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 "irgraph.h"
  17 #include "irdump.h"
  18 #include "phiclass.h"
  19
  20 #include "be_t.h"
  21 #include "bechordal_t.h"
  22 #include "benumb_t.h"
  23 #include "besched_t.h"
  24 #include "belistsched.h"
  25 #include "belive_t.h"
  26 #include "beutil.h"
  27 #include "bechordal.h"
  28 #include "bearch.h"
  29 #include "becopyoptmain.h"
  30 #include "becopystat.h"
  31 #include "bearch_firm.h"
  32
  33 #include "beasm_dump_globals.h"
  34 #include "beasm_asm_gnu.h"
  35
  36 #undef DUMP_ALLOCATED
  37 #undef DUMP_LOCALIZED
  38
  39 #define N_PHASES 256
  40
  41
  42 void be_init(void)
  43 {
  44         be_sched_init();
  45         be_liveness_init();
  46         be_numbering_init();
  47         be_ra_chordal_init();
  48         be_copy_opt_init();
  49 #ifdef DO_STAT
  50         stat_init();
  51 #endif
  52 }
  53
  54 static void be_init_arch_env(arch_env_t *env)
  55 {
  56   arch_env_init(env, &firm_isa);
  57   arch_env_add_irn_handler(env, &firm_irn_handler);
  58
  59   env->isa->init();
  60 }
  61
  62 static void be_main_loop(void)
  63 {
  64         int i, n;
  65   arch_env_t env;
  66   const arch_isa_if_t *isa;
  67
  68   be_init_arch_env(&env);
  69
  70   isa = arch_env_get_isa(&env);
  71
  72         for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
  73                 int j, m;
  74                 ir_graph *irg = get_irp_irg(i);
  75
  76                 localize_consts(irg);
  77 #ifdef DUMP_LOCALIZED
  78                 dump_consts_local(0);
  79                 dump_ir_block_graph(irg, "-local-const");
  80 #endif
  81                 be_numbering(irg);
  82
  83                 /* Schedule the graphs. */
  84                 list_sched(irg, trivial_selector);
  85
  86                 /* Liveness analysis */
  87                 be_liveness(irg);
  88
  89 #ifdef DO_STAT
  90                 stat_reset();
  91 #endif
  92                 /* Perform the following for each register class. */
  93                 for(j = 0, m = isa->get_n_reg_class(); j < m; ++j) {
  94       be_chordal_env_t *chordal_env;
  95                         const arch_register_class_t *cls = isa->get_reg_class(j);
  96
  97                         chordal_env = be_ra_chordal(irg, &env, cls);
  98
  99 #ifdef DUMP_ALLOCATED
 100                         dump_allocated_irg(&env, irg, "");
 101 #endif
 102 #ifdef DO_STAT
 103                         stat_collect_irg(irg);
 104 #endif
 105                         be_copy_opt(chordal_env, &env, cls);
 106                         be_ra_chordal_done(chordal_env);
 107                 }
 108 #ifdef DO_STAT
 109                 stat_dump(irg);
 110 #endif
 111             be_numbering_done(irg);
 112         }
 113 }
 114
 115 void be_main(int argc, const char *argv[])
 116 {
 117         assembler_t *gnu_assembler;
 118         FILE *asm_output_file;
 119
 120         be_main_loop();
 121         gnu_assembler = gnuasm_create_assembler();
 122         asm_output_file = fopen("asm_output.asm", "w");
 123
 124         asm_dump_globals(gnu_assembler);
 125         gnuasm_dump(gnu_assembler, asm_output_file);
 126         gnuasm_delete_assembler(gnu_assembler);
 127         fclose(asm_output_file);
 128 }