put register classes into arch_env struct, no need for complicated callbacks
[libfirm] / ir / be / bemain.c
index a19c983..409fa37 100644 (file)
@@ -24,9 +24,7 @@
  * @date        25.11.2004
  * @version     $Id$
  */
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
 
 #include <stdarg.h>
 #include <stdio.h>
 #include "irgopt.h"
 #include "irgraph.h"
 #include "irdump.h"
-#include "phiclass.h"
 #include "irdom_t.h"
 #include "iredges_t.h"
 #include "irloop_t.h"
 #include "irtools.h"
-#include "irvrfy.h"
+#include "irverify.h"
 #include "irprintf.h"
 #include "iroptimize.h"
 #include "firmstat.h"
 #include "execfreq.h"
 #include "irprofile.h"
+#include "irpass_t.h"
 
-#include "bearch_t.h"
+#include "bearch.h"
 #include "be_t.h"
 #include "bemodule.h"
 #include "beutil.h"
-#include "benode_t.h"
+#include "benode.h"
 #include "beirgmod.h"
-#include "besched_t.h"
+#include "besched.h"
 #include "belistsched.h"
 #include "belive_t.h"
 #include "bera.h"
 #include "bechordal_t.h"
 #include "beifg.h"
-#include "beifg_impl.h"
 #include "becopyopt.h"
 #include "becopystat.h"
 #include "bessadestr.h"
 #include "bestat.h"
 #include "beverify.h"
 #include "be_dbgout.h"
-#include "beirg_t.h"
+#include "beirg.h"
+#include "bestack.h"
 
 #define NEW_ID(s) new_id_from_chars(s, sizeof(s) - 1)
 
-#ifdef WITH_ILP
-#include "beilpsched.h"
-#endif /* WITH_ILP */
-
 /* options visible for anyone */
 static be_options_t be_options = {
        DUMP_NONE,                         /* dump flags */
        BE_TIME_OFF,                       /* no timing */
        0,                                 /* no opt profile */
        0,                                 /* try to omit frame pointer */
-       0,                                 /* try to omit leaf frame pointer */
        0,                                 /* create PIC code */
        0,                                 /* create gprof compatible profiling code */
-       BE_VRFY_WARN,                      /* verification level: warn */
-       BE_SCHED_LIST,                     /* scheduler: list scheduler */
+       BE_VERIFY_WARN,                    /* verification level: warn */
        "linux",                           /* target OS name */
        "i44pc52.info.uni-karlsruhe.de",   /* ilp server */
        "cplex",                           /* ilp solver */
@@ -122,45 +114,30 @@ static const lc_opt_enum_mask_items_t dump_items[] = {
 };
 
 /* verify options. */
-static const lc_opt_enum_int_items_t vrfy_items[] = {
-       { "off",    BE_VRFY_OFF    },
-       { "warn",   BE_VRFY_WARN   },
-       { "assert", BE_VRFY_ASSERT },
+static const lc_opt_enum_int_items_t verify_items[] = {
+       { "off",    BE_VERIFY_OFF    },
+       { "warn",   BE_VERIFY_WARN   },
+       { "assert", BE_VERIFY_ASSERT },
        { NULL,     0 }
 };
 
-/* scheduling options. */
-static const lc_opt_enum_int_items_t sched_items[] = {
-       { "list", BE_SCHED_LIST },
-#ifdef WITH_ILP
-       { "ilp",  BE_SCHED_ILP  },
-#endif /* WITH_ILP */
-       { NULL,   0 }
-};
-
 static lc_opt_enum_mask_var_t dump_var = {
        &be_options.dump_flags, dump_items
 };
 
-static lc_opt_enum_int_var_t vrfy_var = {
-       &be_options.vrfy_option, vrfy_items
-};
-
-static lc_opt_enum_int_var_t sched_var = {
-       &be_options.scheduler, sched_items
+static lc_opt_enum_int_var_t verify_var = {
+       &be_options.verify_option, verify_items
 };
 
 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     ("omitleaffp", "omit frame pointer in leaf routines",                 &be_options.omit_leaf_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 ("vrfy",       "verify the backend irg",                              &vrfy_var),
+       LC_OPT_ENT_ENUM_PTR ("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_ENUM_PTR ("sched",      "select a scheduler",                                  &sched_var),
        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     ("statev",     "dump statistic events",                               &be_options.statev),
@@ -250,7 +227,7 @@ asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
                switch (*c) {
                case '#':
                        /* 'comment' stuff */
-                       while(*c != 0 && *c != ',')
+                       while (*c != 0 && *c != ',')
                                ++c;
                        break;
                case '*':
@@ -267,18 +244,18 @@ asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
                        if (tflags != 0) {
                                flags |= tflags;
                        } else {
-                               flags |= isa_if->parse_asm_constraint(isa_if, &c);
+                               flags |= isa_if->parse_asm_constraint(&c);
                        }
                        break;
                }
        }
 
        if ((
-               flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE &&
-               flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE
+               flags & ASM_CONSTRAINT_FLAG_MODIFIER_WRITE &&
+               flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE
            ) || (
-               flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ &&
-               flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ
+               flags & ASM_CONSTRAINT_FLAG_MODIFIER_READ &&
+               flags & ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ
            )) {
                flags |= ASM_CONSTRAINT_FLAG_INVALID;
        }
@@ -303,7 +280,7 @@ int be_is_valid_clobber(const char *clobber)
        if (strcmp(clobber, "cc") == 0)
                return 1;
 
-       return isa_if->is_valid_clobber(isa_if, clobber);
+       return isa_if->is_valid_clobber(clobber);
 }
 
 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
@@ -319,49 +296,37 @@ void be_opt_register(void)
        lc_opt_entry_t *be_grp;
        static int run_once = 0;
 
-       if (run_once) {
+       if (run_once)
                return;
-       }
-       run_once     = 1;
-
-       be_init_modules();
+       run_once = 1;
 
        be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
        lc_opt_add_table(be_grp, be_main_options);
 
        be_add_module_list_opt(be_grp, "isa", "the instruction set architecture",
                               &isa_ifs, (void**) &isa_if);
+
+       be_init_modules();
 }
 
 /* Parse one argument. */
-int be_parse_arg(const char *arg) {
+int be_parse_arg(const char *arg)
+{
        lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
        if (strcmp(arg, "help") == 0 || (arg[0] == '?' && arg[1] == '\0')) {
-               lc_opt_print_help(be_grp, stdout);
+               lc_opt_print_help_for_entry(be_grp, '-', stdout);
                return -1;
        }
        return lc_opt_from_single_arg(be_grp, NULL, arg, NULL);
 }
 
-/** The be parameters returned by default, all off. */
-static const backend_params be_params = {
-       0,    /* need dword lowering */
-       0,    /* don't support inline assembler yet */
-       0,     /* no immediate floating point mode. */
-       NULL, /* no additional opcodes */
-       NULL, /* will be set later */
-       NULL, /* but yet no creator function */
-       NULL, /* context for create_intrinsic_fkt */
-       NULL, /* no if conversion settings */
-       NULL   /* no immediate fp mode */
-};
-
 /* Perform schedule verification if requested. */
-static void be_sched_vrfy(be_irg_t *birg, int vrfy_opt) {
-       if (vrfy_opt == BE_VRFY_WARN) {
-               be_verify_schedule(birg);
-       } else if (vrfy_opt == BE_VRFY_ASSERT) {
-               assert(be_verify_schedule(birg) && "Schedule verification failed.");
+static void be_sched_verify(ir_graph *irg, int verify_opt)
+{
+       if (verify_opt == BE_VERIFY_WARN) {
+               be_verify_schedule(irg);
+       } else if (verify_opt == BE_VERIFY_ASSERT) {
+               assert(be_verify_schedule(irg) && "Schedule verification failed.");
        }
 }
 
@@ -381,9 +346,7 @@ void firm_be_finish(void)
 /* Returns the backend parameter */
 const backend_params *be_get_backend_param(void)
 {
-       if (isa_if->get_params)
-               return isa_if->get_params();
-       return &be_params;
+       return isa_if->get_params();
 }
 
 /**
@@ -408,8 +371,6 @@ static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
        memset(asm_constraint_flags, 0, sizeof(asm_constraint_flags));
        env->arch_env = arch_env_init(isa_if, file_handle, env);
 
-       be_phi_handler_new(env);
-
        be_dbg_open();
        return env;
 }
@@ -421,7 +382,6 @@ static void be_done_env(be_main_env_t *env)
 {
        arch_env_done(env->arch_env);
        be_dbg_close();
-       be_phi_handler_free();
 
        pmap_destroy(env->ent_trampoline_map);
        pmap_destroy(env->ent_pic_symbol_map);
@@ -438,33 +398,35 @@ static void be_done_env(be_main_env_t *env)
  * @param suffix  the suffix for the dumper
  * @param dumper  the dumper to be called
  */
-static void dump(int mask, ir_graph *irg, const char *suffix,
-                 void (*dumper)(ir_graph *, const char *))
+static void dump(int mask, ir_graph *irg, const char *suffix)
 {
-       if(be_options.dump_flags & mask)
-               be_dump(irg, suffix, dumper);
+       if (be_options.dump_flags & mask)
+               dump_ir_graph(irg, suffix);
 }
 
 /**
- * Prepare a backend graph for code generation and initialize its birg
+ * Prepare a backend graph for code generation and initialize its irg
  */
 static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
 {
+       /* don't duplicate locals in backend when dumping... */
+       ir_remove_dump_flags(ir_dump_flag_consts_local);
+
+       dump(DUMP_INITIAL, irg, "begin");
+
+       irg->be_data = birg;
+
        memset(birg, 0, sizeof(*birg));
        birg->irg = irg;
        birg->main_env = env;
+       obstack_init(&birg->obst);
 
        edges_deactivate_kind(irg, EDGE_KIND_DEP);
        edges_activate_kind(irg, EDGE_KIND_DEP);
 
-       dump(DUMP_INITIAL, irg, "-begin", dump_ir_block_graph);
-
        /* set the current graph (this is important for several firm functions) */
        current_ir_graph = irg;
 
-       /* Normalize proj nodes. */
-       normalize_proj_nodes(irg);
-
        /* we do this before critical edge split. As this produces less returns,
           because sometimes (= 164.gzip) multiple returns are slower */
        normalize_n_returns(irg);
@@ -476,35 +438,43 @@ static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
        edges_assure(irg);
 
        set_irg_phase_state(irg, phase_backend);
+       be_info_init_irg(irg);
 
-       dump(DUMP_INITIAL, irg, "-prepared", dump_ir_block_graph);
+       dump(DUMP_INITIAL, irg, "prepared");
 }
 
-#define BE_TIMER_ONLY(code)   do { if (be_timing) { code; } } while(0)
-
 int be_timing;
-ir_timer_t *t_abi;
-ir_timer_t *t_codegen;
-ir_timer_t *t_sched;
-ir_timer_t *t_constr;
-ir_timer_t *t_finish;
-ir_timer_t *t_emit;
-ir_timer_t *t_other;
-ir_timer_t *t_verify;
-ir_timer_t *t_heights;
-ir_timer_t *t_live;
-ir_timer_t *t_execfreq;
-ir_timer_t *t_ssa_constr;
-ir_timer_t *t_ra_constr;
-ir_timer_t *t_ra_prolog;
-ir_timer_t *t_ra_epilog;
-ir_timer_t *t_ra_spill;
-ir_timer_t *t_ra_spill_apply;
-ir_timer_t *t_ra_color;
-ir_timer_t *t_ra_ifg;
-ir_timer_t *t_ra_copymin;
-ir_timer_t *t_ra_ssa;
-ir_timer_t *t_ra_other;
+
+static const char *get_timer_name(be_timer_id_t id)
+{
+       switch (id) {
+       case T_ABI:            return "abi";
+       case T_CODEGEN:        return "codegen";
+       case T_RA_PREPARATION: return "ra_preparation";
+       case T_SCHED:          return "sched";
+       case T_CONSTR:         return "constr";
+       case T_FINISH:         return "finish";
+       case T_EMIT:           return "emit";
+       case T_VERIFY:         return "verify";
+       case T_OTHER:          return "other";
+       case T_HEIGHTS:        return "heights";
+       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";
+       case T_RA_SPILL_APPLY: return "ra_spill_apply";
+       case T_RA_COLOR:       return "ra_color";
+       case T_RA_IFG:         return "ra_ifg";
+       case T_RA_COPYMIN:     return "ra_copymin";
+       case T_RA_SSA:         return "ra_ssa";
+       case T_RA_OTHER:       return "ra_other";
+       }
+       return "unknown";
+}
+ir_timer_t *be_timers[T_LAST+1];
 
 /**
  * The Firm backend main loop.
@@ -516,41 +486,21 @@ ir_timer_t *t_ra_other;
  */
 static void be_main_loop(FILE *file_handle, const char *cup_name)
 {
-       int i;
-       be_main_env_t env;
-       char prof_filename[256];
        static const char suffix[] = ".prof";
-       be_irg_t *birgs;
-       int num_birgs;
-       ir_graph **irg_list, **backend_irg_list;
-       arch_env_t *arch_env;
+
+       int           i, num_birgs, stat_active = 0;
+       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);
 
        if (be_timing) {
-               t_abi        = ir_timer_register("bemain_time_beabi",       "be abi introduction");
-               t_codegen    = ir_timer_register("bemain_time_codegen",     "codegeneration");
-               t_sched      = ir_timer_register("bemain_time_sched",       "scheduling");
-               t_constr     = ir_timer_register("bemain_time_constr",      "assure constraints");
-               t_finish     = ir_timer_register("bemain_time_finish",      "graph finish");
-               t_emit       = ir_timer_register("bemain_time_emiter",      "code emiter");
-               t_verify     = ir_timer_register("bemain_time_verify",      "graph verification");
-               t_other      = ir_timer_register("bemain_time_other",       "other");
-               t_heights    = ir_timer_register("bemain_time_heights",     "heights");
-               t_live       = ir_timer_register("bemain_time_liveness",    "be liveness");
-               t_execfreq   = ir_timer_register("bemain_time_execfreq",    "execfreq");
-               t_ssa_constr = ir_timer_register("bemain_time_ssa_constr",  "ssa reconstruction");
-               t_ra_prolog  = ir_timer_register("bemain_time_ra_prolog",   "regalloc prolog");
-               t_ra_epilog  = ir_timer_register("bemain_time_ra_epilog",   "regalloc epilog");
-               t_ra_constr  = ir_timer_register("bemain_time_ra_constr",   "regalloc constraints");
-               t_ra_spill   = ir_timer_register("bemain_time_ra_spill",    "spiller");
-               t_ra_spill_apply
-                       = ir_timer_register("bemain_time_ra_spill_apply", "apply spills");
-               t_ra_color   = ir_timer_register("bemain_time_ra_color",    "graph coloring");
-               t_ra_ifg     = ir_timer_register("bemain_time_ra_ifg",      "interference graph");
-               t_ra_copymin = ir_timer_register("bemain_time_ra_copymin",  "copy minimization");
-               t_ra_ssa     = ir_timer_register("bemain_time_ra_ssadestr", "ssa destruction");
-               t_ra_other   = ir_timer_register("bemain_time_ra_other",    "regalloc other");
+               for (i = 0; i < T_LAST+1; ++i) {
+                       be_timers[i] = ir_timer_new();
+               }
        }
 
        be_init_env(&env, file_handle);
@@ -568,13 +518,16 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 
        /* we might need 1 birg more for instrumentation constructor */
        num_birgs = backend_irg_list ? ARR_LEN(backend_irg_list) : get_irp_n_irgs();
-       birgs     = alloca(sizeof(birgs[0]) * (num_birgs + 1));
+       birgs     = ALLOCAN(be_irg_t, num_birgs + 1);
+
+       be_info_init();
 
        /* First: initialize all birgs */
-       for(i = 0; i < num_birgs; ++i) {
+       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);
        }
+       arch_env_handle_intrinsics(arch_env);
        DEL_ARR_F(irg_list);
 
        /*
@@ -597,21 +550,19 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                ir_profile_read(prof_filename);
        }
 
+#ifdef FIRM_STATISTICS
+       stat_active = stat_is_active();
+#endif /* FIRM_STATISTICS */
+
        /* 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;
-               const arch_code_generator_if_t *cg_if;
 
                /* set the current graph (this is important for several firm functions) */
                current_ir_graph = irg;
 
-               be_sched_init_phase(irg);
-
-               /* reset the phi handler. */
-               be_phi_handler_reset();
-
                stat_ev_if {
                        stat_ev_ctx_push_fobj("bemain_irg", irg);
                        be_stat_ev("bemain_insns_start", be_count_insns(irg));
@@ -619,62 +570,67 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                }
 
                /* stop and reset timers */
-               BE_TIMER_PUSH(t_other);   /* t_other */
+               be_timer_push(T_OTHER);
 
                /* Verify the initial graph */
-               BE_TIMER_PUSH(t_verify);
-               if (be_options.vrfy_option == BE_VRFY_WARN) {
-                       irg_verify(irg, VRFY_ENFORCE_SSA);
+               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.vrfy_option == BE_VRFY_ASSERT) {
-                       assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
+               } 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 the code generator interface. */
-               cg_if = arch_env_get_code_generator_if(arch_env);
+               be_timer_pop(T_VERIFY);
 
                /* get a code generator for this graph. */
-               birg->cg = cg_if->init(birg);
+               arch_env->impl->init_graph(irg);
 
                /* some transformations need to be done before abi introduce */
-               arch_code_generator_before_abi(birg->cg);
+               if (arch_env->impl->before_abi != NULL)
+                       arch_env->impl->before_abi(irg);
 
                /* implement the ABI conventions. */
-               BE_TIMER_PUSH(t_abi);
-               birg->abi = be_abi_introduce(birg);
-               BE_TIMER_POP(t_abi);
+               be_timer_push(T_ABI);
+               be_abi_introduce(irg);
+               be_timer_pop(T_ABI);
 
-               dump(DUMP_ABI, irg, "-abi", dump_ir_block_graph);
+               if (!arch_env->custom_abi) {
+                       dump(DUMP_ABI, irg, "abi");
+               }
 
-               if (be_options.vrfy_option == BE_VRFY_WARN) {
+               /* we have to do cfopt+remove_critical_edges as we can't have Bad-blocks
+                * or critical edges in the backend */
+               optimize_cf(irg);
+               remove_critical_cf_edges(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
+                * selection) */
+               edges_deactivate(irg);
+               edges_activate(irg);
+
+               dump(DUMP_PREPARED, irg, "before-code-selection");
+
+               if (be_options.verify_option == BE_VERIFY_WARN) {
                        be_check_dominance(irg);
-                       be_verify_out_edges(irg);
-               } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
-                       assert(be_verify_out_edges(irg));
+               } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
                        assert(be_check_dominance(irg) && "Dominance verification failed");
                }
 
-               /* generate code */
-               BE_TIMER_PUSH(t_codegen);
-               arch_code_generator_prepare_graph(birg->cg);
-               BE_TIMER_POP(t_codegen);
-
-               /* reset the phi handler. */
-               be_phi_handler_reset();
+               /* 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);
 
-               dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
-
-               if (be_options.vrfy_option == BE_VRFY_WARN) {
+               if (be_options.verify_option == BE_VERIFY_WARN) {
                        be_check_dominance(irg);
-                       be_verify_out_edges(irg);
-               } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
-                       assert(be_verify_out_edges(irg));
+               } else if (be_options.verify_option == BE_VERIFY_ASSERT) {
                        assert(be_check_dominance(irg) && "Dominance verification failed");
                }
 
-               BE_TIMER_PUSH(t_execfreq);
+               be_timer_push(T_EXECFREQ);
                /**
                 * Create execution frequencies from profile data or estimate some
                 */
@@ -686,107 +642,93 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                        edges_deactivate(irg);
                        birg->exec_freq = compute_execfreq(irg, 10);
                }
-               BE_TIMER_POP(t_execfreq);
+               be_timer_pop(T_EXECFREQ);
 
 
                /* disabled for now, fails for EmptyFor.c and XXEndless.c */
-               /* be_live_chk_compare(birg); */
-
-               /* let backend prepare scheduling */
-               BE_TIMER_PUSH(t_codegen);
-               arch_code_generator_before_sched(birg->cg);
-               BE_TIMER_POP(t_codegen);
+               /* be_live_chk_compare(irg); */
 
                /* schedule the irg */
-               BE_TIMER_PUSH(t_sched);
-               switch (be_options.scheduler) {
-                       default:
-                               fprintf(stderr, "Warning: invalid scheduler (%d) selected, falling back to list scheduler.\n", be_options.scheduler);
-                       case BE_SCHED_LIST:
-                               list_sched(birg, &be_options);
-                               break;
-#ifdef WITH_ILP
-                       case BE_SCHED_ILP:
-                               be_ilp_sched(birg, &be_options);
-                               break;
-#endif /* WITH_ILP */
-               };
-               BE_TIMER_POP(t_sched);
+               be_timer_push(T_SCHED);
+               list_sched(irg);
+               be_timer_pop(T_SCHED);
 
-               dump(DUMP_SCHED, irg, "-sched", dump_ir_block_graph_sched);
+               dump(DUMP_SCHED, irg, "sched");
 
                /* check schedule */
-               BE_TIMER_PUSH(t_verify);
-               be_sched_vrfy(birg, be_options.vrfy_option);
-               BE_TIMER_POP(t_verify);
+               be_timer_push(T_VERIFY);
+               be_sched_verify(irg, be_options.verify_option);
+               be_timer_pop(T_VERIFY);
 
                /* introduce patterns to assure constraints */
-               BE_TIMER_PUSH(t_constr);
+               be_timer_push(T_CONSTR);
                /* we switch off optimizations here, because they might cause trouble */
                save_optimization_state(&state);
                set_optimize(0);
-               set_opt_normalize(0);
                set_opt_cse(0);
 
                /* add Keeps for should_be_different constrained nodes  */
                /* beware: needs schedule due to usage of be_ssa_constr */
-               assure_constraints(birg);
-               BE_TIMER_POP(t_constr);
+               assure_constraints(irg);
+               be_timer_pop(T_CONSTR);
 
-               dump(DUMP_SCHED, irg, "-assured", dump_ir_block_graph_sched);
+               dump(DUMP_SCHED, irg, "assured");
 
                /* stuff needs to be done after scheduling but before register allocation */
-               BE_TIMER_PUSH(t_codegen);
-               arch_code_generator_before_ra(birg->cg);
-               BE_TIMER_POP(t_codegen);
+               be_timer_push(T_RA_PREPARATION);
+               if (arch_env->impl->before_ra != NULL)
+                       arch_env->impl->before_ra(irg);
+               be_timer_pop(T_RA_PREPARATION);
 
                /* connect all stack modifying nodes together (see beabi.c) */
-               BE_TIMER_PUSH(t_abi);
-               be_abi_fix_stack_nodes(birg->abi);
-               BE_TIMER_POP(t_abi);
+               be_timer_push(T_ABI);
+               be_abi_fix_stack_nodes(irg);
+               be_timer_pop(T_ABI);
 
-               dump(DUMP_SCHED, irg, "-fix_stack", dump_ir_block_graph_sched);
+               dump(DUMP_SCHED, irg, "fix_stack");
 
                /* check schedule */
-               BE_TIMER_PUSH(t_verify);
-               be_sched_vrfy(birg, be_options.vrfy_option);
-               BE_TIMER_POP(t_verify);
+               be_timer_push(T_VERIFY);
+               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, arch_env, birg->exec_freq));
+                                       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));
                }
 
                /* Do register allocation */
-               be_allocate_registers(birg);
+               be_allocate_registers(irg);
 
 #ifdef FIRM_STATISTICS
-               stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg, arch_env, birg->exec_freq));
+               stat_ev_dbl("bemain_costs_before_ra", be_estimate_irg_costs(irg, birg->exec_freq));
 #endif
 
-               dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
+               dump(DUMP_RA, irg, "ra");
 
                /* let the code generator prepare the graph for emitter */
-               BE_TIMER_PUSH(t_finish);
-               arch_code_generator_after_ra(birg->cg);
-               BE_TIMER_POP(t_finish);
+               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(birg->abi);
-               be_remove_dead_nodes_from_schedule(birg);
-               be_abi_fix_stack_bias(birg->abi);
-               BE_TIMER_POP(t_abi);
+               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", dump_ir_block_graph_sched);
+               dump(DUMP_SCHED, irg, "fix_stack_after_ra");
 
-               BE_TIMER_PUSH(t_finish);
-               arch_code_generator_finish(birg->cg);
-               BE_TIMER_POP(t_finish);
+               be_timer_push(T_FINISH);
+               if (arch_env->impl->finish != NULL)
+                       arch_env->impl->finish(irg);
+               be_timer_pop(T_FINISH);
 
-               dump(DUMP_FINAL, irg, "-finish", dump_ir_block_graph_sched);
+               dump(DUMP_FINAL, irg, "finish");
 
                stat_ev_if {
                        be_stat_ev("bemain_insns_finish", be_count_insns(irg));
@@ -794,86 +736,68 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                }
 
                /* check schedule and register allocation */
-               BE_TIMER_PUSH(t_verify);
-               if (be_options.vrfy_option == BE_VRFY_WARN) {
-                       irg_verify(irg, VRFY_ENFORCE_SSA);
+               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_out_edges(irg);
-                       be_verify_schedule(birg);
-                       be_verify_register_allocation(birg);
-               } else if (be_options.vrfy_option == BE_VRFY_ASSERT) {
-                       assert(irg_verify(irg, VRFY_ENFORCE_SSA) && "irg verification failed");
-                       assert(be_verify_out_edges(irg) && "out edge verification failed");
+                       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(birg) && "Schedule verification failed");
-                       assert(be_verify_register_allocation(birg)
+                       assert(be_verify_schedule(irg) && "Schedule verification failed");
+                       assert(be_verify_register_allocation(irg)
                               && "register allocation verification failed");
 
                }
-               BE_TIMER_POP(t_verify);
+               be_timer_pop(T_VERIFY);
 
                /* emit assembler code */
-               BE_TIMER_PUSH(t_emit);
-               arch_code_generator_done(birg->cg);
-               BE_TIMER_POP(t_emit);
+               be_timer_push(T_EMIT);
+               if (arch_env->impl->emit != NULL)
+                       arch_env->impl->emit(irg);
+               be_timer_pop(T_EMIT);
 
-               dump(DUMP_FINAL, irg, "-end", dump_ir_block_graph_sched);
+               dump(DUMP_FINAL, irg, "end");
 
-               BE_TIMER_PUSH(t_abi);
-               be_abi_free(birg->abi);
-               BE_TIMER_POP(t_abi);
+               be_timer_push(T_ABI);
+               be_abi_free(irg);
+               be_timer_pop(T_ABI);
 
                restore_optimization_state(&state);
 
-               BE_TIMER_POP(t_other);
-
-#define STOP_AND_RESET_TIMER(timer) do { ir_timer_stop(timer); ir_timer_reset(timer); } while(0)
-
-#define LC_EMIT(timer)  \
-               stat_ev_if {    \
-                       stat_ev_dbl(ir_timer_get_name(timer), ir_timer_elapsed_msec(timer));  \
-               } else { \
-                       printf("%-20s: %8.3lf msec\n", ir_timer_get_description(timer), (double)ir_timer_elapsed_usec(timer) / 1000.0); \
-               } \
-               STOP_AND_RESET_TIMER(timer);
-
-               BE_TIMER_ONLY(
-                       stat_ev_if {
+               be_timer_pop(T_OTHER);
+
+               if (be_timing) {
+                       int t;
+                       if (stat_ev_enabled) {
+                               for (t = 0; t < T_LAST+1; ++t) {
+                                       char buf[128];
+                                       snprintf(buf, sizeof(buf), "bemain_time_%s",
+                                                get_timer_name(t));
+                                       stat_ev_dbl(buf, ir_timer_elapsed_usec(be_timers[i]));
+                               }
                        } else {
-                               printf("==>> IRG %s <<==\n", get_entity_name(get_irg_entity(irg)));
+                               printf("==>> IRG %s <<==\n",
+                                      get_entity_name(get_irg_entity(irg)));
+                               for (t = 0; 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);
+                               }
+                       }
+                       for (t = 0; t < T_LAST+1; ++t) {
+                               ir_timer_stop(be_timers[t]);
+                               ir_timer_reset(be_timers[t]);
                        }
-                       LC_EMIT(t_abi);
-                       LC_EMIT(t_codegen);
-                       LC_EMIT(t_sched);
-                       LC_EMIT(t_live);
-                       LC_EMIT(t_heights);
-                       LC_EMIT(t_ssa_constr);
-                       LC_EMIT(t_constr);
-                       LC_EMIT(t_execfreq);
-                       LC_EMIT(t_ra_prolog);
-                       LC_EMIT(t_ra_spill);
-                       LC_EMIT(t_ra_spill_apply);
-                       LC_EMIT(t_ra_constr);
-                       LC_EMIT(t_ra_color);
-                       LC_EMIT(t_ra_ifg);
-                       LC_EMIT(t_ra_copymin);
-                       LC_EMIT(t_ra_ssa);
-                       LC_EMIT(t_ra_epilog);
-                       LC_EMIT(t_ra_other);
-                       LC_EMIT(t_finish);
-                       LC_EMIT(t_emit);
-                       LC_EMIT(t_verify);
-                       LC_EMIT(t_other);
-               );
-#undef LC_EMIT
-
-               be_sched_free_phase(irg);
-
-               be_free_birg(birg);
+               }
+
+               be_free_birg(irg);
                stat_ev_ctx_pop("bemain_irg");
        }
        ir_profile_free();
        be_done_env(&env);
+
+       be_info_free();
 }
 
 /* Main interface to the frontend. */
@@ -883,16 +807,18 @@ void be_main(FILE *file_handle, const char *cup_name)
 
        /* The user specified another config file to read. do that now. */
        if (config_file[0] != '\0') {
-               FILE *f;
+               FILE *f = fopen(config_file, "rt");
 
-               if ((f = fopen(config_file, "rt")) != NULL) {
+               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_register("bemain", "measure complete bemain loop");
+               t = ir_timer_new();
 
                if (ir_timer_enter_high_priority()) {
                        fprintf(stderr, "Warning: Could not enter high priority mode.\n");
@@ -905,7 +831,7 @@ void be_main(FILE *file_handle, const char *cup_name)
        if (be_options.statev) {
                const char *dot = strrchr(cup_name, '.');
                const char *pos = dot ? dot : cup_name + strlen(cup_name);
-               char       *buf = alloca(pos - cup_name + 1);
+               char       *buf = ALLOCAN(char, pos - cup_name + 1);
                strncpy(buf, cup_name, pos - cup_name);
                buf[pos - cup_name] = '\0';
 
@@ -915,11 +841,6 @@ void be_main(FILE *file_handle, const char *cup_name)
        }
 #endif
 
-       /* never build code for pseudo irgs */
-       set_visit_pseudo_irgs(0);
-
-       be_node_init();
-
        be_main_loop(file_handle, cup_name);
 
        if (be_options.timing == BE_TIME_ON) {
@@ -928,7 +849,8 @@ void be_main(FILE *file_handle, const char *cup_name)
                stat_ev_if {
                        stat_ev_dbl("bemain_backend_time", ir_timer_elapsed_msec(t));
                } else {
-                       printf("%-20s: %lu msec\n", "BEMAINLOOP", ir_timer_elapsed_msec(t));
+                       double val = ir_timer_elapsed_usec(t) / 1000.0;
+                       printf("%-20s: %8.3lf msec\n", "BEMAINLOOP", val);
                }
        }
 
@@ -940,17 +862,35 @@ void be_main(FILE *file_handle, const char *cup_name)
 #endif
 }
 
-unsigned be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
+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();
+       (void) context;
+       (void) irp;
+       return 0;
+}
+
+ir_prog_pass_t *lower_for_target_pass(const char *name)
+{
+       ir_prog_pass_t *pass = XMALLOCZ(ir_prog_pass_t);
+       return def_prog_pass_constructor(pass,
+                                        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) == (unsigned)cls->n_regs);
+       assert(bitset_size(bs) == cls->n_regs);
        arch_put_non_ignore_regs(cls, bs);
        bitset_flip_all(bs);
-       be_abi_put_ignore_regs(birg->abi, cls, bs);
+       be_abi_put_ignore_regs(be_get_irg_abi(irg), cls, bs);
 
-       return bitset_popcnt(bs);
+       return bitset_popcount(bs);
 }