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
  19 #include "be_t.h"
  20 #include "bera_t.h"
  21 #include "benumb_t.h"
  22 #include "besched_t.h"
  23 #include "belistsched.h"
  24 #include "belive_t.h"
  25 #include "beutil.h"
  26 #include "bechordal.h"
  27 #include "bechordal.h"
  28 #include "bephiopt.h"
  29 #include "phistat.h"
  30
  31 #include "beasm_dump_globals.h"
  32 #include "beasm_asm_gnu.h"
  33
  34 #define DUMP_ALLOCATED
  35 #undef DUMP_LOCALIZED
  36
  37 #define N_PHASES 256
  38
  39 typedef struct _be_graph_info_t {
  40         bitset_t *applied_phases;
  41 } be_graph_info_t;
  42
  43 static size_t be_info_offset = 0;
  44
  45 #define get_irg_be_info(irg) get_irg_data(irg, be_graph_info_t, be_info_offset)
  46
  47 static int phase_ids = 1;
  48 static struct obstack obst;
  49
  50 int phase_register(phase_t *phase)
  51 {
  52         phase->id = phase_ids;
  53         return phase_ids++;
  54 }
  55
  56 void phase_applied(const ir_graph *irg, const phase_t *phase)
  57 {
  58         be_graph_info_t *info = get_irg_be_info(irg);
  59
  60         if(!info->applied_phases)
  61                 info->applied_phases = bitset_obstack_alloc(&obst, N_PHASES);
  62
  63         bitset_set(info->applied_phases, phase->id);
  64 }
  65
  66 int phase_depends_on(const ir_graph *irg, const phase_t *phase, int n, ...)
  67 {
  68         int errors = 0;
  69         int i;
  70         va_list args;
  71
  72         if(n > 0) {
  73                 const be_graph_info_t *info = get_irg_be_info(irg);
  74                 const bitset_t *applied_phases = info->applied_phases;
  75
  76                 va_start(args, n);
  77
  78                 for(i = 0; i < n; ++i) {
  79                         const phase_t *dep_phase = va_arg(args, const phase_t *);
  80
  81                         if(!applied_phases || !bitset_is_set(applied_phases, dep_phase->id)) {
  82                                 errors++;
  83                                 fprintf(stderr, "phase dependency unfulfilled: \"%s\" depends on \"%s\"\n",
  84                                                 phase->name, dep_phase->name);
  85                         }
  86                 }
  87
  88                 va_end(args);
  89
  90                 assert(errors > 0 && "There were phase dependency errors");
  91         }
  92
  93         return errors;
  94 }
  95
  96 void be_init(void)
  97 {
  98         obstack_init(&obst);
  99         be_info_offset = register_additional_graph_data(sizeof(be_graph_info_t));
 100
 101         be_sched_init();
 102         be_liveness_init();
 103         be_numbering_init();
 104         be_ra_init();
 105         be_ra_chordal_init();
 106         be_phi_opt_init();
 107 }
 108
 109 extern void be_ra_chordal(ir_graph *irg);
 110
 111 static void be_main_loop(void)
 112 {
 113         int i, n;
 114
 115         for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
 116                 ir_graph *irg = get_irp_irg(i);
 117
 118                 localize_consts(irg);
 119 #ifdef DUMP_LOCALIZED
 120                 dump_consts_local(0);
 121                 dump_ir_block_graph(irg, "-local-const");
 122 #endif
 123                 be_numbering(irg);
 124                 list_sched(irg, trivial_selector, NULL);
 125                 be_liveness(irg);
 126                 be_ra_chordal(irg);
 127
 128 #ifdef DUMP_ALLOCATED
 129                 dump_allocated_irg(irg, "");
 130 #endif
 131                 //be_phi_opt(irg);
 132
 133                 be_ra_chordal_done(irg);
 134                 be_numbering_done(irg);
 135         }
 136 }
 137
 138 void be_main(int argc, const char *argv[])
 139 {
 140   assembler_t *gnu_assembler;
 141   FILE *asm_output_file;
 142
 143         be_main_loop();
 144         gnu_assembler = gnuasm_create_assembler();
 145         asm_output_file = fopen("asm_output.asm", "w");
 146
 147         asm_dump_globals ( gnu_assembler );
 148         gnuasm_dump ( gnu_assembler, asm_output_file );
 149         gnuasm_delete_assembler ( gnu_assembler );
 150         fclose(asm_output_file);
 151 }