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*参照元 [#eccb1260] #backlinks *説明 [#zc6743cc] -パス: [[gcc-8.3/gcc/ira.c]] -FIXME: これは何？ --説明 **引数 [#edf61e8b] -なし **返り値 [#k2643966] -なし **参考 [#b4b33ad6] *実装 [#me0992e9] static void do_reload (void) { basic_block bb; bool need_dce; unsigned pic_offset_table_regno = INVALID_REGNUM; - --[[gcc-8.3/gcc/basic_block]] if (flag_ira_verbose < 10) ira_dump_file = dump_file; - --[[gcc-8.3/gcc/ira_dump_file(global)]] --[[gcc-8.3/gcc/dump_file(global)]] /* If pic_offset_table_rtx is a pseudo register, then keep it so after reload to avoid possible wrong usages of hard reg assigned to it. */ if (pic_offset_table_rtx && REGNO (pic_offset_table_rtx) >= FIRST_PSEUDO_REGISTER) pic_offset_table_regno = REGNO (pic_offset_table_rtx); - --[[gcc-8.3/gcc/REG_NO()]] timevar_push (TV_RELOAD); if (ira_use_lra_p) { if (current_loops != NULL) { loop_optimizer_finalize (); free_dominance_info (CDI_DOMINATORS); } FOR_ALL_BB_FN (bb, cfun) bb->loop_father = NULL; current_loops = NULL; ira_destroy (); lra (ira_dump_file); /* ???!!! Move it before lra () when we use ira_reg_equiv in LRA. */ vec_free (reg_equivs); reg_equivs = NULL; need_dce = false; } - --[[gcc-8.3/gcc/timevar_push()]] --[[gcc-8.3/gcc/loop_optimizer_finalize()]] --[[gcc-8.3/gcc/free_dominance_info()]] --[[gcc-8.3/gcc/FOR_ALL_BB_FN()]] --[[gcc-8.3/gcc/ira_destroy()]] --[[gcc-8.3/gcc/lra()]] else { df_set_flags (DF_NO_INSN_RESCAN); build_insn_chain (); need_dce = reload (get_insns (), ira_conflicts_p); } - --[[gcc-8.3/gcc/df_set_flags()]] --[[gcc-8.3/gcc/build_insn_chain()]] --[[gcc-8.3/gcc/reload()]] --[[gcc-8.3/gcc/get_insns()]] timevar_pop (TV_RELOAD); timevar_push (TV_IRA); if (ira_conflicts_p && ! ira_use_lra_p) { ira_free (ira_spilled_reg_stack_slots); ira_finish_assign (); } - --[[gcc-8.3/gcc/timevar_pop()]] --[[gcc-8.3/gcc/timevar_push()]] --[[gcc-8.3/gcc/ira_free()]] --[[gcc-8.3/gcc/ira_finish_assign()]] if (internal_flag_ira_verbose > 0 && ira_dump_file != NULL && overall_cost_before != ira_overall_cost) fprintf (ira_dump_file, "+++Overall after reload %" PRId64 "\n", ira_overall_cost); flag_ira_share_spill_slots = saved_flag_ira_share_spill_slots; if (! ira_use_lra_p) { ira_destroy (); if (current_loops != NULL) { loop_optimizer_finalize (); free_dominance_info (CDI_DOMINATORS); } FOR_ALL_BB_FN (bb, cfun) bb->loop_father = NULL; current_loops = NULL; regstat_free_ri (); regstat_free_n_sets_and_refs (); } - --[[gcc-8.3/gcc/ira_destroy()]] --[[gcc-8.3/gcc/loop_optimizer_finalize()]] --[[gcc-8.3/gcc/free_dominance_info()]] --[[gcc-8.3/gcc/FOR_ALL_BB_FN()]] --[[gcc-8.3/gcc/regstat_free_ri()]] --[[gcc-8.3/gcc/regstat_free_n_sets_and_refs()]] if (optimize) cleanup_cfg (CLEANUP_EXPENSIVE); finish_reg_equiv (); bitmap_obstack_release (&ira_bitmap_obstack); #ifndef IRA_NO_OBSTACK obstack_free (&ira_obstack, NULL); #endif - --[[gcc-8.3/gcc/cleanup_cfg()]] --[[gcc-8.3/gcc/finish_reg_equiv()]] --[[gcc-8.3/gcc/bitmap_obstack_release()]] --[[gcc-8.3/gcc/obstack_free()]] /* The code after the reload has changed so much that at this point we might as well just rescan everything. Note that df_rescan_all_insns is not going to help here because it does not touch the artificial uses and defs. */ df_finish_pass (true); df_scan_alloc (NULL); df_scan_blocks (); - --[[gcc-8.3/gcc/df_finish_pass()]] --[[gcc-8.3/gcc/df_scan_alloc()]] --[[gcc-8.3/gcc/df_scan_blocks()]] if (optimize > 1) { df_live_add_problem (); df_live_set_all_dirty (); } if (optimize) df_analyze (); if (need_dce && optimize) run_fast_dce (); - --[[gcc-8.3/gcc/df_live_add_problem()]] --[[gcc-8.3/gcc/df_live_set_all_dirty()]] --[[gcc-8.3/gcc/df_analyze()]] --[[gcc-8.3/gcc/run_fast_dce()]] /* Diagnose uses of the hard frame pointer when it is used as a global register. Often we can get away with letting the user appropriate the frame pointer, but we should let them know when code generation makes that impossible. */ if (global_regs[HARD_FRAME_POINTER_REGNUM] && frame_pointer_needed) { tree decl = global_regs_decl[HARD_FRAME_POINTER_REGNUM]; error_at (DECL_SOURCE_LOCATION (current_function_decl), "frame pointer required, but reserved"); inform (DECL_SOURCE_LOCATION (decl), "for %qD", decl); } - --[[gcc-8.3/gcc/DECL_SOURCE_LOCATION()]] --[[gcc-8.3/gcc/error_at()]] --[[gcc-8.3/gcc/inform()]] /* If we are doing generic stack checking, give a warning if this function's frame size is larger than we expect. */ if (flag_stack_check == GENERIC_STACK_CHECK) { poly_int64 size = get_frame_size () + STACK_CHECK_FIXED_FRAME_SIZE; for (int i = 0; i < FIRST_PSEUDO_REGISTER; i++) if (df_regs_ever_live_p (i) && !fixed_regs[i] && call_used_regs[i]) size += UNITS_PER_WORD; if (constant_lower_bound (size) > STACK_CHECK_MAX_FRAME_SIZE) warning (0, "frame size too large for reliable stack checking"); } if (pic_offset_table_regno != INVALID_REGNUM) pic_offset_table_rtx = gen_rtx_REG (Pmode, pic_offset_table_regno); timevar_pop (TV_IRA); } - --[[gcc-8.3/gcc/poly_int64]] --[[gcc-8.3/gcc/get_frame_size()]] --[[gcc-8.3/gcc/df_regs_ever_live_p()]] --[[gcc-8.3/gcc/constant_lower_bound()]] --[[gcc-8.3/gcc/warning()]] --[[gcc-8.3/gcc/gen_rtx_REG()]] *コメント [#e3c51cf5]
