re PR ipa/61324 (ICE: SIGSEGV at ipa-comdats.c:321 with -fno-use-cxa-atexit -fkeep-inline-functions)
PR ipa/61324 * testsuite/g++.dg/pr61324.C: New testcase by Trevor Saunders. * testsuite/g++.dg/tm/pr51411-2.C: Update se the extern function is not eliminated early. * testsuite/gcc.target/i386/pr57756.c: Turn extern inline into static inline. * passes.c (execute_todo): Update call of remove_unreachable_nodes. * ipa-chkp.c (chkp_produce_thunks): Use TODO_remove_functions. * cgraphunit.c (symbol_table::process_new_functions): Add IPA_SSA_AFTER_INLINING. (ipa_passes): Update call of remove_unreachable_nodes. (symbol_table::compile): Remove call of remove_unreachable_nodes. * ipa-inline.c (inline_small_functions): Do not ICE with -flto-partition=none (ipa_inline): Update symtab->state; fix formatting update call of remove_unreachable_nodes. * cgraphclones.c (symbol_table::materialize_all_clones): Likewise. * cgraph.h (enum symtab_state): Add IPA_SSA_AFTER_INLINING. (remove_unreachable_nodes): Update. * ipa.c (process_references): Keep external references only when optimizing. (walk_polymorphic_call_targets): Keep possible polymorphic call target only when devirtualizing. (symbol_table::remove_unreachable_nodes): Remove BEFORE_INLINING_P parameter. (ipa_single_use): Update comment. * ipa-pure-const.c (cdtor_p): New function. (propagate_pure_const): Track if some cdtor was turned pure/const. (execute): Return TODO_remove_functions if needed. * ipa-comdats.c (ipa_comdats): Update comment. * lto.c (read_cgraph_and_symbols): Update call of remove_unreachable_nodes. (do_whole_program_analysis): Remove call of symtab->remove_unreachable_nodes From-SVN: r218640
This commit is contained in:
Jan Hubicka
Jan Hubicka
parent
d4b7742db2
commit
17e0fc9202
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@ -1,3 +1,32 @@
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2014-12-11 Jan Hubicka <hubicka@ucw.cz>
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PR ipa/61324
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* passes.c (execute_todo): Update call of remove_unreachable_nodes.
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* ipa-chkp.c (chkp_produce_thunks): Use TODO_remove_functions.
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* cgraphunit.c (symbol_table::process_new_functions): Add
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IPA_SSA_AFTER_INLINING.
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(ipa_passes): Update call of remove_unreachable_nodes.
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(symbol_table::compile): Remove call of remove_unreachable_nodes.
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* ipa-inline.c (inline_small_functions): Do not ICE with
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-flto-partition=none
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(ipa_inline): Update symtab->state; fix formatting
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update call of remove_unreachable_nodes.
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* passes.c (execute_todo): Update call of remove_unreachable_nodes.
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* cgraphclones.c (symbol_table::materialize_all_clones): Likewise.
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* cgraph.h (enum symtab_state): Add IPA_SSA_AFTER_INLINING.
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(remove_unreachable_nodes): Update.
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* ipa.c (process_references): Keep external references only
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when optimizing.
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(walk_polymorphic_call_targets): Keep possible polymorphic call
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target only when devirtualizing.
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(symbol_table::remove_unreachable_nodes): Remove BEFORE_INLINING_P
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parameter.
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(ipa_single_use): Update comment.
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* ipa-pure-const.c (cdtor_p): New function.
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(propagate_pure_const): Track if some cdtor was turned pure/const.
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(execute): Return TODO_remove_functions if needed.
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* ipa-comdats.c (ipa_comdats): Update comment.
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2014-12-11 Aldy Hernandez <aldyh@redhat.com>
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* dwarf2out.c (gen_lexical_block_die): Remove unused `depth'
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@ -1801,12 +1801,15 @@ enum symtab_state
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PARSING,
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/* Callgraph is being constructed. It is safe to add new functions. */
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CONSTRUCTION,
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/* Callgraph is being at LTO time. */
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/* Callgraph is being streamed-in at LTO time. */
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LTO_STREAMING,
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/* Callgraph is built and IPA passes are being run. */
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/* Callgraph is built and early IPA passes are being run. */
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IPA,
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/* Callgraph is built and all functions are transformed to SSA form. */
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IPA_SSA,
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/* All inline decisions are done; it is now possible to remove extern inline
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functions and virtual call targets. */
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IPA_SSA_AFTER_INLINING,
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/* Functions are now ordered and being passed to RTL expanders. */
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EXPANSION,
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/* All cgraph expansion is done. */
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@ -1876,7 +1879,7 @@ public:
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}
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/* Perform reachability analysis and reclaim all unreachable nodes. */
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bool remove_unreachable_nodes (bool before_inlining_p, FILE *file);
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bool remove_unreachable_nodes (FILE *file);
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/* Optimization of function bodies might've rendered some variables as
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unnecessary so we want to avoid these from being compiled. Re-do
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@ -1146,7 +1146,7 @@ symbol_table::materialize_all_clones (void)
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#ifdef ENABLE_CHECKING
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cgraph_node::verify_cgraph_nodes ();
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#endif
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symtab->remove_unreachable_nodes (false, symtab->dump_file);
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symtab->remove_unreachable_nodes (symtab->dump_file);
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}
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#include "gt-cgraphclones.h"
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@ -327,6 +327,7 @@ symbol_table::process_new_functions (void)
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case IPA:
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case IPA_SSA:
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case IPA_SSA_AFTER_INLINING:
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/* When IPA optimization already started, do all essential
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transformations that has been already performed on the whole
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cgraph but not on this function. */
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@ -335,7 +336,7 @@ symbol_table::process_new_functions (void)
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if (!node->analyzed)
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node->analyze ();
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push_cfun (DECL_STRUCT_FUNCTION (fndecl));
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if (state == IPA_SSA
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if ((state == IPA_SSA || state == IPA_SSA_AFTER_INLINING)
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&& !gimple_in_ssa_p (DECL_STRUCT_FUNCTION (fndecl)))
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g->get_passes ()->execute_early_local_passes ();
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else if (inline_summary_vec != NULL)
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@ -507,6 +508,7 @@ cgraph_node::add_new_function (tree fndecl, bool lowered)
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case IPA:
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case IPA_SSA:
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case IPA_SSA_AFTER_INLINING:
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case EXPANSION:
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/* Bring the function into finalized state and enqueue for later
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analyzing and compilation. */
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@ -2053,7 +2055,7 @@ ipa_passes (void)
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/* This extra symtab_remove_unreachable_nodes pass tends to catch some
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devirtualization and other changes where removal iterate. */
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symtab->remove_unreachable_nodes (true, symtab->dump_file);
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symtab->remove_unreachable_nodes (symtab->dump_file);
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/* If pass_all_early_optimizations was not scheduled, the state of
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the cgraph will not be properly updated. Update it now. */
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@ -2194,10 +2196,6 @@ symbol_table::compile (void)
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return;
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}
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/* This pass remove bodies of extern inline functions we never inlined.
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Do this later so other IPA passes see what is really going on.
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FIXME: This should be run just after inlining by pasmanager. */
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remove_unreachable_nodes (false, dump_file);
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global_info_ready = true;
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if (dump_file)
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{
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@ -647,9 +647,7 @@ chkp_produce_thunks (void)
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chkp_function_mark_instrumented (node->decl);
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}
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symtab->remove_unreachable_nodes (true, dump_file);
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return 0;
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return TODO_remove_functions;
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}
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const pass_data pass_data_ipa_chkp_versioning =
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@ -327,7 +327,14 @@ ipa_comdats (void)
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&& !symbol->alias
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&& symbol->real_symbol_p ())
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{
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tree group = *map.get (symbol);
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tree *val = map.get (symbol);
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/* A NULL here means that SYMBOL is unreachable in the definition
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of ipa-comdats. Either ipa-comdats is wrong about this or someone
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forgot to cleanup and remove unreachable functions earlier. */
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gcc_assert (val);
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tree group = *val;
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if (group == error_mark_node)
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continue;
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@ -1731,9 +1731,9 @@ inline_small_functions (void)
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" to be inlined into %s/%i in %s:%i\n"
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" Estimated badness is %"PRId64", frequency %.2f.\n",
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edge->caller->name (), edge->caller->order,
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flag_wpa ? "unknown"
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edge->call_stmt ? "unknown"
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: gimple_filename ((const_gimple) edge->call_stmt),
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flag_wpa ? -1
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edge->call_stmt ? -1
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: gimple_lineno ((const_gimple) edge->call_stmt),
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badness.to_int (),
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edge->frequency / (double)CGRAPH_FREQ_BASE);
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@ -2188,9 +2188,12 @@ ipa_inline (void)
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inline_small_functions ();
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/* Do first after-inlining removal. We want to remove all "stale" extern inline
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functions and virtual functions so we really know what is called once. */
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symtab->remove_unreachable_nodes (false, dump_file);
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gcc_assert (symtab->state == IPA_SSA);
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symtab->state = IPA_SSA_AFTER_INLINING;
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/* Do first after-inlining removal. We want to remove all "stale" extern
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inline functions and virtual functions so we really know what is called
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once. */
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symtab->remove_unreachable_nodes (dump_file);
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free (order);
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/* Inline functions with a property that after inlining into all callers the
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@ -2199,7 +2202,8 @@ ipa_inline (void)
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are met. */
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if (dump_file)
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fprintf (dump_file,
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"\nDeciding on functions to be inlined into all callers and removing useless speculations:\n");
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"\nDeciding on functions to be inlined into all callers and "
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"removing useless speculations:\n");
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/* Inlining one function called once has good chance of preventing
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inlining other function into the same callee. Ideally we should
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@ -2247,10 +2251,11 @@ ipa_inline (void)
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int num_calls = 0;
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node->call_for_symbol_thunks_and_aliases (sum_callers, &num_calls,
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true);
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while (node->call_for_symbol_thunks_and_aliases (inline_to_all_callers,
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&num_calls, true))
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while (node->call_for_symbol_thunks_and_aliases
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(inline_to_all_callers, &num_calls, true))
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;
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remove_functions = true;
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if (num_calls)
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remove_functions = true;
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}
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}
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}
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@ -1160,10 +1160,21 @@ self_recursive_p (struct cgraph_node *node)
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return false;
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}
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/* Return true if N is cdtor that is not const or pure. In this case we may
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need to remove unreachable function if it is marked const/pure. */
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static bool
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cdtor_p (cgraph_node *n, void *)
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{
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if (DECL_STATIC_CONSTRUCTOR (n->decl) || DECL_STATIC_DESTRUCTOR (n->decl))
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return !TREE_READONLY (n->decl) && !DECL_PURE_P (n->decl);
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return false;
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}
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/* Produce transitive closure over the callgraph and compute pure/const
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attributes. */
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static void
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static bool
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propagate_pure_const (void)
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{
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struct cgraph_node *node;
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@ -1173,6 +1184,7 @@ propagate_pure_const (void)
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int order_pos;
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int i;
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struct ipa_dfs_info * w_info;
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bool remove_p = false;
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order_pos = ipa_reduced_postorder (order, true, false, NULL);
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if (dump_file)
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@ -1447,6 +1459,8 @@ propagate_pure_const (void)
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this_looping ? "looping " : "",
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w->name ());
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}
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remove_p |= w->call_for_symbol_and_aliases (cdtor_p,
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NULL, true);
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w->set_const_flag (true, this_looping);
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break;
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@ -1459,6 +1473,8 @@ propagate_pure_const (void)
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this_looping ? "looping " : "",
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w->name ());
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}
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remove_p |= w->call_for_symbol_and_aliases (cdtor_p,
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NULL, true);
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w->set_pure_flag (true, this_looping);
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break;
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@ -1472,6 +1488,7 @@ propagate_pure_const (void)
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ipa_free_postorder_info ();
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free (order);
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return remove_p;
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}
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/* Produce transitive closure over the callgraph and compute nothrow
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@ -1581,6 +1598,7 @@ pass_ipa_pure_const::
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execute (function *)
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{
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struct cgraph_node *node;
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bool remove_p;
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symtab->remove_cgraph_insertion_hook (function_insertion_hook_holder);
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symtab->remove_cgraph_duplication_hook (node_duplication_hook_holder);
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@ -1589,14 +1607,14 @@ execute (function *)
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/* Nothrow makes more function to not lead to return and improve
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later analysis. */
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propagate_nothrow ();
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propagate_pure_const ();
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remove_p = propagate_pure_const ();
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/* Cleanup. */
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FOR_EACH_FUNCTION (node)
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if (has_function_state (node))
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free (get_function_state (node));
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funct_state_vec.release ();
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return 0;
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return remove_p ? TODO_remove_functions : 0;
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}
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static bool
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68
gcc/ipa.c
68
gcc/ipa.c
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@ -123,21 +123,33 @@ process_references (symtab_node *snode,
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for (i = 0; snode->iterate_reference (i, ref); i++)
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{
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symtab_node *node = ref->referred;
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symtab_node *body = node->ultimate_alias_target ();
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if (node->definition && !node->in_other_partition
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&& ((!DECL_EXTERNAL (node->decl) || node->alias)
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|| (((before_inlining_p
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&& (symtab->state < IPA_SSA
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|| !lookup_attribute ("always_inline",
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DECL_ATTRIBUTES (node->decl)))))
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/* We use variable constructors during late complation for
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&& (TREE_CODE (node->decl) != FUNCTION_DECL
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|| opt_for_fn (body->decl, optimize)
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|| (symtab->state < IPA_SSA
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&& lookup_attribute
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("always_inline",
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DECL_ATTRIBUTES (body->decl))))))
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/* We use variable constructors during late compilation for
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constant folding. Keep references alive so partitioning
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knows about potential references. */
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|| (TREE_CODE (node->decl) == VAR_DECL
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&& flag_wpa
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&& ctor_for_folding (node->decl)
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!= error_mark_node))))
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reachable->add (node);
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{
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/* Be sure that we will not optimize out alias target
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body. */
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if (DECL_EXTERNAL (node->decl)
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&& node->alias
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&& before_inlining_p)
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reachable->add (body);
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reachable->add (node);
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}
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enqueue_node (node, first, reachable);
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}
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}
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@ -178,15 +190,23 @@ walk_polymorphic_call_targets (hash_set<void *> *reachable_call_targets,
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(method_class_type (TREE_TYPE (n->decl))))
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continue;
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symtab_node *body = n->function_symbol ();
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/* Prior inlining, keep alive bodies of possible targets for
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devirtualization. */
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if (n->definition
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&& (before_inlining_p
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&& (symtab->state < IPA_SSA
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|| !lookup_attribute ("always_inline",
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DECL_ATTRIBUTES (n->decl)))))
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reachable->add (n);
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&& opt_for_fn (body->decl, optimize)
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&& opt_for_fn (body->decl, flag_devirtualize)))
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{
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/* Be sure that we will not optimize out alias target
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body. */
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if (DECL_EXTERNAL (n->decl)
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&& n->alias
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&& before_inlining_p)
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reachable->add (body);
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reachable->add (n);
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}
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/* Even after inlining we want to keep the possible targets in the
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boundary, so late passes can still produce direct call even if
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the chance for inlining is lost. */
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@ -246,8 +266,6 @@ walk_polymorphic_call_targets (hash_set<void *> *reachable_call_targets,
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After inlining we release their bodies and turn them into unanalyzed
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nodes even when they are reachable.
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BEFORE_INLINING_P specify whether we are before or after inlining.
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- virtual functions are kept in callgraph even if they seem unreachable in
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hope calls to them will be devirtualized.
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@ -293,7 +311,7 @@ walk_polymorphic_call_targets (hash_set<void *> *reachable_call_targets,
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we set AUX pointer of processed symbols in the boundary to constant 2. */
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bool
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symbol_table::remove_unreachable_nodes (bool before_inlining_p, FILE *file)
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symbol_table::remove_unreachable_nodes (FILE *file)
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{
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symtab_node *first = (symtab_node *) (void *) 1;
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struct cgraph_node *node, *next;
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|
|
@ -302,6 +320,8 @@ symbol_table::remove_unreachable_nodes (bool before_inlining_p, FILE *file)
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hash_set<symtab_node *> reachable;
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hash_set<tree> body_needed_for_clonning;
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hash_set<void *> reachable_call_targets;
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bool before_inlining_p = symtab->state < (!optimize ? IPA_SSA
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: IPA_SSA_AFTER_INLINING);
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timevar_push (TV_IPA_UNREACHABLE);
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build_type_inheritance_graph ();
|
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|
|
@ -414,19 +434,25 @@ symbol_table::remove_unreachable_nodes (bool before_inlining_p, FILE *file)
|
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}
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for (e = cnode->callees; e; e = e->next_callee)
|
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{
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symtab_node *body = e->callee->function_symbol ();
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if (e->callee->definition
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&& !e->callee->in_other_partition
|
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&& (!e->inline_failed
|
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|| !DECL_EXTERNAL (e->callee->decl)
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|| e->callee->alias
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|| before_inlining_p))
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|| (before_inlining_p
|
||||
&& (opt_for_fn (body->decl, optimize)
|
||||
|| (symtab->state < IPA_SSA
|
||||
&& lookup_attribute
|
||||
("always_inline",
|
||||
DECL_ATTRIBUTES (body->decl)))))))
|
||||
{
|
||||
/* Be sure that we will not optimize out alias target
|
||||
body. */
|
||||
if (DECL_EXTERNAL (e->callee->decl)
|
||||
&& e->callee->alias
|
||||
&& before_inlining_p)
|
||||
reachable.add (e->callee->function_symbol ());
|
||||
reachable.add (body);
|
||||
reachable.add (e->callee);
|
||||
}
|
||||
enqueue_node (e->callee, &first, &reachable);
|
||||
|
|
@ -1219,14 +1245,15 @@ propagate_single_user (varpool_node *vnode, cgraph_node *function,
|
|||
function = BOTTOM;
|
||||
}
|
||||
else
|
||||
function = meet (function, dyn_cast <varpool_node *> (ref->referring), single_user_map);
|
||||
function = meet (function, dyn_cast <varpool_node *> (ref->referring),
|
||||
single_user_map);
|
||||
}
|
||||
return function;
|
||||
}
|
||||
|
||||
/* Pass setting used_by_single_function flag.
|
||||
This flag is set on variable when there is only one function that may possibly
|
||||
referr to it. */
|
||||
This flag is set on variable when there is only one function that may
|
||||
possibly referr to it. */
|
||||
|
||||
static unsigned int
|
||||
ipa_single_use (void)
|
||||
|
|
@ -1304,7 +1331,10 @@ ipa_single_use (void)
|
|||
if (var->aux != BOTTOM)
|
||||
{
|
||||
#ifdef ENABLE_CHECKING
|
||||
if (!single_user_map.get (var))
|
||||
/* Not having the single user known means that the VAR is
|
||||
unreachable. Either someone forgot to remove unreachable
|
||||
variables or the reachability here is wrong. */
|
||||
|
||||
gcc_assert (single_user_map.get (var));
|
||||
#endif
|
||||
if (dump_file)
|
||||
|
|
|
|||
|
|
@ -1,3 +1,11 @@
|
|||
2014-12-11 Jan Hubicka <hubicka@ucw.cz>
|
||||
|
||||
PR ipa/61324
|
||||
* lto.c (read_cgraph_and_symbols): Update call of
|
||||
remove_unreachable_nodes.
|
||||
(do_whole_program_analysis): Remove call of
|
||||
symtab->remove_unreachable_nodes
|
||||
|
||||
2014-12-08 Trevor Saunders <tsaunders@mozilla.com>
|
||||
|
||||
* lto.c (read_cgraph_and_symbols): allocate gimple_canonical_types
|
||||
|
|
|
|||
|
|
@ -3098,7 +3098,7 @@ read_cgraph_and_symbols (unsigned nfiles, const char **fnames)
|
|||
/* Removal of unreachable symbols is needed to make verify_symtab to pass;
|
||||
we are still having duplicated comdat groups containing local statics.
|
||||
We could also just remove them while merging. */
|
||||
symtab->remove_unreachable_nodes (true, dump_file);
|
||||
symtab->remove_unreachable_nodes (dump_file);
|
||||
ggc_collect ();
|
||||
symtab->state = IPA_SSA;
|
||||
|
||||
|
|
@ -3255,7 +3255,6 @@ do_whole_program_analysis (void)
|
|||
symtab->state = IPA_SSA;
|
||||
|
||||
execute_ipa_pass_list (g->get_passes ()->all_regular_ipa_passes);
|
||||
symtab->remove_unreachable_nodes (false, dump_file);
|
||||
|
||||
if (symtab->dump_file)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -2003,7 +2003,7 @@ execute_todo (unsigned int flags)
|
|||
if (flags & TODO_remove_functions)
|
||||
{
|
||||
gcc_assert (!cfun);
|
||||
symtab->remove_unreachable_nodes (true, dump_file);
|
||||
symtab->remove_unreachable_nodes (dump_file);
|
||||
}
|
||||
|
||||
if ((flags & TODO_dump_symtab) && dump_file && !current_function_decl)
|
||||
|
|
|
|||
|
|
@ -1,3 +1,12 @@
|
|||
2014-12-11 Jan Hubicka <hubicka@ucw.cz>
|
||||
|
||||
PR ipa/61324
|
||||
* testsuite/g++.dg/pr61324.C: New testcase by Trevor Saunders.
|
||||
* testsuite/g++.dg/tm/pr51411-2.C: Update se the extern function is
|
||||
not eliminated early.
|
||||
* testsuite/gcc.target/i386/pr57756.c: Turn extern inline into static
|
||||
inline.
|
||||
|
||||
2014-12-11 Richard Biener <rguenther@suse.de>
|
||||
|
||||
PR tree-optimization/42108
|
||||
|
|
|
|||
|
|
@ -0,0 +1,13 @@
|
|||
// { dg-do compile }
|
||||
// { dg-options "-O -fkeep-inline-functions -fno-use-cxa-atexit" }
|
||||
void foo ();
|
||||
|
||||
struct S
|
||||
{
|
||||
~S ()
|
||||
{
|
||||
foo ();
|
||||
}
|
||||
};
|
||||
|
||||
S s;
|
||||
|
|
@ -26,6 +26,7 @@ public:
|
|||
bool compare(const basic_string& __str) const {
|
||||
return 0;
|
||||
}
|
||||
void key ();
|
||||
};
|
||||
|
||||
typedef basic_string<char> string;
|
||||
|
|
@ -35,7 +36,7 @@ inline bool operator<(const basic_string<_CharT, _Traits>& __lhs, const basic_st
|
|||
return __lhs.compare(__rhs);
|
||||
}
|
||||
|
||||
extern template class basic_string<char>;
|
||||
template class basic_string<char>;
|
||||
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@ __inline int callee () /* { dg-error "inlining failed in call to always_inline"
|
|||
}
|
||||
|
||||
__attribute__((target("sse")))
|
||||
__inline int caller ()
|
||||
static __inline int caller ()
|
||||
{
|
||||
return callee(); /* { dg-error "called from here" } */
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue