adapted to new callback
[libfirm] / ir / be / bemain.c
index 77cc93c..c954cd4 100644 (file)
@@ -28,6 +28,7 @@
 #include "iredges_t.h"
 #include "irloop_t.h"
 #include "irtools.h"
+#include "irvrfy.h"
 #include "return.h"
 #include "firmstat.h"
 
 static be_options_t be_options = {
        DUMP_NONE,                         /* dump options */
        BE_TIME_OFF,                       /* no timing */
+       BE_SCHED_SELECT_HEUR,              /* mueller heuristic selector */
+       0,                                 /* disable mris */
        "i44pc52.info.uni-karlsruhe.de",   /* ilp server */
        "cplex"                            /* ilp solver */
 };
 
+/* config file. */
+static char config_file[256] = { 0 };
+
 /* dump flags */
 static unsigned dump_flags = 0;
 
 /* verify options */
-static unsigned vrfy_option = BE_VRFY_WARN;
+static int vrfy_option = BE_VRFY_WARN;
 
 /* register allocator to use. */
 static const be_ra_t *ra = &be_ra_chordal_allocator;
@@ -81,9 +87,6 @@ static const be_ra_t *ra = &be_ra_chordal_allocator;
 /* back end instruction set architecture to use */
 static const arch_isa_if_t *isa_if = &ia32_isa_if;
 
-/* mris option */
-static int be_enable_mris = 0;
-
 #ifdef WITH_LIBCORE
 
 static lc_opt_entry_t *be_grp_root = NULL;
@@ -128,6 +131,16 @@ static const lc_opt_enum_int_items_t vrfy_items[] = {
        { NULL,     0 }
 };
 
+/* schedule selector options. */
+static const lc_opt_enum_int_items_t sched_select_items[] = {
+       { "trivial",  BE_SCHED_SELECT_TRIVIAL  },
+       { "regpress", BE_SCHED_SELECT_REGPRESS },
+       { "muchnik",  BE_SCHED_SELECT_MUCHNIK  },
+       { "heur",     BE_SCHED_SELECT_HEUR     },
+       { "hmuchnik", BE_SCHED_SELECT_HMUCHNIK },
+       { NULL,     0 }
+};
+
 static lc_opt_enum_mask_var_t dump_var = {
        &dump_flags, dump_items
 };
@@ -144,14 +157,20 @@ static lc_opt_enum_int_var_t vrfy_var = {
        &vrfy_option, vrfy_items
 };
 
+static lc_opt_enum_int_var_t sched_select_var = {
+       &be_options.sched_select, sched_select_items
+};
+
 static const lc_opt_table_entry_t be_main_options[] = {
-       LC_OPT_ENT_ENUM_MASK("dump",     "dump irg on several occasions",     &dump_var),
-       LC_OPT_ENT_ENUM_PTR ("ra",       "register allocator",                &ra_var),
-       LC_OPT_ENT_ENUM_PTR ("isa",      "the instruction set architecture",  &isa_var),
-       LC_OPT_ENT_NEGBOOL  ("noomitfp", "do not omit frame pointer",         &be_omit_fp),
-       LC_OPT_ENT_BOOL     ("mris",     "enable mris schedule preparation",  &be_enable_mris),
-       LC_OPT_ENT_ENUM_PTR ("vrfy",     "verify the backend irg (off, warn, assert)",  &vrfy_var),
-       LC_OPT_ENT_BOOL     ("time",     "get backend timing statistics",     &be_options.timing),
+       LC_OPT_ENT_STR      ("config",       "read another config file containing backend options",                 config_file, sizeof(config_file)),
+       LC_OPT_ENT_ENUM_MASK("dump",         "dump irg on several occasions",                                       &dump_var),
+       LC_OPT_ENT_ENUM_PTR ("ra",           "register allocator",                                                  &ra_var),
+       LC_OPT_ENT_ENUM_PTR ("isa",          "the instruction set architecture",                                    &isa_var),
+       LC_OPT_ENT_NEGBOOL  ("noomitfp",     "do not omit frame pointer",                                           &be_omit_fp),
+       LC_OPT_ENT_ENUM_PTR ("vrfy",         "verify the backend irg (off, warn, assert)",                          &vrfy_var),
+       LC_OPT_ENT_BOOL     ("time",         "get backend timing statistics",                                       &be_options.timing),
+       LC_OPT_ENT_BOOL     ("sched.mris",   "enable mris schedule preparation",                                    &be_options.mris),
+       LC_OPT_ENT_ENUM_PTR ("sched.select", "schedule node selector (trivial, regpress, muchnik, heur, hmuchnik)", &sched_select_var),
 
 #ifdef WITH_ILP
        LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
@@ -315,7 +334,7 @@ static void prepare_graph(be_irg_t *birg)
        compute_doms(irg);
 
        /* Ensure, that the ir_edges are computed. */
-       edges_activate(irg);
+       edges_assure(irg);
 
        /* check, if the dominance property is fulfilled. */
        be_check_dominance(irg);
@@ -324,6 +343,39 @@ static void prepare_graph(be_irg_t *birg)
        be_phi_handler_reset(birg->main_env->phi_handler);
 }
 
+#ifdef WITH_LIBCORE
+
+#define BE_TIMER_PUSH(timer)                                                        \
+       if (be_options.timing == BE_TIME_ON) {                                          \
+               int res = lc_timer_push(timer);                                             \
+               if (vrfy_option == BE_VRFY_ASSERT)                                          \
+                       assert(res && "Timer already on stack, cannot be pushed twice.");       \
+               else if (vrfy_option == BE_VRFY_WARN && ! res)                              \
+                       fprintf(stderr, "Timer %s already on stack, cannot be pushed twice.\n", \
+                               lc_timer_get_name(timer));                                          \
+       }
+#define BE_TIMER_POP(timer)                                                                    \
+       if (be_options.timing == BE_TIME_ON) {                                                     \
+               lc_timer_t *tmp = lc_timer_pop();                                                      \
+               if (vrfy_option == BE_VRFY_ASSERT)                                                     \
+                       assert(tmp == timer && "Attempt to pop wrong timer.");                             \
+               else if (vrfy_option == BE_VRFY_WARN && tmp != timer)                                  \
+                       fprintf(stderr, "Attempt to pop wrong timer. %s is on stack, trying to pop %s.\n", \
+                               lc_timer_get_name(tmp), lc_timer_get_name(timer));                             \
+               timer = tmp;                                                                           \
+       }
+
+#define BE_TIMER_ONLY(code)   do { if (be_options.timing == BE_TIME_ON) { code; } } while(0)
+
+#else
+
+#define BE_TIMER_PUSH(timer)
+#define BE_TIMER_POP(timer)
+#define BE_TIMER_ONLY(code)
+
+#endif /* WITH_LIBCORE */
+
+
 /**
  * The Firm backend main loop.
  * Do architecture specific lowering for all graphs
@@ -339,6 +391,8 @@ static void be_main_loop(FILE *file_handle)
        unsigned num_nodes_b = 0;
        unsigned num_nodes_a = 0;
        unsigned num_nodes_r = 0;
+
+#ifdef WITH_LIBCORE
        lc_timer_t *t_prolog, *t_abi, *t_codegen, *t_sched, *t_constr, *t_regalloc, *t_finish, *t_emit, *t_other, *t_verify;
        be_ra_timer_t *ra_timer;
 
@@ -354,6 +408,7 @@ static void be_main_loop(FILE *file_handle)
                t_verify   = lc_timer_register("verify",   "graph verification");
                t_other    = lc_timer_register("other",    "other");
        }
+#endif /* WITH_LIBCORE */
 
        be_init_env(&env, file_handle);
 
@@ -362,28 +417,6 @@ static void be_main_loop(FILE *file_handle)
        /* for debugging, anchors helps */
        // dump_all_anchors(1);
 
-#define BE_TIMER_PUSH(timer)                                                        \
-       if (be_options.timing == BE_TIME_ON) {                                          \
-               int res = lc_timer_push(timer);                                             \
-               if (vrfy_option == BE_VRFY_ASSERT)                                          \
-                       assert(res && "Timer already on stack, cannot be pushed twice.");       \
-               else if (vrfy_option == BE_VRFY_WARN && ! res)                              \
-                       fprintf(stderr, "Timer %s already on stack, cannot be pushed twice.\n", \
-                               lc_timer_get_name(timer));                                          \
-       }
-#define BE_TIMER_POP(timer)                                                                    \
-       if (be_options.timing == BE_TIME_ON) {                                                     \
-               lc_timer_t *tmp = lc_timer_pop();                                                      \
-               if (vrfy_option == BE_VRFY_ASSERT)                                                     \
-                       assert(tmp == timer && "Attempt to pop wrong timer.");                             \
-               else if (vrfy_option == BE_VRFY_WARN && tmp != timer)                                  \
-                       fprintf(stderr, "Attempt to pop wrong timer. %s is on stack, trying to pop %s.\n", \
-                               lc_timer_get_name(tmp), lc_timer_get_name(timer));                             \
-               timer = tmp;                                                                           \
-       }
-
-#define BE_TIMER_ONLY(code)   if (be_options.timing == BE_TIME_ON) do { code; } while(0)
-
        /* For all graphs */
        for (i = 0, n = get_irp_n_irgs(); i < n; ++i) {
                ir_graph *irg = get_irp_irg(i);
@@ -392,7 +425,7 @@ static void be_main_loop(FILE *file_handle)
                optimization_state_t state;
 
                /* stop and reset timers */
-               if (be_options.timing == BE_TIME_ON) {
+               BE_TIMER_ONLY(
                        LC_STOP_AND_RESET_TIMER(t_prolog);
                        LC_STOP_AND_RESET_TIMER(t_abi);
                        LC_STOP_AND_RESET_TIMER(t_codegen);
@@ -403,7 +436,7 @@ static void be_main_loop(FILE *file_handle)
                        LC_STOP_AND_RESET_TIMER(t_emit);
                        LC_STOP_AND_RESET_TIMER(t_verify);
                        LC_STOP_AND_RESET_TIMER(t_other);
-               }
+               );
                BE_TIMER_PUSH(t_other);   /* t_other */
 
                BE_TIMER_ONLY(num_nodes_b = get_num_reachable_nodes(irg));
@@ -411,6 +444,9 @@ static void be_main_loop(FILE *file_handle)
                birg.irg      = irg;
                birg.main_env = &env;
 
+               edges_deactivate_kind(irg, EDGE_KIND_DEP);
+               edges_activate_kind(irg, EDGE_KIND_DEP);
+
                DBG((env.dbg, LEVEL_2, "====> IRG: %F\n", irg));
                dump(DUMP_INITIAL, irg, "-begin", dump_ir_block_graph);
 
@@ -474,7 +510,7 @@ static void be_main_loop(FILE *file_handle)
 
                /* schedule the irg */
                BE_TIMER_PUSH(t_sched);
-               list_sched(&birg, be_enable_mris);
+               list_sched(&birg, &be_options);
                BE_TIMER_POP(t_sched);
 
                dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
@@ -522,9 +558,9 @@ static void be_main_loop(FILE *file_handle)
                BE_TIMER_POP(t_codegen);
 
                /* Do register allocation */
-               BE_TIMER_ONLY(lc_timer_start(t_regalloc));
+               BE_TIMER_PUSH(t_regalloc);
                ra_timer = ra->allocate(&birg);
-               BE_TIMER_ONLY(lc_timer_stop(t_regalloc));
+               BE_TIMER_PUSH(t_regalloc);
 
                dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
                be_do_stat_nodes(irg, "06 Register Allocation");
@@ -536,12 +572,32 @@ static void be_main_loop(FILE *file_handle)
 
                /* fix stack offsets */
                BE_TIMER_PUSH(t_abi);
+               be_abi_fix_stack_nodes(birg.abi, NULL);
+               be_remove_dead_nodes_from_schedule(birg.irg);
                be_abi_fix_stack_bias(birg.abi);
                BE_TIMER_POP(t_abi);
 
-               /* check schedule */
+               BE_TIMER_PUSH(t_finish);
+               arch_code_generator_finish(birg.cg);
+               BE_TIMER_POP(t_finish);
+
+               dump(DUMP_FINAL, irg, "-finish", dump_ir_block_graph_sched);
+
+               /* check schedule and register allocation */
                BE_TIMER_PUSH(t_verify);
-               be_sched_vrfy(birg.irg, vrfy_option);
+               if (vrfy_option == BE_VRFY_WARN) {
+                       //irg_verify(birg.irg, VRFY_ENFORCE_SSA);
+                       be_check_dominance(birg.irg);
+                       be_verify_schedule(birg.irg);
+                       be_verify_register_allocation(env.arch_env, birg.irg);
+               }
+               else if (vrfy_option == BE_VRFY_ASSERT) {
+                       //assert(irg_verify(birg.irg, VRFY_ENFORCE_SSA) && "irg verification failed");
+                       assert(be_check_dominance(birg.irg) && "Dominance verification failed");
+                       assert(be_verify_schedule(birg.irg) && "Schedule verification failed");
+                       assert(be_verify_register_allocation(env.arch_env, birg.irg)
+                              && "register allocation verification failed");
+               }
                BE_TIMER_POP(t_verify);
 
                /* emit assembler code */
@@ -559,16 +615,11 @@ static void be_main_loop(FILE *file_handle)
                restore_optimization_state(&state);
 
                BE_TIMER_ONLY(num_nodes_a = get_num_reachable_nodes(irg));
-
-               /* switched off due to statistics (statistic module needs all irgs) */
-               if (! stat_is_active())
-                       free_ir_graph(irg);
-
                BE_TIMER_POP(t_other);
 
 #define LC_EMIT(timer)    printf("%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0)
 #define LC_EMIT_RA(timer) printf("\t%-20s: %.3lf msec\n", lc_timer_get_description(timer), (double)lc_timer_elapsed_usec(timer) / 1000.0)
-               if (be_options.timing == BE_TIME_ON) {
+               BE_TIMER_ONLY(
                        printf("==>> IRG %s <<==\n", get_entity_name(get_irg_entity(irg)));
                        printf("# nodes at begin:  %u\n", num_nodes_b);
                        printf("# nodes before ra: %u\n", num_nodes_r);
@@ -582,6 +633,7 @@ static void be_main_loop(FILE *file_handle)
                        LC_EMIT_RA(ra_timer->t_prolog);
                        LC_EMIT_RA(ra_timer->t_live);
                        LC_EMIT_RA(ra_timer->t_spill);
+                        LC_EMIT_RA(ra_timer->t_spillslots);
                        LC_EMIT_RA(ra_timer->t_color);
                        LC_EMIT_RA(ra_timer->t_ifg);
                        LC_EMIT_RA(ra_timer->t_copymin);
@@ -593,8 +645,14 @@ static void be_main_loop(FILE *file_handle)
                        LC_EMIT(t_emit);
                        LC_EMIT(t_verify);
                        LC_EMIT(t_other);
-               }
+               );
+#undef LC_EMIT_RA
 #undef LC_EMIT
+
+        /* switched off due to statistics (statistic module needs all irgs) */
+               if (! stat_is_active())
+                       free_ir_graph(irg);
+
        }
        be_done_env(&env);
 
@@ -608,6 +666,18 @@ void be_main(FILE *file_handle)
 {
 #ifdef WITH_LIBCORE
        lc_timer_t *t;
+#endif /* WITH_LIBCORE */
+
+#ifdef WITH_LIBCORE
+       /* The user specified another config file to read. do that now. */
+       if(strlen(config_file) > 0) {
+               FILE *f;
+
+               if((f = fopen(config_file, "rt")) != NULL) {
+                       lc_opt_from_file(config_file, f, NULL);
+                       fclose(f);
+               }
+       }
 
        if (be_options.timing == BE_TIME_ON) {
                t = lc_timer_register("bemain", "measure complete bemain loop");
@@ -623,7 +693,7 @@ void be_main(FILE *file_handle)
        /* never build code for pseudo irgs */
        set_visit_pseudo_irgs(0);
 
-       be_node_init();
+       be_node_init();
        be_main_loop(file_handle);
 
 #ifdef WITH_LIBCORE
@@ -650,3 +720,18 @@ const char *be_retrieve_dbg_info(const dbg_info *dbg, unsigned *line) {
        *line = 0;
        return NULL;
 }
+
+int be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
+{
+       if(bs == NULL)
+               bs = bitset_alloca(cls->n_regs);
+       else
+               bitset_clear_all(bs);
+
+       assert(bitset_size(bs) == (unsigned) cls->n_regs);
+       arch_put_non_ignore_regs(birg->main_env->arch_env, cls, bs);
+       bitset_flip_all(bs);
+       be_abi_put_ignore_regs(birg->abi, cls, bs);
+       return bitset_popcnt(bs);
+
+}