lra.h File Reference

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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)

Variables
bool	lra_simple_p

Function Documentation

lra()

void lra ( FILE * f, int verbose )

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(), 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_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_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_reg_spill_p, lra_remat(), lra_rematerialization_iter, 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()

rtx lra_eliminate_regs ( rtx x, machine_mode mem_mode, rtx insn )

extern

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()

void lra_finish_once ( void )

extern

Called once per compiler to finish LRA data which are initialize
once.   

References finish_insn_code_data_once().

Referenced by finalize().

lra_get_allocno_class()

enum reg_class lra_get_allocno_class ( int regno )

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_init_once()

void lra_init_once ( void )

extern

Called once per compiler to initialize LRA data once.   

References init_insn_code_data_once().

Referenced by ira_init_once().

Variable Documentation

lra_simple_p

bool lra_simple_p

extern

Communication between the Local Register Allocator (LRA) and
   the rest of the compiler.
   Copyright (C) 2010-2024 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().