Do not forcefully rebuild outedges in compute_execfreq(), but handle this at the...
[libfirm] / ir / be / bemain.c
index 311abc7..23e0261 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -31,9 +31,8 @@
 #include <stdarg.h>
 #include <stdio.h>
 
-#include <libcore/lc_opts.h>
-#include <libcore/lc_opts_enum.h>
-#include <libcore/lc_timing.h>
+#include "lc_opts.h"
+#include "lc_opts_enum.h"
 
 #include "obst.h"
 #include "bitset.h"
 #include "irtools.h"
 #include "irvrfy.h"
 #include "irprintf.h"
+#include "iroptimize.h"
 #include "firmstat.h"
 #include "execfreq.h"
+#include "irprofile.h"
 
 #include "bearch_t.h"
 #include "be_t.h"
@@ -61,7 +62,6 @@
 #include "besched_t.h"
 #include "belistsched.h"
 #include "belive_t.h"
-#include "bespillbelady.h"
 #include "bera.h"
 #include "bechordal_t.h"
 #include "beifg.h"
 #include "beschedmris.h"
 #include "bestat.h"
 #include "beverify.h"
-#include "beprofile.h"
 #include "be_dbgout.h"
 #include "beirg_t.h"
 
+#define NEW_ID(s) new_id_from_chars(s, sizeof(s) - 1)
+
 #ifdef WITH_ILP
 #include "beilpsched.h"
 #endif /* WITH_ILP */
@@ -87,13 +88,17 @@ static be_options_t be_options = {
        DUMP_NONE,                         /* dump flags */
        BE_TIME_OFF,                       /* no timing */
        0,                                 /* no opt profile */
-       1,                                 /* try to omit frame pointer */
-       0,                                 /* no stabs debugging output */
+       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 */
+       "linux",                           /* target OS name */
        "i44pc52.info.uni-karlsruhe.de",   /* ilp server */
        "cplex",                           /* ilp solver */
        0,                                 /* enable statistic event dumping */
+       "",                                /* print stat events */
 };
 
 /* config file. */
@@ -146,15 +151,21 @@ static lc_opt_enum_int_var_t sched_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_NEGBOOL  ("noomitfp", "do not omit frame pointer",                           &be_options.omit_fp),
-       LC_OPT_ENT_BOOL     ("stabs",    "enable stabs debug support",                          &be_options.stabs_debug_support),
-       LC_OPT_ENT_ENUM_PTR ("vrfy",     "verify the backend irg",                              &vrfy_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_BOOL     ("statev",   "dump statistic events",                               &be_options.statev),
+       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_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),
+       LC_OPT_ENT_STR      ("filtev",     "filter for stat events (regex if support is active",  &be_options.filtev, sizeof(be_options.filtev)),
+#endif
 
 #ifdef WITH_ILP
        LC_OPT_ENT_STR ("ilp.server", "the ilp server name", be_options.ilp_server, sizeof(be_options.ilp_server)),
@@ -165,9 +176,139 @@ static const lc_opt_table_entry_t be_main_options[] = {
 
 static be_module_list_entry_t *isa_ifs = NULL;
 
+
+unsigned short asm_constraint_flags[256];
+
+void be_init_default_asm_constraint_flags(void)
+{
+       asm_constraint_flags['?'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+       asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+       asm_constraint_flags['&'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
+               | ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER;
+       asm_constraint_flags['%'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT
+               | ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE;
+       asm_constraint_flags['!'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+
+       asm_constraint_flags['='] = ASM_CONSTRAINT_FLAG_MODIFIER_WRITE
+               | ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ;
+       asm_constraint_flags['+'] = ASM_CONSTRAINT_FLAG_MODIFIER_READ
+               | ASM_CONSTRAINT_FLAG_MODIFIER_WRITE;
+
+       asm_constraint_flags['i'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['s'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['E'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['F'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['G'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['H'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['I'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['J'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['K'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['L'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['M'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['N'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['O'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+       asm_constraint_flags['P'] = ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+
+       asm_constraint_flags['m'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
+       asm_constraint_flags['o'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
+       asm_constraint_flags['V'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
+       asm_constraint_flags['<'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
+       asm_constraint_flags['>'] = ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP;
+
+       asm_constraint_flags['p'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['0'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['1'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['2'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['3'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['4'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['5'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['6'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['7'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['8'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+       asm_constraint_flags['9'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER;
+
+       asm_constraint_flags['X'] = ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER
+               | ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP
+               | ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE;
+
+       /* these should have been catched by the parsing code already */
+       asm_constraint_flags['#']  = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+       asm_constraint_flags['*']  = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+       asm_constraint_flags[' ']  = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+       asm_constraint_flags['\t'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+       asm_constraint_flags['\n'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+       asm_constraint_flags['\r'] = ASM_CONSTRAINT_FLAG_NO_SUPPORT;
+}
+
+asm_constraint_flags_t be_parse_asm_constraints(const char *constraint)
+{
+       asm_constraint_flags_t  flags = 0;
+       const char             *c;
+       asm_constraint_flags_t  tflags;
+
+       for (c = constraint; *c != '\0'; ++c) {
+               switch (*c) {
+               case '#':
+                       /* 'comment' stuff */
+                       while(*c != 0 && *c != ',')
+                               ++c;
+                       break;
+               case '*':
+                       /* 'comment' character */
+                       ++c;
+                       break;
+               case ' ':
+               case '\t':
+               case '\n':
+               case '\r':
+                       break;
+               default:
+                       tflags = asm_constraint_flags[(int) *c];
+                       if (tflags != 0) {
+                               flags |= tflags;
+                       } else {
+                               flags |= isa_if->parse_asm_constraint(isa_if, &c);
+                       }
+                       break;
+               }
+       }
+
+       if ((
+               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_INVALID;
+       }
+       if (!(flags & (ASM_CONSTRAINT_FLAG_MODIFIER_READ     |
+                      ASM_CONSTRAINT_FLAG_MODIFIER_WRITE    |
+                      ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE |
+                      ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ)
+           )) {
+               flags |= ASM_CONSTRAINT_FLAG_MODIFIER_READ;
+       }
+
+       return flags;
+}
+
+int be_is_valid_clobber(const char *clobber)
+{
+       /* 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)
+               return 1;
+       /* cc (condition code) is always valid */
+       if (strcmp(clobber, "cc") == 0)
+               return 1;
+
+       return isa_if->is_valid_clobber(isa_if, clobber);
+}
+
 void be_register_isa_if(const char *name, const arch_isa_if_t *isa)
 {
-       if(isa_if == NULL)
+       if (isa_if == NULL)
                isa_if = isa;
 
        be_add_module_to_list(&isa_ifs, name, (void*) isa);
@@ -205,30 +346,41 @@ int be_parse_arg(const char *arg) {
 /** The be parameters returned by default, all off. */
 static const backend_params be_params = {
        0,    /* need dword lowering */
-       0,    /* don't support inlien assembler yet */
+       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) {
+       } else if (vrfy_opt == BE_VRFY_ASSERT) {
                assert(be_verify_schedule(birg) && "Schedule verification failed.");
        }
 }
 
-/* Initialize the Firm backend. Must be run BEFORE init_firm()! */
-const backend_params *be_init(void)
+/* Initialize the Firm backend. Must be run first in init_firm()! */
+void firm_be_init(void)
 {
        be_opt_register();
        be_init_modules();
+}
 
+/* Finalize the Firm backend. */
+void firm_be_finish(void)
+{
+       be_quit_modules();
+}
+
+/* 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;
@@ -243,35 +395,38 @@ const backend_params *be_init(void)
 static be_main_env_t *be_init_env(be_main_env_t *env, FILE *file_handle)
 {
        memset(env, 0, sizeof(*env));
-       obstack_init(&env->obst);
-       env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
-       env->options  = &be_options;
+       env->options              = &be_options;
+       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"));
 
-       arch_env_init(env->arch_env, isa_if, file_handle, env);
+       remove_irp_type(env->pic_trampolines_type);
+       remove_irp_type(env->pic_symbols_type);
+       set_class_final(env->pic_trampolines_type, 1);
 
-       /* Register the irn handler of the architecture */
-       if (arch_isa_get_irn_handler(env->arch_env->isa))
-               arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
+       memset(asm_constraint_flags, 0, sizeof(asm_constraint_flags));
+       env->arch_env = arch_env_init(isa_if, file_handle, env);
 
-       /*
-        * Register the node handler of the back end infrastructure.
-        * This irn handler takes care of the platform independent
-        * spill, reload and perm nodes.
-        */
-       arch_env_push_irn_handler(env->arch_env, &be_node_irn_handler);
-       env->phi_handler = be_phi_handler_new(env->arch_env);
-       arch_env_push_irn_handler(env->arch_env, env->phi_handler);
-
-       env->db_handle = be_options.stabs_debug_support ? be_stabs_open(file_handle) : be_nulldbg_open();
+       be_phi_handler_new(env);
+
+       be_dbg_open();
        return env;
 }
 
+/**
+ * Called when the be_main_env_t can be destroyed.
+ */
 static void be_done_env(be_main_env_t *env)
 {
-       env->arch_env->isa->impl->done(env->arch_env->isa);
-       be_dbg_close(env->db_handle);
-       be_phi_handler_free(env->phi_handler);
-       obstack_free(&env->obst, NULL);
+       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);
+       free_type(env->pic_trampolines_type);
+       free_type(env->pic_symbols_type);
 }
 
 /**
@@ -318,40 +473,41 @@ static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
        normalize_n_returns(irg);
 
        /* Remove critical edges */
-       remove_critical_cf_edges(irg);
+       remove_critical_cf_edges_ex(irg, /*ignore_exception_edges=*/0);
 
        /* Ensure, that the ir_edges are computed. */
        edges_assure(irg);
 
-       /* reset the phi handler. */
-       be_phi_handler_reset(env->phi_handler);
-
        set_irg_phase_state(irg, phase_backend);
 
        dump(DUMP_INITIAL, irg, "-prepared", dump_ir_block_graph);
 }
 
-#define BE_TIMER_PUSH(timer)                                                        \
-       if (be_options.timing == BE_TIME_ON) {                                          \
-               int res = lc_timer_push(timer);                                             \
-               if (be_options.vrfy_option == BE_VRFY_ASSERT)                               \
-                       assert(res && "Timer already on stack, cannot be pushed twice.");       \
-               else if (be_options.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 (be_options.vrfy_option == BE_VRFY_ASSERT)                                          \
-                       assert(tmp == timer && "Attempt to pop wrong timer.");                             \
-               else if (be_options.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)
+#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;
 
 /**
  * The Firm backend main loop.
@@ -364,49 +520,53 @@ static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
 static void be_main_loop(FILE *file_handle, const char *cup_name)
 {
        int i;
-       arch_isa_t *isa;
        be_main_env_t env;
-       unsigned num_nodes_b = 0;
-       unsigned num_nodes_a = 0;
-       unsigned num_nodes_r = 0;
        char prof_filename[256];
        static const char suffix[] = ".prof";
        be_irg_t *birgs;
        int num_birgs;
        ir_graph **irg_list, **backend_irg_list;
-
-       lc_timer_t *t_abi      = NULL;
-       lc_timer_t *t_codegen  = NULL;
-       lc_timer_t *t_sched    = NULL;
-       lc_timer_t *t_constr   = NULL;
-       lc_timer_t *t_regalloc = NULL;
-       lc_timer_t *t_finish   = NULL;
-       lc_timer_t *t_emit     = NULL;
-       lc_timer_t *t_other    = NULL;
-       lc_timer_t *t_verify   = NULL;
-
-       if (be_options.timing == BE_TIME_ON) {
-               t_abi      = lc_timer_register("beabi",    "be abi introduction");
-               t_codegen  = lc_timer_register("codegen",  "codegeneration");
-               t_sched    = lc_timer_register("sched",    "scheduling");
-               t_constr   = lc_timer_register("constr",   "assure constraints");
-               t_regalloc = lc_timer_register("regalloc", "register allocation");
-               t_finish   = lc_timer_register("finish",   "graph finish");
-               t_emit     = lc_timer_register("emiter",   "code emiter");
-               t_verify   = lc_timer_register("verify",   "graph verification");
-               t_other    = lc_timer_register("other",    "other");
+       arch_env_t *arch_env;
+
+       be_timing = (be_options.timing == BE_TIME_ON);
+
+       if (be_timing) {
+               t_abi        = ir_timer_register("time_beabi",       "be abi introduction");
+               t_codegen    = ir_timer_register("time_codegen",     "codegeneration");
+               t_sched      = ir_timer_register("time_sched",       "scheduling");
+               t_constr     = ir_timer_register("time_constr",      "assure constraints");
+               t_finish     = ir_timer_register("time_finish",      "graph finish");
+               t_emit       = ir_timer_register("time_emiter",      "code emiter");
+               t_verify     = ir_timer_register("time_verify",      "graph verification");
+               t_other      = ir_timer_register("time_other",       "other");
+               t_heights    = ir_timer_register("time_heights",     "heights");
+               t_live       = ir_timer_register("time_liveness",    "be liveness");
+               t_execfreq   = ir_timer_register("time_execfreq",    "execfreq");
+               t_ssa_constr = ir_timer_register("time_ssa_constr",  "ssa reconstruction");
+               t_ra_prolog  = ir_timer_register("time_ra_prolog",   "regalloc prolog");
+               t_ra_epilog  = ir_timer_register("time_ra_epilog",   "regalloc epilog");
+               t_ra_constr  = ir_timer_register("time_ra_constr",   "regalloc constraints");
+               t_ra_spill   = ir_timer_register("time_ra_spill",    "spiller");
+               t_ra_spill_apply
+                       = ir_timer_register("time_ra_spill_apply", "apply spills");
+               t_ra_color   = ir_timer_register("time_ra_color",    "graph coloring");
+               t_ra_ifg     = ir_timer_register("time_ra_ifg",      "interference graph");
+               t_ra_copymin = ir_timer_register("time_ra_copymin",  "copy minimization");
+               t_ra_ssa     = ir_timer_register("time_ra_ssadestr", "ssa destruction");
+               t_ra_other   = ir_timer_register("time_ra_other",    "regalloc other");
        }
 
        be_init_env(&env, file_handle);
+       env.cup_name = cup_name;
 
-       isa = arch_env_get_isa(env.arch_env);
+       be_dbg_so(cup_name);
+       be_dbg_types();
 
-       be_dbg_so(env.db_handle, cup_name);
-       be_dbg_types(env.db_handle);
+       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_isa_get_backend_irg_list(isa, &irg_list);
+       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();
@@ -432,12 +592,11 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                or try to read in profile data for current translation unit.
        */
        if (be_options.opt_profile) {
-               ir_graph *prof_init_irg = be_profile_instrument(prof_filename, profile_default);
+               ir_graph *prof_init_irg = ir_profile_instrument(prof_filename, profile_default);
                initialize_birg(&birgs[num_birgs], prof_init_irg, &env);
                num_birgs++;
-               set_method_img_section(get_irg_entity(prof_init_irg), section_constructors);
        } else {
-               be_profile_read(prof_filename);
+               ir_profile_read(prof_filename);
        }
 
        /* For all graphs */
@@ -450,22 +609,20 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                /* set the current graph (this is important for several firm functions) */
                current_ir_graph = irg;
 
-#ifdef FIRM_STATISTICS
-               stat_ev_ctx_push_fobj("irg", irg);
+#if 0
+               {
+                       unsigned percent = 100*i/num_birgs;
+                       ir_printf("%u.%02u %+F\n", percent/100, percent%100, irg);
+               }
 #endif
+               be_sched_init_phase(irg);
+
+               /* reset the phi handler. */
+               be_phi_handler_reset();
+
+               stat_ev_ctx_push_fobj("bemain_irg", irg);
 
                /* stop and reset timers */
-               BE_TIMER_ONLY(
-                       LC_STOP_AND_RESET_TIMER(t_abi);
-                       LC_STOP_AND_RESET_TIMER(t_codegen);
-                       LC_STOP_AND_RESET_TIMER(t_sched);
-                       LC_STOP_AND_RESET_TIMER(t_constr);
-                       LC_STOP_AND_RESET_TIMER(t_regalloc);
-                       LC_STOP_AND_RESET_TIMER(t_finish);
-                       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 */
 
                /* Verify the initial graph */
@@ -479,10 +636,8 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                }
                BE_TIMER_POP(t_verify);
 
-               BE_TIMER_ONLY(num_nodes_b = get_num_reachable_nodes(irg));
-
                /* Get the code generator interface. */
-               cg_if = isa->impl->get_code_generator_if(isa);
+               cg_if = arch_env_get_code_generator_if(arch_env);
 
                /* get a code generator for this graph. */
                birg->cg = cg_if->init(birg);
@@ -490,9 +645,6 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                /* some transformations need to be done before abi introduce */
                arch_code_generator_before_abi(birg->cg);
 
-               /* reset the phi handler. */
-               be_phi_handler_reset(env.phi_handler);
-
                /* implement the ABI conventions. */
                BE_TIMER_PUSH(t_abi);
                birg->abi = be_abi_introduce(birg);
@@ -510,14 +662,18 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                }
 
                /* generate code */
+               stat_ev_ctx_push_str("bemain_phase", "prepare");
                BE_TIMER_PUSH(t_codegen);
                arch_code_generator_prepare_graph(birg->cg);
                BE_TIMER_POP(t_codegen);
+               stat_ev_ctx_pop("bemain_phase");
+
+               /* reset the phi handler. */
+               be_phi_handler_reset();
 
                be_do_stat_nodes(irg, "03 Prepare");
 
                dump(DUMP_PREPARED, irg, "-prepared", dump_ir_block_graph);
-               BE_TIMER_ONLY(num_nodes_r = get_num_reachable_nodes(irg));
 
                if (be_options.vrfy_option == BE_VRFY_WARN) {
                        be_check_dominance(irg);
@@ -527,22 +683,30 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                        assert(be_check_dominance(irg) && "Dominance verification failed");
                }
 
+               BE_TIMER_PUSH(t_execfreq);
                /**
                 * Create execution frequencies from profile data or estimate some
                 */
-               if (be_profile_has_data())
-                       birg->exec_freq = be_create_execfreqs_from_profile(irg);
-               else
+               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);
 
 
                /* disabled for now, fails for EmptyFor.c and XXEndless.c */
                /* be_live_chk_compare(birg); */
 
                /* let backend prepare scheduling */
+               stat_ev_ctx_push_str("bemain_phase", "before_sched");
                BE_TIMER_PUSH(t_codegen);
                arch_code_generator_before_sched(birg->cg);
                BE_TIMER_POP(t_codegen);
+               stat_ev_ctx_pop("bemain_phase");
 
                /* schedule the irg */
                BE_TIMER_PUSH(t_sched);
@@ -575,6 +739,9 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                save_optimization_state(&state);
                set_optimize(0);
                set_opt_normalize(0);
+               set_opt_cse(0);
+
+               assert(!get_opt_cse());
 
                /* add Keeps for should_be_different constrained nodes  */
                /* beware: needs schedule due to usage of be_ssa_constr */
@@ -602,19 +769,17 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                BE_TIMER_POP(t_verify);
 
                /* do some statistics */
-               be_do_stat_reg_pressure(birg);
+               //be_do_stat_reg_pressure(birg);
 
 #ifdef FIRM_STATISTICS
-               stat_ev_dbl("costs_before_ra", be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
+               stat_ev_dbl("costs_before_ra", be_estimate_irg_costs(irg, arch_env, birg->exec_freq));
 #endif
 
                /* Do register allocation */
-               BE_TIMER_PUSH(t_regalloc);
                be_allocate_registers(birg);
-               BE_TIMER_POP(t_regalloc);
 
 #ifdef FIRM_STATISTICS
-               stat_ev_dbl("costs_before_ra", be_estimate_irg_costs(irg, env.arch_env, birg->exec_freq));
+               stat_ev_dbl("costs_before_ra", be_estimate_irg_costs(irg, arch_env, birg->exec_freq));
 #endif
 
                dump(DUMP_RA, irg, "-ra", dump_ir_block_graph_sched);
@@ -647,13 +812,13 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                        be_check_dominance(irg);
                        be_verify_out_edges(irg);
                        be_verify_schedule(birg);
-                       be_verify_register_allocation(env.arch_env, irg);
+                       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");
                        assert(be_check_dominance(irg) && "Dominance verification failed");
                        assert(be_verify_schedule(birg) && "Schedule verification failed");
-                       assert(be_verify_register_allocation(env.arch_env, irg)
+                       assert(be_verify_register_allocation(birg)
                               && "register allocation verification failed");
 
                }
@@ -673,48 +838,50 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                be_do_stat_nodes(irg, "07 Final");
                restore_optimization_state(&state);
 
-               BE_TIMER_ONLY(num_nodes_a = get_num_reachable_nodes(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); \
-               stat_ev_dbl(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer));
+#define STOP_AND_RESET_TIMER(timer) do { ir_timer_stop(timer); ir_timer_reset(timer); } while(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); \
-               stat_ev_dbl(lc_timer_get_name(timer), lc_timer_elapsed_msec(timer)); \
+#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(
-                       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);
-                       printf("# nodes at end:    %u\n\n", num_nodes_a);
+                       stat_ev_if {
+                       } else {
+                               printf("==>> IRG %s <<==\n", get_entity_name(get_irg_entity(irg)));
+                       }
                        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_regalloc);
-                       if(global_ra_timer != NULL) {
-                               LC_EMIT_RA(global_ra_timer->t_prolog);
-                               LC_EMIT_RA(global_ra_timer->t_live);
-                               LC_EMIT_RA(global_ra_timer->t_spill);
-                               LC_EMIT_RA(global_ra_timer->t_spillslots);
-                               LC_EMIT_RA(global_ra_timer->t_color);
-                               LC_EMIT_RA(global_ra_timer->t_ifg);
-                               LC_EMIT_RA(global_ra_timer->t_copymin);
-                               LC_EMIT_RA(global_ra_timer->t_ssa);
-                               LC_EMIT_RA(global_ra_timer->t_epilog);
-                               LC_EMIT_RA(global_ra_timer->t_verify);
-                               LC_EMIT_RA(global_ra_timer->t_other);
-                       }
+                       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_RA
 #undef LC_EMIT
 
+               be_sched_free_phase(irg);
+
                be_free_birg(birg);
 
         /* switched off due to statistics (statistic module needs all irgs) */
@@ -724,49 +891,49 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
 #endif /* FIRM_STATISTICS */
                        free_ir_graph(irg);
 #endif /* if 0 */
-               stat_ev_ctx_pop();
+               stat_ev_ctx_pop("bemain_irg");
        }
-       be_profile_free();
+       ir_profile_free();
        be_done_env(&env);
-
-#undef BE_TIMER_POP
-#undef BE_TIMER_PUSH
-#undef BE_TIMER_ONLY
 }
 
 /* Main interface to the frontend. */
 void be_main(FILE *file_handle, const char *cup_name)
 {
-       lc_timer_t *t = NULL;
+       ir_timer_t *t = NULL;
 
        /* The user specified another config file to read. do that now. */
-       if(strlen(config_file) > 0) {
+       if (config_file[0] != '\0') {
                FILE *f;
 
-               if((f = fopen(config_file, "rt")) != NULL) {
+               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");
+               t = ir_timer_register("bemain", "measure complete bemain loop");
 
-               if (lc_timer_enter_high_priority()) {
+               if (ir_timer_enter_high_priority()) {
                        fprintf(stderr, "Warning: Could not enter high priority mode.\n");
                }
 
-               lc_timer_reset_and_start(t);
+               ir_timer_reset_and_start(t);
        }
 
+#ifdef FIRM_STATISTICS
        if (be_options.statev) {
-               const char *dot = rindex(cup_name, '.');
+               const char *dot = strrchr(cup_name, '.');
                const char *pos = dot ? dot : cup_name + strlen(cup_name);
                char       *buf = alloca(pos - cup_name + 1);
                strncpy(buf, cup_name, pos - cup_name);
+               buf[pos - cup_name] = '\0';
 
-               stat_ev_begin(buf);
+               be_options.statev = 1;
+               stat_ev_begin(buf, be_options.filtev);
        }
+#endif
 
        /* never build code for pseudo irgs */
        set_visit_pseudo_irgs(0);
@@ -776,31 +943,19 @@ void be_main(FILE *file_handle, const char *cup_name)
        be_main_loop(file_handle, cup_name);
 
        if (be_options.timing == BE_TIME_ON) {
-               lc_timer_stop(t);
-               lc_timer_leave_high_priority();
-               stat_ev_dbl("backend_time", lc_timer_elapsed_msec(t));
-               printf("%-20s: %lu msec\n", "BEMAINLOOP", lc_timer_elapsed_msec(t));
+               ir_timer_stop(t);
+               ir_timer_leave_high_priority();
+               stat_ev_if {
+                       stat_ev_dbl("backend_time", ir_timer_elapsed_msec(t));
+               } else {
+                       printf("%-20s: %lu msec\n", "BEMAINLOOP", ir_timer_elapsed_msec(t));
+               }
        }
 
+#ifdef FIRM_STATISTICS
        if (be_options.statev)
                stat_ev_end();
-}
-
-/** The debug info retriever function. */
-static retrieve_dbg_func retrieve_dbg = NULL;
-
-/* Sets a debug info retriever. */
-void be_set_debug_retrieve(retrieve_dbg_func func) {
-       retrieve_dbg = func;
-}
-
-/* Retrieve the debug info. */
-const char *be_retrieve_dbg_info(const dbg_info *dbg, unsigned *line) {
-       if (retrieve_dbg)
-               return retrieve_dbg(dbg, line);
-
-       *line = 0;
-       return NULL;
+#endif
 }
 
 unsigned be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)