make schedule dumper more robust/cleanup
[libfirm] / ir / be / bemain.c
index 409fa37..74f8294 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -22,7 +22,6 @@
  * @brief       Main Backend driver.
  * @author      Sebastian Hack
  * @date        25.11.2004
- * @version     $Id$
  */
 #include "config.h"
 
@@ -34,7 +33,7 @@
 
 #include "obst.h"
 #include "bitset.h"
-
+#include "statev.h"
 #include "irprog.h"
 #include "irgopt.h"
 #include "irgraph.h"
 #include "irprintf.h"
 #include "iroptimize.h"
 #include "firmstat.h"
-#include "execfreq.h"
+#include "execfreq_t.h"
 #include "irprofile.h"
 #include "irpass_t.h"
+#include "ircons.h"
 
 #include "bearch.h"
 #include "be_t.h"
 #include "bessadestr.h"
 #include "beabi.h"
 #include "belower.h"
-#include "beschedmris.h"
 #include "bestat.h"
 #include "beverify.h"
-#include "be_dbgout.h"
 #include "beirg.h"
 #include "bestack.h"
+#include "beemitter.h"
 
 #define NEW_ID(s) new_id_from_chars(s, sizeof(s) - 1)
 
 /* options visible for anyone */
-static be_options_t be_options = {
+be_options_t be_options = {
        DUMP_NONE,                         /* dump flags */
        BE_TIME_OFF,                       /* no timing */
-       0,                                 /* no opt profile */
+       false,                             /* profile_generate */
+       false,                             /* profile_use */
        0,                                 /* try to omit frame pointer */
        0,                                 /* create PIC code */
-       0,                                 /* create gprof compatible profiling code */
        BE_VERIFY_WARN,                    /* verification level: warn */
-       "linux",                           /* target OS name */
-       "i44pc52.info.uni-karlsruhe.de",   /* ilp server */
-       "cplex",                           /* ilp solver */
+       "",                                /* ilp server */
+       "",                                /* ilp solver */
        0,                                 /* enable statistic event dumping */
        "",                                /* print stat events */
+       1,                                 /* verbose assembler output */
 };
 
-/* config file. */
-static char config_file[256] = { 0 };
-
 /* back end instruction set architecture to use */
 static const arch_isa_if_t *isa_if = NULL;
 
@@ -130,31 +126,42 @@ static lc_opt_enum_int_var_t verify_var = {
 };
 
 static const lc_opt_table_entry_t be_main_options[] = {
-       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_BOOL     ("omitfp",     "omit frame pointer",                                  &be_options.omit_fp),
        LC_OPT_ENT_BOOL     ("pic",        "create PIC code",                                     &be_options.pic),
-       LC_OPT_ENT_BOOL     ("gprof",      "create gprof profiling code",                         &be_options.gprof),
-       LC_OPT_ENT_ENUM_PTR ("verify",     "verify the backend irg",                              &verify_var),
+       LC_OPT_ENT_ENUM_INT ("verify",     "verify the backend irg",                              &verify_var),
        LC_OPT_ENT_BOOL     ("time",       "get backend timing statistics",                       &be_options.timing),
-       LC_OPT_ENT_BOOL     ("profile",    "instrument the code for execution count profiling",   &be_options.opt_profile),
-       LC_OPT_ENT_STR      ("os",         "specify target operating system",                     &be_options.target_os, sizeof(be_options.target_os)),
-#ifdef FIRM_STATISTICS
+       LC_OPT_ENT_BOOL     ("profilegenerate", "instrument the code for execution count profiling",   &be_options.opt_profile_generate),
+       LC_OPT_ENT_BOOL     ("profileuse",      "use existing profile data",                           &be_options.opt_profile_use),
        LC_OPT_ENT_BOOL     ("statev",     "dump statistic events",                               &be_options.statev),
-       LC_OPT_ENT_STR      ("filtev",     "filter for stat events (regex if support is active",  &be_options.filtev, sizeof(be_options.filtev)),
-#endif
+       LC_OPT_ENT_STR      ("filtev",     "filter for stat events (regex if support is active",   be_options.filtev),
+       LC_OPT_ENT_BOOL     ("verboseasm", "enable verbose assembler output",                     &be_options.verbose_asm),
 
-#ifdef WITH_ILP
-       LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
-       LC_OPT_ENT_STR ("ilp.solver", "the ilp solver name", be_options.ilp_solver, sizeof(be_options.ilp_solver)),
-#endif /* WITH_ILP */
+       LC_OPT_ENT_STR("ilp.server", "the ilp server name", be_options.ilp_server),
+       LC_OPT_ENT_STR("ilp.solver", "the ilp solver name", be_options.ilp_solver),
        LC_OPT_LAST
 };
 
-static be_module_list_entry_t *isa_ifs = NULL;
+static be_module_list_entry_t *isa_ifs         = NULL;
+static bool                    isa_initialized = false;
+
+asm_constraint_flags_t asm_constraint_flags[256];
 
+static void initialize_isa(void)
+{
+       if (isa_initialized)
+               return;
+       isa_if->init();
+       isa_initialized = true;
+}
 
-unsigned short asm_constraint_flags[256];
+static void finish_isa(void)
+{
+       if (isa_initialized) {
+               isa_if->finish();
+               isa_initialized = false;
+       }
+}
 
 void be_init_default_asm_constraint_flags(void)
 {
@@ -219,10 +226,12 @@ void be_init_default_asm_constraint_flags(void)
 
 asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
 {
-       asm_constraint_flags_t  flags = 0;
+       asm_constraint_flags_t  flags = ASM_CONSTRAINT_FLAG_NONE;
        const char             *c;
        asm_constraint_flags_t  tflags;
 
+       initialize_isa();
+
        for (c = constraint; *c != '\0'; ++c) {
                switch (*c) {
                case '#':
@@ -272,6 +281,8 @@ asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
 
 int be_is_valid_clobber(const char *clobber)
 {
+       initialize_isa();
+
        /* memory is a valid clobber. (the frontend has to detect this case too,
         * because it has to add memory edges to the asm) */
        if (strcmp(clobber, "memory") == 0)
@@ -291,7 +302,7 @@ void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
        be_add_module_to_list(&isa_ifs, name, (void*) isa);
 }
 
-void be_opt_register(void)
+static void be_opt_register(void)
 {
        lc_opt_entry_t *be_grp;
        static int run_once = 0;
@@ -340,38 +351,69 @@ void firm_be_init(void)
 /* Finalize the Firm backend. */
 void firm_be_finish(void)
 {
+       finish_isa();
        be_quit_modules();
 }
 
 /* Returns the backend parameter */
 const backend_params *be_get_backend_param(void)
 {
+       initialize_isa();
        return isa_if->get_params();
 }
 
+int be_is_big_endian(void)
+{
+       return be_get_backend_param()->byte_order_big_endian;
+}
+
+unsigned be_get_machine_size(void)
+{
+       return be_get_backend_param()->machine_size;
+}
+
+ir_mode *be_get_mode_float_arithmetic(void)
+{
+       return be_get_backend_param()->mode_float_arithmetic;
+}
+
+ir_type *be_get_type_long_long(void)
+{
+       return be_get_backend_param()->type_long_long;
+}
+
+ir_type *be_get_type_unsigned_long_long(void)
+{
+       return be_get_backend_param()->type_unsigned_long_long;
+}
+
+ir_type *be_get_type_long_double(void)
+{
+       return be_get_backend_param()->type_long_double;
+}
+
 /**
  * Initializes the main environment for the backend.
  *
  * @param env          an empty environment
  * @param file_handle  the file handle where the output will be written to
  */
-static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
+static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle,
+                                  const char *compilation_unit_name)
 {
        memset(env, 0, sizeof(*env));
-       env->options              = &be_options;
+       env->file_handle          = file_handle;
        env->ent_trampoline_map   = pmap_create();
        env->pic_trampolines_type = new_type_class(NEW_ID("$PIC_TRAMPOLINE_TYPE"));
        env->ent_pic_symbol_map   = pmap_create();
        env->pic_symbols_type     = new_type_struct(NEW_ID("$PIC_SYMBOLS_TYPE"));
+       env->cup_name             = compilation_unit_name;
 
-       remove_irp_type(env->pic_trampolines_type);
-       remove_irp_type(env->pic_symbols_type);
        set_class_final(env->pic_trampolines_type, 1);
 
        memset(asm_constraint_flags, 0, sizeof(asm_constraint_flags));
-       env->arch_env = arch_env_init(isa_if, file_handle, env);
+       env->arch_env = arch_env_begin_codegeneration(isa_if, env);
 
-       be_dbg_open();
        return env;
 }
 
@@ -380,9 +422,6 @@ static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
  */
 static void be_done_env(be_main_env_t *env)
 {
-       arch_env_done(env->arch_env);
-       be_dbg_close();
-
        pmap_destroy(env->ent_trampoline_map);
        pmap_destroy(env->ent_pic_symbol_map);
        free_type(env->pic_trampolines_type);
@@ -417,12 +456,12 @@ static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
        irg->be_data = birg;
 
        memset(birg, 0, sizeof(*birg));
-       birg->irg = irg;
        birg->main_env = env;
        obstack_init(&birg->obst);
+       birg->lv = be_liveness_new(irg);
 
-       edges_deactivate_kind(irg, EDGE_KIND_DEP);
-       edges_activate_kind(irg, EDGE_KIND_DEP);
+       edges_deactivate(irg);
+       edges_activate(irg);
 
        /* set the current graph (this is important for several firm functions) */
        current_ir_graph = irg;
@@ -434,10 +473,13 @@ static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
        /* Remove critical edges */
        remove_critical_cf_edges_ex(irg, /*ignore_exception_edges=*/0);
 
+       /* For code generation all unreachable code and Bad nodes should be gone */
+       remove_unreachable_code(irg);
+       remove_bads(irg);
+
        /* Ensure, that the ir_edges are computed. */
-       edges_assure(irg);
+       assure_edges(irg);
 
-       set_irg_phase_state(irg, phase_backend);
        be_info_init_irg(irg);
 
        dump(DUMP_INITIAL, irg, "prepared");
@@ -461,7 +503,6 @@ static const char *get_timer_name(be_timer_id_t id)
        case T_LIVE:           return "live";
        case T_EXECFREQ:       return "execfreq";
        case T_SSA_CONSTR:     return "ssa_constr";
-       case T_RA_PROLOG:      return "ra_prolog";
        case T_RA_EPILOG:      return "ra_epilog";
        case T_RA_CONSTR:      return "ra_constr";
        case T_RA_SPILL:       return "ra_spill";
@@ -476,6 +517,21 @@ static const char *get_timer_name(be_timer_id_t id)
 }
 ir_timer_t *be_timers[T_LAST+1];
 
+void be_lower_for_target(void)
+{
+       size_t i;
+
+       initialize_isa();
+
+       isa_if->lower_for_target();
+       /* set the phase to low */
+       for (i = get_irp_n_irgs(); i > 0;) {
+               ir_graph *irg = get_irp_irg(--i);
+               assert(!irg_is_constrained(irg, IR_GRAPH_CONSTRAINT_TARGET_LOWERED));
+               add_irg_constraints(irg, IR_GRAPH_CONSTRAINT_TARGET_LOWERED);
+       }
+}
+
 /**
  * The Firm backend main loop.
  * Do architecture specific lowering for all graphs
@@ -488,85 +544,102 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 {
        static const char suffix[] = ".prof";
 
-       int           i, num_birgs, stat_active = 0;
+       size_t        i;
+       size_t        num_irgs;
+       size_t        num_birgs;
        be_main_env_t env;
        char          prof_filename[256];
        be_irg_t      *birgs;
-       ir_graph      **irg_list, **backend_irg_list;
        arch_env_t    *arch_env;
 
        be_timing = (be_options.timing == BE_TIME_ON);
 
+       /* perform target lowering if it didn't happen yet */
+       if (get_irp_n_irgs() > 0 && !irg_is_constrained(get_irp_irg(0), IR_GRAPH_CONSTRAINT_TARGET_LOWERED))
+               be_lower_for_target();
+
        if (be_timing) {
                for (i = 0; i < T_LAST+1; ++i) {
                        be_timers[i] = ir_timer_new();
                }
        }
 
-       be_init_env(&env, file_handle);
-       env.cup_name = cup_name;
-
-       be_dbg_so(cup_name);
-       be_dbg_types();
+       be_init_env(&env, file_handle, cup_name);
 
        arch_env = env.arch_env;
 
-       /* backend may provide an ordered list of irgs where code should be
-        * generated for */
-       irg_list         = NEW_ARR_F(ir_graph *, 0);
-       backend_irg_list = arch_env_get_backend_irg_list(arch_env, &irg_list);
-
        /* we might need 1 birg more for instrumentation constructor */
-       num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
-       birgs     = ALLOCAN(be_irg_t, num_birgs + 1);
+       num_irgs = get_irp_n_irgs();
+       birgs    = ALLOCAN(be_irg_t, num_irgs + 1);
 
        be_info_init();
 
        /* First: initialize all birgs */
-       for (i = 0; i < num_birgs; ++i) {
-               ir_graph *irg = backend_irg_list ? backend_irg_list[i] : get_irp_irg(i);
-               initialize_birg(&birgs[i], irg, &env);
+       num_birgs = 0;
+       for (i = 0; i < num_irgs; ++i) {
+               ir_graph  *irg    = get_irp_irg(i);
+               ir_entity *entity = get_irg_entity(irg);
+               if (get_entity_linkage(entity) & IR_LINKAGE_NO_CODEGEN)
+                       continue;
+               initialize_birg(&birgs[num_birgs++], irg, &env);
        }
        arch_env_handle_intrinsics(arch_env);
-       DEL_ARR_F(irg_list);
 
        /*
                Get the filename for the profiling data.
                Beware: '\0' is already included in sizeof(suffix)
        */
-       memset(prof_filename, 0, sizeof(prof_filename));
-       strncpy(prof_filename, cup_name, sizeof(prof_filename) - sizeof(suffix));
-       strcat(prof_filename, suffix);
+       sprintf(prof_filename, "%.*s%s",
+               (int)(sizeof(prof_filename) - sizeof(suffix)), cup_name, suffix);
+
+       bool have_profile = false;
+       if (be_options.opt_profile_use) {
+               bool res = ir_profile_read(prof_filename);
+               if (!res) {
+                       fprintf(stderr, "Warning: Couldn't read profile data '%s'\n",
+                               prof_filename);
+               } else {
+                       ir_create_execfreqs_from_profile();
+                       ir_profile_free();
+                       have_profile = true;
+               }
+       }
 
-       /*
-               Next: Either instruments all irgs with profiling code
-               or try to read in profile data for current translation unit.
-       */
-       if (be_options.opt_profile) {
-               ir_graph *prof_init_irg = ir_profile_instrument(prof_filename, profile_default);
+       if (num_birgs > 0 && be_options.opt_profile_generate) {
+               ir_graph *const prof_init_irg = ir_profile_instrument(prof_filename);
+               assert(prof_init_irg->be_data == NULL);
                initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
                num_birgs++;
-       } else {
-               ir_profile_read(prof_filename);
+               num_irgs++;
+               assert(num_irgs == get_irp_n_irgs());
        }
 
-#ifdef FIRM_STATISTICS
-       stat_active = stat_is_active();
-#endif /* FIRM_STATISTICS */
+       for (be_timer_id_t t = T_FIRST; t < T_LAST+1; ++t) {
+               ir_timer_init_parent(be_timers[t]);
+       }
+       if (!have_profile) {
+               be_timer_push(T_EXECFREQ);
+               for (i = 0; i < num_irgs; ++i) {
+                       ir_graph *irg = get_irp_irg(i);
+                       ir_estimate_execfreq(irg);
+               }
+               be_timer_pop(T_EXECFREQ);
+       }
 
        /* For all graphs */
-       for (i = 0; i < num_birgs; ++i) {
-               be_irg_t *birg = &birgs[i];
-               ir_graph *irg  = birg->irg;
-               optimization_state_t state;
+       for (i = 0; i < num_irgs; ++i) {
+               ir_graph  *const irg    = get_irp_irg(i);
+               ir_entity *const entity = get_irg_entity(irg);
+               if (get_entity_linkage(entity) & IR_LINKAGE_NO_CODEGEN)
+                       continue;
 
                /* set the current graph (this is important for several firm functions) */
                current_ir_graph = irg;
 
-               stat_ev_if {
-                       stat_ev_ctx_push_fobj("bemain_irg", irg);
-                       be_stat_ev("bemain_insns_start", be_count_insns(irg));
-                       be_stat_ev("bemain_blocks_start", be_count_blocks(irg));
+               if (stat_ev_enabled) {
+                       stat_ev_ctx_push_fmt("bemain_irg", "%+F", irg);
+                       stat_ev_ull("bemain_insns_start", be_count_insns(irg));
+                       stat_ev_ull("bemain_blocks_start", be_count_blocks(irg));
                }
 
                /* stop and reset timers */
@@ -576,33 +649,32 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                be_timer_push(T_VERIFY);
                if (be_options.verify_option == BE_VERIFY_WARN) {
                        irg_verify(irg, VERIFY_ENFORCE_SSA);
-                       be_check_dominance(irg);
                } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
                        assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
-                       assert(be_check_dominance(irg) && "Dominance verification failed");
                }
                be_timer_pop(T_VERIFY);
 
                /* get a code generator for this graph. */
-               arch_env->impl->init_graph(irg);
+               if (arch_env->impl->init_graph)
+                       arch_env->impl->init_graph(irg);
 
                /* some transformations need to be done before abi introduce */
                if (arch_env->impl->before_abi != NULL)
                        arch_env->impl->before_abi(irg);
 
                /* implement the ABI conventions. */
-               be_timer_push(T_ABI);
-               be_abi_introduce(irg);
-               be_timer_pop(T_ABI);
-
                if (!arch_env->custom_abi) {
+                       be_timer_push(T_ABI);
+                       be_abi_introduce(irg);
+                       be_timer_pop(T_ABI);
                        dump(DUMP_ABI, irg, "abi");
                }
 
-               /* we have to do cfopt+remove_critical_edges as we can't have Bad-blocks
-                * or critical edges in the backend */
-               optimize_cf(irg);
+               /* We can't have Bad-blocks or critical edges in the backend.
+                * Before removing Bads, we remove unreachable code. */
+               optimize_graph_df(irg);
                remove_critical_cf_edges(irg);
+               remove_bads(irg);
 
                /* We often have dead code reachable through out-edges here. So for
                 * now we rebuild edges (as we need correct user count for code
@@ -612,45 +684,20 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 
                dump(DUMP_PREPARED, irg, "before-code-selection");
 
-               if (be_options.verify_option == BE_VERIFY_WARN) {
-                       be_check_dominance(irg);
-               } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
-                       assert(be_check_dominance(irg) && "Dominance verification failed");
-               }
-
                /* perform codeselection */
                be_timer_push(T_CODEGEN);
                if (arch_env->impl->prepare_graph != NULL)
                        arch_env->impl->prepare_graph(irg);
                be_timer_pop(T_CODEGEN);
 
-               if (be_options.verify_option == BE_VERIFY_WARN) {
-                       be_check_dominance(irg);
-               } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
-                       assert(be_check_dominance(irg) && "Dominance verification failed");
-               }
-
-               be_timer_push(T_EXECFREQ);
-               /**
-                * Create execution frequencies from profile data or estimate some
-                */
-               if (ir_profile_has_data())
-                       birg->exec_freq = ir_create_execfreqs_from_profile(irg);
-               else {
-                       /* TODO: edges are corrupt for EDGE_KIND_BLOCK after the local
-                        * optimize graph phase merges blocks in the x86 backend */
-                       edges_deactivate(irg);
-                       birg->exec_freq = compute_execfreq(irg, 10);
-               }
-               be_timer_pop(T_EXECFREQ);
-
+               dump(DUMP_PREPARED, irg, "code-selection");
 
                /* disabled for now, fails for EmptyFor.c and XXEndless.c */
                /* be_live_chk_compare(irg); */
 
                /* schedule the irg */
                be_timer_push(T_SCHED);
-               list_sched(irg);
+               be_schedule_graph(irg);
                be_timer_pop(T_SCHED);
 
                dump(DUMP_SCHED, irg, "sched");
@@ -663,6 +710,7 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                /* introduce patterns to assure constraints */
                be_timer_push(T_CONSTR);
                /* we switch off optimizations here, because they might cause trouble */
+               optimization_state_t state;
                save_optimization_state(&state);
                set_optimize(0);
                set_opt_cse(0);
@@ -692,59 +740,39 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                be_sched_verify(irg, be_options.verify_option);
                be_timer_pop(T_VERIFY);
 
-               stat_ev_if {
-                       stat_ev_dbl("bemain_costs_before_ra",
-                                       be_estimate_irg_costs(irg, birg->exec_freq));
-                       be_stat_ev("bemain_insns_before_ra", be_count_insns(irg));
-                       be_stat_ev("bemain_blocks_before_ra", be_count_blocks(irg));
+               if (stat_ev_enabled) {
+                       stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg));
+                       stat_ev_ull("bemain_insns_before_ra", be_count_insns(irg));
+                       stat_ev_ull("bemain_blocks_before_ra", be_count_blocks(irg));
                }
 
                /* Do register allocation */
                be_allocate_registers(irg);
 
-#ifdef FIRM_STATISTICS
-               stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg, birg->exec_freq));
-#endif
+               stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg));
 
                dump(DUMP_RA, irg, "ra");
 
-               /* let the code generator prepare the graph for emitter */
                be_timer_push(T_FINISH);
-               if (arch_env->impl->after_ra != NULL)
-                       arch_env->impl->after_ra(irg);
-               be_timer_pop(T_FINISH);
-
-               /* fix stack offsets */
-               be_timer_push(T_ABI);
-               be_abi_fix_stack_nodes(irg);
-               be_remove_dead_nodes_from_schedule(irg);
-               be_abi_fix_stack_bias(irg);
-               be_timer_pop(T_ABI);
-
-               dump(DUMP_SCHED, irg, "fix_stack_after_ra");
-
-               be_timer_push(T_FINISH);
-               if (arch_env->impl->finish != NULL)
-                       arch_env->impl->finish(irg);
+               if (arch_env->impl->finish_graph != NULL)
+                       arch_env->impl->finish_graph(irg);
                be_timer_pop(T_FINISH);
 
                dump(DUMP_FINAL, irg, "finish");
 
-               stat_ev_if {
-                       be_stat_ev("bemain_insns_finish", be_count_insns(irg));
-                       be_stat_ev("bemain_blocks_finish", be_count_blocks(irg));
+               if (stat_ev_enabled) {
+                       stat_ev_ull("bemain_insns_finish", be_count_insns(irg));
+                       stat_ev_ull("bemain_blocks_finish", be_count_blocks(irg));
                }
 
                /* check schedule and register allocation */
                be_timer_push(T_VERIFY);
                if (be_options.verify_option == BE_VERIFY_WARN) {
                        irg_verify(irg, VERIFY_ENFORCE_SSA);
-                       be_check_dominance(irg);
                        be_verify_schedule(irg);
                        be_verify_register_allocation(irg);
                } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
                        assert(irg_verify(irg, VERIFY_ENFORCE_SSA) && "irg verification failed");
-                       assert(be_check_dominance(irg) && "Dominance verification failed");
                        assert(be_verify_schedule(irg) && "Schedule verification failed");
                        assert(be_verify_register_allocation(irg)
                               && "register allocation verification failed");
@@ -760,18 +788,14 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 
                dump(DUMP_FINAL, irg, "end");
 
-               be_timer_push(T_ABI);
-               be_abi_free(irg);
-               be_timer_pop(T_ABI);
-
                restore_optimization_state(&state);
 
                be_timer_pop(T_OTHER);
 
                if (be_timing) {
-                       int t;
+                       be_timer_id_t t;
                        if (stat_ev_enabled) {
-                               for (t = 0; t < T_LAST+1; ++t) {
+                               for (t = T_FIRST; t < T_LAST+1; ++t) {
                                        char buf[128];
                                        snprintf(buf, sizeof(buf), "bemain_time_%s",
                                                 get_timer_name(t));
@@ -780,13 +804,12 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                        } else {
                                printf("==>> IRG %s <<==\n",
                                       get_entity_name(get_irg_entity(irg)));
-                               for (t = 0; t < T_LAST+1; ++t) {
+                               for (t = T_FIRST; t < T_LAST+1; ++t) {
                                        double val = ir_timer_elapsed_usec(be_timers[t]) / 1000.0;
-                                       printf("%-20s: %8.3lf msec\n", get_timer_name(t), val);
+                                       printf("%-20s: %10.3f msec\n", get_timer_name(t), val);
                                }
                        }
-                       for (t = 0; t < T_LAST+1; ++t) {
-                               ir_timer_stop(be_timers[t]);
+                       for (t = T_FIRST; t < T_LAST+1; ++t) {
                                ir_timer_reset(be_timers[t]);
                        }
                }
@@ -794,7 +817,9 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                be_free_birg(irg);
                stat_ev_ctx_pop("bemain_irg");
        }
-       ir_profile_free();
+
+       arch_env_end_codegeneration(arch_env);
+
        be_done_env(&env);
 
        be_info_free();
@@ -805,18 +830,6 @@ void be_main(FILE *file_handle, const char *cup_name)
 {
        ir_timer_t *t = NULL;
 
-       /* The user specified another config file to read. do that now. */
-       if (config_file[0] != '\0') {
-               FILE *f = fopen(config_file, "rt");
-
-               if (f != NULL) {
-                       lc_opt_from_file(config_file, f, NULL);
-                       fclose(f);
-               } else {
-                       fprintf(stderr, "Warning: Cannot open config file '%s'\n", config_file);
-               }
-       }
-
        if (be_options.timing == BE_TIME_ON) {
                t = ir_timer_new();
 
@@ -827,7 +840,6 @@ void be_main(FILE *file_handle, const char *cup_name)
                ir_timer_reset_and_start(t);
        }
 
-#ifdef FIRM_STATISTICS
        if (be_options.statev) {
                const char *dot = strrchr(cup_name, '.');
                const char *pos = dot ? dot : cup_name + strlen(cup_name);
@@ -839,33 +851,29 @@ void be_main(FILE *file_handle, const char *cup_name)
                stat_ev_begin(buf, be_options.filtev);
                stat_ev_ctx_push_str("bemain_compilation_unit", cup_name);
        }
-#endif
 
        be_main_loop(file_handle, cup_name);
 
        if (be_options.timing == BE_TIME_ON) {
                ir_timer_stop(t);
                ir_timer_leave_high_priority();
-               stat_ev_if {
+               if (stat_ev_enabled) {
                        stat_ev_dbl("bemain_backend_time", ir_timer_elapsed_msec(t));
                } else {
                        double val = ir_timer_elapsed_usec(t) / 1000.0;
-                       printf("%-20s: %8.3lf msec\n", "BEMAINLOOP", val);
+                       printf("%-20s: %10.3f msec\n", "BEMAINLOOP", val);
                }
        }
 
-#ifdef FIRM_STATISTICS
        if (be_options.statev) {
                stat_ev_ctx_pop("bemain_compilation_unit");
                stat_ev_end();
        }
-#endif
 }
 
 static int do_lower_for_target(ir_prog *irp, void *context)
 {
-       const backend_params *be_params = be_get_backend_param();
-       be_params->lower_for_target();
+       be_lower_for_target();
        (void) context;
        (void) irp;
        return 0;
@@ -878,19 +886,3 @@ ir_prog_pass_t *lower_for_target_pass(const char *name)
                                         name ? name : "lower_for_target",
                                         do_lower_for_target);
 }
-
-unsigned be_put_ignore_regs(const ir_graph *irg,
-                            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) == cls->n_regs);
-       arch_put_non_ignore_regs(cls, bs);
-       bitset_flip_all(bs);
-       be_abi_put_ignore_regs(be_get_irg_abi(irg), cls, bs);
-
-       return bitset_popcount(bs);
-}