1 /* run-rtl-passes.c - Run RTL passes directly from frontend 2 Copyright (C) 2016-2021 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #include "config.h" 21 #include "system.h" 22 #include "coretypes.h" 23 #include "target.h" 24 #include "rtl.h" 25 #include "function.h" 26 #include "basic-block.h" 27 #include "tree-pass.h" 28 #include "context.h" 29 #include "pass_manager.h" 30 #include "bitmap.h" 31 #include "df.h" 32 #include "regs.h" 33 #include "output.h" 34 #include "debug.h" /* for debug_hooks. */ 35 #include "insn-attr-common.h" /* for INSN_SCHEDULING. */ 36 #include "insn-attr.h" /* for init_sched_attrs. */ 37 #include "run-rtl-passes.h" 38 39 /* Run the backend passes, starting at the given pass. 40 Take ownership of INITIAL_PASS_NAME. */ 41 42 void run_rtl_passes(char * initial_pass_name)43run_rtl_passes (char *initial_pass_name) 44 { 45 cfun->pass_startwith = initial_pass_name; 46 max_regno = max_reg_num (); 47 48 /* cgraphunit.c normally handles this. */ 49 switch_to_section (text_section); 50 (*debug_hooks->assembly_start) (); 51 52 if (initial_pass_name) 53 { 54 /* Pass "expand" normally sets this up. */ 55 #ifdef INSN_SCHEDULING 56 init_sched_attrs (); 57 #endif 58 bitmap_obstack_initialize (NULL); 59 bitmap_obstack_initialize (®_obstack); 60 opt_pass *rest_of_compilation 61 = g->get_passes ()->get_rest_of_compilation (); 62 gcc_assert (rest_of_compilation); 63 execute_pass_list (cfun, rest_of_compilation); 64 65 opt_pass *clean_slate = g->get_passes ()->get_clean_slate (); 66 gcc_assert (clean_slate); 67 execute_pass_list (cfun, clean_slate); 68 bitmap_obstack_release (®_obstack); 69 } 70 else 71 { 72 opt_pass *clean_slate = g->get_passes ()->get_clean_slate (); 73 gcc_assert (clean_slate); 74 execute_pass_list (cfun, clean_slate); 75 } 76 77 cfun->curr_properties |= PROP_rtl; 78 free (initial_pass_name); 79 } 80