| File: | build/gcc/cgraphclones.c |
| Warning: | line 835, column 6 Value stored to 'edge' is never read |
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| 1 | /* Callgraph clones |
| 2 | Copyright (C) 2003-2021 Free Software Foundation, Inc. |
| 3 | Contributed by Jan Hubicka |
| 4 | |
| 5 | This file is part of GCC. |
| 6 | |
| 7 | GCC is free software; you can redistribute it and/or modify it under |
| 8 | the terms of the GNU General Public License as published by the Free |
| 9 | Software Foundation; either version 3, or (at your option) any later |
| 10 | version. |
| 11 | |
| 12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 15 | for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GCC; see the file COPYING3. If not see |
| 19 | <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | /* This module provide facilities for cloning functions. I.e. creating |
| 22 | new functions based on existing functions with simple modifications, |
| 23 | such as replacement of parameters. |
| 24 | |
| 25 | To allow whole program optimization without actual presence of function |
| 26 | bodies, an additional infrastructure is provided for so-called virtual |
| 27 | clones |
| 28 | |
| 29 | A virtual clone in the callgraph is a function that has no |
| 30 | associated body, just a description of how to create its body based |
| 31 | on a different function (which itself may be a virtual clone). |
| 32 | |
| 33 | The description of function modifications includes adjustments to |
| 34 | the function's signature (which allows, for example, removing or |
| 35 | adding function arguments), substitutions to perform on the |
| 36 | function body, and, for inlined functions, a pointer to the |
| 37 | function that it will be inlined into. |
| 38 | |
| 39 | It is also possible to redirect any edge of the callgraph from a |
| 40 | function to its virtual clone. This implies updating of the call |
| 41 | site to adjust for the new function signature. |
| 42 | |
| 43 | Most of the transformations performed by inter-procedural |
| 44 | optimizations can be represented via virtual clones. For |
| 45 | instance, a constant propagation pass can produce a virtual clone |
| 46 | of the function which replaces one of its arguments by a |
| 47 | constant. The inliner can represent its decisions by producing a |
| 48 | clone of a function whose body will be later integrated into |
| 49 | a given function. |
| 50 | |
| 51 | Using virtual clones, the program can be easily updated |
| 52 | during the Execute stage, solving most of pass interactions |
| 53 | problems that would otherwise occur during Transform. |
| 54 | |
| 55 | Virtual clones are later materialized in the LTRANS stage and |
| 56 | turned into real functions. Passes executed after the virtual |
| 57 | clone were introduced also perform their Transform stage |
| 58 | on new functions, so for a pass there is no significant |
| 59 | difference between operating on a real function or a virtual |
| 60 | clone introduced before its Execute stage. |
| 61 | |
| 62 | Optimization passes then work on virtual clones introduced before |
| 63 | their Execute stage as if they were real functions. The |
| 64 | only difference is that clones are not visible during the |
| 65 | Generate Summary stage. */ |
| 66 | |
| 67 | #include "config.h" |
| 68 | #include "system.h" |
| 69 | #include "coretypes.h" |
| 70 | #include "backend.h" |
| 71 | #include "target.h" |
| 72 | #include "rtl.h" |
| 73 | #include "tree.h" |
| 74 | #include "gimple.h" |
| 75 | #include "stringpool.h" |
| 76 | #include "cgraph.h" |
| 77 | #include "lto-streamer.h" |
| 78 | #include "tree-eh.h" |
| 79 | #include "tree-cfg.h" |
| 80 | #include "tree-inline.h" |
| 81 | #include "dumpfile.h" |
| 82 | #include "gimple-pretty-print.h" |
| 83 | #include "alloc-pool.h" |
| 84 | #include "symbol-summary.h" |
| 85 | #include "tree-vrp.h" |
| 86 | #include "ipa-prop.h" |
| 87 | #include "ipa-fnsummary.h" |
| 88 | #include "symtab-thunks.h" |
| 89 | #include "symtab-clones.h" |
| 90 | |
| 91 | /* Create clone of edge in the node N represented by CALL_EXPR |
| 92 | the callgraph. */ |
| 93 | |
| 94 | cgraph_edge * |
| 95 | cgraph_edge::clone (cgraph_node *n, gcall *call_stmt, unsigned stmt_uid, |
| 96 | profile_count num, profile_count den, |
| 97 | bool update_original) |
| 98 | { |
| 99 | cgraph_edge *new_edge; |
| 100 | profile_count::adjust_for_ipa_scaling (&num, &den); |
| 101 | profile_count prof_count = count.apply_scale (num, den); |
| 102 | |
| 103 | if (indirect_unknown_callee) |
| 104 | { |
| 105 | tree decl; |
| 106 | |
| 107 | if (call_stmt && (decl = gimple_call_fndecl (call_stmt)) |
| 108 | /* When the call is speculative, we need to resolve it |
| 109 | via cgraph_resolve_speculation and not here. */ |
| 110 | && !speculative) |
| 111 | { |
| 112 | cgraph_node *callee = cgraph_node::get (decl); |
| 113 | gcc_checking_assert (callee)((void)(!(callee) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 113, __FUNCTION__), 0 : 0)); |
| 114 | new_edge = n->create_edge (callee, call_stmt, prof_count, true); |
| 115 | } |
| 116 | else |
| 117 | { |
| 118 | new_edge = n->create_indirect_edge (call_stmt, |
| 119 | indirect_info->ecf_flags, |
| 120 | prof_count, true); |
| 121 | *new_edge->indirect_info = *indirect_info; |
| 122 | } |
| 123 | } |
| 124 | else |
| 125 | { |
| 126 | new_edge = n->create_edge (callee, call_stmt, prof_count, true); |
| 127 | if (indirect_info) |
| 128 | { |
| 129 | new_edge->indirect_info |
| 130 | = ggc_cleared_alloc<cgraph_indirect_call_info> (); |
| 131 | *new_edge->indirect_info = *indirect_info; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | new_edge->inline_failed = inline_failed; |
| 136 | new_edge->indirect_inlining_edge = indirect_inlining_edge; |
| 137 | if (!call_stmt) |
| 138 | new_edge->lto_stmt_uid = stmt_uid; |
| 139 | new_edge->speculative_id = speculative_id; |
| 140 | /* Clone flags that depend on call_stmt availability manually. */ |
| 141 | new_edge->can_throw_external = can_throw_external; |
| 142 | new_edge->call_stmt_cannot_inline_p = call_stmt_cannot_inline_p; |
| 143 | new_edge->speculative = speculative; |
| 144 | new_edge->in_polymorphic_cdtor = in_polymorphic_cdtor; |
| 145 | |
| 146 | /* Update IPA profile. Local profiles need no updating in original. */ |
| 147 | if (update_original) |
| 148 | count = count.combine_with_ipa_count_within (count.ipa () |
| 149 | - new_edge->count.ipa (), |
| 150 | caller->count); |
| 151 | symtab->call_edge_duplication_hooks (this, new_edge); |
| 152 | return new_edge; |
| 153 | } |
| 154 | |
| 155 | /* Set flags of NEW_NODE and its decl. NEW_NODE is a newly created private |
| 156 | clone or its thunk. */ |
| 157 | |
| 158 | static void |
| 159 | set_new_clone_decl_and_node_flags (cgraph_node *new_node) |
| 160 | { |
| 161 | DECL_EXTERNAL (new_node->decl)((contains_struct_check ((new_node->decl), (TS_DECL_COMMON ), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 161, __FUNCTION__))->decl_common.decl_flag_1) = 0; |
| 162 | TREE_PUBLIC (new_node->decl)((new_node->decl)->base.public_flag) = 0; |
| 163 | DECL_COMDAT (new_node->decl)((contains_struct_check ((new_node->decl), (TS_DECL_WITH_VIS ), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 163, __FUNCTION__))->decl_with_vis.comdat_flag) = 0; |
| 164 | DECL_WEAK (new_node->decl)((contains_struct_check ((new_node->decl), (TS_DECL_WITH_VIS ), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 164, __FUNCTION__))->decl_with_vis.weak_flag) = 0; |
| 165 | DECL_VIRTUAL_P (new_node->decl)((contains_struct_check ((new_node->decl), (TS_DECL_COMMON ), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 165, __FUNCTION__))->decl_common.virtual_flag) = 0; |
| 166 | DECL_STATIC_CONSTRUCTOR (new_node->decl)((tree_check ((new_node->decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 166, __FUNCTION__, (FUNCTION_DECL)))->function_decl.static_ctor_flag ) = 0; |
| 167 | DECL_STATIC_DESTRUCTOR (new_node->decl)((tree_check ((new_node->decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 167, __FUNCTION__, (FUNCTION_DECL)))->function_decl.static_dtor_flag ) = 0; |
| 168 | DECL_SET_IS_OPERATOR_NEW (new_node->decl, 0)set_function_decl_type ((tree_check ((new_node->decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 168, __FUNCTION__, (FUNCTION_DECL))), OPERATOR_NEW, 0); |
| 169 | DECL_SET_IS_OPERATOR_DELETE (new_node->decl, 0)set_function_decl_type ((tree_check ((new_node->decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 169, __FUNCTION__, (FUNCTION_DECL))), OPERATOR_DELETE, 0); |
| 170 | DECL_IS_REPLACEABLE_OPERATOR (new_node->decl)((tree_check ((new_node->decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 170, __FUNCTION__, (FUNCTION_DECL)))->function_decl.replaceable_operator ) = 0; |
| 171 | |
| 172 | new_node->externally_visible = 0; |
| 173 | new_node->local = 1; |
| 174 | new_node->lowered = true; |
| 175 | } |
| 176 | |
| 177 | /* Duplicate thunk THUNK if necessary but make it to refer to NODE. |
| 178 | ARGS_TO_SKIP, if non-NULL, determines which parameters should be omitted. |
| 179 | Function can return NODE if no thunk is necessary, which can happen when |
| 180 | thunk is this_adjusting but we are removing this parameter. */ |
| 181 | |
| 182 | static cgraph_node * |
| 183 | duplicate_thunk_for_node (cgraph_node *thunk, cgraph_node *node) |
| 184 | { |
| 185 | cgraph_node *new_thunk, *thunk_of; |
| 186 | thunk_of = thunk->callees->callee->ultimate_alias_target (); |
| 187 | |
| 188 | if (thunk_of->thunk) |
| 189 | node = duplicate_thunk_for_node (thunk_of, node); |
| 190 | |
| 191 | if (!DECL_ARGUMENTS (thunk->decl)((tree_check ((thunk->decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 191, __FUNCTION__, (FUNCTION_DECL)))->function_decl.arguments )) |
| 192 | thunk->get_untransformed_body (); |
| 193 | |
| 194 | thunk_info *i = thunk_info::get (thunk); |
| 195 | cgraph_edge *cs; |
| 196 | for (cs = node->callers; cs; cs = cs->next_caller) |
| 197 | if (cs->caller->thunk) |
| 198 | { |
| 199 | thunk_info *i2 = thunk_info::get (cs->caller); |
| 200 | if (*i2 == *i) |
| 201 | return cs->caller; |
| 202 | } |
| 203 | |
| 204 | tree new_decl; |
| 205 | clone_info *info = clone_info::get (node); |
| 206 | if (info && info->param_adjustments) |
| 207 | { |
| 208 | /* We do not need to duplicate this_adjusting thunks if we have removed |
| 209 | this. */ |
| 210 | if (i->this_adjusting |
| 211 | && !info->param_adjustments->first_param_intact_p ()) |
| 212 | return node; |
| 213 | |
| 214 | new_decl = copy_node (thunk->decl); |
| 215 | ipa_param_body_adjustments body_adj (info->param_adjustments, |
| 216 | new_decl); |
| 217 | body_adj.modify_formal_parameters (); |
| 218 | } |
| 219 | else |
| 220 | new_decl = copy_node (thunk->decl); |
| 221 | |
| 222 | gcc_checking_assert (!DECL_STRUCT_FUNCTION (new_decl))((void)(!(!((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 222, __FUNCTION__, (FUNCTION_DECL)))->function_decl.f)) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 222, __FUNCTION__), 0 : 0)); |
| 223 | gcc_checking_assert (!DECL_INITIAL (new_decl))((void)(!(!((contains_struct_check ((new_decl), (TS_DECL_COMMON ), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 223, __FUNCTION__))->decl_common.initial)) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 223, __FUNCTION__), 0 : 0)); |
| 224 | gcc_checking_assert (!DECL_RESULT (new_decl))((void)(!(!((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 224, __FUNCTION__, (FUNCTION_DECL)))->decl_non_common.result )) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 224, __FUNCTION__), 0 : 0)); |
| 225 | gcc_checking_assert (!DECL_RTL_SET_P (new_decl))((void)(!(!(((tree_contains_struct[(((enum tree_code) (new_decl )->base.code))][(TS_DECL_WRTL)])) && (contains_struct_check ((new_decl), (TS_DECL_WRTL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 225, __FUNCTION__))->decl_with_rtl.rtl != nullptr)) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 225, __FUNCTION__), 0 : 0)); |
| 226 | |
| 227 | DECL_NAME (new_decl)((contains_struct_check ((new_decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 227, __FUNCTION__))->decl_minimal.name) = clone_function_name_numbered (thunk->decl, |
| 228 | "artificial_thunk"); |
| 229 | SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl))overwrite_decl_assembler_name (new_decl, ((contains_struct_check ((new_decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 229, __FUNCTION__))->decl_minimal.name)); |
| 230 | |
| 231 | /* We need to force DECL_IGNORED_P because the new thunk is created after |
| 232 | early debug was run. */ |
| 233 | DECL_IGNORED_P (new_decl)((contains_struct_check ((new_decl), (TS_DECL_COMMON), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 233, __FUNCTION__))->decl_common.ignored_flag) = 1; |
| 234 | |
| 235 | new_thunk = cgraph_node::create (new_decl); |
| 236 | set_new_clone_decl_and_node_flags (new_thunk); |
| 237 | new_thunk->definition = true; |
| 238 | new_thunk->can_change_signature = node->can_change_signature; |
| 239 | new_thunk->thunk = thunk->thunk; |
| 240 | new_thunk->unique_name = in_lto_pglobal_options.x_in_lto_p; |
| 241 | new_thunk->former_clone_of = thunk->decl; |
| 242 | if (info && info->param_adjustments) |
| 243 | clone_info::get_create (new_thunk)->param_adjustments |
| 244 | = info->param_adjustments; |
| 245 | new_thunk->unit_id = thunk->unit_id; |
| 246 | new_thunk->merged_comdat = thunk->merged_comdat; |
| 247 | new_thunk->merged_extern_inline = thunk->merged_extern_inline; |
| 248 | |
| 249 | cgraph_edge *e = new_thunk->create_edge (node, NULLnullptr, new_thunk->count); |
| 250 | symtab->call_edge_duplication_hooks (thunk->callees, e); |
| 251 | symtab->call_cgraph_duplication_hooks (thunk, new_thunk); |
| 252 | return new_thunk; |
| 253 | } |
| 254 | |
| 255 | /* If E does not lead to a thunk, simply redirect it to N. Otherwise create |
| 256 | one or more equivalent thunks for N and redirect E to the first in the |
| 257 | chain. Note that it is then necessary to call |
| 258 | n->expand_all_artificial_thunks once all callers are redirected. */ |
| 259 | |
| 260 | void |
| 261 | cgraph_edge::redirect_callee_duplicating_thunks (cgraph_node *n) |
| 262 | { |
| 263 | cgraph_node *orig_to = callee->ultimate_alias_target (); |
| 264 | if (orig_to->thunk) |
| 265 | n = duplicate_thunk_for_node (orig_to, n); |
| 266 | |
| 267 | redirect_callee (n); |
| 268 | } |
| 269 | |
| 270 | /* Call expand_thunk on all callers that are thunks and if analyze those nodes |
| 271 | that were expanded. */ |
| 272 | |
| 273 | void |
| 274 | cgraph_node::expand_all_artificial_thunks () |
| 275 | { |
| 276 | cgraph_edge *e; |
| 277 | for (e = callers; e;) |
| 278 | if (e->caller->thunk) |
| 279 | { |
| 280 | cgraph_node *thunk = e->caller; |
| 281 | |
| 282 | e = e->next_caller; |
| 283 | if (expand_thunk (thunk, false, false)) |
| 284 | { |
| 285 | thunk->thunk = false; |
| 286 | thunk->analyze (); |
| 287 | ipa_analyze_node (thunk); |
| 288 | inline_analyze_function (thunk); |
| 289 | } |
| 290 | thunk->expand_all_artificial_thunks (); |
| 291 | } |
| 292 | else |
| 293 | e = e->next_caller; |
| 294 | } |
| 295 | |
| 296 | void |
| 297 | dump_callgraph_transformation (const cgraph_node *original, |
| 298 | const cgraph_node *clone, |
| 299 | const char *suffix) |
| 300 | { |
| 301 | if (symtab->ipa_clones_dump_file) |
| 302 | { |
| 303 | fprintf (symtab->ipa_clones_dump_file, |
| 304 | "Callgraph clone;%s;%d;%s;%d;%d;%s;%d;%s;%d;%d;%s\n", |
| 305 | original->asm_name (), original->order, |
| 306 | DECL_SOURCE_FILE (original->decl)((expand_location (((contains_struct_check ((original->decl ), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 306, __FUNCTION__))->decl_minimal.locus))).file), |
| 307 | DECL_SOURCE_LINE (original->decl)((expand_location (((contains_struct_check ((original->decl ), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 307, __FUNCTION__))->decl_minimal.locus))).line), |
| 308 | DECL_SOURCE_COLUMN (original->decl)((expand_location (((contains_struct_check ((original->decl ), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 308, __FUNCTION__))->decl_minimal.locus))).column), clone->asm_name (), |
| 309 | clone->order, DECL_SOURCE_FILE (clone->decl)((expand_location (((contains_struct_check ((clone->decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 309, __FUNCTION__))->decl_minimal.locus))).file), |
| 310 | DECL_SOURCE_LINE (clone->decl)((expand_location (((contains_struct_check ((clone->decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 310, __FUNCTION__))->decl_minimal.locus))).line), DECL_SOURCE_COLUMN (clone->decl)((expand_location (((contains_struct_check ((clone->decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 310, __FUNCTION__))->decl_minimal.locus))).column), |
| 311 | suffix); |
| 312 | |
| 313 | symtab->cloned_nodes.add (original); |
| 314 | symtab->cloned_nodes.add (clone); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | /* Turn profile of N to local profile. */ |
| 319 | |
| 320 | static void |
| 321 | localize_profile (cgraph_node *n) |
| 322 | { |
| 323 | n->count = n->count.guessed_local (); |
| 324 | for (cgraph_edge *e = n->callees; e; e=e->next_callee) |
| 325 | { |
| 326 | e->count = e->count.guessed_local (); |
| 327 | if (!e->inline_failed) |
| 328 | localize_profile (e->callee); |
| 329 | } |
| 330 | for (cgraph_edge *e = n->indirect_calls; e; e=e->next_callee) |
| 331 | e->count = e->count.guessed_local (); |
| 332 | } |
| 333 | |
| 334 | /* Create node representing clone of N executed COUNT times. Decrease |
| 335 | the execution counts from original node too. |
| 336 | The new clone will have decl set to DECL that may or may not be the same |
| 337 | as decl of N. |
| 338 | |
| 339 | When UPDATE_ORIGINAL is true, the counts are subtracted from the original |
| 340 | function's profile to reflect the fact that part of execution is handled |
| 341 | by node. |
| 342 | When CALL_DUPLICATION_HOOK is true, the ipa passes are acknowledged about |
| 343 | the new clone. Otherwise the caller is responsible for doing so later. |
| 344 | |
| 345 | If the new node is being inlined into another one, NEW_INLINED_TO should be |
| 346 | the outline function the new one is (even indirectly) inlined to. All hooks |
| 347 | will see this in node's inlined_to, when invoked. Can be NULL if the |
| 348 | node is not inlined. |
| 349 | |
| 350 | If PARAM_ADJUSTMENTS is non-NULL, the parameter manipulation information |
| 351 | will be overwritten by the new structure. Otherwise the new node will |
| 352 | share parameter manipulation information with the original node. */ |
| 353 | |
| 354 | cgraph_node * |
| 355 | cgraph_node::create_clone (tree new_decl, profile_count prof_count, |
| 356 | bool update_original, |
| 357 | vec<cgraph_edge *> redirect_callers, |
| 358 | bool call_duplication_hook, |
| 359 | cgraph_node *new_inlined_to, |
| 360 | ipa_param_adjustments *param_adjustments, |
| 361 | const char *suffix) |
| 362 | { |
| 363 | cgraph_node *new_node = symtab->create_empty (); |
| 364 | cgraph_edge *e; |
| 365 | unsigned i; |
| 366 | profile_count old_count = count; |
| 367 | bool nonzero = count.ipa ().nonzero_p (); |
| 368 | |
| 369 | if (new_inlined_to) |
| 370 | dump_callgraph_transformation (this, new_inlined_to, "inlining to"); |
| 371 | |
| 372 | /* When inlining we scale precisely to prof_count, when cloning we can |
| 373 | preserve local profile. */ |
| 374 | if (!new_inlined_to) |
| 375 | prof_count = count.combine_with_ipa_count (prof_count); |
| 376 | new_node->count = prof_count; |
| 377 | |
| 378 | /* Update IPA profile. Local profiles need no updating in original. */ |
| 379 | if (update_original) |
| 380 | { |
| 381 | if (inlined_to) |
| 382 | count = count.combine_with_ipa_count_within (count.ipa () |
| 383 | - prof_count.ipa (), |
| 384 | inlined_to->count); |
| 385 | else |
| 386 | count = count.combine_with_ipa_count (count.ipa () - prof_count.ipa ()); |
| 387 | } |
| 388 | new_node->decl = new_decl; |
| 389 | new_node->register_symbol (); |
| 390 | new_node->lto_file_data = lto_file_data; |
| 391 | new_node->analyzed = analyzed; |
| 392 | new_node->definition = definition; |
| 393 | new_node->versionable = versionable; |
| 394 | new_node->can_change_signature = can_change_signature; |
| 395 | new_node->redefined_extern_inline = redefined_extern_inline; |
| 396 | new_node->tm_may_enter_irr = tm_may_enter_irr; |
| 397 | new_node->externally_visible = false; |
| 398 | new_node->no_reorder = no_reorder; |
| 399 | new_node->local = true; |
| 400 | new_node->inlined_to = new_inlined_to; |
| 401 | new_node->rtl = rtl; |
| 402 | new_node->frequency = frequency; |
| 403 | new_node->tp_first_run = tp_first_run; |
| 404 | new_node->tm_clone = tm_clone; |
| 405 | new_node->icf_merged = icf_merged; |
| 406 | new_node->thunk = thunk; |
| 407 | new_node->unit_id = unit_id; |
| 408 | new_node->merged_comdat = merged_comdat; |
| 409 | new_node->merged_extern_inline = merged_extern_inline; |
| 410 | clone_info *info = clone_info::get (this); |
| 411 | |
| 412 | if (param_adjustments) |
| 413 | clone_info::get_create (new_node)->param_adjustments = param_adjustments; |
| 414 | else if (info && info->param_adjustments) |
| 415 | clone_info::get_create (new_node)->param_adjustments |
| 416 | = info->param_adjustments; |
| 417 | if (info && info->performed_splits) |
| 418 | clone_info::get_create (new_node)->performed_splits |
| 419 | = vec_safe_copy (info->performed_splits); |
| 420 | new_node->split_part = split_part; |
| 421 | |
| 422 | FOR_EACH_VEC_ELT (redirect_callers, i, e)for (i = 0; (redirect_callers).iterate ((i), &(e)); ++(i) ) |
| 423 | { |
| 424 | /* Redirect calls to the old version node to point to its new |
| 425 | version. The only exception is when the edge was proved to |
| 426 | be unreachable during the cloning procedure. */ |
| 427 | if (!e->callee |
| 428 | || !fndecl_built_in_p (e->callee->decl, BUILT_IN_UNREACHABLE)) |
| 429 | e->redirect_callee_duplicating_thunks (new_node); |
| 430 | } |
| 431 | new_node->expand_all_artificial_thunks (); |
| 432 | |
| 433 | for (e = callees;e; e=e->next_callee) |
| 434 | e->clone (new_node, e->call_stmt, e->lto_stmt_uid, new_node->count, old_count, |
| 435 | update_original); |
| 436 | |
| 437 | for (e = indirect_calls; e; e = e->next_callee) |
| 438 | e->clone (new_node, e->call_stmt, e->lto_stmt_uid, |
| 439 | new_node->count, old_count, update_original); |
| 440 | new_node->clone_references (this); |
| 441 | |
| 442 | new_node->next_sibling_clone = clones; |
| 443 | if (clones) |
| 444 | clones->prev_sibling_clone = new_node; |
| 445 | clones = new_node; |
| 446 | new_node->clone_of = this; |
| 447 | |
| 448 | if (call_duplication_hook) |
| 449 | symtab->call_cgraph_duplication_hooks (this, new_node); |
| 450 | /* With partial train run we do not want to assume that original's |
| 451 | count is zero whenever we redurect all executed edges to clone. |
| 452 | Simply drop profile to local one in this case. */ |
| 453 | if (update_original |
| 454 | && opt_for_fn (decl, flag_profile_partial_training)(opts_for_fn (decl)->x_flag_profile_partial_training) |
| 455 | && nonzero |
| 456 | && count.ipa_p () |
| 457 | && !count.ipa ().nonzero_p () |
| 458 | && !inlined_to) |
| 459 | localize_profile (this); |
| 460 | |
| 461 | if (!new_inlined_to) |
| 462 | dump_callgraph_transformation (this, new_node, suffix); |
| 463 | |
| 464 | return new_node; |
| 465 | } |
| 466 | |
| 467 | static GTY(()) hash_map<const char *, unsigned> *clone_fn_ids; |
| 468 | |
| 469 | /* Return a new assembler name for a clone of decl named NAME. Apart |
| 470 | from the string SUFFIX, the new name will end with a unique (for |
| 471 | each NAME) unspecified number. If clone numbering is not needed |
| 472 | then the two argument clone_function_name should be used instead. |
| 473 | Should not be called directly except for by |
| 474 | lto-partition.c:privatize_symbol_name_1. */ |
| 475 | |
| 476 | tree |
| 477 | clone_function_name_numbered (const char *name, const char *suffix) |
| 478 | { |
| 479 | /* Initialize the function->counter mapping the first time it's |
| 480 | needed. */ |
| 481 | if (!clone_fn_ids) |
| 482 | clone_fn_ids = hash_map<const char *, unsigned int>::create_ggc (64); |
| 483 | unsigned int &suffix_counter = clone_fn_ids->get_or_insert ( |
| 484 | IDENTIFIER_POINTER (get_identifier (name))((const char *) (tree_check (((__builtin_constant_p (name) ? get_identifier_with_length ((name), strlen (name)) : get_identifier (name))), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 484, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str )); |
| 485 | return clone_function_name (name, suffix, suffix_counter++); |
| 486 | } |
| 487 | |
| 488 | /* Return a new assembler name for a clone of DECL. Apart from string |
| 489 | SUFFIX, the new name will end with a unique (for each DECL |
| 490 | assembler name) unspecified number. If clone numbering is not |
| 491 | needed then the two argument clone_function_name should be used |
| 492 | instead. */ |
| 493 | |
| 494 | tree |
| 495 | clone_function_name_numbered (tree decl, const char *suffix) |
| 496 | { |
| 497 | tree name = DECL_ASSEMBLER_NAME (decl)decl_assembler_name (decl); |
| 498 | return clone_function_name_numbered (IDENTIFIER_POINTER (name)((const char *) (tree_check ((name), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 498, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), |
| 499 | suffix); |
| 500 | } |
| 501 | |
| 502 | /* Return a new assembler name for a clone of decl named NAME. Apart |
| 503 | from the string SUFFIX, the new name will end with the specified |
| 504 | NUMBER. If clone numbering is not needed then the two argument |
| 505 | clone_function_name should be used instead. */ |
| 506 | |
| 507 | tree |
| 508 | clone_function_name (const char *name, const char *suffix, |
| 509 | unsigned long number) |
| 510 | { |
| 511 | size_t len = strlen (name); |
| 512 | char *tmp_name, *prefix; |
| 513 | |
| 514 | prefix = XALLOCAVEC (char, len + strlen (suffix) + 2)((char *) __builtin_alloca(sizeof (char) * (len + strlen (suffix ) + 2))); |
| 515 | memcpy (prefix, name, len); |
| 516 | strcpy (prefix + len + 1, suffix); |
| 517 | prefix[len] = symbol_table::symbol_suffix_separator (); |
| 518 | ASM_FORMAT_PRIVATE_NAME (tmp_name, prefix, number)do { const char *const name_ = (prefix); char *const output_ = (tmp_name) = (char *) __builtin_alloca(strlen (name_) + 32); sprintf (output_, "%s.%lu", name_, (unsigned long)(number)); } while (0); |
| 519 | return get_identifier (tmp_name)(__builtin_constant_p (tmp_name) ? get_identifier_with_length ((tmp_name), strlen (tmp_name)) : get_identifier (tmp_name)); |
| 520 | } |
| 521 | |
| 522 | /* Return a new assembler name for a clone of DECL. Apart from the |
| 523 | string SUFFIX, the new name will end with the specified NUMBER. If |
| 524 | clone numbering is not needed then the two argument |
| 525 | clone_function_name should be used instead. */ |
| 526 | |
| 527 | tree |
| 528 | clone_function_name (tree decl, const char *suffix, |
| 529 | unsigned long number) |
| 530 | { |
| 531 | return clone_function_name ( |
| 532 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))((const char *) (tree_check ((decl_assembler_name (decl)), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 532, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), suffix, number); |
| 533 | } |
| 534 | |
| 535 | /* Return a new assembler name ending with the string SUFFIX for a |
| 536 | clone of DECL. */ |
| 537 | |
| 538 | tree |
| 539 | clone_function_name (tree decl, const char *suffix) |
| 540 | { |
| 541 | tree identifier = DECL_ASSEMBLER_NAME (decl)decl_assembler_name (decl); |
| 542 | /* For consistency this needs to behave the same way as |
| 543 | ASM_FORMAT_PRIVATE_NAME does, but without the final number |
| 544 | suffix. */ |
| 545 | char *separator = XALLOCAVEC (char, 2)((char *) __builtin_alloca(sizeof (char) * (2))); |
| 546 | separator[0] = symbol_table::symbol_suffix_separator (); |
| 547 | separator[1] = 0; |
| 548 | #if defined (NO_DOT_IN_LABEL) && defined (NO_DOLLAR_IN_LABEL) |
| 549 | const char *prefix = "__"; |
| 550 | #else |
| 551 | const char *prefix = ""; |
| 552 | #endif |
| 553 | char *result = ACONCAT ((prefix,(libiberty_concat_ptr = (char *) __builtin_alloca(concat_length (prefix, ((const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0) + 1), concat_copy2 (prefix, ( (const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0)) |
| 554 | IDENTIFIER_POINTER (identifier),(libiberty_concat_ptr = (char *) __builtin_alloca(concat_length (prefix, ((const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0) + 1), concat_copy2 (prefix, ( (const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0)) |
| 555 | separator,(libiberty_concat_ptr = (char *) __builtin_alloca(concat_length (prefix, ((const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0) + 1), concat_copy2 (prefix, ( (const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0)) |
| 556 | suffix,(libiberty_concat_ptr = (char *) __builtin_alloca(concat_length (prefix, ((const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0) + 1), concat_copy2 (prefix, ( (const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0)) |
| 557 | (char*)0))(libiberty_concat_ptr = (char *) __builtin_alloca(concat_length (prefix, ((const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0) + 1), concat_copy2 (prefix, ( (const char *) (tree_check ((identifier), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 554, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), separator, suffix, (char*)0)); |
| 558 | return get_identifier (result)(__builtin_constant_p (result) ? get_identifier_with_length ( (result), strlen (result)) : get_identifier (result)); |
| 559 | } |
| 560 | |
| 561 | |
| 562 | /* Create callgraph node clone with new declaration. The actual body will be |
| 563 | copied later at compilation stage. The name of the new clone will be |
| 564 | constructed from the name of the original node, SUFFIX and NUM_SUFFIX. |
| 565 | |
| 566 | TODO: after merging in ipa-sra use function call notes instead of args_to_skip |
| 567 | bitmap interface. |
| 568 | */ |
| 569 | cgraph_node * |
| 570 | cgraph_node::create_virtual_clone (vec<cgraph_edge *> redirect_callers, |
| 571 | vec<ipa_replace_map *, va_gc> *tree_map, |
| 572 | ipa_param_adjustments *param_adjustments, |
| 573 | const char * suffix, unsigned num_suffix) |
| 574 | { |
| 575 | tree old_decl = decl; |
| 576 | cgraph_node *new_node = NULLnullptr; |
| 577 | tree new_decl; |
| 578 | size_t len, i; |
| 579 | ipa_replace_map *map; |
| 580 | char *name; |
| 581 | |
| 582 | gcc_checking_assert (versionable)((void)(!(versionable) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 582, __FUNCTION__), 0 : 0)); |
| 583 | /* TODO: It would be nice if we could recognize that param_adjustments do not |
| 584 | actually perform any changes, but at the moment let's require it simply |
| 585 | does not exist. */ |
| 586 | gcc_assert (can_change_signature || !param_adjustments)((void)(!(can_change_signature || !param_adjustments) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 586, __FUNCTION__), 0 : 0)); |
| 587 | |
| 588 | /* Make a new FUNCTION_DECL tree node */ |
| 589 | if (!param_adjustments) |
| 590 | new_decl = copy_node (old_decl); |
| 591 | else |
| 592 | new_decl = param_adjustments->adjust_decl (old_decl); |
| 593 | |
| 594 | /* These pointers represent function body and will be populated only when clone |
| 595 | is materialized. */ |
| 596 | gcc_assert (new_decl != old_decl)((void)(!(new_decl != old_decl) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 596, __FUNCTION__), 0 : 0)); |
| 597 | DECL_STRUCT_FUNCTION (new_decl)((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 597, __FUNCTION__, (FUNCTION_DECL)))->function_decl.f) = NULLnullptr; |
| 598 | DECL_ARGUMENTS (new_decl)((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 598, __FUNCTION__, (FUNCTION_DECL)))->function_decl.arguments ) = NULLnullptr; |
| 599 | DECL_INITIAL (new_decl)((contains_struct_check ((new_decl), (TS_DECL_COMMON), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 599, __FUNCTION__))->decl_common.initial) = NULLnullptr; |
| 600 | DECL_RESULT (new_decl)((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 600, __FUNCTION__, (FUNCTION_DECL)))->decl_non_common.result ) = NULLnullptr; |
| 601 | /* We cannot do DECL_RESULT (new_decl) = NULL; here because of LTO partitioning |
| 602 | sometimes storing only clone decl instead of original. */ |
| 603 | |
| 604 | /* Generate a new name for the new version. */ |
| 605 | len = IDENTIFIER_LENGTH (DECL_NAME (old_decl))((tree_check ((((contains_struct_check ((old_decl), (TS_DECL_MINIMAL ), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 605, __FUNCTION__))->decl_minimal.name)), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 605, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.len ); |
| 606 | name = XALLOCAVEC (char, len + strlen (suffix) + 2)((char *) __builtin_alloca(sizeof (char) * (len + strlen (suffix ) + 2))); |
| 607 | memcpy (name, IDENTIFIER_POINTER (DECL_NAME (old_decl))((const char *) (tree_check ((((contains_struct_check ((old_decl ), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 607, __FUNCTION__))->decl_minimal.name)), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 607, __FUNCTION__, (IDENTIFIER_NODE)))->identifier.id.str ), len); |
| 608 | strcpy (name + len + 1, suffix); |
| 609 | name[len] = '.'; |
| 610 | DECL_NAME (new_decl)((contains_struct_check ((new_decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 610, __FUNCTION__))->decl_minimal.name) = get_identifier (name)(__builtin_constant_p (name) ? get_identifier_with_length ((name ), strlen (name)) : get_identifier (name)); |
| 611 | SET_DECL_ASSEMBLER_NAME (new_decl,overwrite_decl_assembler_name (new_decl, clone_function_name ( old_decl, suffix, num_suffix)) |
| 612 | clone_function_name (old_decl, suffix, num_suffix))overwrite_decl_assembler_name (new_decl, clone_function_name ( old_decl, suffix, num_suffix)); |
| 613 | SET_DECL_RTL (new_decl, NULL)set_decl_rtl (new_decl, nullptr); |
| 614 | |
| 615 | new_node = create_clone (new_decl, count, false, |
| 616 | redirect_callers, false, NULLnullptr, param_adjustments, |
| 617 | suffix); |
| 618 | |
| 619 | /* Update the properties. |
| 620 | Make clone visible only within this translation unit. Make sure |
| 621 | that is not weak also. |
| 622 | ??? We cannot use COMDAT linkage because there is no |
| 623 | ABI support for this. */ |
| 624 | set_new_clone_decl_and_node_flags (new_node); |
| 625 | new_node->ipcp_clone = ipcp_clone; |
| 626 | if (tree_map) |
| 627 | clone_info::get_create (new_node)->tree_map = tree_map; |
| 628 | if (!implicit_section) |
| 629 | new_node->set_section (*this); |
| 630 | |
| 631 | /* Clones of global symbols or symbols with unique names are unique. */ |
| 632 | if ((TREE_PUBLIC (old_decl)((old_decl)->base.public_flag) |
| 633 | && !DECL_EXTERNAL (old_decl)((contains_struct_check ((old_decl), (TS_DECL_COMMON), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 633, __FUNCTION__))->decl_common.decl_flag_1) |
| 634 | && !DECL_WEAK (old_decl)((contains_struct_check ((old_decl), (TS_DECL_WITH_VIS), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 634, __FUNCTION__))->decl_with_vis.weak_flag) |
| 635 | && !DECL_COMDAT (old_decl)((contains_struct_check ((old_decl), (TS_DECL_WITH_VIS), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 635, __FUNCTION__))->decl_with_vis.comdat_flag)) |
| 636 | || in_lto_pglobal_options.x_in_lto_p) |
| 637 | new_node->unique_name = true; |
| 638 | FOR_EACH_VEC_SAFE_ELT (tree_map, i, map)for (i = 0; vec_safe_iterate ((tree_map), (i), &(map)); ++ (i)) |
| 639 | new_node->maybe_create_reference (map->new_tree, NULLnullptr); |
| 640 | |
| 641 | if (ipa_transforms_to_apply.exists ()) |
| 642 | new_node->ipa_transforms_to_apply |
| 643 | = ipa_transforms_to_apply.copy (); |
| 644 | |
| 645 | symtab->call_cgraph_duplication_hooks (this, new_node); |
| 646 | |
| 647 | return new_node; |
| 648 | } |
| 649 | |
| 650 | /* callgraph node being removed from symbol table; see if its entry can be |
| 651 | replaced by other inline clone. |
| 652 | INFO is clone info to attach to the new root. */ |
| 653 | cgraph_node * |
| 654 | cgraph_node::find_replacement (clone_info *info) |
| 655 | { |
| 656 | cgraph_node *next_inline_clone, *replacement; |
| 657 | |
| 658 | for (next_inline_clone = clones; |
| 659 | next_inline_clone |
| 660 | && next_inline_clone->decl != decl; |
| 661 | next_inline_clone = next_inline_clone->next_sibling_clone) |
| 662 | ; |
| 663 | |
| 664 | /* If there is inline clone of the node being removed, we need |
| 665 | to put it into the position of removed node and reorganize all |
| 666 | other clones to be based on it. */ |
| 667 | if (next_inline_clone) |
| 668 | { |
| 669 | cgraph_node *n; |
| 670 | cgraph_node *new_clones; |
| 671 | |
| 672 | replacement = next_inline_clone; |
| 673 | |
| 674 | /* Unlink inline clone from the list of clones of removed node. */ |
| 675 | if (next_inline_clone->next_sibling_clone) |
| 676 | next_inline_clone->next_sibling_clone->prev_sibling_clone |
| 677 | = next_inline_clone->prev_sibling_clone; |
| 678 | if (next_inline_clone->prev_sibling_clone) |
| 679 | { |
| 680 | gcc_assert (clones != next_inline_clone)((void)(!(clones != next_inline_clone) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 680, __FUNCTION__), 0 : 0)); |
| 681 | next_inline_clone->prev_sibling_clone->next_sibling_clone |
| 682 | = next_inline_clone->next_sibling_clone; |
| 683 | } |
| 684 | else |
| 685 | { |
| 686 | gcc_assert (clones == next_inline_clone)((void)(!(clones == next_inline_clone) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 686, __FUNCTION__), 0 : 0)); |
| 687 | clones = next_inline_clone->next_sibling_clone; |
| 688 | } |
| 689 | |
| 690 | new_clones = clones; |
| 691 | clones = NULLnullptr; |
| 692 | |
| 693 | /* Copy clone info. */ |
| 694 | if (info) |
| 695 | *clone_info::get_create (next_inline_clone) = *info; |
| 696 | |
| 697 | /* Now place it into clone tree at same level at NODE. */ |
| 698 | next_inline_clone->clone_of = clone_of; |
| 699 | next_inline_clone->prev_sibling_clone = NULLnullptr; |
| 700 | next_inline_clone->next_sibling_clone = NULLnullptr; |
| 701 | if (clone_of) |
| 702 | { |
| 703 | if (clone_of->clones) |
| 704 | clone_of->clones->prev_sibling_clone = next_inline_clone; |
| 705 | next_inline_clone->next_sibling_clone = clone_of->clones; |
| 706 | clone_of->clones = next_inline_clone; |
| 707 | } |
| 708 | |
| 709 | /* Merge the clone list. */ |
| 710 | if (new_clones) |
| 711 | { |
| 712 | if (!next_inline_clone->clones) |
| 713 | next_inline_clone->clones = new_clones; |
| 714 | else |
| 715 | { |
| 716 | n = next_inline_clone->clones; |
| 717 | while (n->next_sibling_clone) |
| 718 | n = n->next_sibling_clone; |
| 719 | n->next_sibling_clone = new_clones; |
| 720 | new_clones->prev_sibling_clone = n; |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | /* Update clone_of pointers. */ |
| 725 | n = new_clones; |
| 726 | while (n) |
| 727 | { |
| 728 | n->clone_of = next_inline_clone; |
| 729 | n = n->next_sibling_clone; |
| 730 | } |
| 731 | |
| 732 | /* Update order in order to be able to find a LTO section |
| 733 | with function body. */ |
| 734 | replacement->order = order; |
| 735 | |
| 736 | return replacement; |
| 737 | } |
| 738 | else |
| 739 | return NULLnullptr; |
| 740 | } |
| 741 | |
| 742 | /* Like cgraph_set_call_stmt but walk the clone tree and update all |
| 743 | clones sharing the same function body. |
| 744 | When WHOLE_SPECULATIVE_EDGES is true, all three components of |
| 745 | speculative edge gets updated. Otherwise we update only direct |
| 746 | call. */ |
| 747 | |
| 748 | void |
| 749 | cgraph_node::set_call_stmt_including_clones (gimple *old_stmt, |
| 750 | gcall *new_stmt, |
| 751 | bool update_speculative) |
| 752 | { |
| 753 | cgraph_node *node; |
| 754 | cgraph_edge *master_edge = get_edge (old_stmt); |
| 755 | |
| 756 | if (master_edge) |
| 757 | cgraph_edge::set_call_stmt (master_edge, new_stmt, update_speculative); |
| 758 | |
| 759 | node = clones; |
| 760 | if (node) |
| 761 | while (node != this) |
| 762 | { |
| 763 | cgraph_edge *edge = node->get_edge (old_stmt); |
| 764 | if (edge) |
| 765 | { |
| 766 | edge = cgraph_edge::set_call_stmt (edge, new_stmt, |
| 767 | update_speculative); |
| 768 | /* If UPDATE_SPECULATIVE is false, it means that we are turning |
| 769 | speculative call into a real code sequence. Update the |
| 770 | callgraph edges. */ |
| 771 | if (edge->speculative && !update_speculative) |
| 772 | { |
| 773 | cgraph_edge *indirect = edge->speculative_call_indirect_edge (); |
| 774 | |
| 775 | for (cgraph_edge *next, *direct |
| 776 | = edge->first_speculative_call_target (); |
| 777 | direct; |
| 778 | direct = next) |
| 779 | { |
| 780 | next = direct->next_speculative_call_target (); |
| 781 | direct->speculative_call_target_ref ()->speculative = false; |
| 782 | direct->speculative = false; |
| 783 | } |
| 784 | indirect->speculative = false; |
| 785 | } |
| 786 | } |
| 787 | if (node->clones) |
| 788 | node = node->clones; |
| 789 | else if (node->next_sibling_clone) |
| 790 | node = node->next_sibling_clone; |
| 791 | else |
| 792 | { |
| 793 | while (node != this && !node->next_sibling_clone) |
| 794 | node = node->clone_of; |
| 795 | if (node != this) |
| 796 | node = node->next_sibling_clone; |
| 797 | } |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | /* Like cgraph_create_edge walk the clone tree and update all clones sharing |
| 802 | same function body. If clones already have edge for OLD_STMT; only |
| 803 | update the edge same way as cgraph_set_call_stmt_including_clones does. |
| 804 | |
| 805 | TODO: COUNT and LOOP_DEPTH should be properly distributed based on relative |
| 806 | frequencies of the clones. */ |
| 807 | |
| 808 | void |
| 809 | cgraph_node::create_edge_including_clones (cgraph_node *callee, |
| 810 | gimple *old_stmt, gcall *stmt, |
| 811 | profile_count count, |
| 812 | cgraph_inline_failed_t reason) |
| 813 | { |
| 814 | cgraph_node *node; |
| 815 | |
| 816 | if (!get_edge (stmt)) |
| 817 | { |
| 818 | cgraph_edge *edge = create_edge (callee, stmt, count); |
| 819 | edge->inline_failed = reason; |
| 820 | } |
| 821 | |
| 822 | node = clones; |
| 823 | if (node) |
| 824 | while (node != this) |
| 825 | /* Thunk clones do not get updated while copying inline function body. */ |
| 826 | if (!node->thunk) |
| 827 | { |
| 828 | cgraph_edge *edge = node->get_edge (old_stmt); |
| 829 | |
| 830 | /* It is possible that clones already contain the edge while |
| 831 | master didn't. Either we promoted indirect call into direct |
| 832 | call in the clone or we are processing clones of unreachable |
| 833 | master where edges has been removed. */ |
| 834 | if (edge) |
| 835 | edge = cgraph_edge::set_call_stmt (edge, stmt); |
Value stored to 'edge' is never read | |
| 836 | else if (! node->get_edge (stmt)) |
| 837 | { |
| 838 | edge = node->create_edge (callee, stmt, count); |
| 839 | edge->inline_failed = reason; |
| 840 | } |
| 841 | |
| 842 | if (node->clones) |
| 843 | node = node->clones; |
| 844 | else if (node->next_sibling_clone) |
| 845 | node = node->next_sibling_clone; |
| 846 | else |
| 847 | { |
| 848 | while (node != this && !node->next_sibling_clone) |
| 849 | node = node->clone_of; |
| 850 | if (node != this) |
| 851 | node = node->next_sibling_clone; |
| 852 | } |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | /* Remove the node from cgraph and all inline clones inlined into it. |
| 857 | Skip however removal of FORBIDDEN_NODE and return true if it needs to be |
| 858 | removed. This allows to call the function from outer loop walking clone |
| 859 | tree. */ |
| 860 | |
| 861 | bool |
| 862 | cgraph_node::remove_symbol_and_inline_clones (cgraph_node *forbidden_node) |
| 863 | { |
| 864 | cgraph_edge *e, *next; |
| 865 | bool found = false; |
| 866 | |
| 867 | if (this == forbidden_node) |
| 868 | { |
| 869 | cgraph_edge::remove (callers); |
| 870 | return true; |
| 871 | } |
| 872 | for (e = callees; e; e = next) |
| 873 | { |
| 874 | next = e->next_callee; |
| 875 | if (!e->inline_failed) |
| 876 | found |= e->callee->remove_symbol_and_inline_clones (forbidden_node); |
| 877 | } |
| 878 | remove (); |
| 879 | return found; |
| 880 | } |
| 881 | |
| 882 | /* The edges representing the callers of the NEW_VERSION node were |
| 883 | fixed by cgraph_function_versioning (), now the call_expr in their |
| 884 | respective tree code should be updated to call the NEW_VERSION. */ |
| 885 | |
| 886 | static void |
| 887 | update_call_expr (cgraph_node *new_version) |
| 888 | { |
| 889 | cgraph_edge *e; |
| 890 | |
| 891 | gcc_assert (new_version)((void)(!(new_version) ? fancy_abort ("/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 891, __FUNCTION__), 0 : 0)); |
| 892 | |
| 893 | /* Update the call expr on the edges to call the new version. */ |
| 894 | for (e = new_version->callers; e; e = e->next_caller) |
| 895 | { |
| 896 | function *inner_function = DECL_STRUCT_FUNCTION (e->caller->decl)((tree_check ((e->caller->decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 896, __FUNCTION__, (FUNCTION_DECL)))->function_decl.f); |
| 897 | gimple_call_set_fndecl (e->call_stmt, new_version->decl); |
| 898 | maybe_clean_eh_stmt_fn (inner_function, e->call_stmt); |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | |
| 903 | /* Create a new cgraph node which is the new version of |
| 904 | callgraph node. REDIRECT_CALLERS holds the callers |
| 905 | edges which should be redirected to point to |
| 906 | NEW_VERSION. ALL the callees edges of the node |
| 907 | are cloned to the new version node. Return the new |
| 908 | version node. |
| 909 | |
| 910 | If non-NULL BLOCK_TO_COPY determine what basic blocks |
| 911 | was copied to prevent duplications of calls that are dead |
| 912 | in the clone. */ |
| 913 | |
| 914 | cgraph_node * |
| 915 | cgraph_node::create_version_clone (tree new_decl, |
| 916 | vec<cgraph_edge *> redirect_callers, |
| 917 | bitmap bbs_to_copy, |
| 918 | const char *suffix) |
| 919 | { |
| 920 | cgraph_node *new_version; |
| 921 | cgraph_edge *e; |
| 922 | unsigned i; |
| 923 | |
| 924 | new_version = cgraph_node::create (new_decl); |
| 925 | |
| 926 | new_version->analyzed = analyzed; |
| 927 | new_version->definition = definition; |
| 928 | new_version->local = local; |
| 929 | new_version->externally_visible = false; |
| 930 | new_version->no_reorder = no_reorder; |
| 931 | new_version->local = new_version->definition; |
| 932 | new_version->inlined_to = inlined_to; |
| 933 | new_version->rtl = rtl; |
| 934 | new_version->count = count; |
| 935 | new_version->unit_id = unit_id; |
| 936 | new_version->merged_comdat = merged_comdat; |
| 937 | new_version->merged_extern_inline = merged_extern_inline; |
| 938 | |
| 939 | for (e = callees; e; e=e->next_callee) |
| 940 | if (!bbs_to_copy |
| 941 | || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index)) |
| 942 | e->clone (new_version, e->call_stmt, |
| 943 | e->lto_stmt_uid, count, count, |
| 944 | true); |
| 945 | for (e = indirect_calls; e; e=e->next_callee) |
| 946 | if (!bbs_to_copy |
| 947 | || bitmap_bit_p (bbs_to_copy, gimple_bb (e->call_stmt)->index)) |
| 948 | e->clone (new_version, e->call_stmt, |
| 949 | e->lto_stmt_uid, count, count, |
| 950 | true); |
| 951 | FOR_EACH_VEC_ELT (redirect_callers, i, e)for (i = 0; (redirect_callers).iterate ((i), &(e)); ++(i) ) |
| 952 | { |
| 953 | /* Redirect calls to the old version node to point to its new |
| 954 | version. */ |
| 955 | e->redirect_callee (new_version); |
| 956 | } |
| 957 | |
| 958 | dump_callgraph_transformation (this, new_version, suffix); |
| 959 | |
| 960 | return new_version; |
| 961 | } |
| 962 | |
| 963 | /* Perform function versioning. |
| 964 | Function versioning includes copying of the tree and |
| 965 | a callgraph update (creating a new cgraph node and updating |
| 966 | its callees and callers). |
| 967 | |
| 968 | REDIRECT_CALLERS varray includes the edges to be redirected |
| 969 | to the new version. |
| 970 | |
| 971 | TREE_MAP is a mapping of tree nodes we want to replace with |
| 972 | new ones (according to results of prior analysis). |
| 973 | |
| 974 | If non-NULL ARGS_TO_SKIP determine function parameters to remove |
| 975 | from new version. |
| 976 | If SKIP_RETURN is true, the new version will return void. |
| 977 | If non-NULL BLOCK_TO_COPY determine what basic blocks to copy. |
| 978 | If non_NULL NEW_ENTRY determine new entry BB of the clone. |
| 979 | |
| 980 | If TARGET_ATTRIBUTES is non-null, when creating a new declaration, |
| 981 | add the attributes to DECL_ATTRIBUTES. And call valid_attribute_p |
| 982 | that will promote value of the attribute DECL_FUNCTION_SPECIFIC_TARGET |
| 983 | of the declaration. |
| 984 | |
| 985 | Return the new version's cgraph node. */ |
| 986 | |
| 987 | cgraph_node * |
| 988 | cgraph_node::create_version_clone_with_body |
| 989 | (vec<cgraph_edge *> redirect_callers, |
| 990 | vec<ipa_replace_map *, va_gc> *tree_map, |
| 991 | ipa_param_adjustments *param_adjustments, |
| 992 | bitmap bbs_to_copy, basic_block new_entry_block, const char *suffix, |
| 993 | tree target_attributes) |
| 994 | { |
| 995 | tree old_decl = decl; |
| 996 | cgraph_node *new_version_node = NULLnullptr; |
| 997 | tree new_decl; |
| 998 | |
| 999 | if (!tree_versionable_function_p (old_decl)) |
| 1000 | return NULLnullptr; |
| 1001 | |
| 1002 | /* TODO: Restore an assert that we do not change signature if |
| 1003 | can_change_signature is false. We cannot just check that |
| 1004 | param_adjustments is NULL because unfortunately ipa-split removes return |
| 1005 | values from such functions. */ |
| 1006 | |
| 1007 | /* Make a new FUNCTION_DECL tree node for the new version. */ |
| 1008 | if (param_adjustments) |
| 1009 | new_decl = param_adjustments->adjust_decl (old_decl); |
| 1010 | else |
| 1011 | new_decl = copy_node (old_decl); |
| 1012 | |
| 1013 | /* Generate a new name for the new version. */ |
| 1014 | DECL_NAME (new_decl)((contains_struct_check ((new_decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1014, __FUNCTION__))->decl_minimal.name) = clone_function_name_numbered (old_decl, suffix); |
| 1015 | SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl))overwrite_decl_assembler_name (new_decl, ((contains_struct_check ((new_decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1015, __FUNCTION__))->decl_minimal.name)); |
| 1016 | SET_DECL_RTL (new_decl, NULL)set_decl_rtl (new_decl, nullptr); |
| 1017 | |
| 1018 | DECL_VIRTUAL_P (new_decl)((contains_struct_check ((new_decl), (TS_DECL_COMMON), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1018, __FUNCTION__))->decl_common.virtual_flag) = 0; |
| 1019 | |
| 1020 | if (target_attributes) |
| 1021 | { |
| 1022 | DECL_ATTRIBUTES (new_decl)((contains_struct_check ((new_decl), (TS_DECL_COMMON), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1022, __FUNCTION__))->decl_common.attributes) = target_attributes; |
| 1023 | |
| 1024 | location_t saved_loc = input_location; |
| 1025 | tree v = TREE_VALUE (target_attributes)((tree_check ((target_attributes), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1025, __FUNCTION__, (TREE_LIST)))->list.value); |
| 1026 | input_location = DECL_SOURCE_LOCATION (new_decl)((contains_struct_check ((new_decl), (TS_DECL_MINIMAL), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1026, __FUNCTION__))->decl_minimal.locus); |
| 1027 | bool r = targetm.target_option.valid_attribute_p (new_decl, NULLnullptr, v, 1); |
| 1028 | input_location = saved_loc; |
| 1029 | if (!r) |
| 1030 | return NULLnullptr; |
| 1031 | } |
| 1032 | |
| 1033 | /* When the old decl was a con-/destructor make sure the clone isn't. */ |
| 1034 | DECL_STATIC_CONSTRUCTOR (new_decl)((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1034, __FUNCTION__, (FUNCTION_DECL)))->function_decl.static_ctor_flag ) = 0; |
| 1035 | DECL_STATIC_DESTRUCTOR (new_decl)((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1035, __FUNCTION__, (FUNCTION_DECL)))->function_decl.static_dtor_flag ) = 0; |
| 1036 | DECL_SET_IS_OPERATOR_NEW (new_decl, 0)set_function_decl_type ((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1036, __FUNCTION__, (FUNCTION_DECL))), OPERATOR_NEW, 0); |
| 1037 | DECL_SET_IS_OPERATOR_DELETE (new_decl, 0)set_function_decl_type ((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1037, __FUNCTION__, (FUNCTION_DECL))), OPERATOR_DELETE, 0); |
| 1038 | DECL_IS_REPLACEABLE_OPERATOR (new_decl)((tree_check ((new_decl), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1038, __FUNCTION__, (FUNCTION_DECL)))->function_decl.replaceable_operator ) = 0; |
| 1039 | |
| 1040 | /* Create the new version's call-graph node. |
| 1041 | and update the edges of the new node. */ |
| 1042 | new_version_node = create_version_clone (new_decl, redirect_callers, |
| 1043 | bbs_to_copy, suffix); |
| 1044 | |
| 1045 | if (ipa_transforms_to_apply.exists ()) |
| 1046 | new_version_node->ipa_transforms_to_apply |
| 1047 | = ipa_transforms_to_apply.copy (); |
| 1048 | /* Copy the OLD_VERSION_NODE function tree to the new version. */ |
| 1049 | tree_function_versioning (old_decl, new_decl, tree_map, param_adjustments, |
| 1050 | false, bbs_to_copy, new_entry_block); |
| 1051 | |
| 1052 | /* Update the new version's properties. |
| 1053 | Make The new version visible only within this translation unit. Make sure |
| 1054 | that is not weak also. |
| 1055 | ??? We cannot use COMDAT linkage because there is no |
| 1056 | ABI support for this. */ |
| 1057 | new_version_node->make_decl_local (); |
| 1058 | DECL_VIRTUAL_P (new_version_node->decl)((contains_struct_check ((new_version_node->decl), (TS_DECL_COMMON ), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1058, __FUNCTION__))->decl_common.virtual_flag) = 0; |
| 1059 | new_version_node->externally_visible = 0; |
| 1060 | new_version_node->local = 1; |
| 1061 | new_version_node->lowered = true; |
| 1062 | if (!implicit_section) |
| 1063 | new_version_node->set_section (*this); |
| 1064 | /* Clones of global symbols or symbols with unique names are unique. */ |
| 1065 | if ((TREE_PUBLIC (old_decl)((old_decl)->base.public_flag) |
| 1066 | && !DECL_EXTERNAL (old_decl)((contains_struct_check ((old_decl), (TS_DECL_COMMON), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1066, __FUNCTION__))->decl_common.decl_flag_1) |
| 1067 | && !DECL_WEAK (old_decl)((contains_struct_check ((old_decl), (TS_DECL_WITH_VIS), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1067, __FUNCTION__))->decl_with_vis.weak_flag) |
| 1068 | && !DECL_COMDAT (old_decl)((contains_struct_check ((old_decl), (TS_DECL_WITH_VIS), "/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-clang-static-analyzer/build/gcc/cgraphclones.c" , 1068, __FUNCTION__))->decl_with_vis.comdat_flag)) |
| 1069 | || in_lto_pglobal_options.x_in_lto_p) |
| 1070 | new_version_node->unique_name = true; |
| 1071 | |
| 1072 | /* Update the call_expr on the edges to call the new version node. */ |
| 1073 | update_call_expr (new_version_node); |
| 1074 | |
| 1075 | symtab->call_cgraph_insertion_hooks (new_version_node); |
| 1076 | return new_version_node; |
| 1077 | } |
| 1078 | |
| 1079 | /* Remove the node from the tree of virtual and inline clones and make it a |
| 1080 | standalone node - not a clone any more. */ |
| 1081 | |
| 1082 | void cgraph_node::remove_from_clone_tree () |
| 1083 | { |
| 1084 | if (next_sibling_clone) |
| 1085 | next_sibling_clone->prev_sibling_clone = prev_sibling_clone; |
| 1086 | if (prev_sibling_clone) |
| 1087 | prev_sibling_clone->next_sibling_clone = next_sibling_clone; |
| 1088 | else |
| 1089 | clone_of->clones = next_sibling_clone; |
| 1090 | next_sibling_clone = NULLnullptr; |
| 1091 | prev_sibling_clone = NULLnullptr; |
| 1092 | clone_of = NULLnullptr; |
| 1093 | } |
| 1094 | |
| 1095 | /* Given virtual clone, turn it into actual clone. */ |
| 1096 | |
| 1097 | void |
| 1098 | cgraph_node::materialize_clone () |
| 1099 | { |
| 1100 | clone_info *info = clone_info::get (this); |
| 1101 | clone_of->get_untransformed_body (); |
| 1102 | former_clone_of = clone_of->decl; |
| 1103 | if (clone_of->former_clone_of) |
| 1104 | former_clone_of = clone_of->former_clone_of; |
| 1105 | if (symtab->dump_file) |
| 1106 | { |
| 1107 | fprintf (symtab->dump_file, "cloning %s to %s\n", |
| 1108 | clone_of->dump_name (), |
| 1109 | dump_name ()); |
| 1110 | if (info && info->tree_map) |
| 1111 | { |
| 1112 | fprintf (symtab->dump_file, " replace map:"); |
| 1113 | for (unsigned int i = 0; |
| 1114 | i < vec_safe_length (info->tree_map); |
| 1115 | i++) |
| 1116 | { |
| 1117 | ipa_replace_map *replace_info; |
| 1118 | replace_info = (*info->tree_map)[i]; |
| 1119 | fprintf (symtab->dump_file, "%s %i -> ", |
| 1120 | i ? "," : "", replace_info->parm_num); |
| 1121 | print_generic_expr (symtab->dump_file, |
| 1122 | replace_info->new_tree); |
| 1123 | } |
| 1124 | fprintf (symtab->dump_file, "\n"); |
| 1125 | } |
| 1126 | if (info && info->param_adjustments) |
| 1127 | info->param_adjustments->dump (symtab->dump_file); |
| 1128 | } |
| 1129 | clear_stmts_in_references (); |
| 1130 | /* Copy the OLD_VERSION_NODE function tree to the new version. */ |
| 1131 | tree_function_versioning (clone_of->decl, decl, |
| 1132 | info ? info->tree_map : NULLnullptr, |
| 1133 | info ? info->param_adjustments : NULLnullptr, |
| 1134 | true, NULLnullptr, NULLnullptr); |
| 1135 | if (symtab->dump_file) |
| 1136 | { |
| 1137 | dump_function_to_file (clone_of->decl, symtab->dump_file, |
| 1138 | dump_flags); |
| 1139 | dump_function_to_file (decl, symtab->dump_file, dump_flags); |
| 1140 | } |
| 1141 | |
| 1142 | cgraph_node *this_clone_of = clone_of; |
| 1143 | /* Function is no longer clone. */ |
| 1144 | remove_from_clone_tree (); |
| 1145 | if (!this_clone_of->analyzed && !this_clone_of->clones) |
| 1146 | { |
| 1147 | this_clone_of->release_body (); |
| 1148 | this_clone_of->remove_callees (); |
| 1149 | this_clone_of->remove_all_references (); |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | #include "gt-cgraphclones.h" |