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
  18 #include "be_t.h"
  19 #include "bera_t.h"
  20 #include "benumb_t.h"
  21 #include "besched_t.h"
  22 #include "belistsched.h"
  23 #include "belive_t.h"
  24 #include "bephicongr_t.h"
  25 #include "beutil.h"
  26 #include "bechordal.h"
  27 #include "phistat.h"
  28
  29 #define N_PHASES 256
  30
  31 typedef struct _be_graph_info_t {
  32         bitset_t *applied_phases;
  33 } be_graph_info_t;
  34
  35 static size_t be_info_offset = 0;
  36
  37 #define get_irg_be_info(irg) get_irg_data(irg, be_graph_info_t, be_info_offset)
  38
  39 static int phase_ids = 1;
  40 static struct obstack obst;
  41
  42 int phase_register(phase_t *phase)
  43 {
  44         phase->id = phase_ids;
  45         return phase_ids++;
  46 }
  47
  48 void phase_applied(const ir_graph *irg, const phase_t *phase)
  49 {
  50         be_graph_info_t *info = get_irg_be_info(irg);
  51
  52         if(!info->applied_phases)
  53                 info->applied_phases = bitset_obstack_alloc(&obst, N_PHASES);
  54
  55         bitset_set(info->applied_phases, phase->id);
  56 }
  57
  58 int phase_depends_on(const ir_graph *irg, const phase_t *phase, int n, ...)
  59 {
  60         int errors = 0;
  61         int i;
  62         va_list args;
  63
  64         if(n > 0) {
  65                 const be_graph_info_t *info = get_irg_be_info(irg);
  66                 const bitset_t *applied_phases = info->applied_phases;
  67
  68                 va_start(args, n);
  69
  70                 for(i = 0; i < n; ++i) {
  71                         const phase_t *dep_phase = va_arg(args, const phase_t *);
  72
  73                         if(!applied_phases || !bitset_is_set(applied_phases, dep_phase->id)) {
  74                                 errors++;
  75                                 fprintf(stderr, "phase dependency unfulfilled: \"%s\" depends on \"%s\"\n",
  76                                                 phase->name, dep_phase->name);
  77                         }
  78                 }
  79
  80                 va_end(args);
  81
  82                 assert(errors > 0 && "There were phase dependency errors");
  83         }
  84
  85         return errors;
  86 }
  87
  88 void be_init(void)
  89 {
  90         obstack_init(&obst);
  91         be_info_offset = register_additional_graph_data(sizeof(be_graph_info_t));
  92
  93         be_sched_init();
  94         be_liveness_init();
  95         be_numbering_init();
  96         be_ra_init();
  97         be_phi_congr_class_init();
  98 }
  99
 100 extern void be_ra_chordal(ir_graph *irg);
 101
 102 static void be_main_loop(void)
 103 {
 104         int i, n;
 105
 106         for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
 107                 ir_graph *irg = get_irp_irg(i);
 108
 109                 be_numbering(irg);
 110                 list_sched(irg, trivial_selector, NULL);
 111                 be_liveness(irg);
 112                 be_ra_chordal(irg);
 113                 be_phi_congr_classes(irg);
 114
 115
 116                 dump_allocated_irg(irg);
 117
 118
 119                 be_ra_chordal_done(irg);
 120                 be_numbering_done(irg);
 121         }
 122 }
 123
 124 void be_main(int argc, const char *argv[])
 125 {
 126         be_main_loop();
 127         do_phi_statistics();
 128 }