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 "bearch.h"
  28 #include "becopyoptmain.h"
  29
  30 #include "beasm_dump_globals.h"
  31 #include "beasm_asm_gnu.h"
  32
  33 #undef DUMP_ALLOCATED
  34 #undef DUMP_LOCALIZED
  35
  36 #define N_PHASES 256
  37
  38 typedef struct _be_graph_info_t {
  39         bitset_t *applied_phases;
  40 } be_graph_info_t;
  41
  42 static size_t be_info_offset = 0;
  43
  44 #define get_irg_be_info(irg) get_irg_data(irg, be_graph_info_t, be_info_offset)
  45
  46 static int phase_ids = 1;
  47 static struct obstack obst;
  48
  49 int phase_register(phase_t *phase)
  50 {
  51         phase->id = phase_ids;
  52         return phase_ids++;
  53 }
  54
  55 void phase_applied(const ir_graph *irg, const phase_t *phase)
  56 {
  57         be_graph_info_t *info = get_irg_be_info(irg);
  58
  59         if(!info->applied_phases)
  60                 info->applied_phases = bitset_obstack_alloc(&obst, N_PHASES);
  61
  62         bitset_set(info->applied_phases, phase->id);
  63 }
  64
  65 int phase_depends_on(const ir_graph *irg, const phase_t *phase, int n, ...)
  66 {
  67         int errors = 0;
  68         int i;
  69         va_list args;
  70
  71         if(n > 0) {
  72                 const be_graph_info_t *info = get_irg_be_info(irg);
  73                 const bitset_t *applied_phases = info->applied_phases;
  74
  75                 va_start(args, n);
  76
  77                 for(i = 0; i < n; ++i) {
  78                         const phase_t *dep_phase = va_arg(args, const phase_t *);
  79
  80                         if(!applied_phases || !bitset_is_set(applied_phases, dep_phase->id)) {
  81                                 errors++;
  82                                 fprintf(stderr, "phase dependency unfulfilled: \"%s\" depends on \"%s\"\n",
  83                                                 phase->name, dep_phase->name);
  84                         }
  85                 }
  86
  87                 va_end(args);
  88
  89                 assert(errors > 0 && "There were phase dependency errors");
  90         }
  91
  92         return errors;
  93 }
  94
  95 void be_init(void)
  96 {
  97         obstack_init(&obst);
  98         be_info_offset = register_additional_graph_data(sizeof(be_graph_info_t));
  99
 100         be_sched_init();
 101         be_liveness_init();
 102         be_numbering_init();
 103         be_ra_init();
 104         be_ra_chordal_init();
 105         be_copy_opt_init();
 106 }
 107
 108 /* The preliminary Firm backend isa. */
 109 extern arch_isa_if_t arch_isa_if_firm;
 110
 111 static void be_main_loop(void)
 112 {
 113         int i, n;
 114   const arch_isa_if_t *isa = &arch_isa_if_firm;
 115
 116         for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
 117     int j, m;
 118
 119                 ir_graph *irg = get_irp_irg(i);
 120
 121                 localize_consts(irg);
 122 #ifdef DUMP_LOCALIZED
 123                 dump_consts_local(0);
 124                 dump_ir_block_graph(irg, "-local-const");
 125 #endif
 126                 be_numbering(irg);
 127
 128     /* Schedule the graphs. */
 129                 list_sched(irg, trivial_selector);
 130
 131     /* Liveness analysis */
 132     be_liveness(irg);
 133
 134     /*
 135      * Perform the following for each register
 136      * class.
 137      */
 138     for(j = 0, m = isa->get_n_reg_class(); j < m; ++j) {
 139       const arch_register_class_t *cls = isa->get_reg_class(j);
 140
 141       be_ra_chordal(irg, isa, cls);
 142
 143 #ifdef DUMP_ALLOCATED
 144       dump_allocated_irg(irg, "");
 145 #endif
 146       // be_copy_opt(irg);
 147       be_ra_chordal_done(irg);
 148     }
 149
 150     be_numbering_done(irg);
 151         }
 152 }
 153
 154 void be_main(int argc, const char *argv[])
 155 {
 156   assembler_t *gnu_assembler;
 157   FILE *asm_output_file;
 158
 159         be_main_loop();
 160         gnu_assembler = gnuasm_create_assembler();
 161         asm_output_file = fopen("asm_output.asm", "w");
 162
 163         asm_dump_globals(gnu_assembler);
 164         gnuasm_dump(gnu_assembler, asm_output_file);
 165         gnuasm_delete_assembler(gnu_assembler);
 166         fclose(asm_output_file);
 167 }