nsz Git - libfirm/blob - ir/be/bemain.c

   1 /**
   2  * Backend driver.
   3  * @author Sebastian Hack
   4  * @date 25.11.2004
   5  */
   6 #ifdef HAVE_CONFIG_H
   7 #include "config.h"
   8 #endif
   9
  10 #include <stdarg.h>
  11
  12 #include "obst.h"
  13 #include "bitset.h"
  14
  15 #include "irprog.h"
  16 #include "irgopt.h"
  17 #include "irgraph.h"
  18 #include "irdump.h"
  19 #include "phiclass.h"
  20
  21 #include "be_t.h"
  22 #include "bechordal_t.h"
  23 #include "benumb_t.h"
  24 #include "besched_t.h"
  25 #include "belistsched.h"
  26 #include "belive_t.h"
  27 #include "beutil.h"
  28 #include "bechordal.h"
  29 #include "bearch.h"
  30 #include "becopyoptmain.h"
  31 #include "becopystat.h"
  32 #include "bessadestr.h"
  33 #include "bearch_firm.h"
  34 #include "benode_t.h"
  35
  36 #include "beasm_dump_globals.h"
  37 #include "beasm_asm_gnu.h"
  38
  39 #undef DUMP_ALLOCATED
  40 #undef DUMP_LOCALIZED
  41
  42 #define N_PHASES 256
  43
  44
  45 void be_init(void)
  46 {
  47         be_sched_init();
  48         be_liveness_init();
  49         be_numbering_init();
  50         be_ra_chordal_init();
  51         be_copy_opt_init();
  52         copystat_init();
  53 }
  54
  55 static be_main_env_t *be_init_env(be_main_env_t *env)
  56 {
  57   const arch_isa_if_t *isa = &firm_isa;
  58
  59   obstack_init(&env->obst);
  60
  61   env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
  62   arch_env_init(env->arch_env, isa);
  63   env->arch_env->isa->init();
  64
  65   env->node_factory = obstack_alloc(&env->obst, sizeof(*env->node_factory));
  66   be_node_factory_init(env->node_factory, isa);
  67
  68   arch_env_add_irn_handler(env->arch_env, &firm_irn_handler);
  69   arch_env_add_irn_handler(env->arch_env,
  70       be_node_get_irn_handler(env->node_factory));
  71
  72   return env;
  73 }
  74
  75 be_main_session_env_t *be_init_session_env(be_main_session_env_t *env,
  76     be_main_env_t *main_env, ir_graph *irg)
  77 {
  78   env->main_env = main_env;
  79   env->irg = irg;
  80
  81   return env;
  82 }
  83
  84 static void be_main_loop(void)
  85 {
  86         int i, n;
  87         be_main_env_t env;
  88         const arch_isa_if_t *isa;
  89
  90         be_init_env(&env);
  91         isa = arch_env_get_isa(env.arch_env);
  92
  93         /* For all graphs */
  94         for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
  95                 int j, m;
  96                 ir_graph *irg = get_irp_irg(i);
  97                 be_main_session_env_t session;
  98
  99                 be_init_session_env(&session, &env, irg);
 100
 101                 remove_critical_cf_edges(irg);
 102
 103                 localize_consts(irg);
 104 #ifdef DUMP_LOCALIZED
 105                 dump_consts_local(0);
 106                 dump_ir_block_graph(irg, "-local-const");
 107 #endif
 108                 be_numbering(irg);
 109
 110                 /* Schedule the graphs. */
 111                 list_sched(irg, trivial_selector);
 112
 113                 /* Liveness analysis */
 114                 be_liveness(irg);
 115
 116                 copystat_reset();
 117                 copystat_collect_irg(irg, env.arch_env);
 118                 /* Perform the following for each register class. */
 119                 for(j = 0, m = isa->get_n_reg_class(); j < m; ++j) {
 120                         be_chordal_env_t *chordal_env;
 121                         const arch_register_class_t *cls = isa->get_reg_class(j);
 122
 123                         chordal_env = be_ra_chordal(irg, env.arch_env, cls);
 124
 125 #ifdef DUMP_ALLOCATED
 126                         dump_allocated_irg(env.arch_env, irg, "");
 127 #endif
 128                         copystat_collect_cls(chordal_env);
 129
 130                         be_copy_opt(chordal_env);
 131                         be_ssa_destruction(&session, chordal_env);
 132                         be_ra_chordal_done(chordal_env);
 133                 }
 134                 copystat_dump_pretty(irg);
 135             be_numbering_done(irg);
 136         }
 137 }
 138
 139 void be_main(int argc, const char *argv[])
 140 {
 141         assembler_t *gnu_assembler;
 142         FILE *asm_output_file;
 143
 144         be_main_loop();
 145         gnu_assembler = gnuasm_create_assembler();
 146         asm_output_file = fopen("asm_output.asm", "w");
 147
 148         asm_dump_globals(gnu_assembler);
 149         gnuasm_dump(gnu_assembler, asm_output_file);
 150         gnuasm_delete_assembler(gnu_assembler);
 151         fclose(asm_output_file);
 152 }