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Functions | |
| enum reg_class | lra_get_allocno_class (int regno) |
| rtx | lra_eliminate_regs (rtx, machine_mode, rtx) |
| void | lra (FILE *, int) |
| void | lra_init_once (void) |
| void | lra_finish_once (void) |
| const HARD_REG_SET * | lra_get_dependent_filter (int, machine_mode, unsigned int, machine_mode, bool) |
| void | lra_reset_dependent_filters (void) |
Variables | |
| bool | lra_simple_p |
Function Documentation
◆ lra()
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extern |
Major LRA entry function. F is a file should be used to dump LRA debug info with given verbosity.
References assign_stack_local(), bitmap_clear(), bitmap_empty_p(), bitmap_initialize(), bitmap_ones(), cfun, check_rtl(), commit_edge_insertions(), crtl, DF_NO_INSN_RESCAN, df_set_flags(), df_set_regs_ever_live(), emit_note(), EXECUTE_IF_SET_IN_BITMAP, expand_reg_info(), find_many_sub_basic_blocks(), finish_insn_recog_data(), finish_reg_info(), fixed_regs, fixup_abnormal_edges(), gen_reg_rtx(), get_frame_size(), get_insns(), get_last_insn(), get_max_uid(), has_nonexceptional_receiver(), i, init_insn_recog_data(), init_reg_info(), INT_MAX, ira_no_alloc_regs, ira_restore_scratches(), last_basic_block_for_fn, LOCAL_REGNO, lra_asm_error_p, lra_assign(), lra_assignment_iter, lra_assignment_iter_after_spill, lra_bad_spill_regno_start, lra_clear_live_ranges(), lra_coalesce(), lra_coalesce_iter, lra_constraint_insn_stack, lra_constraint_insn_stack_bitmap, lra_constraint_iter, lra_constraint_new_regno_start, lra_constraints(), lra_constraints_finish(), lra_constraints_init(), lra_create_live_ranges(), lra_curr_reload_num, lra_dump_file, lra_eliminate(), lra_final_code_change(), lra_finish_equiv(), lra_fp_pseudo_p(), lra_hard_reg_split_p, lra_in_progress, lra_inheritance(), lra_inheritance_iter, lra_inheritance_pseudos, lra_init_equiv(), lra_live_range_iter, lra_live_ranges_finish(), lra_live_ranges_init(), LRA_MAX_FAILED_SPLITS, LRA_MAX_INHERITANCE_PASSES, LRA_MAX_REMATERIALIZATION_PASSES, lra_need_for_scratch_reg_p(), lra_need_for_spills_p(), lra_new_regno_start, lra_no_alloc_regs, lra_optional_reload_pseudos, lra_pmode_pseudo, lra_postponed_insns, lra_push_insn_by_uid(), lra_reg_spill_p, lra_remat(), lra_rematerialization_iter, lra_reset_dependent_filters(), lra_simple_p, lra_spill(), lra_split_hard_reg_for(), lra_split_regs, lra_subreg_reload_pseudos, lra_undo_inheritance(), lra_undo_inheritance_iter, lra_verbose, max_reg_num(), NULL, push_insns(), reg_obstack, regstat_free_n_sets_and_refs(), regstat_free_ri(), reload_completed, remove_scratches(), sbitmap_alloc(), sbitmap_free(), setup_reg_spill_flag(), timevar_pop(), timevar_push(), unshare_all_rtl_again(), update_inc_notes(), and verbose.
Referenced by do_reload().
◆ lra_eliminate_regs()
This function is used externally in subsequent passes of GCC. It always does a full elimination of X.
References lra_eliminate_regs_1(), and NULL.
Referenced by based_loc_descr(), compute_frame_pointer_to_fb_displacement(), reg_loc_descriptor(), and vt_initialize().
◆ lra_finish_once()
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extern |
Called once per compiler to finish LRA data which are initialize once.
References finish_insn_code_data_once(), and lra_finish_dependent_filter_cache().
Referenced by finalize().
◆ lra_get_allocno_class()
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inline |
Return the allocno reg class of REGNO. If it is a reload pseudo, the pseudo should finally get hard register of the allocno class.
References reg_allocno_class(), and resize_reg_info().
Referenced by assign_by_spills(), assign_spill_hard_regs(), combine_reload_insn(), curr_insn_transform(), get_reg_class(), get_reload_reg(), get_try_hard_regno(), inherit_in_ebb(), inherit_reload_reg(), lra_assign(), lra_constraints(), lra_split_hard_reg_for(), process_address_1(), process_invariant_for_inheritance(), setup_live_pseudos_and_spill_after_risky_transforms(), simplify_operand_subreg(), split_reg(), and update_scratch_ops().
◆ lra_get_dependent_filter()
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extern |
Return the set of hardregs allowed by dependent filter ID for an operand of mode MODE when the referenced operand has PARTNER_REGNO in PARTNER_MODE. That is when IS_REF is false. If it is true, the roles are reversed and PARTNER_REGNO as well as PARTNER_MODE refer to the dependent operand. We fill the set for all hardregs and add the resulting regset to a hash table if it doesn't already exist in it.
References dependent_filter_htab, dependent_filter::id, dependent_filter::is_ref, dependent_filter::mode, dependent_filter::partner_mode, dependent_filter::partner_regno, and SET_HARD_REG_BIT.
Referenced by find_hard_regno_for_1(), get_dependent_filter(), and ira_dependent_filter().
◆ lra_init_once()
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extern |
Called once per compiler to initialize LRA data once.
References init_insn_code_data_once(), and lra_init_dependent_filter_cache().
Referenced by ira_init_once().
◆ lra_reset_dependent_filters()
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extern |
Variable Documentation
◆ lra_simple_p
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extern |
Communication between the Local Register Allocator (LRA) and the rest of the compiler. Copyright (C) 2010-2026 Free Software Foundation, Inc. Contributed by Vladimir Makarov <vmakarov@redhat.com>. 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/>.
True if the current function is too big to use regular algorithms in LRA. In other words, we should use simpler and faster algorithms in LRA. It also means we should not worry about generation code for caller saves. The value is set up in IRA.
Referenced by assign_by_spills(), curr_insn_transform(), ira(), and lra().
