GCC Middle and Back End API Reference
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#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
#include "cpplib.h"
#include "gt-stringpool.h"
Data Structures | |
struct | string_pool_data |
struct | string_pool_data_extra |
Functions | |
static hashnode | alloc_node (cpp_hash_table *) |
static int | mark_ident (struct cpp_reader *, hashnode, const void *) |
static void * | stringpool_ggc_alloc (size_t x) |
void | init_stringpool (void) |
const char * | ggc_alloc_string (const char *contents, int length MEM_STAT_DECL) |
tree | get_identifier (const char *text) |
tree | get_identifier_with_length (const char *text, size_t length) |
tree | maybe_get_identifier (const char *text) |
void | stringpool_statistics (void) |
static int | maybe_delete_ident (struct cpp_reader *pfile, hashnode h, const void *v) |
void | ggc_mark_stringpool (void) |
void | ggc_purge_stringpool (void) |
void | gt_pch_p_S (void *obj, void *x, gt_pointer_operator op, void *cookie) |
void | gt_pch_n_S (const void *x) |
void | gt_pch_n_S2 (const void *x, size_t string_len) |
void | gt_pch_nx (const char *&x) |
void | gt_pch_nx (char *&x) |
void | gt_pch_nx (unsigned char *&x) |
void | gt_pch_nx (unsigned char &x) |
void | gt_pch_nx (unsigned char *x, gt_pointer_operator op, void *cookie) |
void | gt_pch_save_stringpool (void) |
void | gt_pch_fixup_stringpool (void) |
void | gt_pch_restore_stringpool (void) |
Variables | |
struct ht * | ident_hash |
struct ht * | ident_hash_extra |
static struct string_pool_data * | spd |
static struct string_pool_data_extra * | spd2 |
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Allocate a hash node.
References GCC_IDENT_TO_HT_IDENT, and make_node().
Referenced by init_stringpool(), omp_accumulate_sibling_list(), and access_group::track().
tree get_identifier | ( | const char * | text | ) |
Return an IDENTIFIER_NODE whose name is TEXT (a null-terminated string). If an identifier with that name has previously been referred to, the same node is returned this time.
References HT_IDENT_TO_GCC_IDENT, and ident_hash.
Referenced by add_builtin_type(), add_detected_attribute_1(), autofdo::afdo_indirect_call(), attr_access::array_as_string(), asan_add_global(), asan_emit_stack_protection(), asan_finish_file(), asan_global_struct(), asan_memfn_rtl(), asan_poison_variables(), assemble_external_libcall(), assign_parms_augmented_arg_list(), build_builtin_function(), build_common_tree_nodes(), build_complex_type(), build_constant_desc(), build_cxa_atexit_decl(), build_dso_handle_decl(), build_fn_decl(), build_gcov_exit_decl(), build_gcov_info_var_registration(), build_info(), build_init_ctor(), build_libfunc_function_visibility(), tree_switch_conversion::switch_conversion::build_one_array(), build_personality_function(), build_var(), cgraph_build_static_cdtor_1(), rt_bb_visited::check(), clone_function_name(), clone_function_name(), clone_function_name_numbered(), common_function_versions(), copy_decl_for_dup_finish(), coverage_obj_finish(), coverage_obj_init(), create_access_replacement(), create_assumption_fn(), function_reader::create_function(), create_loop_fn(), create_odr_indicator(), create_omp_child_function(), create_one_component_var(), create_parallel_loop(), create_tmp_var_name(), cgraph_node::create_virtual_clone(), create_vop_var(), decl_attributes(), declare_weak(), default_emutls_var_fields(), default_external_stack_protect_fail(), default_hidden_stack_protect_fail(), default_mangle_assembler_name(), default_stack_protect_guard(), dw2_force_const_mem(), dwarf2out_register_external_die(), emit_library_call_value_1(), expand_builtin_fork_or_exec(), expand_omp_target(), expand_simd_clones(), finalize_nesting_tree_1(), autofdo::function_instance::find_icall_target_map(), finish_builtin_struct(), gen_block_die(), get_alias_symbol(), get_chain_field(), get_descriptor_type(), get_emutls_object_type(), get_file_function_name(), get_frame_type(), get_gnu_namespace(), get_nl_goto_field(), get_spill_slot_decl(), get_trampoline_type(), gimple_init_gcov_profiler(), gimplify_adjust_omp_clauses_1(), gimplify_bind_expr(), gimplify_oacc_declare(), init_eh(), init_ic_make_global_vars(), init_one_libfunc_visibility(), initialize_sizetypes(), install_var_field(), is_cxx_auto(), lhd_set_decl_assembler_name(), lhd_simulate_enum_decl(), lhd_simulate_record_decl(), lower_omp_critical(), lower_omp_target(), lower_rec_simd_input_clauses(), make_attribute(), make_temp_ssa_name(), oacc_replace_fn_attrib_attr(), omp_discover_declare_target_tgt_fn_r(), omp_discover_declare_target_var_r(), omp_finish_file(), omp_mark_declare_variant(), omp_resolve_declare_variant(), output_comdat_type_unit(), output_comp_unit(), function_reader::parse_mem_expr(), prefix_name(), process_pending_assemble_externals(), push_dummy_function(), read_identifier(), remap_type_1(), rest_of_decl_compilation(), self_referential_size(), set_call_expr_flags(), set_stack_check_libfunc(), set_user_assembler_libfunc(), set_user_assembler_name(), simd_clone_mangle(), strub_set_fndt_mode_to(), tm_mangle(), ubsan_create_data(), ubsan_expand_vptr_ifn(), ubsan_get_source_location_type(), ubsan_get_type_descriptor_type(), and ubsan_type_descriptor().
tree get_identifier_with_length | ( | const char * | text, |
size_t | length ) |
Identical to get_identifier, except that the length is assumed known.
References HT_IDENT_TO_GCC_IDENT, and ident_hash.
Referenced by canonicalize_attr_name(), handle_ignored_attributes_option(), access_ref::inform_access(), input_identifier(), make_anon_name(), and process_symver_attribute().
const char * ggc_alloc_string | ( | const char * | contents, |
int length | MEM_STAT_DECL ) |
Allocate and return a string constant of length LENGTH, containing CONTENTS. If LENGTH is -1, CONTENTS is assumed to be a nul-terminated string, and the length is calculated using strlen.
References ggc_alloc_atomic().
Referenced by gen_interclass_conv_libfunc(), gen_intraclass_conv_libfunc(), gen_libfunc(), gimple_build_asm_1(), output_file_names(), and parse_output_constraint().
void ggc_mark_stringpool | ( | void | ) |
Mark the trees hanging off the identifier node for GGC. These are handled specially (not using gengtype) because identifiers are only roots during one part of compilation.
References ident_hash, ident_hash_extra, mark_ident(), and NULL.
Referenced by ggc_mark_roots().
void ggc_purge_stringpool | ( | void | ) |
Purge the identifier hash of identifiers which are no longer referenced.
References ggc_marked_p(), ident_hash, ident_hash_extra, maybe_delete_ident(), and NULL.
Referenced by ggc_mark_roots().
void gt_pch_fixup_stringpool | ( | void | ) |
Return the stringpool to its state before gt_pch_save_stringpool was called.
Referenced by gt_pch_save().
void gt_pch_n_S | ( | const void * | x | ) |
PCH pointer-walking routine for strings.
References CONST_CAST, gt_pch_note_object(), and gt_pch_p_S().
Referenced by gt_pch_nx(), gt_pch_nx(), and gt_pch_nx().
void gt_pch_n_S2 | ( | const void * | x, |
size_t | string_len ) |
References CONST_CAST, gt_pch_note_object(), and gt_pch_p_S().
void gt_pch_nx | ( | char *& | x | ) |
References gt_pch_n_S().
void gt_pch_nx | ( | const char *& | x | ) |
User-callable entry point for marking string X.
References gt_pch_n_S().
void gt_pch_nx | ( | unsigned char & | x | ) |
void gt_pch_nx | ( | unsigned char *& | x | ) |
References gt_pch_n_S().
void gt_pch_nx | ( | unsigned char * | x, |
gt_pointer_operator | op, | ||
void * | cookie ) |
References NULL.
void gt_pch_p_S | ( | void * | obj, |
void * | x, | ||
gt_pointer_operator | op, | ||
void * | cookie ) |
Pointer-walking routine for strings (not very interesting, since strings don't contain pointers).
References gcc_unreachable.
Referenced by gt_pch_n_S(), gt_pch_n_S2(), gt_pch_note_object(), gt_pch_note_reorder(), and gt_pch_save().
void gt_pch_restore_stringpool | ( | void | ) |
A PCH file has been restored, which loaded SPD; fill the real hash table from SPD.
Referenced by gt_pch_restore().
void gt_pch_save_stringpool | ( | void | ) |
Save the stringpool data in SPD.
References string_pool_data::entries, string_pool_data_extra::entries, ggc_alloc(), ggc_vec_alloc(), ident_hash, ident_hash_extra, string_pool_data::nelements, string_pool_data_extra::nelements, string_pool_data::nslots, string_pool_data_extra::nslots, spd, and spd2.
Referenced by gt_pch_save().
void init_stringpool | ( | void | ) |
Initialize the string pool.
References alloc_node(), ggc_cleared_alloc(), ident_hash, ident_hash_extra, and stringpool_ggc_alloc().
Referenced by general_init().
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Return true if an identifier should be removed from the table.
References ggc_marked_p(), and HT_IDENT_TO_GCC_IDENT.
Referenced by ggc_purge_stringpool().
tree maybe_get_identifier | ( | const char * | text | ) |
If an identifier with the name TEXT (a null-terminated string) has previously been referred to, return that node; otherwise return NULL_TREE.
References HT_IDENT_TO_GCC_IDENT, ident_hash, and NULL_TREE.
Referenced by assemble_name_resolve(), and dw2_force_const_mem().
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References ggc_alloc_atomic().
Referenced by init_stringpool().
void stringpool_statistics | ( | void | ) |
Report some basic statistics about the string pool.
References ident_hash.
Referenced by dump_memory_report().
struct ht* ident_hash |
String pool for GCC. Copyright (C) 2000-2024 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>.
String text, identifier text and identifier node allocator. Identifiers are uniquely stored in a hash table. We use cpplib's hash table implementation. libiberty's hashtab.c is not used because it requires 100% average space overhead per string, which is unacceptable. Also, this algorithm is faster.
Referenced by get_identifier(), get_identifier_with_length(), ggc_mark_stringpool(), ggc_purge_stringpool(), gt_pch_save_stringpool(), init_stringpool(), maybe_get_identifier(), and stringpool_statistics().
struct ht* ident_hash_extra |
Referenced by ggc_mark_stringpool(), ggc_purge_stringpool(), gt_pch_save_stringpool(), and init_stringpool().
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Referenced by gt_pch_save_stringpool(), inline_insns_auto(), and inline_insns_single().
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Referenced by gt_pch_save_stringpool().