1 (tree t, hashval_t hash); | |
| 280 | |
| 281 /* Returning a hash value for gimple type TYPE. | |
| 282 | |
| 283 The hash value returned is equal for types considered compatible | |
| 284 by gimple_canonical_types_compatible_p. */ | |
| 285 | |
| 286 static hashval_t | |
| 287 hash_canonical_type (tree type) | |
| 288 { | |
| 289 inchash::hash hstate; | |
| 290 enum tree_code code; | |
| 291 | |
| 292 /* We compute alias sets only for types that needs them. | |
| 293 Be sure we do not recurse to something else as we can not hash incomplete | |
| 294 types in a way they would have same hash value as compatible complete | |
| 295 types. */ | |
| 296 gcc_checking_assert (type_with_alias_set_p (type)); | |
| 297 | |
| 298 /* Combine a few common features of types so that types are grouped into | |
| 299 smaller sets; when searching for existing matching types to merge, | |
| 300 only existing types having the same features as the new type will be | |
| 301 checked. */ | |
| 302 code = tree_code_for_canonical_type_merging (TREE_CODE (type)); | |
| 303 hstate.add_int (code); | |
| 304 hstate.add_int (TYPE_MODE (type)); | |
| 305 | |
| 306 /* Incorporate common features of numerical types. */ | |
| 307 if (INTEGRAL_TYPE_P (type) | |
| 308 || SCALAR_FLOAT_TYPE_P (type) | |
| 309 || FIXED_POINT_TYPE_P (type) | |
| 310 || TREE_CODE (type) == OFFSET_TYPE | |
| 311 || POINTER_TYPE_P (type)) | |
| 312 { | |
| 313 hstate.add_int (TYPE_PRECISION (type)); | |
| 314 if (!type_with_interoperable_signedness (type)) | |
| 315 hstate.add_int (TYPE_UNSIGNED (type)); | |
| 316 } | |
| 317 | |
| 318 if (VECTOR_TYPE_P (type)) | |
| 319 { | |
| 131 | 320 hstate.add_poly_int (TYPE_VECTOR_SUBPARTS (type)); |
| 111 | 321 hstate.add_int (TYPE_UNSIGNED (type)); |
| 322 } | |
| 323 | |
| 324 if (TREE_CODE (type) == COMPLEX_TYPE) | |
| 325 hstate.add_int (TYPE_UNSIGNED (type)); | |
| 326 | |
| 327 /* Fortran's C_SIGNED_CHAR is !TYPE_STRING_FLAG but needs to be | |
| 328 interoperable with "signed char". Unless all frontends are revisited to | |
| 329 agree on these types, we must ignore the flag completely. */ | |
| 330 | |
| 331 /* Fortran standard define C_PTR type that is compatible with every | |
| 332 C pointer. For this reason we need to glob all pointers into one. | |
| 333 Still pointers in different address spaces are not compatible. */ | |
| 334 if (POINTER_TYPE_P (type)) | |
| 335 hstate.add_int (TYPE_ADDR_SPACE (TREE_TYPE (type))); | |
| 336 | |
| 337 /* For array types hash the domain bounds and the string flag. */ | |
| 338 if (TREE_CODE (type) == ARRAY_TYPE && TYPE_DOMAIN (type)) | |
| 339 { | |
| 340 hstate.add_int (TYPE_STRING_FLAG (type)); | |
| 341 /* OMP lowering can introduce error_mark_node in place of | |
| 342 random local decls in types. */ | |
| 343 if (TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != error_mark_node) | |
| 344 inchash::add_expr (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), hstate); | |
| 345 if (TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != error_mark_node) | |
| 346 inchash::add_expr (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), hstate); | |
| 347 } | |
| 348 | |
| 349 /* Recurse for aggregates with a single element type. */ | |
| 350 if (TREE_CODE (type) == ARRAY_TYPE | |
| 351 || TREE_CODE (type) == COMPLEX_TYPE | |
| 352 || TREE_CODE (type) == VECTOR_TYPE) | |
| 353 iterative_hash_canonical_type (TREE_TYPE (type), hstate); | |
| 354 | |
| 355 /* Incorporate function return and argument types. */ | |
| 356 if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
| 357 { | |
| 358 unsigned na; | |
| 359 tree p; | |
| 360 | |
| 361 iterative_hash_canonical_type (TREE_TYPE (type), hstate); | |
| 362 | |
| 363 for (p = TYPE_ARG_TYPES (type), na = 0; p; p = TREE_CHAIN (p)) | |
| 364 { | |
| 365 iterative_hash_canonical_type (TREE_VALUE (p), hstate); | |
| 366 na++; | |
| 367 } | |
| 368 | |
| 369 hstate.add_int (na); | |
| 370 } | |
| 371 | |
| 372 if (RECORD_OR_UNION_TYPE_P (type)) | |
| 373 { | |
| 374 unsigned nf; | |
| 375 tree f; | |
| 376 | |
| 377 for (f = TYPE_FIELDS (type), nf = 0; f; f = TREE_CHAIN (f)) | |
| 378 if (TREE_CODE (f) == FIELD_DECL | |
| 379 && (! DECL_SIZE (f) | |
| 380 || ! integer_zerop (DECL_SIZE (f)))) | |
| 381 { | |
| 382 iterative_hash_canonical_type (TREE_TYPE (f), hstate); | |
| 383 nf++; | |
| 384 } | |
| 385 | |
| 386 hstate.add_int (nf); | |
| 387 } | |
| 388 | |
| 389 return hstate.end(); | |
| 390 } | |
| 391 | |
| 392 /* Returning a hash value for gimple type TYPE combined with VAL. */ | |
| 393 | |
| 394 static void | |
| 395 iterative_hash_canonical_type (tree type, inchash::hash &hstate) | |
| 396 { | |
| 397 hashval_t v; | |
| 398 | |
| 399 /* All type variants have same TYPE_CANONICAL. */ | |
| 400 type = TYPE_MAIN_VARIANT (type); | |
| 401 | |
| 402 if (!canonical_type_used_p (type)) | |
| 403 v = hash_canonical_type (type); | |
| 404 /* An already processed type. */ | |
| 405 else if (TYPE_CANONICAL (type)) | |
| 406 { | |
| 407 type = TYPE_CANONICAL (type); | |
| 408 v = gimple_canonical_type_hash (type); | |
| 409 } | |
| 410 else | |
| 411 { | |
| 412 /* Canonical types should not be able to form SCCs by design, this | |
| 413 recursion is just because we do not register canonical types in | |
| 414 optimal order. To avoid quadratic behavior also register the | |
| 415 type here. */ | |
| 416 v = hash_canonical_type (type); | |
| 417 gimple_register_canonical_type_1 (type, v); | |
| 418 } | |
| 419 hstate.add_int (v); | |
| 420 } | |
| 421 | |
| 422 /* Returns the hash for a canonical type P. */ | |
| 423 | |
| 424 static hashval_t | |
| 425 gimple_canonical_type_hash (const void *p) | |
| 426 { | |
| 427 num_canonical_type_hash_queries++; | |
| 428 hashval_t *slot = canonical_type_hash_cache->get ((const_tree) p); | |
| 429 gcc_assert (slot != NULL); | |
| 430 return *slot; | |
| 431 } | |
| 432 | |
| 433 | |
| 434 | |
| 435 /* Returns nonzero if P1 and P2 are equal. */ | |
| 436 | |
| 437 static int | |
| 438 gimple_canonical_type_eq (const void *p1, const void *p2) | |
| 439 { | |
| 440 const_tree t1 = (const_tree) p1; | |
| 441 const_tree t2 = (const_tree) p2; | |
| 442 return gimple_canonical_types_compatible_p (CONST_CAST_TREE (t1), | |
| 443 CONST_CAST_TREE (t2)); | |
| 444 } | |
| 445 | |
| 446 /* Main worker for gimple_register_canonical_type. */ | |
| 447 | |
| 448 static void | |
| 449 gimple_register_canonical_type_1 (tree t, hashval_t hash) | |
| 450 { | |
| 451 void **slot; | |
| 452 | |
| 453 gcc_checking_assert (TYPE_P (t) && !TYPE_CANONICAL (t) | |
| 454 && type_with_alias_set_p (t) | |
| 455 && canonical_type_used_p (t)); | |
| 456 | |
| 457 slot = htab_find_slot_with_hash (gimple_canonical_types, t, hash, INSERT); | |
| 458 if (*slot) | |
| 459 { | |
| 460 tree new_type = (tree)(*slot); | |
| 461 gcc_checking_assert (new_type != t); | |
| 462 TYPE_CANONICAL (t) = new_type; | |
| 463 } | |
| 464 else | |
| 465 { | |
| 466 TYPE_CANONICAL (t) = t; | |
| 467 *slot = (void *) t; | |
| 468 /* Cache the just computed hash value. */ | |
| 469 num_canonical_type_hash_entries++; | |
| 470 bool existed_p = canonical_type_hash_cache->put (t, hash); | |
| 471 gcc_assert (!existed_p); | |
| 472 } | |
| 473 } | |
| 474 | |
| 475 /* Register type T in the global type table gimple_types and set | |
| 476 TYPE_CANONICAL of T accordingly. | |
| 477 This is used by LTO to merge structurally equivalent types for | |
| 478 type-based aliasing purposes across different TUs and languages. | |
| 479 | |
| 480 ??? This merging does not exactly match how the tree.c middle-end | |
| 481 functions will assign TYPE_CANONICAL when new types are created | |
| 482 during optimization (which at least happens for pointer and array | |
| 483 types). */ | |
| 484 | |
| 485 static void | |
| 486 gimple_register_canonical_type (tree t) | |
| 487 { | |
| 488 if (TYPE_CANONICAL (t) || !type_with_alias_set_p (t) | |
| 489 || !canonical_type_used_p (t)) | |
| 490 return; | |
| 491 | |
| 492 /* Canonical types are same among all complete variants. */ | |
| 493 if (TYPE_CANONICAL (TYPE_MAIN_VARIANT (t))) | |
| 494 TYPE_CANONICAL (t) = TYPE_CANONICAL (TYPE_MAIN_VARIANT (t)); | |
| 495 else | |
| 496 { | |
| 497 gimple_register_canonical_type_1 (TYPE_MAIN_VARIANT (t), | |
| 498 hash_canonical_type (TYPE_MAIN_VARIANT (t))); | |
| 499 TYPE_CANONICAL (t) = TYPE_CANONICAL (TYPE_MAIN_VARIANT (t)); | |
| 500 } | |
| 501 } | |
| 502 | |
| 503 /* Re-compute TYPE_CANONICAL for NODE and related types. */ | |
| 504 | |
| 505 static void | |
| 506 lto_register_canonical_types (tree node, bool first_p) | |
| 507 { | |
| 508 if (!node | |
| 509 || !TYPE_P (node)) | |
| 510 return; | |
| 511 | |
| 512 if (first_p) | |
| 513 TYPE_CANONICAL (node) = NULL_TREE; | |
| 514 | |
| 515 if (POINTER_TYPE_P (node) | |
| 516 || TREE_CODE (node) == COMPLEX_TYPE | |
| 517 || TREE_CODE (node) == ARRAY_TYPE) | |
| 518 lto_register_canonical_types (TREE_TYPE (node), first_p); | |
| 519 | |
| 520 if (!first_p) | |
| 521 gimple_register_canonical_type (node); | |
| 522 } | |
| 523 | |
| 524 | |
| 525 /* Remember trees that contains references to declarations. */ | |
| 526 static GTY(()) vec <tree, va_gc> *tree_with_vars; | |
| 527 | |
| 528 #define CHECK_VAR(tt) \ | |
| 529 do \ | |
| 530 { \ | |
| 531 if ((tt) && VAR_OR_FUNCTION_DECL_P (tt) \ | |
| 532 && (TREE_PUBLIC (tt) || DECL_EXTERNAL (tt))) \ | |
| 533 return true; \ | |
| 534 } while (0) | |
| 535 | |
| 536 #define CHECK_NO_VAR(tt) \ | |
| 537 gcc_checking_assert (!(tt) || !VAR_OR_FUNCTION_DECL_P (tt)) | |
| 538 | |
| 539 /* Check presence of pointers to decls in fields of a tree_typed T. */ | |
| 540 | |
| 541 static inline bool | |
| 542 mentions_vars_p_typed (tree t) | |
| 543 { | |
| 544 CHECK_NO_VAR (TREE_TYPE (t)); | |
| 545 return false; | |
| 546 } | |
| 547 | |
| 548 /* Check presence of pointers to decls in fields of a tree_common T. */ | |
| 549 | |
| 550 static inline bool | |
| 551 mentions_vars_p_common (tree t) | |
| 552 { | |
| 553 if (mentions_vars_p_typed (t)) | |
| 554 return true; | |
| 555 CHECK_NO_VAR (TREE_CHAIN (t)); | |
| 556 return false; | |
| 557 } | |
| 558 | |
| 559 /* Check presence of pointers to decls in fields of a decl_minimal T. */ | |
| 560 | |
| 561 static inline bool | |
| 562 mentions_vars_p_decl_minimal (tree t) | |
| 563 { | |
| 564 if (mentions_vars_p_common (t)) | |
| 565 return true; | |
| 566 CHECK_NO_VAR (DECL_NAME (t)); | |
| 567 CHECK_VAR (DECL_CONTEXT (t)); | |
| 568 return false; | |
| 569 } | |
| 570 | |
| 571 /* Check presence of pointers to decls in fields of a decl_common T. */ | |
| 572 | |
| 573 static inline bool | |
| 574 mentions_vars_p_decl_common (tree t) | |
| 575 { | |
| 576 if (mentions_vars_p_decl_minimal (t)) | |
| 577 return true; | |
| 578 CHECK_VAR (DECL_SIZE (t)); | |
| 579 CHECK_VAR (DECL_SIZE_UNIT (t)); | |
| 580 CHECK_VAR (DECL_INITIAL (t)); | |
| 581 CHECK_NO_VAR (DECL_ATTRIBUTES (t)); | |
| 582 CHECK_VAR (DECL_ABSTRACT_ORIGIN (t)); | |
| 583 return false; | |
| 584 } | |
| 585 | |
| 586 /* Check presence of pointers to decls in fields of a decl_with_vis T. */ | |
| 587 | |
| 588 static inline bool | |
| 589 mentions_vars_p_decl_with_vis (tree t) | |
| 590 { | |
| 591 if (mentions_vars_p_decl_common (t)) | |
| 592 return true; | |
| 593 | |
| 594 /* Accessor macro has side-effects, use field-name here. */ | |
| 595 CHECK_NO_VAR (DECL_ASSEMBLER_NAME_RAW (t)); | |
| 596 return false; | |
| 597 } | |
| 598 | |
| 599 /* Check presence of pointers to decls in fields of a decl_non_common T. */ | |
| 600 | |
| 601 static inline bool | |
| 602 mentions_vars_p_decl_non_common (tree t) | |
| 603 { | |
| 604 if (mentions_vars_p_decl_with_vis (t)) | |
| 605 return true; | |
| 606 CHECK_NO_VAR (DECL_RESULT_FLD (t)); | |
| 607 return false; | |
| 608 } | |
| 609 | |
| 610 /* Check presence of pointers to decls in fields of a decl_non_common T. */ | |
| 611 | |
| 612 static bool | |
| 613 mentions_vars_p_function (tree t) | |
| 614 { | |
| 615 if (mentions_vars_p_decl_non_common (t)) | |
| 616 return true; | |
| 617 CHECK_NO_VAR (DECL_ARGUMENTS (t)); | |
| 618 CHECK_NO_VAR (DECL_VINDEX (t)); | |
| 619 CHECK_VAR (DECL_FUNCTION_PERSONALITY (t)); | |
| 620 return false; | |
| 621 } | |
| 622 | |
| 623 /* Check presence of pointers to decls in fields of a field_decl T. */ | |
| 624 | |
| 625 static bool | |
| 626 mentions_vars_p_field_decl (tree t) | |
| 627 { | |
| 628 if (mentions_vars_p_decl_common (t)) | |
| 629 return true; | |
| 630 CHECK_VAR (DECL_FIELD_OFFSET (t)); | |
| 631 CHECK_NO_VAR (DECL_BIT_FIELD_TYPE (t)); | |
| 632 CHECK_NO_VAR (DECL_QUALIFIER (t)); | |
| 633 CHECK_NO_VAR (DECL_FIELD_BIT_OFFSET (t)); | |
| 634 CHECK_NO_VAR (DECL_FCONTEXT (t)); | |
| 635 return false; | |
| 636 } | |
| 637 | |
| 638 /* Check presence of pointers to decls in fields of a type T. */ | |
| 639 | |
| 640 static bool | |
| 641 mentions_vars_p_type (tree t) | |
| 642 { | |
| 643 if (mentions_vars_p_common (t)) | |
| 644 return true; | |
| 645 CHECK_NO_VAR (TYPE_CACHED_VALUES (t)); | |
| 646 CHECK_VAR (TYPE_SIZE (t)); | |
| 647 CHECK_VAR (TYPE_SIZE_UNIT (t)); | |
| 648 CHECK_NO_VAR (TYPE_ATTRIBUTES (t)); | |
| 649 CHECK_NO_VAR (TYPE_NAME (t)); | |
| 650 | |
| 651 CHECK_VAR (TYPE_MIN_VALUE_RAW (t)); | |
| 652 CHECK_VAR (TYPE_MAX_VALUE_RAW (t)); | |
| 653 | |
| 654 /* Accessor is for derived node types only. */ | |
| 655 CHECK_NO_VAR (TYPE_LANG_SLOT_1 (t)); | |
| 656 | |
| 657 CHECK_VAR (TYPE_CONTEXT (t)); | |
| 658 CHECK_NO_VAR (TYPE_CANONICAL (t)); | |
| 659 CHECK_NO_VAR (TYPE_MAIN_VARIANT (t)); | |
| 660 CHECK_NO_VAR (TYPE_NEXT_VARIANT (t)); | |
| 661 return false; | |
| 662 } | |
| 663 | |
| 664 /* Check presence of pointers to decls in fields of a BINFO T. */ | |
| 665 | |
| 666 static bool | |
| 667 mentions_vars_p_binfo (tree t) | |
| 668 { | |
| 669 unsigned HOST_WIDE_INT i, n; | |
| 670 | |
| 671 if (mentions_vars_p_common (t)) | |
| 672 return true; | |
| 673 CHECK_VAR (BINFO_VTABLE (t)); | |
| 674 CHECK_NO_VAR (BINFO_OFFSET (t)); | |
| 675 CHECK_NO_VAR (BINFO_VIRTUALS (t)); | |
| 676 CHECK_NO_VAR (BINFO_VPTR_FIELD (t)); | |
| 677 n = vec_safe_length (BINFO_BASE_ACCESSES (t)); | |
| 678 for (i = 0; i < n; i++) | |
| 679 CHECK_NO_VAR (BINFO_BASE_ACCESS (t, i)); | |
| 680 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX | |
| 681 and BINFO_VPTR_INDEX; these are used by C++ FE only. */ | |
| 682 n = BINFO_N_BASE_BINFOS (t); | |
| 683 for (i = 0; i < n; i++) | |
| 684 CHECK_NO_VAR (BINFO_BASE_BINFO (t, i)); | |
| 685 return false; | |
| 686 } | |
| 687 | |
| 688 /* Check presence of pointers to decls in fields of a CONSTRUCTOR T. */ | |
| 689 | |
| 690 static bool | |
| 691 mentions_vars_p_constructor (tree t) | |
| 692 { | |
| 693 unsigned HOST_WIDE_INT idx; | |
| 694 constructor_elt *ce; | |
| 695 | |
| 696 if (mentions_vars_p_typed (t)) | |
| 697 return true; | |
| 698 | |
| 699 for (idx = 0; vec_safe_iterate (CONSTRUCTOR_ELTS (t), idx, &ce); idx++) | |
| 700 { | |
| 701 CHECK_NO_VAR (ce->index); | |
| 702 CHECK_VAR (ce->value); | |
| 703 } | |
| 704 return false; | |
| 705 } | |
| 706 | |
| 707 /* Check presence of pointers to decls in fields of an expression tree T. */ | |
| 708 | |
| 709 static bool | |
| 710 mentions_vars_p_expr (tree t) | |
| 711 { | |
| 712 int i; | |
| 713 if (mentions_vars_p_typed (t)) | |
| 714 return true; | |
| 715 for (i = TREE_OPERAND_LENGTH (t) - 1; i >= 0; --i) | |
| 716 CHECK_VAR (TREE_OPERAND (t, i)); | |
| 717 return false; | |
| 718 } | |
| 719 | |
| 720 /* Check presence of pointers to decls in fields of an OMP_CLAUSE T. */ | |
| 721 | |
| 722 static bool | |
| 723 mentions_vars_p_omp_clause (tree t) | |
| 724 { | |
| 725 int i; | |
| 726 if (mentions_vars_p_common (t)) | |
| 727 return true; | |
| 728 for (i = omp_clause_num_ops[OMP_CLAUSE_CODE (t)] - 1; i >= 0; --i) | |
| 729 CHECK_VAR (OMP_CLAUSE_OPERAND (t, i)); | |
| 730 return false; | |
| 731 } | |
| 732 | |
| 733 /* Check presence of pointers to decls that needs later fixup in T. */ | |
| 734 | |
| 735 static bool | |
| 736 mentions_vars_p (tree t) | |
| 737 { | |
| 738 switch (TREE_CODE (t)) | |
| 739 { | |
| 740 case IDENTIFIER_NODE: | |
| 741 break; | |
| 742 | |
| 743 case TREE_LIST: | |
| 744 CHECK_VAR (TREE_VALUE (t)); | |
| 745 CHECK_VAR (TREE_PURPOSE (t)); | |
| 746 CHECK_NO_VAR (TREE_CHAIN (t)); | |
| 747 break; | |
| 748 | |
| 749 case FIELD_DECL: | |
| 750 return mentions_vars_p_field_decl (t); | |
| 751 | |
| 752 case LABEL_DECL: | |
| 753 case CONST_DECL: | |
| 754 case PARM_DECL: | |
| 755 case RESULT_DECL: | |
| 756 case IMPORTED_DECL: | |
| 757 case NAMESPACE_DECL: | |
| 758 case NAMELIST_DECL: | |
| 759 return mentions_vars_p_decl_common (t); | |
| 760 | |
| 761 case VAR_DECL: | |
| 762 return mentions_vars_p_decl_with_vis (t); | |
| 763 | |
| 764 case TYPE_DECL: | |
| 765 return mentions_vars_p_decl_non_common (t); | |
| 766 | |
| 767 case FUNCTION_DECL: | |
| 768 return mentions_vars_p_function (t); | |
| 769 | |
| 770 case TREE_BINFO: | |
| 771 return mentions_vars_p_binfo (t); | |
| 772 | |
| 773 case PLACEHOLDER_EXPR: | |
| 774 return mentions_vars_p_common (t); | |
| 775 | |
| 776 case BLOCK: | |
| 777 case TRANSLATION_UNIT_DECL: | |
| 778 case OPTIMIZATION_NODE: | |
| 779 case TARGET_OPTION_NODE: | |
| 780 break; | |
| 781 | |
| 782 case CONSTRUCTOR: | |
| 783 return mentions_vars_p_constructor (t); | |
| 784 | |
| 785 case OMP_CLAUSE: | |
| 786 return mentions_vars_p_omp_clause (t); | |
| 787 | |
| 788 default: | |
| 789 if (TYPE_P (t)) | |
| 790 { | |
| 791 if (mentions_vars_p_type (t)) | |
| 792 return true; | |
| 793 } | |
| 794 else if (EXPR_P (t)) | |
| 795 { | |
| 796 if (mentions_vars_p_expr (t)) | |
| 797 return true; | |
| 798 } | |
| 799 else if (CONSTANT_CLASS_P (t)) | |
| 800 CHECK_NO_VAR (TREE_TYPE (t)); | |
| 801 else | |
| 802 gcc_unreachable (); | |
| 803 } | |
| 804 return false; | |
| 805 } | |
| 806 | |
| 807 | |
| 808 /* Return the resolution for the decl with index INDEX from DATA_IN. */ | |
| 809 | |
| 810 static enum ld_plugin_symbol_resolution | |
| 811 get_resolution (struct data_in *data_in, unsigned index) | |
| 812 { | |
| 813 if (data_in->globals_resolution.exists ()) | |
| 814 { | |
| 815 ld_plugin_symbol_resolution_t ret; | |
| 816 /* We can have references to not emitted functions in | |
| 817 DECL_FUNCTION_PERSONALITY at least. So we can and have | |
| 818 to indeed return LDPR_UNKNOWN in some cases. */ | |
| 819 if (data_in->globals_resolution.length () <= index) | |
| 820 return LDPR_UNKNOWN; | |
| 821 ret = data_in->globals_resolution[index]; | |
| 822 return ret; | |
| 823 } | |
| 824 else | |
| 825 /* Delay resolution finding until decl merging. */ | |
| 826 return LDPR_UNKNOWN; | |
| 827 } | |
| 828 | |
| 829 /* We need to record resolutions until symbol table is read. */ | |
| 830 static void | |
| 831 register_resolution (struct lto_file_decl_data *file_data, tree decl, | |
| 832 enum ld_plugin_symbol_resolution resolution) | |
| 833 { | |
| 131 | 834 bool existed; |
| 111 | 835 if (resolution == LDPR_UNKNOWN) |
| 836 return; | |
| 837 if (!file_data->resolution_map) | |
| 838 file_data->resolution_map | |
| 839 = new hash_map<tree, ld_plugin_symbol_resolution>; | |
| 131 | 840 ld_plugin_symbol_resolution_t &res |
| 841 = file_data->resolution_map->get_or_insert (decl, &existed); | |
| 842 if (!existed | |
| 843 || resolution == LDPR_PREVAILING_DEF_IRONLY | |
| 844 || resolution == LDPR_PREVAILING_DEF | |
| 845 || resolution == LDPR_PREVAILING_DEF_IRONLY_EXP) | |
| 846 res = resolution; | |
| 111 | 847 } |
| 848 | |
| 849 /* Register DECL with the global symbol table and change its | |
| 850 name if necessary to avoid name clashes for static globals across | |
| 851 different files. */ | |
| 852 | |
| 853 static void | |
| 854 lto_register_var_decl_in_symtab (struct data_in *data_in, tree decl, | |
| 855 unsigned ix) | |
| 856 { | |
| 857 tree context; | |
| 858 | |
| 859 /* Variable has file scope, not local. */ | |
| 860 if (!TREE_PUBLIC (decl) | |
| 861 && !((context = decl_function_context (decl)) | |
| 862 && auto_var_in_fn_p (decl, context))) | |
| 863 rest_of_decl_compilation (decl, 1, 0); | |
| 864 | |
| 865 /* If this variable has already been declared, queue the | |
| 866 declaration for merging. */ | |
| 867 if (TREE_PUBLIC (decl)) | |
| 868 register_resolution (data_in->file_data, | |
| 869 decl, get_resolution (data_in, ix)); | |
| 870 } | |
| 871 | |
| 872 | |
| 873 /* Register DECL with the global symbol table and change its | |
| 874 name if necessary to avoid name clashes for static globals across | |
| 875 different files. DATA_IN contains descriptors and tables for the | |
| 876 file being read. */ | |
| 877 | |
| 878 static void | |
| 879 lto_register_function_decl_in_symtab (struct data_in *data_in, tree decl, | |
| 880 unsigned ix) | |
| 881 { | |
| 882 /* If this variable has already been declared, queue the | |
| 883 declaration for merging. */ | |
| 884 if (TREE_PUBLIC (decl) && !DECL_ABSTRACT_P (decl)) | |
| 885 register_resolution (data_in->file_data, | |
| 886 decl, get_resolution (data_in, ix)); | |
| 887 } | |
| 888 | |
| 131 | 889 /* Check if T is a decl and needs register its resolution info. */ |
| 890 | |
| 891 static void | |
| 892 lto_maybe_register_decl (struct data_in *data_in, tree t, unsigned ix) | |
| 893 { | |
| 894 if (TREE_CODE (t) == VAR_DECL) | |
| 895 lto_register_var_decl_in_symtab (data_in, t, ix); | |
| 896 else if (TREE_CODE (t) == FUNCTION_DECL | |
| 897 && !fndecl_built_in_p (t)) | |
| 898 lto_register_function_decl_in_symtab (data_in, t, ix); | |
| 899 } | |
| 900 | |
| 111 | 901 |
| 902 /* For the type T re-materialize it in the type variant list and | |
| 903 the pointer/reference-to chains. */ | |
| 904 | |
| 905 static void | |
| 906 lto_fixup_prevailing_type (tree t) | |
| 907 { | |
| 908 /* The following re-creates proper variant lists while fixing up | |
| 909 the variant leaders. We do not stream TYPE_NEXT_VARIANT so the | |
| 910 variant list state before fixup is broken. */ | |
| 911 | |
| 912 /* If we are not our own variant leader link us into our new leaders | |
| 913 variant list. */ | |
| 914 if (TYPE_MAIN_VARIANT (t) != t) | |
| 915 { | |
| 916 tree mv = TYPE_MAIN_VARIANT (t); | |
| 917 TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (mv); | |
| 918 TYPE_NEXT_VARIANT (mv) = t; | |
| 919 } | |
| 920 | |
| 921 /* The following reconstructs the pointer chains | |
| 922 of the new pointed-to type if we are a main variant. We do | |
| 923 not stream those so they are broken before fixup. */ | |
| 924 if (TREE_CODE (t) == POINTER_TYPE | |
| 925 && TYPE_MAIN_VARIANT (t) == t) | |
| 926 { | |
| 927 TYPE_NEXT_PTR_TO (t) = TYPE_POINTER_TO (TREE_TYPE (t)); | |
| 928 TYPE_POINTER_TO (TREE_TYPE (t)) = t; | |
| 929 } | |
| 930 else if (TREE_CODE (t) == REFERENCE_TYPE | |
| 931 && TYPE_MAIN_VARIANT (t) == t) | |
| 932 { | |
| 933 TYPE_NEXT_REF_TO (t) = TYPE_REFERENCE_TO (TREE_TYPE (t)); | |
| 934 TYPE_REFERENCE_TO (TREE_TYPE (t)) = t; | |
| 935 } | |
| 936 } | |
| 937 | |
| 938 | |
| 939 /* We keep prevailing tree SCCs in a hashtable with manual collision | |
| 940 handling (in case all hashes compare the same) and keep the colliding | |
| 941 entries in the tree_scc->next chain. */ | |
| 942 | |
| 943 struct tree_scc | |
| 944 { | |
| 945 tree_scc *next; | |
| 946 /* Hash of the whole SCC. */ | |
| 947 hashval_t hash; | |
| 948 /* Number of trees in the SCC. */ | |
| 949 unsigned len; | |
| 950 /* Number of possible entries into the SCC (tree nodes [0..entry_len-1] | |
| 951 which share the same individual tree hash). */ | |
| 952 unsigned entry_len; | |
| 953 /* The members of the SCC. | |
| 954 We only need to remember the first entry node candidate for prevailing | |
| 955 SCCs (but of course have access to all entries for SCCs we are | |
| 956 processing). | |
| 957 ??? For prevailing SCCs we really only need hash and the first | |
| 958 entry candidate, but that's too awkward to implement. */ | |
| 959 tree entries[1]; | |
| 960 }; | |
| 961 | |
| 962 struct tree_scc_hasher : nofree_ptr_hash <tree_scc> | |
| 963 { | |
| 964 static inline hashval_t hash (const tree_scc *); | |
| 965 static inline bool equal (const tree_scc *, const tree_scc *); | |
| 966 }; | |
| 967 | |
| 968 hashval_t | |
| 969 tree_scc_hasher::hash (const tree_scc *scc) | |
| 970 { | |
| 971 return scc->hash; | |
| 972 } | |
| 973 | |
| 974 bool | |
| 975 tree_scc_hasher::equal (const tree_scc *scc1, const tree_scc *scc2) | |
| 976 { | |
| 977 if (scc1->hash != scc2->hash | |
| 978 || scc1->len != scc2->len | |
| 979 || scc1->entry_len != scc2->entry_len) | |
| 980 return false; | |
| 981 return true; | |
| 982 } | |
| 983 | |
| 984 static hash_table<tree_scc_hasher> *tree_scc_hash; | |
| 985 static struct obstack tree_scc_hash_obstack; | |
| 986 | |
| 987 static unsigned long num_merged_types; | |
| 988 static unsigned long num_prevailing_types; | |
| 989 static unsigned long num_type_scc_trees; | |
| 990 static unsigned long total_scc_size; | |
| 991 static unsigned long num_sccs_read; | |
| 992 static unsigned long total_scc_size_merged; | |
| 993 static unsigned long num_sccs_merged; | |
| 994 static unsigned long num_scc_compares; | |
| 995 static unsigned long num_scc_compare_collisions; | |
| 996 | |
| 997 | |
| 998 /* Compare the two entries T1 and T2 of two SCCs that are possibly equal, | |
| 999 recursing through in-SCC tree edges. Returns true if the SCCs entered | |
| 1000 through T1 and T2 are equal and fills in *MAP with the pairs of | |
| 1001 SCC entries we visited, starting with (*MAP)[0] = T1 and (*MAP)[1] = T2. */ | |
| 1002 | |
| 1003 static bool | |
| 1004 compare_tree_sccs_1 (tree t1, tree t2, tree **map) | |
| 1005 { | |
| 1006 enum tree_code code; | |
| 1007 | |
| 1008 /* Mark already visited nodes. */ | |
| 1009 TREE_ASM_WRITTEN (t2) = 1; | |
| 1010 | |
| 1011 /* Push the pair onto map. */ | |
| 1012 (*map)[0] = t1; | |
| 1013 (*map)[1] = t2; | |
| 1014 *map = *map + 2; | |
| 1015 | |
| 1016 /* Compare value-fields. */ | |
| 1017 #define compare_values(X) \ | |
| 1018 do { \ | |
| 1019 if (X(t1) != X(t2)) \ | |
| 1020 return false; \ | |
| 1021 } while (0) | |
| 1022 | |
| 1023 compare_values (TREE_CODE); | |
| 1024 code = TREE_CODE (t1); | |
| 1025 | |
| 1026 if (!TYPE_P (t1)) | |
| 1027 { | |
| 1028 compare_values (TREE_SIDE_EFFECTS); | |
| 1029 compare_values (TREE_CONSTANT); | |
| 1030 compare_values (TREE_READONLY); | |
| 1031 compare_values (TREE_PUBLIC); | |
| 1032 } | |
| 1033 compare_values (TREE_ADDRESSABLE); | |
| 1034 compare_values (TREE_THIS_VOLATILE); | |
| 1035 if (DECL_P (t1)) | |
| 1036 compare_values (DECL_UNSIGNED); | |
| 1037 else if (TYPE_P (t1)) | |
| 1038 compare_values (TYPE_UNSIGNED); | |
| 1039 if (TYPE_P (t1)) | |
| 1040 compare_values (TYPE_ARTIFICIAL); | |
| 1041 else | |
| 1042 compare_values (TREE_NO_WARNING); | |
| 1043 compare_values (TREE_NOTHROW); | |
| 1044 compare_values (TREE_STATIC); | |
| 1045 if (code != TREE_BINFO) | |
| 1046 compare_values (TREE_PRIVATE); | |
| 1047 compare_values (TREE_PROTECTED); | |
| 1048 compare_values (TREE_DEPRECATED); | |
| 1049 if (TYPE_P (t1)) | |
| 1050 { | |
| 1051 if (AGGREGATE_TYPE_P (t1)) | |
| 1052 compare_values (TYPE_REVERSE_STORAGE_ORDER); | |
| 1053 else | |
| 1054 compare_values (TYPE_SATURATING); | |
| 1055 compare_values (TYPE_ADDR_SPACE); | |
| 1056 } | |
| 1057 else if (code == SSA_NAME) | |
| 1058 compare_values (SSA_NAME_IS_DEFAULT_DEF); | |
| 1059 | |
| 1060 if (CODE_CONTAINS_STRUCT (code, TS_INT_CST)) | |
| 1061 { | |
| 1062 if (wi::to_wide (t1) != wi::to_wide (t2)) | |
| 1063 return false; | |
| 1064 } | |
| 1065 | |
| 1066 if (CODE_CONTAINS_STRUCT (code, TS_REAL_CST)) | |
| 1067 { | |
| 1068 /* ??? No suitable compare routine available. */ | |
| 1069 REAL_VALUE_TYPE r1 = TREE_REAL_CST (t1); | |
| 1070 REAL_VALUE_TYPE r2 = TREE_REAL_CST (t2); | |
| 1071 if (r1.cl != r2.cl | |
| 1072 || r1.decimal != r2.decimal | |
| 1073 || r1.sign != r2.sign | |
| 1074 || r1.signalling != r2.signalling | |
| 1075 || r1.canonical != r2.canonical | |
| 1076 || r1.uexp != r2.uexp) | |
| 1077 return false; | |
| 1078 for (unsigned i = 0; i < SIGSZ; ++i) | |
| 1079 if (r1.sig[i] != r2.sig[i]) | |
| 1080 return false; | |
| 1081 } | |
| 1082 | |
| 1083 if (CODE_CONTAINS_STRUCT (code, TS_FIXED_CST)) | |
| 1084 if (!fixed_compare (EQ_EXPR, | |
| 1085 TREE_FIXED_CST_PTR (t1), TREE_FIXED_CST_PTR (t2))) | |
| 1086 return false; | |
| 1087 | |
| 131 | 1088 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) |
| 1089 { | |
| 1090 compare_values (VECTOR_CST_LOG2_NPATTERNS); | |
| 1091 compare_values (VECTOR_CST_NELTS_PER_PATTERN); | |
| 1092 } | |
| 1093 | |
| 111 | 1094 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) |
| 1095 { | |
| 1096 compare_values (DECL_MODE); | |
| 1097 compare_values (DECL_NONLOCAL); | |
| 1098 compare_values (DECL_VIRTUAL_P); | |
| 1099 compare_values (DECL_IGNORED_P); | |
| 1100 compare_values (DECL_ABSTRACT_P); | |
| 1101 compare_values (DECL_ARTIFICIAL); | |
| 1102 compare_values (DECL_USER_ALIGN); | |
| 1103 compare_values (DECL_PRESERVE_P); | |
| 1104 compare_values (DECL_EXTERNAL); | |
| 1105 compare_values (DECL_GIMPLE_REG_P); | |
| 1106 compare_values (DECL_ALIGN); | |
| 1107 if (code == LABEL_DECL) | |
| 1108 { | |
| 1109 compare_values (EH_LANDING_PAD_NR); | |
| 1110 compare_values (LABEL_DECL_UID); | |
| 1111 } | |
| 1112 else if (code == FIELD_DECL) | |
| 1113 { | |
| 1114 compare_values (DECL_PACKED); | |
| 1115 compare_values (DECL_NONADDRESSABLE_P); | |
| 131 | 1116 compare_values (DECL_PADDING_P); |
| 111 | 1117 compare_values (DECL_OFFSET_ALIGN); |
| 1118 } | |
| 1119 else if (code == VAR_DECL) | |
| 1120 { | |
| 1121 compare_values (DECL_HAS_DEBUG_EXPR_P); | |
| 1122 compare_values (DECL_NONLOCAL_FRAME); | |
| 1123 } | |
| 1124 if (code == RESULT_DECL | |
| 1125 || code == PARM_DECL | |
| 1126 || code == VAR_DECL) | |
| 1127 { | |
| 1128 compare_values (DECL_BY_REFERENCE); | |
| 1129 if (code == VAR_DECL | |
| 1130 || code == PARM_DECL) | |
| 1131 compare_values (DECL_HAS_VALUE_EXPR_P); | |
| 1132 } | |
| 1133 } | |
| 1134 | |
| 1135 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL)) | |
| 1136 compare_values (DECL_REGISTER); | |
| 1137 | |
| 1138 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) | |
| 1139 { | |
| 1140 compare_values (DECL_COMMON); | |
| 1141 compare_values (DECL_DLLIMPORT_P); | |
| 1142 compare_values (DECL_WEAK); | |
| 1143 compare_values (DECL_SEEN_IN_BIND_EXPR_P); | |
| 1144 compare_values (DECL_COMDAT); | |
| 1145 compare_values (DECL_VISIBILITY); | |
| 1146 compare_values (DECL_VISIBILITY_SPECIFIED); | |
| 1147 if (code == VAR_DECL) | |
| 1148 { | |
| 1149 compare_values (DECL_HARD_REGISTER); | |
| 1150 /* DECL_IN_TEXT_SECTION is set during final asm output only. */ | |
| 1151 compare_values (DECL_IN_CONSTANT_POOL); | |
| 1152 } | |
| 1153 } | |
| 1154 | |
| 1155 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
| 1156 { | |
| 1157 compare_values (DECL_BUILT_IN_CLASS); | |
| 1158 compare_values (DECL_STATIC_CONSTRUCTOR); | |
| 1159 compare_values (DECL_STATIC_DESTRUCTOR); | |
| 1160 compare_values (DECL_UNINLINABLE); | |
| 1161 compare_values (DECL_POSSIBLY_INLINED); | |
| 1162 compare_values (DECL_IS_NOVOPS); | |
| 1163 compare_values (DECL_IS_RETURNS_TWICE); | |
| 1164 compare_values (DECL_IS_MALLOC); | |
| 1165 compare_values (DECL_IS_OPERATOR_NEW); | |
| 1166 compare_values (DECL_DECLARED_INLINE_P); | |
| 1167 compare_values (DECL_STATIC_CHAIN); | |
| 1168 compare_values (DECL_NO_INLINE_WARNING_P); | |
| 1169 compare_values (DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT); | |
| 1170 compare_values (DECL_NO_LIMIT_STACK); | |
| 1171 compare_values (DECL_DISREGARD_INLINE_LIMITS); | |
| 1172 compare_values (DECL_PURE_P); | |
| 1173 compare_values (DECL_LOOPING_CONST_OR_PURE_P); | |
| 1174 compare_values (DECL_FINAL_P); | |
| 1175 compare_values (DECL_CXX_CONSTRUCTOR_P); | |
| 1176 compare_values (DECL_CXX_DESTRUCTOR_P); | |
| 1177 if (DECL_BUILT_IN_CLASS (t1) != NOT_BUILT_IN) | |
| 1178 compare_values (DECL_FUNCTION_CODE); | |
| 1179 } | |
| 1180 | |
| 1181 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) | |
| 1182 { | |
| 1183 compare_values (TYPE_MODE); | |
| 1184 compare_values (TYPE_STRING_FLAG); | |
| 1185 compare_values (TYPE_NEEDS_CONSTRUCTING); | |
| 1186 if (RECORD_OR_UNION_TYPE_P (t1)) | |
| 1187 { | |
| 1188 compare_values (TYPE_TRANSPARENT_AGGR); | |
| 1189 compare_values (TYPE_FINAL_P); | |
| 1190 } | |
| 1191 else if (code == ARRAY_TYPE) | |
| 1192 compare_values (TYPE_NONALIASED_COMPONENT); | |
| 1193 if (AGGREGATE_TYPE_P (t1)) | |
| 1194 compare_values (TYPE_TYPELESS_STORAGE); | |
| 131 | 1195 compare_values (TYPE_EMPTY_P); |
| 111 | 1196 compare_values (TYPE_PACKED); |
| 1197 compare_values (TYPE_RESTRICT); | |
| 1198 compare_values (TYPE_USER_ALIGN); | |
| 1199 compare_values (TYPE_READONLY); | |
| 1200 compare_values (TYPE_PRECISION); | |
| 1201 compare_values (TYPE_ALIGN); | |
| 1202 /* Do not compare TYPE_ALIAS_SET. Doing so introduce ordering issues | |
| 1203 with calls to get_alias_set which may initialize it for streamed | |
| 1204 in types. */ | |
| 1205 } | |
| 1206 | |
| 1207 /* We don't want to compare locations, so there is nothing do compare | |
| 1208 for TS_EXP. */ | |
| 1209 | |
| 1210 /* BLOCKs are function local and we don't merge anything there, so | |
| 1211 simply refuse to merge. */ | |
| 1212 if (CODE_CONTAINS_STRUCT (code, TS_BLOCK)) | |
| 1213 return false; | |
| 1214 | |
| 1215 if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL)) | |
| 1216 if (strcmp (TRANSLATION_UNIT_LANGUAGE (t1), | |
| 1217 TRANSLATION_UNIT_LANGUAGE (t2)) != 0) | |
| 1218 return false; | |
| 1219 | |
| 1220 if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION)) | |
| 1221 if (!cl_target_option_eq (TREE_TARGET_OPTION (t1), TREE_TARGET_OPTION (t2))) | |
| 1222 return false; | |
| 1223 | |
| 1224 if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION)) | |
| 131 | 1225 if (!cl_optimization_option_eq (TREE_OPTIMIZATION (t1), |
| 1226 TREE_OPTIMIZATION (t2))) | |
| 111 | 1227 return false; |
| 1228 | |
| 1229 if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) | |
| 1230 if (vec_safe_length (BINFO_BASE_ACCESSES (t1)) | |
| 1231 != vec_safe_length (BINFO_BASE_ACCESSES (t2))) | |
| 1232 return false; | |
| 1233 | |
| 1234 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) | |
| 1235 compare_values (CONSTRUCTOR_NELTS); | |
| 1236 | |
| 1237 if (CODE_CONTAINS_STRUCT (code, TS_IDENTIFIER)) | |
| 1238 if (IDENTIFIER_LENGTH (t1) != IDENTIFIER_LENGTH (t2) | |
| 1239 || memcmp (IDENTIFIER_POINTER (t1), IDENTIFIER_POINTER (t2), | |
| 1240 IDENTIFIER_LENGTH (t1)) != 0) | |
| 1241 return false; | |
| 1242 | |
| 1243 if (CODE_CONTAINS_STRUCT (code, TS_STRING)) | |
| 1244 if (TREE_STRING_LENGTH (t1) != TREE_STRING_LENGTH (t2) | |
| 1245 || memcmp (TREE_STRING_POINTER (t1), TREE_STRING_POINTER (t2), | |
| 1246 TREE_STRING_LENGTH (t1)) != 0) | |
| 1247 return false; | |
| 1248 | |
| 1249 if (code == OMP_CLAUSE) | |
| 1250 { | |
| 1251 compare_values (OMP_CLAUSE_CODE); | |
| 1252 switch (OMP_CLAUSE_CODE (t1)) | |
| 1253 { | |
| 1254 case OMP_CLAUSE_DEFAULT: | |
| 1255 compare_values (OMP_CLAUSE_DEFAULT_KIND); | |
| 1256 break; | |
| 1257 case OMP_CLAUSE_SCHEDULE: | |
| 1258 compare_values (OMP_CLAUSE_SCHEDULE_KIND); | |
| 1259 break; | |
| 1260 case OMP_CLAUSE_DEPEND: | |
| 1261 compare_values (OMP_CLAUSE_DEPEND_KIND); | |
| 1262 break; | |
| 1263 case OMP_CLAUSE_MAP: | |
| 1264 compare_values (OMP_CLAUSE_MAP_KIND); | |
| 1265 break; | |
| 1266 case OMP_CLAUSE_PROC_BIND: | |
| 1267 compare_values (OMP_CLAUSE_PROC_BIND_KIND); | |
| 1268 break; | |
| 1269 case OMP_CLAUSE_REDUCTION: | |
| 1270 compare_values (OMP_CLAUSE_REDUCTION_CODE); | |
| 1271 compare_values (OMP_CLAUSE_REDUCTION_GIMPLE_INIT); | |
| 1272 compare_values (OMP_CLAUSE_REDUCTION_GIMPLE_MERGE); | |
| 1273 break; | |
| 1274 default: | |
| 1275 break; | |
| 1276 } | |
| 1277 } | |
| 1278 | |
| 1279 #undef compare_values | |
| 1280 | |
| 1281 | |
| 1282 /* Compare pointer fields. */ | |
| 1283 | |
| 1284 /* Recurse. Search & Replaced from DFS_write_tree_body. | |
| 1285 Folding the early checks into the compare_tree_edges recursion | |
| 1286 macro makes debugging way quicker as you are able to break on | |
| 1287 compare_tree_sccs_1 and simply finish until a call returns false | |
| 1288 to spot the SCC members with the difference. */ | |
| 1289 #define compare_tree_edges(E1, E2) \ | |
| 1290 do { \ | |
| 1291 tree t1_ = (E1), t2_ = (E2); \ | |
| 1292 if (t1_ != t2_ \ | |
| 1293 && (!t1_ || !t2_ \ | |
| 1294 || !TREE_VISITED (t2_) \ | |
| 1295 || (!TREE_ASM_WRITTEN (t2_) \ | |
| 1296 && !compare_tree_sccs_1 (t1_, t2_, map)))) \ | |
| 1297 return false; \ | |
| 1298 /* Only non-NULL trees outside of the SCC may compare equal. */ \ | |
| 1299 gcc_checking_assert (t1_ != t2_ || (!t2_ || !TREE_VISITED (t2_))); \ | |
| 1300 } while (0) | |
| 1301 | |
| 1302 if (CODE_CONTAINS_STRUCT (code, TS_TYPED)) | |
| 1303 { | |
| 1304 if (code != IDENTIFIER_NODE) | |
| 1305 compare_tree_edges (TREE_TYPE (t1), TREE_TYPE (t2)); | |
| 1306 } | |
| 1307 | |
| 1308 if (CODE_CONTAINS_STRUCT (code, TS_VECTOR)) | |
| 1309 { | |
| 1310 /* Note that the number of elements for EXPR has already been emitted | |
| 1311 in EXPR's header (see streamer_write_tree_header). */ | |
| 131 | 1312 unsigned int count = vector_cst_encoded_nelts (t1); |
| 1313 for (unsigned int i = 0; i < count; ++i) | |
| 1314 compare_tree_edges (VECTOR_CST_ENCODED_ELT (t1, i), | |
| 1315 VECTOR_CST_ENCODED_ELT (t2, i)); | |
| 111 | 1316 } |
| 1317 | |
| 1318 if (CODE_CONTAINS_STRUCT (code, TS_COMPLEX)) | |
| 1319 { | |
| 1320 compare_tree_edges (TREE_REALPART (t1), TREE_REALPART (t2)); | |
| 1321 compare_tree_edges (TREE_IMAGPART (t1), TREE_IMAGPART (t2)); | |
| 1322 } | |
| 1323 | |
| 1324 if (CODE_CONTAINS_STRUCT (code, TS_DECL_MINIMAL)) | |
| 1325 { | |
| 1326 compare_tree_edges (DECL_NAME (t1), DECL_NAME (t2)); | |
| 1327 /* ??? Global decls from different TUs have non-matching | |
| 1328 TRANSLATION_UNIT_DECLs. Only consider a small set of | |
| 1329 decls equivalent, we should not end up merging others. */ | |
| 1330 if ((code == TYPE_DECL | |
| 1331 || code == NAMESPACE_DECL | |
| 1332 || code == IMPORTED_DECL | |
| 1333 || code == CONST_DECL | |
| 1334 || (VAR_OR_FUNCTION_DECL_P (t1) | |
| 1335 && (TREE_PUBLIC (t1) || DECL_EXTERNAL (t1)))) | |
| 1336 && DECL_FILE_SCOPE_P (t1) && DECL_FILE_SCOPE_P (t2)) | |
| 1337 ; | |
| 1338 else | |
| 1339 compare_tree_edges (DECL_CONTEXT (t1), DECL_CONTEXT (t2)); | |
| 1340 } | |
| 1341 | |
| 1342 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) | |
| 1343 { | |
| 1344 compare_tree_edges (DECL_SIZE (t1), DECL_SIZE (t2)); | |
| 1345 compare_tree_edges (DECL_SIZE_UNIT (t1), DECL_SIZE_UNIT (t2)); | |
| 1346 compare_tree_edges (DECL_ATTRIBUTES (t1), DECL_ATTRIBUTES (t2)); | |
| 1347 compare_tree_edges (DECL_ABSTRACT_ORIGIN (t1), DECL_ABSTRACT_ORIGIN (t2)); | |
| 1348 if ((code == VAR_DECL | |
| 1349 || code == PARM_DECL) | |
| 1350 && DECL_HAS_VALUE_EXPR_P (t1)) | |
| 1351 compare_tree_edges (DECL_VALUE_EXPR (t1), DECL_VALUE_EXPR (t2)); | |
| 1352 if (code == VAR_DECL | |
| 1353 && DECL_HAS_DEBUG_EXPR_P (t1)) | |
| 1354 compare_tree_edges (DECL_DEBUG_EXPR (t1), DECL_DEBUG_EXPR (t2)); | |
| 1355 /* LTO specific edges. */ | |
| 1356 if (code != FUNCTION_DECL | |
| 1357 && code != TRANSLATION_UNIT_DECL) | |
| 1358 compare_tree_edges (DECL_INITIAL (t1), DECL_INITIAL (t2)); | |
| 1359 } | |
| 1360 | |
| 1361 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON)) | |
| 1362 { | |
| 1363 if (code == FUNCTION_DECL) | |
| 1364 { | |
| 1365 tree a1, a2; | |
| 1366 for (a1 = DECL_ARGUMENTS (t1), a2 = DECL_ARGUMENTS (t2); | |
| 1367 a1 || a2; | |
| 1368 a1 = TREE_CHAIN (a1), a2 = TREE_CHAIN (a2)) | |
| 1369 compare_tree_edges (a1, a2); | |
| 1370 compare_tree_edges (DECL_RESULT (t1), DECL_RESULT (t2)); | |
| 1371 } | |
| 1372 else if (code == TYPE_DECL) | |
| 1373 compare_tree_edges (DECL_ORIGINAL_TYPE (t1), DECL_ORIGINAL_TYPE (t2)); | |
| 1374 } | |
| 1375 | |
| 1376 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) | |
| 1377 { | |
| 1378 /* Make sure we don't inadvertently set the assembler name. */ | |
| 1379 if (DECL_ASSEMBLER_NAME_SET_P (t1)) | |
| 1380 compare_tree_edges (DECL_ASSEMBLER_NAME (t1), | |
| 1381 DECL_ASSEMBLER_NAME (t2)); | |
| 1382 } | |
| 1383 | |
| 1384 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL)) | |
| 1385 { | |
| 1386 compare_tree_edges (DECL_FIELD_OFFSET (t1), DECL_FIELD_OFFSET (t2)); | |
| 1387 compare_tree_edges (DECL_BIT_FIELD_TYPE (t1), DECL_BIT_FIELD_TYPE (t2)); | |
| 1388 compare_tree_edges (DECL_BIT_FIELD_REPRESENTATIVE (t1), | |
| 1389 DECL_BIT_FIELD_REPRESENTATIVE (t2)); | |
| 1390 compare_tree_edges (DECL_FIELD_BIT_OFFSET (t1), | |
| 1391 DECL_FIELD_BIT_OFFSET (t2)); | |
| 1392 compare_tree_edges (DECL_FCONTEXT (t1), DECL_FCONTEXT (t2)); | |
| 1393 } | |
| 1394 | |
| 1395 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
| 1396 { | |
| 1397 compare_tree_edges (DECL_FUNCTION_PERSONALITY (t1), | |
| 1398 DECL_FUNCTION_PERSONALITY (t2)); | |
| 1399 compare_tree_edges (DECL_VINDEX (t1), DECL_VINDEX (t2)); | |
| 1400 compare_tree_edges (DECL_FUNCTION_SPECIFIC_TARGET (t1), | |
| 1401 DECL_FUNCTION_SPECIFIC_TARGET (t2)); | |
| 1402 compare_tree_edges (DECL_FUNCTION_SPECIFIC_OPTIMIZATION (t1), | |
| 1403 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (t2)); | |
| 1404 } | |
| 1405 | |
| 1406 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_COMMON)) | |
| 1407 { | |
| 1408 compare_tree_edges (TYPE_SIZE (t1), TYPE_SIZE (t2)); | |
| 1409 compare_tree_edges (TYPE_SIZE_UNIT (t1), TYPE_SIZE_UNIT (t2)); | |
| 1410 compare_tree_edges (TYPE_ATTRIBUTES (t1), TYPE_ATTRIBUTES (t2)); | |
| 1411 compare_tree_edges (TYPE_NAME (t1), TYPE_NAME (t2)); | |
| 1412 /* Do not compare TYPE_POINTER_TO or TYPE_REFERENCE_TO. They will be | |
| 1413 reconstructed during fixup. */ | |
| 1414 /* Do not compare TYPE_NEXT_VARIANT, we reconstruct the variant lists | |
| 1415 during fixup. */ | |
| 1416 compare_tree_edges (TYPE_MAIN_VARIANT (t1), TYPE_MAIN_VARIANT (t2)); | |
| 1417 /* ??? Global types from different TUs have non-matching | |
| 1418 TRANSLATION_UNIT_DECLs. Still merge them if they are otherwise | |
| 1419 equal. */ | |
| 1420 if (TYPE_FILE_SCOPE_P (t1) && TYPE_FILE_SCOPE_P (t2)) | |
| 1421 ; | |
| 1422 else | |
| 1423 compare_tree_edges (TYPE_CONTEXT (t1), TYPE_CONTEXT (t2)); | |
| 1424 /* TYPE_CANONICAL is re-computed during type merging, so do not | |
| 1425 compare it here. */ | |
| 1426 compare_tree_edges (TYPE_STUB_DECL (t1), TYPE_STUB_DECL (t2)); | |
| 1427 } | |
| 1428 | |
| 1429 if (CODE_CONTAINS_STRUCT (code, TS_TYPE_NON_COMMON)) | |
| 1430 { | |
| 1431 if (code == ENUMERAL_TYPE) | |
| 1432 compare_tree_edges (TYPE_VALUES (t1), TYPE_VALUES (t2)); | |
| 1433 else if (code == ARRAY_TYPE) | |
| 1434 compare_tree_edges (TYPE_DOMAIN (t1), TYPE_DOMAIN (t2)); | |
| 1435 else if (RECORD_OR_UNION_TYPE_P (t1)) | |
| 1436 { | |
| 1437 tree f1, f2; | |
| 1438 for (f1 = TYPE_FIELDS (t1), f2 = TYPE_FIELDS (t2); | |
| 1439 f1 || f2; | |
| 1440 f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2)) | |
| 1441 compare_tree_edges (f1, f2); | |
| 1442 } | |
| 1443 else if (code == FUNCTION_TYPE | |
| 1444 || code == METHOD_TYPE) | |
| 1445 compare_tree_edges (TYPE_ARG_TYPES (t1), TYPE_ARG_TYPES (t2)); | |
| 1446 | |
| 1447 if (!POINTER_TYPE_P (t1)) | |
| 1448 compare_tree_edges (TYPE_MIN_VALUE_RAW (t1), TYPE_MIN_VALUE_RAW (t2)); | |
| 1449 compare_tree_edges (TYPE_MAX_VALUE_RAW (t1), TYPE_MAX_VALUE_RAW (t2)); | |
| 1450 } | |
| 1451 | |
| 1452 if (CODE_CONTAINS_STRUCT (code, TS_LIST)) | |
| 1453 { | |
| 1454 compare_tree_edges (TREE_PURPOSE (t1), TREE_PURPOSE (t2)); | |
| 1455 compare_tree_edges (TREE_VALUE (t1), TREE_VALUE (t2)); | |
| 1456 compare_tree_edges (TREE_CHAIN (t1), TREE_CHAIN (t2)); | |
| 1457 } | |
| 1458 | |
| 1459 if (CODE_CONTAINS_STRUCT (code, TS_VEC)) | |
| 1460 for (int i = 0; i < TREE_VEC_LENGTH (t1); i++) | |
| 1461 compare_tree_edges (TREE_VEC_ELT (t1, i), TREE_VEC_ELT (t2, i)); | |
| 1462 | |
| 1463 if (CODE_CONTAINS_STRUCT (code, TS_EXP)) | |
| 1464 { | |
| 1465 for (int i = 0; i < TREE_OPERAND_LENGTH (t1); i++) | |
| 1466 compare_tree_edges (TREE_OPERAND (t1, i), | |
| 1467 TREE_OPERAND (t2, i)); | |
| 1468 | |
| 1469 /* BLOCKs are function local and we don't merge anything there. */ | |
| 1470 if (TREE_BLOCK (t1) || TREE_BLOCK (t2)) | |
| 1471 return false; | |
| 1472 } | |
| 1473 | |
| 1474 if (CODE_CONTAINS_STRUCT (code, TS_BINFO)) | |
| 1475 { | |
| 1476 unsigned i; | |
| 1477 tree t; | |
| 1478 /* Lengths have already been compared above. */ | |
| 1479 FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (t1), i, t) | |
| 1480 compare_tree_edges (t, BINFO_BASE_BINFO (t2, i)); | |
| 1481 FOR_EACH_VEC_SAFE_ELT (BINFO_BASE_ACCESSES (t1), i, t) | |
| 1482 compare_tree_edges (t, BINFO_BASE_ACCESS (t2, i)); | |
| 1483 compare_tree_edges (BINFO_OFFSET (t1), BINFO_OFFSET (t2)); | |
| 1484 compare_tree_edges (BINFO_VTABLE (t1), BINFO_VTABLE (t2)); | |
| 1485 compare_tree_edges (BINFO_VPTR_FIELD (t1), BINFO_VPTR_FIELD (t2)); | |
| 1486 /* Do not walk BINFO_INHERITANCE_CHAIN, BINFO_SUBVTT_INDEX | |
| 1487 and BINFO_VPTR_INDEX; these are used by C++ FE only. */ | |
| 1488 } | |
| 1489 | |
| 1490 if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR)) | |
| 1491 { | |
| 1492 unsigned i; | |
| 1493 tree index, value; | |
| 1494 /* Lengths have already been compared above. */ | |
| 1495 FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (t1), i, index, value) | |
| 1496 { | |
| 1497 compare_tree_edges (index, CONSTRUCTOR_ELT (t2, i)->index); | |
| 1498 compare_tree_edges (value, CONSTRUCTOR_ELT (t2, i)->value); | |
| 1499 } | |
| 1500 } | |
| 1501 | |
| 1502 if (code == OMP_CLAUSE) | |
| 1503 { | |
| 1504 int i; | |
| 1505 | |
| 1506 for (i = 0; i < omp_clause_num_ops[OMP_CLAUSE_CODE (t1)]; i++) | |
| 1507 compare_tree_edges (OMP_CLAUSE_OPERAND (t1, i), | |
| 1508 OMP_CLAUSE_OPERAND (t2, i)); | |
| 1509 compare_tree_edges (OMP_CLAUSE_CHAIN (t1), OMP_CLAUSE_CHAIN (t2)); | |
| 1510 } | |
| 1511 | |
| 1512 #undef compare_tree_edges | |
| 1513 | |
| 1514 return true; | |
| 1515 } | |
| 1516 | |
| 1517 /* Compare the tree scc SCC to the prevailing candidate PSCC, filling | |
| 1518 out MAP if they are equal. */ | |
| 1519 | |
| 1520 static bool | |
| 1521 compare_tree_sccs (tree_scc *pscc, tree_scc *scc, | |
| 1522 tree *map) | |
| 1523 { | |
| 1524 /* Assume SCC entry hashes are sorted after their cardinality. Which | |
| 1525 means we can simply take the first n-tuple of equal hashes | |
| 1526 (which is recorded as entry_len) and do n SCC entry candidate | |
| 1527 comparisons. */ | |
| 1528 for (unsigned i = 0; i < pscc->entry_len; ++i) | |
| 1529 { | |
| 1530 tree *mapp = map; | |
| 1531 num_scc_compare_collisions++; | |
| 1532 if (compare_tree_sccs_1 (pscc->entries[0], scc->entries[i], &mapp)) | |
| 1533 { | |
| 1534 /* Equal - no need to reset TREE_VISITED or TREE_ASM_WRITTEN | |
| 1535 on the scc as all trees will be freed. */ | |
| 1536 return true; | |
| 1537 } | |
| 1538 /* Reset TREE_ASM_WRITTEN on scc for the next compare or in case | |
| 1539 the SCC prevails. */ | |
| 1540 for (unsigned j = 0; j < scc->len; ++j) | |
| 1541 TREE_ASM_WRITTEN (scc->entries[j]) = 0; | |
| 1542 } | |
| 1543 | |
| 1544 return false; | |
| 1545 } | |
| 1546 | |
| 1547 /* QSort sort function to sort a map of two pointers after the 2nd | |
| 1548 pointer. */ | |
| 1549 | |
| 1550 static int | |
| 1551 cmp_tree (const void *p1_, const void *p2_) | |
| 1552 { | |
| 1553 tree *p1 = (tree *)(const_cast<void *>(p1_)); | |
| 1554 tree *p2 = (tree *)(const_cast<void *>(p2_)); | |
| 1555 if (p1[1] == p2[1]) | |
| 1556 return 0; | |
| 1557 return ((uintptr_t)p1[1] < (uintptr_t)p2[1]) ? -1 : 1; | |
| 1558 } | |
| 1559 | |
| 1560 /* Try to unify the SCC with nodes FROM to FROM + LEN in CACHE and | |
| 1561 hash value SCC_HASH with an already recorded SCC. Return true if | |
| 1562 that was successful, otherwise return false. */ | |
| 1563 | |
| 1564 static bool | |
| 1565 unify_scc (struct data_in *data_in, unsigned from, | |
| 1566 unsigned len, unsigned scc_entry_len, hashval_t scc_hash) | |
| 1567 { | |
| 1568 bool unified_p = false; | |
| 1569 struct streamer_tree_cache_d *cache = data_in->reader_cache; | |
| 1570 tree_scc *scc | |
| 1571 = (tree_scc *) alloca (sizeof (tree_scc) + (len - 1) * sizeof (tree)); | |
| 1572 scc->next = NULL; | |
| 1573 scc->hash = scc_hash; | |
| 1574 scc->len = len; | |
| 1575 scc->entry_len = scc_entry_len; | |
| 1576 for (unsigned i = 0; i < len; ++i) | |
| 1577 { | |
| 1578 tree t = streamer_tree_cache_get_tree (cache, from + i); | |
| 1579 scc->entries[i] = t; | |
| 1580 /* Do not merge SCCs with local entities inside them. Also do | |
| 1581 not merge TRANSLATION_UNIT_DECLs. */ | |
| 1582 if (TREE_CODE (t) == TRANSLATION_UNIT_DECL | |
| 1583 || (VAR_OR_FUNCTION_DECL_P (t) | |
| 1584 && !(TREE_PUBLIC (t) || DECL_EXTERNAL (t))) | |
| 1585 || TREE_CODE (t) == LABEL_DECL) | |
| 1586 { | |
| 1587 /* Avoid doing any work for these cases and do not worry to | |
| 1588 record the SCCs for further merging. */ | |
| 1589 return false; | |
| 1590 } | |
| 1591 } | |
| 1592 | |
| 1593 /* Look for the list of candidate SCCs to compare against. */ | |
| 1594 tree_scc **slot; | |
| 1595 slot = tree_scc_hash->find_slot_with_hash (scc, scc_hash, INSERT); | |
| 1596 if (*slot) | |
| 1597 { | |
| 1598 /* Try unifying against each candidate. */ | |
| 1599 num_scc_compares++; | |
| 1600 | |
| 1601 /* Set TREE_VISITED on the scc so we can easily identify tree nodes | |
| 1602 outside of the scc when following tree edges. Make sure | |
| 1603 that TREE_ASM_WRITTEN is unset so we can use it as 2nd bit | |
| 1604 to track whether we visited the SCC member during the compare. | |
| 1605 We cannot use TREE_VISITED on the pscc members as the extended | |
| 1606 scc and pscc can overlap. */ | |
| 1607 for (unsigned i = 0; i < scc->len; ++i) | |
| 1608 { | |
| 1609 TREE_VISITED (scc->entries[i]) = 1; | |
| 1610 gcc_checking_assert (!TREE_ASM_WRITTEN (scc->entries[i])); | |
| 1611 } | |
| 1612 | |
| 1613 tree *map = XALLOCAVEC (tree, 2 * len); | |
| 1614 for (tree_scc *pscc = *slot; pscc; pscc = pscc->next) | |
| 1615 { | |
| 1616 if (!compare_tree_sccs (pscc, scc, map)) | |
| 1617 continue; | |
| 1618 | |
| 1619 /* Found an equal SCC. */ | |
| 1620 unified_p = true; | |
| 1621 num_scc_compare_collisions--; | |
| 1622 num_sccs_merged++; | |
| 1623 total_scc_size_merged += len; | |
| 1624 | |
| 1625 if (flag_checking) | |
| 1626 for (unsigned i = 0; i < len; ++i) | |
| 1627 { | |
| 1628 tree t = map[2*i+1]; | |
| 1629 enum tree_code code = TREE_CODE (t); | |
| 1630 /* IDENTIFIER_NODEs should be singletons and are merged by the | |
| 1631 streamer. The others should be singletons, too, and we | |
| 1632 should not merge them in any way. */ | |
| 1633 gcc_assert (code != TRANSLATION_UNIT_DECL | |
| 1634 && code != IDENTIFIER_NODE); | |
| 1635 } | |
| 1636 | |
| 1637 /* Fixup the streamer cache with the prevailing nodes according | |
| 1638 to the tree node mapping computed by compare_tree_sccs. */ | |
| 1639 if (len == 1) | |
| 131 | 1640 { |
| 1641 /* If we got a debug reference queued, see if the prevailing | |
| 1642 tree has a debug reference and if not, register the one | |
| 1643 for the tree we are about to throw away. */ | |
| 1644 if (dref_queue.length () == 1) | |
| 1645 { | |
| 1646 dref_entry e = dref_queue.pop (); | |
| 1647 gcc_assert (e.decl | |
| 1648 == streamer_tree_cache_get_tree (cache, from)); | |
| 1649 const char *sym; | |
| 1650 unsigned HOST_WIDE_INT off; | |
| 1651 if (!debug_hooks->die_ref_for_decl (pscc->entries[0], &sym, | |
| 1652 &off)) | |
| 1653 debug_hooks->register_external_die (pscc->entries[0], | |
| 1654 e.sym, e.off); | |
| 1655 } | |
| 1656 lto_maybe_register_decl (data_in, pscc->entries[0], from); | |
| 1657 streamer_tree_cache_replace_tree (cache, pscc->entries[0], from); | |
| 1658 } | |
| 111 | 1659 else |
| 1660 { | |
| 1661 tree *map2 = XALLOCAVEC (tree, 2 * len); | |
| 1662 for (unsigned i = 0; i < len; ++i) | |
| 1663 { | |
| 1664 map2[i*2] = (tree)(uintptr_t)(from + i); | |
| 1665 map2[i*2+1] = scc->entries[i]; | |
| 1666 } | |
| 1667 qsort (map2, len, 2 * sizeof (tree), cmp_tree); | |
| 1668 qsort (map, len, 2 * sizeof (tree), cmp_tree); | |
| 1669 for (unsigned i = 0; i < len; ++i) | |
| 131 | 1670 { |
| 1671 lto_maybe_register_decl (data_in, map[2*i], | |
| 1672 (uintptr_t)map2[2*i]); | |
| 1673 streamer_tree_cache_replace_tree (cache, map[2*i], | |
| 1674 (uintptr_t)map2[2*i]); | |
| 1675 } | |
| 111 | 1676 } |
| 1677 | |
| 1678 /* Free the tree nodes from the read SCC. */ | |
| 1679 data_in->location_cache.revert_location_cache (); | |
| 1680 for (unsigned i = 0; i < len; ++i) | |
| 1681 { | |
| 1682 if (TYPE_P (scc->entries[i])) | |
| 1683 num_merged_types++; | |
| 1684 free_node (scc->entries[i]); | |
| 1685 } | |
| 1686 | |
| 131 | 1687 /* Drop DIE references. |
| 1688 ??? Do as in the size-one SCC case which involves sorting | |
| 1689 the queue. */ | |
| 111 | 1690 dref_queue.truncate (0); |
| 1691 | |
| 1692 break; | |
| 1693 } | |
| 1694 | |
| 1695 /* Reset TREE_VISITED if we didn't unify the SCC with another. */ | |
| 1696 if (!unified_p) | |
| 1697 for (unsigned i = 0; i < scc->len; ++i) | |
| 1698 TREE_VISITED (scc->entries[i]) = 0; | |
| 1699 } | |
| 1700 | |
| 1701 /* If we didn't unify it to any candidate duplicate the relevant | |
| 1702 pieces to permanent storage and link it into the chain. */ | |
| 1703 if (!unified_p) | |
| 1704 { | |
| 1705 tree_scc *pscc | |
| 1706 = XOBNEWVAR (&tree_scc_hash_obstack, tree_scc, sizeof (tree_scc)); | |
| 1707 memcpy (pscc, scc, sizeof (tree_scc)); | |
| 1708 pscc->next = (*slot); | |
| 1709 *slot = pscc; | |
| 1710 } | |
| 1711 return unified_p; | |
| 1712 } | |
| 1713 | |
| 1714 | |
| 131 | 1715 /* Compare types based on source file location. */ |
| 1716 | |
| 1717 static int | |
| 1718 cmp_type_location (const void *p1_, const void *p2_) | |
| 1719 { | |
| 1720 tree *p1 = (tree*)(const_cast<void *>(p1_)); | |
| 1721 tree *p2 = (tree*)(const_cast<void *>(p2_)); | |
| 1722 if (*p1 == *p2) | |
| 1723 return 0; | |
| 1724 | |
| 1725 tree tname1 = TYPE_NAME (*p1); | |
| 1726 tree tname2 = TYPE_NAME (*p2); | |
| 1727 expanded_location xloc1 = expand_location (DECL_SOURCE_LOCATION (tname1)); | |
| 1728 expanded_location xloc2 = expand_location (DECL_SOURCE_LOCATION (tname2)); | |
| 1729 | |
| 1730 const char *f1 = lbasename (xloc1.file); | |
| 1731 const char *f2 = lbasename (xloc2.file); | |
| 1732 int r = strcmp (f1, f2); | |
| 1733 if (r == 0) | |
| 1734 { | |
| 1735 int l1 = xloc1.line; | |
| 1736 int l2 = xloc2.line; | |
| 1737 if (l1 != l2) | |
| 1738 return l1 - l2; | |
| 1739 return xloc1.column - xloc2.column; | |
| 1740 } | |
| 1741 else | |
| 1742 return r; | |
| 1743 } | |
| 1744 | |
|
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1745 /* Read all the symbols from buffer DATA, using descriptors in DECL_DATA. |
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1746 RESOLUTIONS is the set of symbols picked by the linker (read from the |
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1747 resolution file when the linker plugin is being used). */ |
|
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1748 |
|
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|
1749 static void |
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1750 lto_read_decls (struct lto_file_decl_data *decl_data, const void *data, |
| 111 | 1751 vec<ld_plugin_symbol_resolution_t> resolutions) |
|
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1752 { |
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1753 const struct lto_decl_header *header = (const struct lto_decl_header *) data; |
| 111 | 1754 const int decl_offset = sizeof (struct lto_decl_header); |
| 1755 const int main_offset = decl_offset + header->decl_state_size; | |
| 1756 const int string_offset = main_offset + header->main_size; | |
|
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1757 struct data_in *data_in; |
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1758 unsigned int i; |
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1759 const uint32_t *data_ptr, *data_end; |
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1760 uint32_t num_decl_states; |
| 131 | 1761 auto_vec<tree> odr_types; |
|
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1762 |
| 111 | 1763 lto_input_block ib_main ((const char *) data + main_offset, |
| 1764 header->main_size, decl_data->mode_table); | |
|
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1765 |
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1766 data_in = lto_data_in_create (decl_data, (const char *) data + string_offset, |
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1767 header->string_size, resolutions); |
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1768 |
| 111 | 1769 /* We do not uniquify the pre-loaded cache entries, those are middle-end |
| 1770 internal types that should not be merged. */ | |
| 1771 | |
|
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1772 /* Read the global declarations and types. */ |
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1773 while (ib_main.p < ib_main.len) |
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1774 { |
| 111 | 1775 tree t; |
| 1776 unsigned from = data_in->reader_cache->nodes.length (); | |
| 1777 /* Read and uniquify SCCs as in the input stream. */ | |
| 1778 enum LTO_tags tag = streamer_read_record_start (&ib_main); | |
| 1779 if (tag == LTO_tree_scc) | |
| 1780 { | |
| 1781 unsigned len_; | |
| 1782 unsigned scc_entry_len; | |
| 1783 hashval_t scc_hash = lto_input_scc (&ib_main, data_in, &len_, | |
| 1784 &scc_entry_len); | |
| 1785 unsigned len = data_in->reader_cache->nodes.length () - from; | |
| 1786 gcc_assert (len == len_); | |
| 1787 | |
| 1788 total_scc_size += len; | |
| 1789 num_sccs_read++; | |
| 1790 | |
| 1791 /* We have the special case of size-1 SCCs that are pre-merged | |
| 1792 by means of identifier and string sharing for example. | |
| 1793 ??? Maybe we should avoid streaming those as SCCs. */ | |
| 1794 tree first = streamer_tree_cache_get_tree (data_in->reader_cache, | |
| 1795 from); | |
| 1796 if (len == 1 | |
| 1797 && (TREE_CODE (first) == IDENTIFIER_NODE | |
| 1798 || TREE_CODE (first) == INTEGER_CST)) | |
| 1799 continue; | |
| 1800 | |
| 1801 /* Try to unify the SCC with already existing ones. */ | |
| 1802 if (!flag_ltrans | |
| 1803 && unify_scc (data_in, from, | |
| 1804 len, scc_entry_len, scc_hash)) | |
| 1805 continue; | |
| 1806 | |
| 1807 /* Tree merging failed, mark entries in location cache as | |
| 1808 permanent. */ | |
| 1809 data_in->location_cache.accept_location_cache (); | |
| 1810 | |
| 1811 bool seen_type = false; | |
| 1812 for (unsigned i = 0; i < len; ++i) | |
| 1813 { | |
| 1814 tree t = streamer_tree_cache_get_tree (data_in->reader_cache, | |
| 1815 from + i); | |
| 1816 /* Reconstruct the type variant and pointer-to/reference-to | |
| 1817 chains. */ | |
| 1818 if (TYPE_P (t)) | |
| 1819 { | |
| 1820 seen_type = true; | |
| 1821 num_prevailing_types++; | |
| 1822 lto_fixup_prevailing_type (t); | |
| 131 | 1823 |
| 1824 /* Compute the canonical type of all types. | |
| 1825 Because SCC components are streamed in random (hash) order | |
| 1826 we may have encountered the type before while registering | |
| 1827 type canonical of a derived type in the same SCC. */ | |
| 1828 if (!TYPE_CANONICAL (t)) | |
| 1829 gimple_register_canonical_type (t); | |
| 111 | 1830 if (odr_type_p (t)) |
| 131 | 1831 odr_types.safe_push (t); |
| 111 | 1832 } |
| 1833 /* Link shared INTEGER_CSTs into TYPE_CACHED_VALUEs of its | |
| 1834 type which is also member of this SCC. */ | |
| 1835 if (TREE_CODE (t) == INTEGER_CST | |
| 1836 && !TREE_OVERFLOW (t)) | |
| 1837 cache_integer_cst (t); | |
| 1838 if (!flag_ltrans) | |
| 1839 { | |
| 131 | 1840 lto_maybe_register_decl (data_in, t, from + i); |
| 111 | 1841 /* Scan the tree for references to global functions or |
| 1842 variables and record those for later fixup. */ | |
| 1843 if (mentions_vars_p (t)) | |
| 1844 vec_safe_push (tree_with_vars, t); | |
| 1845 } | |
| 1846 } | |
| 1847 | |
| 1848 /* Register DECLs with the debuginfo machinery. */ | |
| 1849 while (!dref_queue.is_empty ()) | |
| 1850 { | |
| 1851 dref_entry e = dref_queue.pop (); | |
| 1852 debug_hooks->register_external_die (e.decl, e.sym, e.off); | |
| 1853 } | |
| 1854 | |
| 1855 if (seen_type) | |
| 1856 num_type_scc_trees += len; | |
| 1857 } | |
| 1858 else | |
| 1859 { | |
| 1860 /* Pickle stray references. */ | |
| 1861 t = lto_input_tree_1 (&ib_main, data_in, tag, 0); | |
| 1862 gcc_assert (t && data_in->reader_cache->nodes.length () == from); | |
| 1863 } | |
|
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1864 } |
| 111 | 1865 data_in->location_cache.apply_location_cache (); |
|
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1866 |
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1867 /* Read in lto_in_decl_state objects. */ |
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1868 data_ptr = (const uint32_t *) ((const char*) data + decl_offset); |
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1869 data_end = |
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1870 (const uint32_t *) ((const char*) data_ptr + header->decl_state_size); |
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1871 num_decl_states = *data_ptr++; |
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1872 |
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1873 gcc_assert (num_decl_states > 0); |
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1874 decl_data->global_decl_state = lto_new_in_decl_state (); |
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1875 data_ptr = lto_read_in_decl_state (data_in, data_ptr, |
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1876 decl_data->global_decl_state); |
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1877 |
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1878 /* Read in per-function decl states and enter them in hash table. */ |
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1879 decl_data->function_decl_states = |
| 111 | 1880 hash_table<decl_state_hasher>::create_ggc (37); |
|
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1881 |
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1882 for (i = 1; i < num_decl_states; i++) |
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1883 { |
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1884 struct lto_in_decl_state *state = lto_new_in_decl_state (); |
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1885 |
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1886 data_ptr = lto_read_in_decl_state (data_in, data_ptr, state); |
| 111 | 1887 lto_in_decl_state **slot |
| 1888 = decl_data->function_decl_states->find_slot (state, INSERT); | |
|
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1889 gcc_assert (*slot == NULL); |
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1890 *slot = state; |
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1891 } |
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1892 |
| 131 | 1893 /* Sort types for the file before registering in ODR machinery. */ |
| 1894 if (lto_location_cache::current_cache) | |
| 1895 lto_location_cache::current_cache->apply_location_cache (); | |
| 1896 odr_types.qsort (cmp_type_location); | |
| 1897 | |
| 1898 /* Register ODR types. */ | |
| 1899 for (unsigned i = 0; i < odr_types.length (); i++) | |
| 1900 register_odr_type (odr_types[i]); | |
| 1901 | |
|
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1902 if (data_ptr != data_end) |
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1903 internal_error ("bytecode stream: garbage at the end of symbols section"); |
| 111 | 1904 |
|
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1905 /* Set the current decl state to be the global state. */ |
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1906 decl_data->current_decl_state = decl_data->global_decl_state; |
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1907 |
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1908 lto_data_in_delete (data_in); |
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1909 } |
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1910 |
| 111 | 1911 /* Custom version of strtoll, which is not portable. */ |
| 1912 | |
| 1913 static int64_t | |
| 1914 lto_parse_hex (const char *p) | |
| 1915 { | |
| 1916 int64_t ret = 0; | |
| 1917 | |
|
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1918 for (; *p != '\0'; ++p) |
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1919 { |
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1920 char c = *p; |
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1921 unsigned char part; |
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1922 ret <<= 4; |
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1923 if (c >= '0' && c <= '9') |
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1924 part = c - '0'; |
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1925 else if (c >= 'a' && c <= 'f') |
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1926 part = c - 'a' + 10; |
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1927 else if (c >= 'A' && c <= 'F') |
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1928 part = c - 'A' + 10; |
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1929 else |
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1930 internal_error ("could not parse hex number"); |
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1931 ret |= part; |
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1932 } |
| 111 | 1933 |
|
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1934 return ret; |
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1935 } |
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1936 |
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1937 /* Read resolution for file named FILE_NAME. The resolution is read from |
|
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1938 RESOLUTION. */ |
|
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1939 |
|
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1940 static void |
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1941 lto_resolution_read (splay_tree file_ids, FILE *resolution, lto_file *file) |
|
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1942 { |
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1943 /* We require that objects in the resolution file are in the same |
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|
1944 order as the lto1 command line. */ |
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1945 unsigned int name_len; |
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1946 char *obj_name; |
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1947 unsigned int num_symbols; |
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1948 unsigned int i; |
|
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1949 struct lto_file_decl_data *file_data; |
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1950 splay_tree_node nd = NULL; |
|
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1951 |
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1952 if (!resolution) |
|
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1953 return; |
|
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1954 |
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1955 name_len = strlen (file->filename); |
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1956 obj_name = XNEWVEC (char, name_len + 1); |
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1957 fscanf (resolution, " "); /* Read white space. */ |
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1958 |
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1959 fread (obj_name, sizeof (char), name_len, resolution); |
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1960 obj_name[name_len] = '\0'; |
| 111 | 1961 if (filename_cmp (obj_name, file->filename) != 0) |
|
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1962 internal_error ("unexpected file name %s in linker resolution file. " |
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1963 "Expected %s", obj_name, file->filename); |
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1964 if (file->offset != 0) |
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1965 { |
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1966 int t; |
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1967 char offset_p[17]; |
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1968 int64_t offset; |
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1969 t = fscanf (resolution, "@0x%16s", offset_p); |
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1970 if (t != 1) |
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1971 internal_error ("could not parse file offset"); |
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1972 offset = lto_parse_hex (offset_p); |
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1973 if (offset != file->offset) |
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|
1974 internal_error ("unexpected offset"); |
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1975 } |
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|
1976 |
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1977 free (obj_name); |
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1978 |
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1979 fscanf (resolution, "%u", &num_symbols); |
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1980 |
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1981 for (i = 0; i < num_symbols; i++) |
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1982 { |
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1983 int t; |
| 111 | 1984 unsigned index; |
| 1985 unsigned HOST_WIDE_INT id; | |
|
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1986 char r_str[27]; |
|
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1987 enum ld_plugin_symbol_resolution r = (enum ld_plugin_symbol_resolution) 0; |
|
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1988 unsigned int j; |
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1989 unsigned int lto_resolution_str_len = |
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1990 sizeof (lto_resolution_str) / sizeof (char *); |
| 111 | 1991 res_pair rp; |
| 1992 | |
| 1993 t = fscanf (resolution, "%u " HOST_WIDE_INT_PRINT_HEX_PURE " %26s %*[^\n]\n", | |
| 1994 &index, &id, r_str); | |
|
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1995 if (t != 3) |
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1996 internal_error ("invalid line in the resolution file"); |
|
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1997 |
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1998 for (j = 0; j < lto_resolution_str_len; j++) |
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1999 { |
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2000 if (strcmp (lto_resolution_str[j], r_str) == 0) |
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2001 { |
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2002 r = (enum ld_plugin_symbol_resolution) j; |
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2003 break; |
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2004 } |
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2005 } |
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2006 if (j == lto_resolution_str_len) |
|
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2007 internal_error ("invalid resolution in the resolution file"); |
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2008 |
| 111 | 2009 if (!(nd && lto_splay_tree_id_equal_p (nd->key, id))) |
|
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2010 { |
| 111 | 2011 nd = lto_splay_tree_lookup (file_ids, id); |
|
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2012 if (nd == NULL) |
| 111 | 2013 internal_error ("resolution sub id %wx not in object file", id); |
|
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2014 } |
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2015 |
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2016 file_data = (struct lto_file_decl_data *)nd->value; |
| 111 | 2017 /* The indexes are very sparse. To save memory save them in a compact |
| 2018 format that is only unpacked later when the subfile is processed. */ | |
| 2019 rp.res = r; | |
| 2020 rp.index = index; | |
| 2021 file_data->respairs.safe_push (rp); | |
| 2022 if (file_data->max_index < index) | |
| 2023 file_data->max_index = index; | |
|
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2024 } |
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2025 } |
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2026 |
| 111 | 2027 /* List of file_decl_datas */ |
| 2028 struct file_data_list | |
| 2029 { | |
| 2030 struct lto_file_decl_data *first, *last; | |
| 2031 }; | |
| 2032 | |
|
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2033 /* Is the name for a id'ed LTO section? */ |
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2034 |
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2035 static int |
| 111 | 2036 lto_section_with_id (const char *name, unsigned HOST_WIDE_INT *id) |
|
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2037 { |
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2038 const char *s; |
|
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2039 |
| 111 | 2040 if (strncmp (name, section_name_prefix, strlen (section_name_prefix))) |
|
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2041 return 0; |
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|
2042 s = strrchr (name, '.'); |
| 111 | 2043 if (!s) |
| 2044 return 0; | |
| 2045 /* If the section is not suffixed with an ID return. */ | |
| 2046 if ((size_t)(s - name) == strlen (section_name_prefix)) | |
| 2047 return 0; | |
| 2048 return sscanf (s, "." HOST_WIDE_INT_PRINT_HEX_PURE, id) == 1; | |
|
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2049 } |
|
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2050 |
|
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|
2051 /* Create file_data of each sub file id */ |
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2052 |
|
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|
2053 static int |
| 111 | 2054 create_subid_section_table (struct lto_section_slot *ls, splay_tree file_ids, |
| 2055 struct file_data_list *list) | |
|
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2056 { |
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|
2057 struct lto_section_slot s_slot, *new_slot; |
| 111 | 2058 unsigned HOST_WIDE_INT id; |
|
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|
2059 splay_tree_node nd; |
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2060 void **hash_slot; |
|
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|
2061 char *new_name; |
|
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|
2062 struct lto_file_decl_data *file_data; |
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2063 |
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2064 if (!lto_section_with_id (ls->name, &id)) |
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|
2065 return 1; |
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2066 |
|
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|
2067 /* Find hash table of sub module id */ |
| 111 | 2068 nd = lto_splay_tree_lookup (file_ids, id); |
|
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|
2069 if (nd != NULL) |
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2070 { |
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2071 file_data = (struct lto_file_decl_data *)nd->value; |
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2072 } |
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|
2073 else |
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|
2074 { |
| 111 | 2075 file_data = ggc_alloc<lto_file_decl_data> (); |
|
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|
2076 memset(file_data, 0, sizeof (struct lto_file_decl_data)); |
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|
2077 file_data->id = id; |
| 131 | 2078 file_data->section_hash_table = lto_obj_create_section_hash_table (); |
| 111 | 2079 lto_splay_tree_insert (file_ids, id, file_data); |
| 2080 | |
| 2081 /* Maintain list in linker order */ | |
| 2082 if (!list->first) | |
| 2083 list->first = file_data; | |
| 2084 if (list->last) | |
| 2085 list->last->next = file_data; | |
| 2086 list->last = file_data; | |
|
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2087 } |
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2088 |
|
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2089 /* Copy section into sub module hash table */ |
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2090 new_name = XDUPVEC (char, ls->name, strlen (ls->name) + 1); |
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2091 s_slot.name = new_name; |
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2092 hash_slot = htab_find_slot (file_data->section_hash_table, &s_slot, INSERT); |
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2093 gcc_assert (*hash_slot == NULL); |
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2094 |
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2095 new_slot = XDUP (struct lto_section_slot, ls); |
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2096 new_slot->name = new_name; |
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2097 *hash_slot = new_slot; |
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2098 return 1; |
|
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2099 } |
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2100 |
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2101 /* Read declarations and other initializations for a FILE_DATA. */ |
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2102 |
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2103 static void |
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2104 lto_file_finalize (struct lto_file_decl_data *file_data, lto_file *file) |
|
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2105 { |
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2106 const char *data; |
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|
2107 size_t len; |
| 111 | 2108 vec<ld_plugin_symbol_resolution_t> |
| 2109 resolutions = vNULL; | |
| 2110 int i; | |
| 2111 res_pair *rp; | |
| 2112 | |
| 2113 /* Create vector for fast access of resolution. We do this lazily | |
| 2114 to save memory. */ | |
| 2115 resolutions.safe_grow_cleared (file_data->max_index + 1); | |
| 2116 for (i = 0; file_data->respairs.iterate (i, &rp); i++) | |
| 2117 resolutions[rp->index] = rp->res; | |
| 2118 file_data->respairs.release (); | |
|
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|
2119 |
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2120 file_data->renaming_hash_table = lto_create_renaming_table (); |
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|
2121 file_data->file_name = file->filename; |
| 111 | 2122 #ifdef ACCEL_COMPILER |
| 2123 lto_input_mode_table (file_data); | |
| 2124 #else | |
| 2125 file_data->mode_table = lto_mode_identity_table; | |
| 2126 #endif | |
|
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|
2127 data = lto_get_section_data (file_data, LTO_section_decls, NULL, &len); |
|
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|
2128 if (data == NULL) |
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|
2129 { |
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|
2130 internal_error ("cannot read LTO decls from %s", file_data->file_name); |
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|
2131 return; |
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|
2132 } |
| 111 | 2133 /* Frees resolutions */ |
| 2134 lto_read_decls (file_data, data, resolutions); | |
|
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|
2135 lto_free_section_data (file_data, LTO_section_decls, NULL, data, len); |
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|
2136 } |
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|
2137 |
| 111 | 2138 /* Finalize FILE_DATA in FILE and increase COUNT. */ |
| 2139 | |
| 2140 static int | |
| 2141 lto_create_files_from_ids (lto_file *file, struct lto_file_decl_data *file_data, | |
| 2142 int *count) | |
|
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|
2143 { |
| 111 | 2144 lto_file_finalize (file_data, file); |
| 2145 if (symtab->dump_file) | |
| 2146 fprintf (symtab->dump_file, | |
| 2147 "Creating file %s with sub id " HOST_WIDE_INT_PRINT_HEX "\n", | |
|
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|
2148 file_data->file_name, file_data->id); |
| 111 | 2149 (*count)++; |
|
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|
2150 return 0; |
|
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2151 } |
|
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|
2152 |
|
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|
2153 /* Generate a TREE representation for all types and external decls |
|
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changeset
|
2154 entities in FILE. |
|
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changeset
|
2155 |
|
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changeset
|
2156 Read all of the globals out of the file. Then read the cgraph |
|
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changeset
|
2157 and process the .o index into the cgraph nodes so that it can open |
|
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changeset
|
2158 the .o file to load the functions and ipa information. */ |
|
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|
2159 |
|
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parents:
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changeset
|
2160 static struct lto_file_decl_data * |
|
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|
2161 lto_file_read (lto_file *file, FILE *resolution_file, int *count) |
|
55
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|
2162 { |
|
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|
2163 struct lto_file_decl_data *file_data = NULL; |
|
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|
2164 splay_tree file_ids; |
|
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|
2165 htab_t section_hash_table; |
| 111 | 2166 struct lto_section_slot *section; |
| 2167 struct file_data_list file_list; | |
| 2168 struct lto_section_list section_list; | |
| 2169 | |
| 2170 memset (§ion_list, 0, sizeof (struct lto_section_list)); | |
| 2171 section_hash_table = lto_obj_build_section_table (file, §ion_list); | |
|
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|
2172 |
|
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|
2173 /* Find all sub modules in the object and put their sections into new hash |
|
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|
2174 tables in a splay tree. */ |
| 111 | 2175 file_ids = lto_splay_tree_new (); |
| 2176 memset (&file_list, 0, sizeof (struct file_data_list)); | |
| 2177 for (section = section_list.first; section != NULL; section = section->next) | |
| 2178 create_subid_section_table (section, file_ids, &file_list); | |
| 2179 | |
|
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|
2180 /* Add resolutions to file ids */ |
|
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|
2181 lto_resolution_read (file_ids, resolution_file, file); |
|
55
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|
2182 |
| 111 | 2183 /* Finalize each lto file for each submodule in the merged object */ |
| 2184 for (file_data = file_list.first; file_data != NULL; file_data = file_data->next) | |
| 2185 lto_create_files_from_ids (file, file_data, count); | |
| 2186 | |
|
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|
2187 splay_tree_delete (file_ids); |
|
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|
2188 htab_delete (section_hash_table); |
|
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|
2189 |
| 111 | 2190 return file_list.first; |
|
55
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|
2191 } |
|
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parents:
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|
2192 |
|
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changeset
|
2193 #if HAVE_MMAP_FILE && HAVE_SYSCONF && defined _SC_PAGE_SIZE |
|
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changeset
|
2194 #define LTO_MMAP_IO 1 |
|
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changeset
|
2195 #endif |
|
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parents:
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|
2196 |
|
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changeset
|
2197 #if LTO_MMAP_IO |
|
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changeset
|
2198 /* Page size of machine is used for mmap and munmap calls. */ |
|
77e2b8dfacca
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changeset
|
2199 static size_t page_mask; |
|
77e2b8dfacca
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parents:
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changeset
|
2200 #endif |
|
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changeset
|
2201 |
|
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parents:
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changeset
|
2202 /* Get the section data of length LEN from FILENAME starting at |
|
77e2b8dfacca
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parents:
diff
changeset
|
2203 OFFSET. The data segment must be freed by the caller when the |
|
77e2b8dfacca
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diff
changeset
|
2204 caller is finished. Returns NULL if all was not well. */ |
|
77e2b8dfacca
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changeset
|
2205 |
|
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changeset
|
2206 static char * |
|
77e2b8dfacca
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changeset
|
2207 lto_read_section_data (struct lto_file_decl_data *file_data, |
|
77e2b8dfacca
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changeset
|
2208 intptr_t offset, size_t len) |
|
77e2b8dfacca
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parents:
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changeset
|
2209 { |
|
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changeset
|
2210 char *result; |
|
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changeset
|
2211 static int fd = -1; |
|
77e2b8dfacca
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changeset
|
2212 static char *fd_name; |
|
77e2b8dfacca
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diff
changeset
|
2213 #if LTO_MMAP_IO |
|
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changeset
|
2214 intptr_t computed_len; |
|
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changeset
|
2215 intptr_t computed_offset; |
|
77e2b8dfacca
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changeset
|
2216 intptr_t diff; |
|
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changeset
|
2217 #endif |
|
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changeset
|
2218 |
|
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changeset
|
2219 /* Keep a single-entry file-descriptor cache. The last file we |
|
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diff
changeset
|
2220 touched will get closed at exit. |
|
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diff
changeset
|
2221 ??? Eventually we want to add a more sophisticated larger cache |
|
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diff
changeset
|
2222 or rather fix function body streaming to not stream them in |
|
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parents:
diff
changeset
|
2223 practically random order. */ |
|
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parents:
diff
changeset
|
2224 if (fd != -1 |
| 111 | 2225 && filename_cmp (fd_name, file_data->file_name) != 0) |
|
55
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changeset
|
2226 { |
|
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diff
changeset
|
2227 free (fd_name); |
|
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diff
changeset
|
2228 close (fd); |
|
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changeset
|
2229 fd = -1; |
|
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changeset
|
2230 } |
|
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changeset
|
2231 if (fd == -1) |
|
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changeset
|
2232 { |
|
63
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55
diff
changeset
|
2233 fd = open (file_data->file_name, O_RDONLY|O_BINARY); |
|
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changeset
|
2234 if (fd == -1) |
| 111 | 2235 { |
| 2236 fatal_error (input_location, "Cannot open %s", file_data->file_name); | |
| 2237 return NULL; | |
| 2238 } | |
|
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diff
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|
2239 fd_name = xstrdup (file_data->file_name); |
|
55
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changeset
|
2240 } |
|
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changeset
|
2241 |
|
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diff
changeset
|
2242 #if LTO_MMAP_IO |
|
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changeset
|
2243 if (!page_mask) |
|
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parents:
diff
changeset
|
2244 { |
|
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parents:
diff
changeset
|
2245 size_t page_size = sysconf (_SC_PAGE_SIZE); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2246 page_mask = ~(page_size - 1); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2247 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2248 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2249 computed_offset = offset & page_mask; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2250 diff = offset - computed_offset; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2251 computed_len = len + diff; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2252 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2253 result = (char *) mmap (NULL, computed_len, PROT_READ, MAP_PRIVATE, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2254 fd, computed_offset); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2255 if (result == MAP_FAILED) |
| 111 | 2256 { |
| 2257 fatal_error (input_location, "Cannot map %s", file_data->file_name); | |
| 2258 return NULL; | |
| 2259 } | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2260 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2261 return result + diff; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2262 #else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2263 result = (char *) xmalloc (len); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2264 if (lseek (fd, offset, SEEK_SET) != offset |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2265 || read (fd, result, len) != (ssize_t) len) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2266 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2267 free (result); |
| 111 | 2268 fatal_error (input_location, "Cannot read %s", file_data->file_name); |
|
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
|
2269 result = NULL; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2270 } |
|
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
|
2271 #ifdef __MINGW32__ |
|
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
|
2272 /* Native windows doesn't supports delayed unlink on opened file. So |
|
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
|
2273 we close file here again. This produces higher I/O load, but at least |
|
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
|
2274 it prevents to have dangling file handles preventing unlink. */ |
|
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
|
2275 free (fd_name); |
|
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
|
2276 fd_name = NULL; |
|
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
|
2277 close (fd); |
|
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
|
2278 fd = -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
|
2279 #endif |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2280 return result; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2281 #endif |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2282 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2283 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2284 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2285 /* Get the section data from FILE_DATA of SECTION_TYPE with NAME. |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2286 NAME will be NULL unless the section type is for a function |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2287 body. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2288 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2289 static const char * |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2290 get_section_data (struct lto_file_decl_data *file_data, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2291 enum lto_section_type section_type, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2292 const char *name, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2293 size_t *len) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2294 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2295 htab_t section_hash_table = file_data->section_hash_table; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2296 struct lto_section_slot *f_slot; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2297 struct lto_section_slot s_slot; |
|
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
|
2298 const char *section_name = lto_get_section_name (section_type, name, file_data); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2299 char *data = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2300 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2301 *len = 0; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2302 s_slot.name = section_name; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2303 f_slot = (struct lto_section_slot *) htab_find (section_hash_table, &s_slot); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2304 if (f_slot) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2305 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2306 data = lto_read_section_data (file_data, f_slot->start, f_slot->len); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2307 *len = f_slot->len; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2308 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2309 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2310 free (CONST_CAST (char *, section_name)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2311 return data; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2312 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2313 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2314 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2315 /* Free the section data from FILE_DATA of SECTION_TYPE with NAME that |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2316 starts at OFFSET and has LEN bytes. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2317 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2318 static void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2319 free_section_data (struct lto_file_decl_data *file_data ATTRIBUTE_UNUSED, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2320 enum lto_section_type section_type ATTRIBUTE_UNUSED, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2321 const char *name ATTRIBUTE_UNUSED, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2322 const char *offset, size_t len ATTRIBUTE_UNUSED) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2323 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2324 #if LTO_MMAP_IO |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2325 intptr_t computed_len; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2326 intptr_t computed_offset; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2327 intptr_t diff; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2328 #endif |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2329 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2330 #if LTO_MMAP_IO |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2331 computed_offset = ((intptr_t) offset) & page_mask; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2332 diff = (intptr_t) offset - computed_offset; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2333 computed_len = len + diff; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2334 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2335 munmap ((caddr_t) computed_offset, computed_len); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2336 #else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2337 free (CONST_CAST(char *, offset)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2338 #endif |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2339 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2340 |
|
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
|
2341 static lto_file *current_lto_file; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2342 |
| 111 | 2343 /* Actually stream out ENCODER into TEMP_FILENAME. */ |
| 2344 | |
| 2345 static void | |
| 131 | 2346 do_stream_out (char *temp_filename, lto_symtab_encoder_t encoder, int part) |
| 111 | 2347 { |
| 2348 lto_file *file = lto_obj_file_open (temp_filename, true); | |
| 2349 if (!file) | |
| 2350 fatal_error (input_location, "lto_obj_file_open() failed"); | |
| 2351 lto_set_current_out_file (file); | |
| 2352 | |
| 131 | 2353 gcc_assert (!dump_file); |
| 2354 streamer_dump_file = dump_begin (TDI_lto_stream_out, NULL, part); | |
| 111 | 2355 ipa_write_optimization_summaries (encoder); |
| 2356 | |
| 2357 free (CONST_CAST (char *, file->filename)); | |
| 2358 | |
| 2359 lto_set_current_out_file (NULL); | |
| 2360 lto_obj_file_close (file); | |
| 2361 free (file); | |
| 131 | 2362 if (streamer_dump_file) |
| 2363 { | |
| 2364 dump_end (TDI_lto_stream_out, streamer_dump_file); | |
| 2365 streamer_dump_file = NULL; | |
| 2366 } | |
| 111 | 2367 } |
| 2368 | |
| 2369 /* Wait for forked process and signal errors. */ | |
| 2370 #ifdef HAVE_WORKING_FORK | |
| 2371 static void | |
| 2372 wait_for_child () | |
| 2373 { | |
| 2374 int status; | |
| 2375 do | |
| 2376 { | |
| 2377 #ifndef WCONTINUED | |
| 2378 #define WCONTINUED 0 | |
| 2379 #endif | |
| 2380 int w = waitpid (0, &status, WUNTRACED | WCONTINUED); | |
| 2381 if (w == -1) | |
| 2382 fatal_error (input_location, "waitpid failed"); | |
| 2383 | |
| 2384 if (WIFEXITED (status) && WEXITSTATUS (status)) | |
| 2385 fatal_error (input_location, "streaming subprocess failed"); | |
| 2386 else if (WIFSIGNALED (status)) | |
| 2387 fatal_error (input_location, | |
| 2388 "streaming subprocess was killed by signal"); | |
| 2389 } | |
| 2390 while (!WIFEXITED (status) && !WIFSIGNALED (status)); | |
| 2391 } | |
| 2392 #endif | |
| 2393 | |
| 2394 /* Stream out ENCODER into TEMP_FILENAME | |
| 2395 Fork if that seems to help. */ | |
| 2396 | |
| 2397 static void | |
| 2398 stream_out (char *temp_filename, lto_symtab_encoder_t encoder, | |
| 131 | 2399 bool ARG_UNUSED (last), int part) |
| 111 | 2400 { |
| 2401 #ifdef HAVE_WORKING_FORK | |
| 2402 static int nruns; | |
| 2403 | |
| 2404 if (lto_parallelism <= 1) | |
| 2405 { | |
| 131 | 2406 do_stream_out (temp_filename, encoder, part); |
| 111 | 2407 return; |
| 2408 } | |
| 2409 | |
| 2410 /* Do not run more than LTO_PARALLELISM streamings | |
| 2411 FIXME: we ignore limits on jobserver. */ | |
| 2412 if (lto_parallelism > 0 && nruns >= lto_parallelism) | |
| 2413 { | |
| 2414 wait_for_child (); | |
| 2415 nruns --; | |
| 2416 } | |
| 2417 /* If this is not the last parallel partition, execute new | |
| 2418 streaming process. */ | |
| 2419 if (!last) | |
| 2420 { | |
| 2421 pid_t cpid = fork (); | |
| 2422 | |
| 2423 if (!cpid) | |
| 2424 { | |
| 2425 setproctitle ("lto1-wpa-streaming"); | |
| 131 | 2426 do_stream_out (temp_filename, encoder, part); |
| 111 | 2427 exit (0); |
| 2428 } | |
| 2429 /* Fork failed; lets do the job ourseleves. */ | |
| 2430 else if (cpid == -1) | |
| 131 | 2431 do_stream_out (temp_filename, encoder, part); |
| 111 | 2432 else |
| 2433 nruns++; | |
| 2434 } | |
| 2435 /* Last partition; stream it and wait for all children to die. */ | |
| 2436 else | |
| 2437 { | |
| 2438 int i; | |
| 131 | 2439 do_stream_out (temp_filename, encoder, part); |
| 111 | 2440 for (i = 0; i < nruns; i++) |
| 2441 wait_for_child (); | |
| 2442 } | |
| 2443 asm_nodes_output = true; | |
| 2444 #else | |
| 131 | 2445 do_stream_out (temp_filename, encoder, part); |
| 111 | 2446 #endif |
| 2447 } | |
| 2448 | |
|
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2449 /* Write all output files in WPA mode and the file with the list of |
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2450 LTRANS units. */ |
|
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2451 |
|
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2452 static void |
|
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2453 lto_wpa_write_files (void) |
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2454 { |
|
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2455 unsigned i, n_sets; |
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2456 ltrans_partition part; |
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2457 FILE *ltrans_output_list_stream; |
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2458 char *temp_filename; |
| 131 | 2459 auto_vec <char *>temp_filenames; |
| 2460 auto_vec <int>temp_priority; | |
|
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2461 size_t blen; |
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2462 |
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2463 /* Open the LTRANS output list. */ |
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2464 if (!ltrans_output_list) |
| 111 | 2465 fatal_error (input_location, "no LTRANS output list filename provided"); |
|
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2466 |
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2467 timevar_push (TV_WHOPR_WPA); |
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2468 |
| 111 | 2469 FOR_EACH_VEC_ELT (ltrans_partitions, i, part) |
| 2470 lto_stats.num_output_symtab_nodes += lto_symtab_encoder_size (part->encoder); | |
|
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2471 |
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2472 timevar_pop (TV_WHOPR_WPA); |
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2473 |
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2474 timevar_push (TV_WHOPR_WPA_IO); |
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2475 |
|
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2476 /* Generate a prefix for the LTRANS unit files. */ |
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2477 blen = strlen (ltrans_output_list); |
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2478 temp_filename = (char *) xmalloc (blen + sizeof ("2147483648.o")); |
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2479 strcpy (temp_filename, ltrans_output_list); |
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2480 if (blen > sizeof (".out") |
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2481 && strcmp (temp_filename + blen - sizeof (".out") + 1, |
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2482 ".out") == 0) |
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2483 temp_filename[blen - sizeof (".out") + 1] = '\0'; |
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2484 blen = strlen (temp_filename); |
|
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2485 |
| 111 | 2486 n_sets = ltrans_partitions.length (); |
| 2487 | |
|
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2488 for (i = 0; i < n_sets; i++) |
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2489 { |
| 111 | 2490 ltrans_partition part = ltrans_partitions[i]; |
|
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2491 |
|
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2492 /* Write all the nodes in SET. */ |
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2493 sprintf (temp_filename + blen, "%u.o", i); |
|
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2494 |
|
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|
2495 if (!quiet_flag) |
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2496 fprintf (stderr, " %s (%s %i insns)", temp_filename, part->name, part->insns); |
| 111 | 2497 if (symtab->dump_file) |
|
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2498 { |
| 111 | 2499 lto_symtab_encoder_iterator lsei; |
| 2500 | |
| 2501 fprintf (symtab->dump_file, "Writing partition %s to file %s, %i insns\n", | |
|
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|
2502 part->name, temp_filename, part->insns); |
| 111 | 2503 fprintf (symtab->dump_file, " Symbols in partition: "); |
| 2504 for (lsei = lsei_start_in_partition (part->encoder); !lsei_end_p (lsei); | |
| 2505 lsei_next_in_partition (&lsei)) | |
| 2506 { | |
| 2507 symtab_node *node = lsei_node (lsei); | |
| 2508 fprintf (symtab->dump_file, "%s ", node->asm_name ()); | |
| 2509 } | |
| 2510 fprintf (symtab->dump_file, "\n Symbols in boundary: "); | |
| 2511 for (lsei = lsei_start (part->encoder); !lsei_end_p (lsei); | |
| 2512 lsei_next (&lsei)) | |
| 2513 { | |
| 2514 symtab_node *node = lsei_node (lsei); | |
| 2515 if (!lto_symtab_encoder_in_partition_p (part->encoder, node)) | |
| 2516 { | |
| 2517 fprintf (symtab->dump_file, "%s ", node->asm_name ()); | |
| 2518 cgraph_node *cnode = dyn_cast <cgraph_node *> (node); | |
| 2519 if (cnode | |
| 2520 && lto_symtab_encoder_encode_body_p (part->encoder, cnode)) | |
| 2521 fprintf (symtab->dump_file, "(body included)"); | |
| 2522 else | |
| 2523 { | |
| 2524 varpool_node *vnode = dyn_cast <varpool_node *> (node); | |
| 2525 if (vnode | |
| 2526 && lto_symtab_encoder_encode_initializer_p (part->encoder, vnode)) | |
| 2527 fprintf (symtab->dump_file, "(initializer included)"); | |
| 2528 } | |
| 2529 } | |
| 2530 } | |
| 2531 fprintf (symtab->dump_file, "\n"); | |
|
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|
2532 } |
| 111 | 2533 gcc_checking_assert (lto_symtab_encoder_size (part->encoder) || !i); |
| 2534 | |
| 131 | 2535 stream_out (temp_filename, part->encoder, i == n_sets - 1, i); |
| 111 | 2536 |
| 2537 part->encoder = NULL; | |
| 2538 | |
| 131 | 2539 temp_priority.safe_push (part->insns); |
| 111 | 2540 temp_filenames.safe_push (xstrdup (temp_filename)); |
| 2541 } | |
| 2542 ltrans_output_list_stream = fopen (ltrans_output_list, "w"); | |
| 2543 if (ltrans_output_list_stream == NULL) | |
| 2544 fatal_error (input_location, | |
| 2545 "opening LTRANS output list %s: %m", ltrans_output_list); | |
| 2546 for (i = 0; i < n_sets; i++) | |
| 2547 { | |
| 2548 unsigned int len = strlen (temp_filenames[i]); | |
| 131 | 2549 if (fprintf (ltrans_output_list_stream, "%i\n", temp_priority[i]) < 0 |
| 2550 || fwrite (temp_filenames[i], 1, len, ltrans_output_list_stream) < len | |
|
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|
2551 || fwrite ("\n", 1, 1, ltrans_output_list_stream) < 1) |
| 111 | 2552 fatal_error (input_location, "writing to LTRANS output list %s: %m", |
|
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|
2553 ltrans_output_list); |
| 111 | 2554 free (temp_filenames[i]); |
|
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2555 } |
|
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2556 |
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|
2557 lto_stats.num_output_files += n_sets; |
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2558 |
|
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|
2559 /* Close the LTRANS output list. */ |
|
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|
2560 if (fclose (ltrans_output_list_stream)) |
| 111 | 2561 fatal_error (input_location, |
| 2562 "closing LTRANS output list %s: %m", ltrans_output_list); | |
| 2563 | |
| 2564 free_ltrans_partitions(); | |
| 2565 free (temp_filename); | |
|
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|
2566 |
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|
2567 timevar_pop (TV_WHOPR_WPA_IO); |
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2568 } |
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2569 |
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2570 |
| 111 | 2571 /* If TT is a variable or function decl replace it with its |
| 2572 prevailing variant. */ | |
| 2573 #define LTO_SET_PREVAIL(tt) \ | |
| 2574 do {\ | |
| 2575 if ((tt) && VAR_OR_FUNCTION_DECL_P (tt) \ | |
| 2576 && (TREE_PUBLIC (tt) || DECL_EXTERNAL (tt))) \ | |
| 2577 { \ | |
| 2578 tt = lto_symtab_prevailing_decl (tt); \ | |
| 2579 fixed = true; \ | |
| 2580 } \ | |
| 2581 } while (0) | |
| 2582 | |
| 2583 /* Ensure that TT isn't a replacable var of function decl. */ | |
| 2584 #define LTO_NO_PREVAIL(tt) \ | |
| 2585 gcc_checking_assert (!(tt) || !VAR_OR_FUNCTION_DECL_P (tt)) | |
| 2586 | |
| 2587 /* Given a tree T replace all fields referring to variables or functions | |
| 2588 with their prevailing variant. */ | |
|
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|
2589 static void |
| 111 | 2590 lto_fixup_prevailing_decls (tree t) |
|
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2591 { |
| 111 | 2592 enum tree_code code = TREE_CODE (t); |
| 2593 bool fixed = false; | |
| 2594 | |
| 2595 gcc_checking_assert (code != TREE_BINFO); | |
| 2596 LTO_NO_PREVAIL (TREE_TYPE (t)); | |
| 2597 if (CODE_CONTAINS_STRUCT (code, TS_COMMON) | |
| 2598 /* lto_symtab_prevail_decl use TREE_CHAIN to link to the prevailing decl. | |
| 2599 in the case T is a prevailed declaration we would ICE here. */ | |
| 2600 && !VAR_OR_FUNCTION_DECL_P (t)) | |
| 2601 LTO_NO_PREVAIL (TREE_CHAIN (t)); | |
| 2602 if (DECL_P (t)) | |
|
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2603 { |
| 111 | 2604 LTO_NO_PREVAIL (DECL_NAME (t)); |
| 2605 LTO_SET_PREVAIL (DECL_CONTEXT (t)); | |
| 2606 if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) | |
| 2607 { | |
| 2608 LTO_SET_PREVAIL (DECL_SIZE (t)); | |
| 2609 LTO_SET_PREVAIL (DECL_SIZE_UNIT (t)); | |
| 2610 LTO_SET_PREVAIL (DECL_INITIAL (t)); | |
| 2611 LTO_NO_PREVAIL (DECL_ATTRIBUTES (t)); | |
| 2612 LTO_SET_PREVAIL (DECL_ABSTRACT_ORIGIN (t)); | |
| 2613 } | |
| 2614 if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) | |
| 2615 { | |
| 2616 LTO_NO_PREVAIL (DECL_ASSEMBLER_NAME_RAW (t)); | |
| 2617 } | |
| 2618 if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON)) | |
|
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2619 { |
| 111 | 2620 LTO_NO_PREVAIL (DECL_RESULT_FLD (t)); |
| 2621 } | |
| 2622 if (CODE_CONTAINS_STRUCT (code, TS_FUNCTION_DECL)) | |
| 2623 { | |
| 2624 LTO_NO_PREVAIL (DECL_ARGUMENTS (t)); | |
| 2625 LTO_SET_PREVAIL (DECL_FUNCTION_PERSONALITY (t)); | |
| 2626 LTO_NO_PREVAIL (DECL_VINDEX (t)); | |
| 2627 } | |
| 2628 if (CODE_CONTAINS_STRUCT (code, TS_FIELD_DECL)) | |
| 2629 { | |
| 2630 LTO_SET_PREVAIL (DECL_FIELD_OFFSET (t)); | |
| 2631 LTO_NO_PREVAIL (DECL_BIT_FIELD_TYPE (t)); | |
| 2632 LTO_NO_PREVAIL (DECL_QUALIFIER (t)); | |
| 2633 LTO_NO_PREVAIL (DECL_FIELD_BIT_OFFSET (t)); | |
| 2634 LTO_NO_PREVAIL (DECL_FCONTEXT (t)); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2635 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2636 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2637 else if (TYPE_P (t)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2638 { |
| 111 | 2639 LTO_NO_PREVAIL (TYPE_CACHED_VALUES (t)); |
| 2640 LTO_SET_PREVAIL (TYPE_SIZE (t)); | |
| 2641 LTO_SET_PREVAIL (TYPE_SIZE_UNIT (t)); | |
| 2642 LTO_NO_PREVAIL (TYPE_ATTRIBUTES (t)); | |
| 2643 LTO_NO_PREVAIL (TYPE_NAME (t)); | |
| 2644 | |
| 2645 LTO_SET_PREVAIL (TYPE_MIN_VALUE_RAW (t)); | |
| 2646 LTO_SET_PREVAIL (TYPE_MAX_VALUE_RAW (t)); | |
| 2647 LTO_NO_PREVAIL (TYPE_LANG_SLOT_1 (t)); | |
| 2648 | |
| 2649 LTO_SET_PREVAIL (TYPE_CONTEXT (t)); | |
| 2650 | |
| 2651 LTO_NO_PREVAIL (TYPE_CANONICAL (t)); | |
| 2652 LTO_NO_PREVAIL (TYPE_MAIN_VARIANT (t)); | |
| 2653 LTO_NO_PREVAIL (TYPE_NEXT_VARIANT (t)); | |
|
55
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2654 } |
| 111 | 2655 else if (EXPR_P (t)) |
|
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2656 { |
| 111 | 2657 int i; |
| 2658 for (i = TREE_OPERAND_LENGTH (t) - 1; i >= 0; --i) | |
| 2659 LTO_SET_PREVAIL (TREE_OPERAND (t, i)); | |
| 2660 } | |
| 2661 else if (TREE_CODE (t) == CONSTRUCTOR) | |
| 2662 { | |
| 2663 unsigned i; | |
| 2664 tree val; | |
| 2665 FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (t), i, val) | |
| 2666 LTO_SET_PREVAIL (val); | |
| 2667 } | |
| 2668 else | |
| 2669 { | |
| 2670 switch (code) | |
|
55
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2671 { |
| 111 | 2672 case TREE_LIST: |
| 2673 LTO_SET_PREVAIL (TREE_VALUE (t)); | |
| 2674 LTO_SET_PREVAIL (TREE_PURPOSE (t)); | |
| 2675 LTO_NO_PREVAIL (TREE_PURPOSE (t)); | |
| 2676 break; | |
| 2677 default: | |
| 2678 gcc_unreachable (); | |
|
55
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2679 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2680 } |
| 111 | 2681 /* If we fixed nothing, then we missed something seen by |
| 2682 mentions_vars_p. */ | |
| 2683 gcc_checking_assert (fixed); | |
|
55
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parents:
diff
changeset
|
2684 } |
| 111 | 2685 #undef LTO_SET_PREVAIL |
| 2686 #undef LTO_NO_PREVAIL | |
|
55
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update it from 4.4.3 to 4.5.0
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parents:
diff
changeset
|
2687 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2688 /* Helper function of lto_fixup_decls. Walks the var and fn streams in STATE, |
| 111 | 2689 replaces var and function decls with the corresponding prevailing def. */ |
|
55
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parents:
diff
changeset
|
2690 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2691 static void |
| 111 | 2692 lto_fixup_state (struct lto_in_decl_state *state) |
|
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2693 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2694 unsigned i, si; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2695 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2696 /* Although we only want to replace FUNCTION_DECLs and VAR_DECLs, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2697 we still need to walk from all DECLs to find the reachable |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2698 FUNCTION_DECLs and VAR_DECLs. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2699 for (si = 0; si < LTO_N_DECL_STREAMS; si++) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2700 { |
| 111 | 2701 vec<tree, va_gc> *trees = state->streams[si]; |
| 2702 for (i = 0; i < vec_safe_length (trees); i++) | |
| 2703 { | |
| 2704 tree t = (*trees)[i]; | |
| 2705 if (flag_checking && TYPE_P (t)) | |
| 2706 verify_type (t); | |
| 2707 if (VAR_OR_FUNCTION_DECL_P (t) | |
| 2708 && (TREE_PUBLIC (t) || DECL_EXTERNAL (t))) | |
| 2709 (*trees)[i] = lto_symtab_prevailing_decl (t); | |
| 2710 } | |
|
55
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parents:
diff
changeset
|
2711 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2712 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2713 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2714 /* Fix the decls from all FILES. Replaces each decl with the corresponding |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2715 prevailing one. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2716 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2717 static void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2718 lto_fixup_decls (struct lto_file_decl_data **files) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2719 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2720 unsigned int i; |
| 111 | 2721 tree t; |
| 2722 | |
| 2723 if (tree_with_vars) | |
| 2724 FOR_EACH_VEC_ELT ((*tree_with_vars), i, t) | |
| 2725 lto_fixup_prevailing_decls (t); | |
| 2726 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2727 for (i = 0; files[i]; i++) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2728 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2729 struct lto_file_decl_data *file = files[i]; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2730 struct lto_in_decl_state *state = file->global_decl_state; |
| 111 | 2731 lto_fixup_state (state); |
| 2732 | |
| 2733 hash_table<decl_state_hasher>::iterator iter; | |
| 2734 lto_in_decl_state *elt; | |
| 2735 FOR_EACH_HASH_TABLE_ELEMENT (*file->function_decl_states, elt, | |
| 2736 lto_in_decl_state *, iter) | |
| 2737 lto_fixup_state (elt); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2738 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2739 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2740 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
2741 static GTY((length ("lto_stats.num_input_files + 1"))) struct lto_file_decl_data **all_file_decl_data; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2742 |
|
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2743 /* Turn file datas for sub files into a single array, so that they look |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2744 like separate files for further passes. */ |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2745 |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2746 static void |
|
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
|
2747 lto_flatten_files (struct lto_file_decl_data **orig, int count, int last_file_ix) |
|
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
|
2748 { |
|
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
|
2749 struct lto_file_decl_data *n, *next; |
|
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
|
2750 int i, k; |
|
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
|
2751 |
|
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
|
2752 lto_stats.num_input_files = count; |
|
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
|
2753 all_file_decl_data |
| 111 | 2754 = ggc_cleared_vec_alloc<lto_file_decl_data_ptr> (count + 1); |
|
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2755 /* Set the hooks so that all of the ipa passes can read in their data. */ |
|
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
|
2756 lto_set_in_hooks (all_file_decl_data, get_section_data, free_section_data); |
|
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
|
2757 for (i = 0, k = 0; i < last_file_ix; i++) |
|
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
|
2758 { |
|
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
|
2759 for (n = orig[i]; n != NULL; n = next) |
|
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
|
2760 { |
|
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
|
2761 all_file_decl_data[k++] = n; |
|
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
|
2762 next = n->next; |
|
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
|
2763 n->next = NULL; |
|
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
|
2764 } |
|
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
|
2765 } |
|
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
|
2766 all_file_decl_data[k] = NULL; |
|
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
|
2767 gcc_assert (k == count); |
|
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
|
2768 } |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2769 |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2770 /* Input file data before flattening (i.e. splitting them to subfiles to support |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2771 incremental linking. */ |
|
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2772 static int real_file_count; |
|
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
|
2773 static GTY((length ("real_file_count + 1"))) struct lto_file_decl_data **real_file_decl_data; |
|
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
|
2774 |
| 111 | 2775 static void print_lto_report_1 (void); |
| 2776 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2777 /* Read all the symbols from the input files FNAMES. NFILES is the |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2778 number of files requested in the command line. Instantiate a |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2779 global call graph by aggregating all the sub-graphs found in each |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2780 file. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
diff
changeset
|
2781 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2782 static void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2783 read_cgraph_and_symbols (unsigned nfiles, const char **fnames) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2784 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2785 unsigned int i, last_file_ix; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
2786 FILE *resolution; |
|
67
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|
2787 int count = 0; |
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|
2788 struct lto_file_decl_data **decl_data; |
| 111 | 2789 symtab_node *snode; |
| 2790 | |
| 2791 symtab->initialize (); | |
|
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|
2792 |
|
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|
2793 timevar_push (TV_IPA_LTO_DECL_IN); |
|
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|
2794 |
| 111 | 2795 #ifdef ACCEL_COMPILER |
| 2796 section_name_prefix = OFFLOAD_SECTION_NAME_PREFIX; | |
| 2797 lto_stream_offload_p = true; | |
| 2798 #endif | |
| 2799 | |
|
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|
2800 real_file_decl_data |
| 111 | 2801 = decl_data = ggc_cleared_vec_alloc<lto_file_decl_data_ptr> (nfiles + 1); |
|
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|
2802 real_file_count = nfiles; |
|
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|
2803 |
|
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|
2804 /* Read the resolution file. */ |
|
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|
2805 resolution = NULL; |
|
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|
2806 if (resolution_file_name) |
|
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|
2807 { |
|
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|
2808 int t; |
|
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|
2809 unsigned num_objects; |
|
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|
2810 |
|
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|
2811 resolution = fopen (resolution_file_name, "r"); |
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|
2812 if (resolution == NULL) |
| 111 | 2813 fatal_error (input_location, |
| 2814 "could not open symbol resolution file: %m"); | |
|
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2815 |
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|
2816 t = fscanf (resolution, "%u", &num_objects); |
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|
2817 gcc_assert (t == 1); |
|
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|
2818 |
|
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|
2819 /* True, since the plugin splits the archives. */ |
|
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|
2820 gcc_assert (num_objects == nfiles); |
|
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|
2821 } |
| 111 | 2822 symtab->state = LTO_STREAMING; |
| 2823 | |
| 2824 canonical_type_hash_cache = new hash_map<const_tree, hashval_t> (251); | |
| 2825 gimple_canonical_types = htab_create (16381, gimple_canonical_type_hash, | |
| 2826 gimple_canonical_type_eq, NULL); | |
| 2827 gcc_obstack_init (&tree_scc_hash_obstack); | |
| 2828 tree_scc_hash = new hash_table<tree_scc_hasher> (4096); | |
| 2829 | |
| 2830 /* Register the common node types with the canonical type machinery so | |
| 2831 we properly share alias-sets across languages and TUs. Do not | |
| 2832 expose the common nodes as type merge target - those that should be | |
| 2833 are already exposed so by pre-loading the LTO streamer caches. | |
| 2834 Do two passes - first clear TYPE_CANONICAL and then re-compute it. */ | |
| 2835 for (i = 0; i < itk_none; ++i) | |
| 2836 lto_register_canonical_types (integer_types[i], true); | |
| 2837 for (i = 0; i < stk_type_kind_last; ++i) | |
| 2838 lto_register_canonical_types (sizetype_tab[i], true); | |
| 2839 for (i = 0; i < TI_MAX; ++i) | |
| 2840 lto_register_canonical_types (global_trees[i], true); | |
| 2841 for (i = 0; i < itk_none; ++i) | |
| 2842 lto_register_canonical_types (integer_types[i], false); | |
| 2843 for (i = 0; i < stk_type_kind_last; ++i) | |
| 2844 lto_register_canonical_types (sizetype_tab[i], false); | |
| 2845 for (i = 0; i < TI_MAX; ++i) | |
| 2846 lto_register_canonical_types (global_trees[i], false); | |
|
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|
2847 |
|
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|
2848 if (!quiet_flag) |
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|
2849 fprintf (stderr, "Reading object files:"); |
|
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|
2850 |
|
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|
2851 /* Read all of the object files specified on the command line. */ |
|
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|
2852 for (i = 0, last_file_ix = 0; i < nfiles; ++i) |
|
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|
2853 { |
|
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|
2854 struct lto_file_decl_data *file_data = NULL; |
|
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|
2855 if (!quiet_flag) |
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|
2856 { |
|
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|
2857 fprintf (stderr, " %s", fnames[i]); |
|
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|
2858 fflush (stderr); |
|
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|
2859 } |
|
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|
2860 |
|
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|
2861 current_lto_file = lto_obj_file_open (fnames[i], false); |
|
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|
2862 if (!current_lto_file) |
|
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|
2863 break; |
|
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|
2864 |
|
67
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|
2865 file_data = lto_file_read (current_lto_file, resolution, &count); |
|
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|
2866 if (!file_data) |
|
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|
2867 { |
|
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|
2868 lto_obj_file_close (current_lto_file); |
| 111 | 2869 free (current_lto_file); |
|
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|
2870 current_lto_file = NULL; |
|
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|
2871 break; |
|
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|
2872 } |
|
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|
2873 |
|
67
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|
2874 decl_data[last_file_ix++] = file_data; |
|
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|
2875 |
|
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|
2876 lto_obj_file_close (current_lto_file); |
| 111 | 2877 free (current_lto_file); |
|
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|
2878 current_lto_file = NULL; |
|
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|
2879 } |
|
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|
2880 |
|
67
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|
2881 lto_flatten_files (decl_data, count, last_file_ix); |
|
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|
2882 lto_stats.num_input_files = count; |
|
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|
2883 ggc_free(decl_data); |
|
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|
2884 real_file_decl_data = NULL; |
|
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|
2885 |
|
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|
2886 if (resolution_file_name) |
|
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|
2887 fclose (resolution); |
|
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2888 |
| 111 | 2889 /* Show the LTO report before launching LTRANS. */ |
| 2890 if (flag_lto_report || (flag_wpa && flag_lto_report_wpa)) | |
| 2891 print_lto_report_1 (); | |
| 2892 | |
| 2893 /* Free gimple type merging datastructures. */ | |
| 2894 delete tree_scc_hash; | |
| 2895 tree_scc_hash = NULL; | |
| 2896 obstack_free (&tree_scc_hash_obstack, NULL); | |
| 2897 htab_delete (gimple_canonical_types); | |
| 2898 gimple_canonical_types = NULL; | |
| 2899 delete canonical_type_hash_cache; | |
| 2900 canonical_type_hash_cache = NULL; | |
| 2901 | |
| 2902 /* At this stage we know that majority of GGC memory is reachable. | |
| 2903 Growing the limits prevents unnecesary invocation of GGC. */ | |
| 2904 ggc_grow (); | |
| 2905 ggc_collect (); | |
| 2906 | |
|
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|
2907 /* Set the hooks so that all of the ipa passes can read in their data. */ |
|
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|
2908 lto_set_in_hooks (all_file_decl_data, get_section_data, free_section_data); |
|
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|
2909 |
|
67
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|
2910 timevar_pop (TV_IPA_LTO_DECL_IN); |
|
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|
2911 |
|
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|
2912 if (!quiet_flag) |
|
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|
2913 fprintf (stderr, "\nReading the callgraph\n"); |
|
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|
2914 |
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|
2915 timevar_push (TV_IPA_LTO_CGRAPH_IO); |
| 111 | 2916 /* Read the symtab. */ |
| 2917 input_symtab (); | |
| 2918 | |
| 2919 input_offload_tables (!flag_ltrans); | |
| 2920 | |
| 2921 /* Store resolutions into the symbol table. */ | |
| 2922 | |
| 2923 FOR_EACH_SYMBOL (snode) | |
| 131 | 2924 if (snode->externally_visible && snode->real_symbol_p () |
| 2925 && snode->lto_file_data && snode->lto_file_data->resolution_map | |
| 2926 && !(TREE_CODE (snode->decl) == FUNCTION_DECL | |
| 2927 && fndecl_built_in_p (snode->decl)) | |
| 2928 && !(VAR_P (snode->decl) && DECL_HARD_REGISTER (snode->decl))) | |
| 2929 { | |
| 2930 ld_plugin_symbol_resolution_t *res; | |
| 2931 | |
| 2932 res = snode->lto_file_data->resolution_map->get (snode->decl); | |
| 2933 if (!res || *res == LDPR_UNKNOWN) | |
| 2934 { | |
| 2935 if (snode->output_to_lto_symbol_table_p ()) | |
| 2936 fatal_error (input_location, "missing resolution data for %s", | |
| 2937 IDENTIFIER_POINTER | |
| 2938 (DECL_ASSEMBLER_NAME (snode->decl))); | |
| 2939 } | |
| 2940 else | |
| 2941 snode->resolution = *res; | |
| 2942 } | |
| 111 | 2943 for (i = 0; all_file_decl_data[i]; i++) |
| 2944 if (all_file_decl_data[i]->resolution_map) | |
| 2945 { | |
| 2946 delete all_file_decl_data[i]->resolution_map; | |
| 2947 all_file_decl_data[i]->resolution_map = NULL; | |
| 2948 } | |
| 2949 | |
|
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|
2950 timevar_pop (TV_IPA_LTO_CGRAPH_IO); |
|
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|
2951 |
|
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|
2952 if (!quiet_flag) |
|
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|
2953 fprintf (stderr, "Merging declarations\n"); |
|
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|
2954 |
|
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|
2955 timevar_push (TV_IPA_LTO_DECL_MERGE); |
| 111 | 2956 /* Merge global decls. In ltrans mode we read merged cgraph, we do not |
| 2957 need to care about resolving symbols again, we only need to replace | |
| 2958 duplicated declarations read from the callgraph and from function | |
| 2959 sections. */ | |
| 2960 if (!flag_ltrans) | |
| 2961 { | |
| 2962 lto_symtab_merge_decls (); | |
| 2963 | |
| 2964 /* If there were errors during symbol merging bail out, we have no | |
| 2965 good way to recover here. */ | |
| 2966 if (seen_error ()) | |
| 2967 fatal_error (input_location, | |
| 2968 "errors during merging of translation units"); | |
| 2969 | |
| 2970 /* Fixup all decls. */ | |
| 2971 lto_fixup_decls (all_file_decl_data); | |
| 2972 } | |
| 2973 if (tree_with_vars) | |
| 2974 ggc_free (tree_with_vars); | |
| 2975 tree_with_vars = NULL; | |
|
63
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diff
changeset
|
2976 ggc_collect (); |
|
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diff
changeset
|
2977 |
|
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diff
changeset
|
2978 timevar_pop (TV_IPA_LTO_DECL_MERGE); |
|
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diff
changeset
|
2979 /* Each pass will set the appropriate timer. */ |
|
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diff
changeset
|
2980 |
|
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parents:
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diff
changeset
|
2981 if (!quiet_flag) |
|
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diff
changeset
|
2982 fprintf (stderr, "Reading summaries\n"); |
|
55
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parents:
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changeset
|
2983 |
|
77e2b8dfacca
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parents:
diff
changeset
|
2984 /* Read the IPA summary data. */ |
|
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diff
changeset
|
2985 if (flag_ltrans) |
|
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diff
changeset
|
2986 ipa_read_optimization_summaries (); |
|
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diff
changeset
|
2987 else |
|
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diff
changeset
|
2988 ipa_read_summaries (); |
|
55
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parents:
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changeset
|
2989 |
| 111 | 2990 for (i = 0; all_file_decl_data[i]; i++) |
| 2991 { | |
| 2992 gcc_assert (all_file_decl_data[i]->symtab_node_encoder); | |
| 2993 lto_symtab_encoder_delete (all_file_decl_data[i]->symtab_node_encoder); | |
| 2994 all_file_decl_data[i]->symtab_node_encoder = NULL; | |
| 2995 lto_free_function_in_decl_state (all_file_decl_data[i]->global_decl_state); | |
| 2996 all_file_decl_data[i]->global_decl_state = NULL; | |
| 2997 all_file_decl_data[i]->current_decl_state = NULL; | |
| 2998 } | |
| 2999 | |
| 3000 if (!flag_ltrans) | |
|
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diff
changeset
|
3001 { |
| 131 | 3002 /* Finally merge the cgraph according to the decl merging decisions. */ |
| 3003 timevar_push (TV_IPA_LTO_CGRAPH_MERGE); | |
| 3004 | |
| 3005 gcc_assert (!dump_file); | |
| 3006 dump_file = dump_begin (lto_link_dump_id, NULL); | |
| 3007 | |
| 3008 if (dump_file) | |
| 3009 { | |
| 3010 fprintf (dump_file, "Before merging:\n"); | |
| 3011 symtab->dump (dump_file); | |
| 3012 } | |
| 111 | 3013 lto_symtab_merge_symbols (); |
| 3014 /* Removal of unreachable symbols is needed to make verify_symtab to pass; | |
| 3015 we are still having duplicated comdat groups containing local statics. | |
| 3016 We could also just remove them while merging. */ | |
| 3017 symtab->remove_unreachable_nodes (dump_file); | |
| 131 | 3018 ggc_collect (); |
| 3019 | |
| 3020 if (dump_file) | |
| 3021 dump_end (lto_link_dump_id, dump_file); | |
| 3022 dump_file = NULL; | |
| 3023 timevar_pop (TV_IPA_LTO_CGRAPH_MERGE); | |
|
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diff
changeset
|
3024 } |
| 111 | 3025 symtab->state = IPA_SSA; |
| 131 | 3026 /* All node removals happening here are useless, because |
| 3027 WPA should not stream them. Still always perform remove_unreachable_nodes | |
| 3028 because we may reshape clone tree, get rid of dead masters of inline | |
| 3029 clones and remove symbol entries for read-only variables we keep around | |
| 3030 only to be able to constant fold them. */ | |
|
55
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parents:
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changeset
|
3031 if (flag_ltrans) |
| 131 | 3032 { |
| 3033 if (symtab->dump_file) | |
| 3034 symtab->dump (symtab->dump_file); | |
| 3035 symtab->remove_unreachable_nodes (symtab->dump_file); | |
| 3036 } | |
|
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diff
changeset
|
3037 |
|
55
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parents:
diff
changeset
|
3038 /* Indicate that the cgraph is built and ready. */ |
| 111 | 3039 symtab->function_flags_ready = true; |
| 3040 | |
|
63
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diff
changeset
|
3041 ggc_free (all_file_decl_data); |
|
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diff
changeset
|
3042 all_file_decl_data = NULL; |
|
55
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parents:
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changeset
|
3043 } |
|
77e2b8dfacca
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parents:
diff
changeset
|
3044 |
|
77e2b8dfacca
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parents:
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changeset
|
3045 |
|
77e2b8dfacca
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parents:
diff
changeset
|
3046 /* Materialize all the bodies for all the nodes in the callgraph. */ |
|
77e2b8dfacca
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parents:
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changeset
|
3047 |
|
77e2b8dfacca
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parents:
diff
changeset
|
3048 static void |
|
77e2b8dfacca
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parents:
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changeset
|
3049 materialize_cgraph (void) |
|
77e2b8dfacca
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parents:
diff
changeset
|
3050 { |
|
77e2b8dfacca
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parents:
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changeset
|
3051 struct cgraph_node *node; |
|
77e2b8dfacca
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parents:
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changeset
|
3052 timevar_id_t lto_timer; |
|
77e2b8dfacca
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changeset
|
3053 |
|
63
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diff
changeset
|
3054 if (!quiet_flag) |
|
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diff
changeset
|
3055 fprintf (stderr, |
|
b7f97abdc517
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55
diff
changeset
|
3056 flag_wpa ? "Materializing decls:" : "Reading function bodies:"); |
|
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diff
changeset
|
3057 |
|
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parents:
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diff
changeset
|
3058 |
| 111 | 3059 FOR_EACH_FUNCTION (node) |
|
55
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parents:
diff
changeset
|
3060 { |
| 111 | 3061 if (node->lto_file_data) |
|
55
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parents:
diff
changeset
|
3062 { |
|
77e2b8dfacca
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parents:
diff
changeset
|
3063 lto_materialize_function (node); |
|
77e2b8dfacca
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parents:
diff
changeset
|
3064 lto_stats.num_input_cgraph_nodes++; |
|
77e2b8dfacca
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changeset
|
3065 } |
|
77e2b8dfacca
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parents:
diff
changeset
|
3066 } |
|
77e2b8dfacca
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parents:
diff
changeset
|
3067 |
|
77e2b8dfacca
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parents:
diff
changeset
|
3068 |
|
77e2b8dfacca
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parents:
diff
changeset
|
3069 /* Start the appropriate timer depending on the mode that we are |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3070 operating in. */ |
|
77e2b8dfacca
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parents:
diff
changeset
|
3071 lto_timer = (flag_wpa) ? TV_WHOPR_WPA |
|
77e2b8dfacca
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parents:
diff
changeset
|
3072 : (flag_ltrans) ? TV_WHOPR_LTRANS |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3073 : TV_LTO; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3074 timevar_push (lto_timer); |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3075 |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3076 current_function_decl = NULL; |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3077 set_cfun (NULL); |
|
77e2b8dfacca
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parents:
diff
changeset
|
3078 |
|
63
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55
diff
changeset
|
3079 if (!quiet_flag) |
|
b7f97abdc517
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parents:
55
diff
changeset
|
3080 fprintf (stderr, "\n"); |
|
55
77e2b8dfacca
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parents:
diff
changeset
|
3081 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3082 timevar_pop (lto_timer); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3083 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3084 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3085 |
| 111 | 3086 /* Show various memory usage statistics related to LTO. */ |
| 3087 static void | |
| 3088 print_lto_report_1 (void) | |
| 3089 { | |
| 3090 const char *pfx = (flag_lto) ? "LTO" : (flag_wpa) ? "WPA" : "LTRANS"; | |
| 3091 fprintf (stderr, "%s statistics\n", pfx); | |
| 3092 | |
| 3093 fprintf (stderr, "[%s] read %lu SCCs of average size %f\n", | |
| 3094 pfx, num_sccs_read, total_scc_size / (double)num_sccs_read); | |
| 3095 fprintf (stderr, "[%s] %lu tree bodies read in total\n", pfx, total_scc_size); | |
| 3096 if (flag_wpa && tree_scc_hash) | |
| 3097 { | |
| 3098 fprintf (stderr, "[%s] tree SCC table: size %ld, %ld elements, " | |
| 3099 "collision ratio: %f\n", pfx, | |
| 3100 (long) tree_scc_hash->size (), | |
| 3101 (long) tree_scc_hash->elements (), | |
| 3102 tree_scc_hash->collisions ()); | |
| 3103 hash_table<tree_scc_hasher>::iterator hiter; | |
| 3104 tree_scc *scc, *max_scc = NULL; | |
| 3105 unsigned max_length = 0; | |
| 3106 FOR_EACH_HASH_TABLE_ELEMENT (*tree_scc_hash, scc, x, hiter) | |
| 3107 { | |
| 3108 unsigned length = 0; | |
| 3109 tree_scc *s = scc; | |
| 3110 for (; s; s = s->next) | |
| 3111 length++; | |
| 3112 if (length > max_length) | |
| 3113 { | |
| 3114 max_length = length; | |
| 3115 max_scc = scc; | |
| 3116 } | |
| 3117 } | |
| 3118 fprintf (stderr, "[%s] tree SCC max chain length %u (size %u)\n", | |
| 3119 pfx, max_length, max_scc->len); | |
| 3120 fprintf (stderr, "[%s] Compared %lu SCCs, %lu collisions (%f)\n", pfx, | |
| 3121 num_scc_compares, num_scc_compare_collisions, | |
| 3122 num_scc_compare_collisions / (double) num_scc_compares); | |
| 3123 fprintf (stderr, "[%s] Merged %lu SCCs\n", pfx, num_sccs_merged); | |
| 3124 fprintf (stderr, "[%s] Merged %lu tree bodies\n", pfx, | |
| 3125 total_scc_size_merged); | |
| 3126 fprintf (stderr, "[%s] Merged %lu types\n", pfx, num_merged_types); | |
| 3127 fprintf (stderr, "[%s] %lu types prevailed (%lu associated trees)\n", | |
| 3128 pfx, num_prevailing_types, num_type_scc_trees); | |
| 3129 fprintf (stderr, "[%s] GIMPLE canonical type table: size %ld, " | |
| 3130 "%ld elements, %ld searches, %ld collisions (ratio: %f)\n", pfx, | |
| 3131 (long) htab_size (gimple_canonical_types), | |
| 3132 (long) htab_elements (gimple_canonical_types), | |
| 3133 (long) gimple_canonical_types->searches, | |
| 3134 (long) gimple_canonical_types->collisions, | |
| 3135 htab_collisions (gimple_canonical_types)); | |
| 3136 fprintf (stderr, "[%s] GIMPLE canonical type pointer-map: " | |
| 3137 "%lu elements, %ld searches\n", pfx, | |
| 3138 num_canonical_type_hash_entries, | |
| 3139 num_canonical_type_hash_queries); | |
| 3140 } | |
| 3141 | |
| 3142 print_lto_report (pfx); | |
| 3143 } | |
| 3144 | |
|
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3145 /* Perform whole program analysis (WPA) on the callgraph and write out the |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3146 optimization plan. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3147 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3148 static void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3149 do_whole_program_analysis (void) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3150 { |
| 111 | 3151 symtab_node *node; |
| 3152 | |
| 3153 lto_parallelism = 1; | |
| 3154 | |
| 3155 /* TODO: jobserver communicatoin is not supported, yet. */ | |
| 3156 if (!strcmp (flag_wpa, "jobserver")) | |
| 3157 lto_parallelism = -1; | |
| 3158 else | |
| 3159 { | |
| 3160 lto_parallelism = atoi (flag_wpa); | |
| 3161 if (lto_parallelism <= 0) | |
| 3162 lto_parallelism = 0; | |
| 3163 } | |
| 3164 | |
| 3165 timevar_start (TV_PHASE_OPT_GEN); | |
| 3166 | |
|
55
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3167 /* Note that since we are in WPA mode, materialize_cgraph will not |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3168 actually read in all the function bodies. It only materializes |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3169 the decls and cgraph nodes so that analysis can be performed. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3170 materialize_cgraph (); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
3171 |
|
77e2b8dfacca
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diff
changeset
|
3172 /* Reading in the cgraph uses different timers, start timing WPA now. */ |
|
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|
3173 timevar_push (TV_WHOPR_WPA); |
|
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|
3174 |
|
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|
3175 if (pre_ipa_mem_report) |
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|
3176 { |
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|
3177 fprintf (stderr, "Memory consumption before IPA\n"); |
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|
3178 dump_memory_report (false); |
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|
3179 } |
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|
3180 |
| 111 | 3181 symtab->function_flags_ready = true; |
| 3182 | |
| 3183 if (symtab->dump_file) | |
| 3184 symtab->dump (symtab->dump_file); | |
|
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|
3185 bitmap_obstack_initialize (NULL); |
| 111 | 3186 symtab->state = IPA_SSA; |
| 3187 | |
| 3188 execute_ipa_pass_list (g->get_passes ()->all_regular_ipa_passes); | |
| 3189 | |
| 3190 /* When WPA analysis raises errors, do not bother to output anything. */ | |
| 3191 if (seen_error ()) | |
| 3192 return; | |
| 3193 | |
|
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|
3194 /* We are about to launch the final LTRANS phase, stop the WPA timer. */ |
|
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|
3195 timevar_pop (TV_WHOPR_WPA); |
|
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|
3196 |
| 111 | 3197 timevar_push (TV_WHOPR_PARTITIONING); |
| 131 | 3198 |
| 3199 gcc_assert (!dump_file); | |
| 3200 dump_file = dump_begin (partition_dump_id, NULL); | |
| 3201 | |
| 3202 if (dump_file) | |
| 3203 symtab->dump (dump_file); | |
| 3204 | |
| 3205 symtab_node::checking_verify_symtab_nodes (); | |
| 3206 bitmap_obstack_release (NULL); | |
| 111 | 3207 if (flag_lto_partition == LTO_PARTITION_1TO1) |
|
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|
3208 lto_1_to_1_map (); |
| 111 | 3209 else if (flag_lto_partition == LTO_PARTITION_MAX) |
| 3210 lto_max_map (); | |
| 3211 else if (flag_lto_partition == LTO_PARTITION_ONE) | |
| 3212 lto_balanced_map (1, INT_MAX); | |
| 3213 else if (flag_lto_partition == LTO_PARTITION_BALANCED) | |
| 3214 lto_balanced_map (PARAM_VALUE (PARAM_LTO_PARTITIONS), | |
| 3215 PARAM_VALUE (MAX_PARTITION_SIZE)); | |
|
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|
3216 else |
| 111 | 3217 gcc_unreachable (); |
| 3218 | |
| 3219 /* Inline summaries are needed for balanced partitioning. Free them now so | |
| 3220 the memory can be used for streamer caches. */ | |
| 3221 ipa_free_fn_summary (); | |
| 3222 | |
| 3223 /* AUX pointers are used by partitioning code to bookkeep number of | |
| 3224 partitions symbol is in. This is no longer needed. */ | |
| 3225 FOR_EACH_SYMBOL (node) | |
| 3226 node->aux = NULL; | |
| 3227 | |
| 3228 lto_stats.num_cgraph_partitions += ltrans_partitions.length (); | |
| 3229 | |
| 3230 /* Find out statics that need to be promoted | |
| 3231 to globals with hidden visibility because they are accessed from multiple | |
| 3232 partitions. */ | |
| 3233 lto_promote_cross_file_statics (); | |
| 131 | 3234 if (dump_file) |
| 3235 dump_end (partition_dump_id, dump_file); | |
| 3236 dump_file = NULL; | |
| 111 | 3237 timevar_pop (TV_WHOPR_PARTITIONING); |
| 3238 | |
| 3239 timevar_stop (TV_PHASE_OPT_GEN); | |
| 3240 | |
| 3241 /* Collect a last time - in lto_wpa_write_files we may end up forking | |
| 3242 with the idea that this doesn't increase memory usage. So we | |
| 3243 absoultely do not want to collect after that. */ | |
| 3244 ggc_collect (); | |
| 3245 | |
| 3246 timevar_start (TV_PHASE_STREAM_OUT); | |
|
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|
3247 if (!quiet_flag) |
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|
3248 { |
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|
3249 fprintf (stderr, "\nStreaming out"); |
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|
3250 fflush (stderr); |
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|
3251 } |
|
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|
3252 lto_wpa_write_files (); |
|
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|
3253 if (!quiet_flag) |
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|
3254 fprintf (stderr, "\n"); |
| 111 | 3255 timevar_stop (TV_PHASE_STREAM_OUT); |
|
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3256 |
|
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|
3257 if (post_ipa_mem_report) |
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|
3258 { |
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|
3259 fprintf (stderr, "Memory consumption after IPA\n"); |
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|
3260 dump_memory_report (false); |
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|
3261 } |
|
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|
3262 |
|
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|
3263 /* Show the LTO report before launching LTRANS. */ |
| 111 | 3264 if (flag_lto_report || (flag_wpa && flag_lto_report_wpa)) |
| 3265 print_lto_report_1 (); | |
| 3266 if (mem_report_wpa) | |
| 3267 dump_memory_report (true); | |
|
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|
3268 } |
|
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|
3269 |
|
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|
3270 |
|
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|
3271 static GTY(()) tree lto_eh_personality_decl; |
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|
3272 |
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|
3273 /* Return the LTO personality function decl. */ |
|
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|
3274 |
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|
3275 tree |
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|
3276 lto_eh_personality (void) |
|
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|
3277 { |
|
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|
3278 if (!lto_eh_personality_decl) |
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|
3279 { |
|
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|
3280 /* Use the first personality DECL for our personality if we don't |
|
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|
3281 support multiple ones. This ensures that we don't artificially |
|
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|
3282 create the need for them in a single-language program. */ |
|
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|
3283 if (first_personality_decl && !dwarf2out_do_cfi_asm ()) |
|
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|
3284 lto_eh_personality_decl = first_personality_decl; |
|
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|
3285 else |
|
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|
3286 lto_eh_personality_decl = lhd_gcc_personality (); |
|
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|
3287 } |
|
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|
3288 |
|
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|
3289 return lto_eh_personality_decl; |
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|
3290 } |
|
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|
3291 |
|
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|
3292 /* Set the process name based on the LTO mode. */ |
|
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|
3293 |
|
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|
3294 static void |
|
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|
3295 lto_process_name (void) |
|
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|
3296 { |
|
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|
3297 if (flag_lto) |
| 131 | 3298 setproctitle (flag_incremental_link == INCREMENTAL_LINK_LTO |
| 3299 ? "lto1-inclink" : "lto1-lto"); | |
|
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|
3300 if (flag_wpa) |
|
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|
3301 setproctitle ("lto1-wpa"); |
|
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|
3302 if (flag_ltrans) |
|
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|
3303 setproctitle ("lto1-ltrans"); |
|
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|
3304 } |
|
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|
3305 |
| 111 | 3306 |
| 3307 /* Initialize the LTO front end. */ | |
| 3308 | |
| 3309 static void | |
| 3310 lto_init (void) | |
| 3311 { | |
| 3312 lto_process_name (); | |
| 3313 lto_streamer_hooks_init (); | |
| 3314 lto_reader_init (); | |
| 3315 lto_set_in_hooks (NULL, get_section_data, free_section_data); | |
| 3316 memset (<o_stats, 0, sizeof (lto_stats)); | |
| 3317 bitmap_obstack_initialize (NULL); | |
| 3318 gimple_register_cfg_hooks (); | |
| 3319 #ifndef ACCEL_COMPILER | |
| 3320 unsigned char *table | |
| 3321 = ggc_vec_alloc<unsigned char> (MAX_MACHINE_MODE); | |
| 3322 for (int m = 0; m < MAX_MACHINE_MODE; m++) | |
| 3323 table[m] = m; | |
| 3324 lto_mode_identity_table = table; | |
| 3325 #endif | |
| 3326 } | |
| 3327 | |
| 3328 /* Create artificial pointers for "omp declare target link" vars. */ | |
| 3329 | |
| 3330 static void | |
| 3331 offload_handle_link_vars (void) | |
| 3332 { | |
| 3333 #ifdef ACCEL_COMPILER | |
| 3334 varpool_node *var; | |
| 3335 FOR_EACH_VARIABLE (var) | |
| 3336 if (lookup_attribute ("omp declare target link", | |
| 3337 DECL_ATTRIBUTES (var->decl))) | |
| 3338 { | |
| 3339 tree type = build_pointer_type (TREE_TYPE (var->decl)); | |
| 3340 tree link_ptr_var = make_node (VAR_DECL); | |
| 3341 TREE_TYPE (link_ptr_var) = type; | |
| 3342 TREE_USED (link_ptr_var) = 1; | |
| 3343 TREE_STATIC (link_ptr_var) = 1; | |
| 3344 SET_DECL_MODE (link_ptr_var, TYPE_MODE (type)); | |
| 3345 DECL_SIZE (link_ptr_var) = TYPE_SIZE (type); | |
| 3346 DECL_SIZE_UNIT (link_ptr_var) = TYPE_SIZE_UNIT (type); | |
| 3347 DECL_ARTIFICIAL (link_ptr_var) = 1; | |
| 3348 tree var_name = DECL_ASSEMBLER_NAME (var->decl); | |
| 3349 char *new_name | |
| 3350 = ACONCAT ((IDENTIFIER_POINTER (var_name), "_linkptr", NULL)); | |
| 3351 DECL_NAME (link_ptr_var) = get_identifier (new_name); | |
| 3352 SET_DECL_ASSEMBLER_NAME (link_ptr_var, DECL_NAME (link_ptr_var)); | |
| 3353 SET_DECL_VALUE_EXPR (var->decl, build_simple_mem_ref (link_ptr_var)); | |
| 3354 DECL_HAS_VALUE_EXPR_P (var->decl) = 1; | |
| 3355 } | |
| 3356 #endif | |
| 3357 } | |
| 3358 | |
| 3359 | |
|
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|
3360 /* Main entry point for the GIMPLE front end. This front end has |
|
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|
3361 three main personalities: |
|
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|
3362 |
|
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|
3363 - LTO (-flto). All the object files on the command line are |
|
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|
3364 loaded in memory and processed as a single translation unit. |
|
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|
3365 This is the traditional link-time optimization behavior. |
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3366 |
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3367 - WPA (-fwpa). Only the callgraph and summary information for |
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3368 files in the command file are loaded. A single callgraph |
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3369 (without function bodies) is instantiated for the whole set of |
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3370 files. IPA passes are only allowed to analyze the call graph |
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3371 and make transformation decisions. The callgraph is |
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3372 partitioned, each partition is written to a new object file |
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3373 together with the transformation decisions. |
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3374 |
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3375 - LTRANS (-fltrans). Similar to -flto but it prevents the IPA |
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3376 summary files from running again. Since WPA computed summary |
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3377 information and decided what transformations to apply, LTRANS |
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3378 simply applies them. */ |
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3379 |
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3380 void |
|
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diff
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3381 lto_main (void) |
|
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3382 { |
| 111 | 3383 /* LTO is called as a front end, even though it is not a front end. |
| 3384 Because it is called as a front end, TV_PHASE_PARSING and | |
| 3385 TV_PARSE_GLOBAL are active, and we need to turn them off while | |
| 3386 doing LTO. Later we turn them back on so they are active up in | |
| 3387 toplev.c. */ | |
| 3388 timevar_pop (TV_PARSE_GLOBAL); | |
| 3389 timevar_stop (TV_PHASE_PARSING); | |
| 3390 | |
| 3391 timevar_start (TV_PHASE_SETUP); | |
| 3392 | |
| 3393 /* Initialize the LTO front end. */ | |
| 3394 lto_init (); | |
| 3395 | |
| 3396 timevar_stop (TV_PHASE_SETUP); | |
| 3397 timevar_start (TV_PHASE_STREAM_IN); | |
|
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3398 |
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parents:
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3399 /* Read all the symbols and call graph from all the files in the |
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3400 command line. */ |
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3401 read_cgraph_and_symbols (num_in_fnames, in_fnames); |
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3402 |
| 111 | 3403 timevar_stop (TV_PHASE_STREAM_IN); |
| 3404 | |
|
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diff
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3405 if (!seen_error ()) |
|
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3406 { |
| 111 | 3407 offload_handle_link_vars (); |
| 3408 | |
|
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3409 /* If WPA is enabled analyze the whole call graph and create an |
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parents:
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3410 optimization plan. Otherwise, read in all the function |
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3411 bodies and continue with optimization. */ |
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parents:
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|
3412 if (flag_wpa) |
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3413 do_whole_program_analysis (); |
|
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3414 else |
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3415 { |
| 111 | 3416 timevar_start (TV_PHASE_OPT_GEN); |
| 3417 | |
|
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3418 materialize_cgraph (); |
| 111 | 3419 if (!flag_ltrans) |
| 3420 lto_promote_statics_nonwpa (); | |
| 3421 | |
| 3422 /* Annotate the CU DIE and mark the early debug phase as finished. */ | |
| 131 | 3423 debuginfo_early_start (); |
| 111 | 3424 debug_hooks->early_finish ("<artificial>"); |
| 131 | 3425 debuginfo_early_stop (); |
|
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|
3426 |
|
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|
3427 /* Let the middle end know that we have read and merged all of |
|
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|
3428 the input files. */ |
| 111 | 3429 symtab->compile (); |
| 3430 | |
| 3431 timevar_stop (TV_PHASE_OPT_GEN); | |
|
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3432 |
|
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|
3433 /* FIXME lto, if the processes spawned by WPA fail, we miss |
|
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parents:
diff
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|
3434 the chance to print WPA's report, so WPA will call |
|
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|
3435 print_lto_report before launching LTRANS. If LTRANS was |
|
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parents:
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|
3436 launched directly by the driver we would not need to do |
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parents:
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|
3437 this. */ |
| 111 | 3438 if (flag_lto_report || (flag_wpa && flag_lto_report_wpa)) |
| 3439 print_lto_report_1 (); | |
|
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3440 } |
|
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parents:
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|
3441 } |
| 111 | 3442 |
| 3443 /* Here we make LTO pretend to be a parser. */ | |
| 3444 timevar_start (TV_PHASE_PARSING); | |
| 3445 timevar_push (TV_PARSE_GLOBAL); | |
|
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parents:
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|
3446 } |
|
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parents:
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|
3447 |
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parents:
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|
3448 #include "gt-lto-lto.h" |