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