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