Here is a list of all struct and union fields with links to the structures/unions they belong to:

- m -

m : undo
m1 : pattern_d
m2 : pattern_d
machine : function
machine_mode() : target_reload
main : file_hash_entry
main_dr : partition_s
main_size : lto_function_header , lto_decl_header , lto_asm_header , lto_simple_header
main_stream : lto_simple_output_block , output_block
main_variant : tree_type_common
major_version : lto_header
make_forwarder_block : cfg_hooks
make_type : lang_hooks_for_types
malloc_flag : tree_function_decl
mangled : demangled_hash_entry
map : cgraph_node_set_def , varpool_node_set_def , lto_symtab_encoder_d , ssaexpand , loc_map_pair , _elim_graph , live_track_d , tree_live_info_d , temp_expr_table_d
mark : constant_descriptor_rtx
marked_p : ggc_cache_tab
marker_routine : write_types_data
mask : likely_spilled_retval_info , cl_option_handler_func , spec_info_def , prop_value_d , double_int
matched : operand_alternative
matches : operand_alternative
matrix : access_matrix , lambda_trans_matrix_s
max : extend_schedule_str , ira_object , tree_niter_desc , value_range_d , double_int
max_after_base : addr_diff_vec_flags
max_after_vec : addr_diff_vec_flags
max_base_vect_el_value : state_ainsn_table
max_capacity : fixup_edge_d
max_comb_vect_el_value : state_ainsn_table
max_comdat_num : cu_hash_table_entry
max_cycle : partial_schedule
max_distance : expr
max_dup_opno : pattern_stats
max_entries : initial_value_struct
max_errors : diagnostic_context
max_files : file_name_acquire_data
max_index : lto_file_decl_data
max_insn_reserv_cycles : description
max_inv_id : ivopts_data
max_jumptable_ents : control_flow_graph
max_len : path_prefix
max_length : attribute_spec
max_line : dst_file_info_struct
max_loop : lim_aux_data
max_min_delay : automaton
max_node_impact : allocno_hard_regs_subnode
max_num_phi_args : dfa_stats_d
max_occ_cycle_num : unit_decl
max_offset : address_cost_data_s
max_opno : pattern_stats
max_pressure : model_pressure_data
max_reg : deps_desc
max_reg_pressure : bb_data , loop_data , _haifa_insn_data
max_scratch_opno : pattern_stats
max_size : lang_hooks_for_types , ao_ref_s
max_skip : label_alignment
max_used_stack_slot_alignment : rtl_data
max_value : param_info , double_int
max_value_regs : value_data
maximum_length : pretty_printer
maxval : tree_type_non_common
may_alias_ddrs : _loop_vec_info
may_be_spilled_p : allocno_color_data
may_be_zero : tree_niter_desc
may_fallthru : leh_tf_state
may_have_pointers : variable_info , fieldoff
may_misalign_stmts : _loop_vec_info
may_raw : scop
may_raw_no_source : scop
may_return : leh_tf_state
may_throw : leh_tf_state
may_trap_p : vinsn_def
may_war : scop
may_war_no_source : scop
may_waw : scop
may_waw_no_source : scop
maybe_executed_once : cgraph_propagate_frequency_data
maybe_hot_insn_p : rtl_data
maybe_unlikely_executed : cgraph_propagate_frequency_data
md_bitmaps : df_md_problem_data
md_p : enum_type
mdep : CC_STATUS
mem : store_info , read_info , mem_conflict_info , ira_spilled_reg_stack_slot , pseudo_slot , slot , reg_equivs_s , for_each_inc_dec_ops , mem_ref , ssa_operand_memory_d , constant_descriptor_rtx
mem_addr : store_info
mem_constant : mem_inc_info
mem_cost : costs
mem_fetch_after : atomic_op_functions
mem_fetch_before : atomic_op_functions
mem_index : mem_inc_info
mem_insn : mem_inc_info
mem_loc : mem_insn , mem_inc_info
mem_mode : adjust_mem_data
mem_no_result : atomic_op_functions
mem_optimized_dest : ira_emit_data
mem_optimized_dest_p : ira_emit_data
mem_refs : nesting_info
mem_reg0 : mem_inc_info
member_ptr : cgraph_indirect_call_info
members : btr_def_group_s , sparseset_def
memory : resources , ira_reg_equiv
memory_cost : ira_allocno
memory_loc : reg_equivs_s
memory_ok : operand_alternative
memory_strides : lst
merge : gcov_info
merge_blocks : cfg_hooks
merge_succs : code_motion_path_driver_info_def
message : diagnostic_info
min : et_occ , ira_object , double_int , value_range_d
min_after_base : addr_diff_vec_flags
min_after_vec : addr_diff_vec_flags
min_align : addr_diff_vec_flags
min_base_vect_el_value : state_ainsn_table
min_comb_vect_el_value : state_ainsn_table
min_comdat_num : cu_hash_table_entry
min_counter : gcov_working_set_info
min_cycle : partial_schedule
min_index : oc_local_state
min_insn_issue_delay : state
min_issue_delay_table_compression_factor : automaton
min_length : attribute_spec
min_occ : et_occ
min_occ_cycle_num : unit_decl
min_offset : address_cost_data_s
min_profitable_iters : _loop_vec_info
min_value : param_info , gcov_bucket_type , double_int
minimal_DFA_arcs_num : automaton
minimal_DFA_states_num : automaton
minor_version : lto_header
minval : tree_type_non_common
misalign : ptr_info_def , _stmt_info_for_cost
missing_argument_error : cl_option
missing_noreturn_ok_p : lang_hooks
missing_uses : comparison
mod() : double_int
mode : rtx_iv , clear_alias_mode_holder , invariant_expr_entry , address_info , niter_desc , fixed_value , value_data_entry , regexp , operand_data , check_dependence_data , replacement , arg_data , constant_descriptor_rtx , decision_test , ext_cand , seginfo , decl , reload , mode_adjust , alg_hash_entry , gcov_var , file_at_path_info
mode1 : libfunc_entry
mode2 : libfunc_entry
mode_ : bit_field_mode_iterator
model : model_pressure_group
model_index : _haifa_insn_data
model_priority : model_insn_info
modified : ext_state , gimple_statement_base , nrv_data
modified_creation_time : ticker
modified_list : ext_state
modified_noreturn_calls : gimple_df
modified_regnos : ira_loop_tree_node
modulo_epilogue : sched_block_state
mos : variable_tracking_info_def
move : invariant
move_block_after : cfg_hooks
move_cost : ipa_param_descriptor
move_modes_to_split : lower_subreg_choices
mul_with_sign() : double_int
mult : rtx_iv , tailcall , init_expmed_rtl
multi : insn_data_d
multilib : default_include
multiple : _dep
multiple_of() : double_int
multiple_types_encountered : type_change_info
must_have_pointers : fieldoff
must_not_throw : eh_region_d::eh_region_u
must_raw : scop
must_raw_no_source : scop
must_recompute_spec : _haifa_insn_data
must_stay : no_conflict_data
must_war : scop
must_war_no_source : scop
must_waw : scop
must_waw_no_source : scop
mw_hardregs : df_insn_info
mw_order : df_mw_hardreg
mw_reg : df_mw_hardreg
mw_reg_pool : df_scan_problem_data
mw_vec : df_collection_rec