removed dangerous get_nodes_block()

[libfirm] / ir / be / bemain.c

diff --git a/ir/be/bemain.c b/ir/be/bemain.c
index 7db0979..0b4f639 100644 (file)
--- a/ir/be/bemain.c
+++ b/ir/be/bemain.c
@@ -18,10 +18,11 @@
  */
 
 /**
- * Backend driver.
- * @author Sebastian Hack
- * @date   25.11.2004
- * @cvsid  $Id$
+ * @file
+ * @brief       Main Backend driver.
+ * @author      Sebastian Hack
+ * @date        25.11.2004
+ * @version     $Id$
  */
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -48,9 +49,7 @@
 #include "irtools.h"
 #include "irvrfy.h"
 #include "irprintf.h"
-#include "return.h"
 #include "firmstat.h"
-#include "cfopt.h"
 #include "execfreq.h"
 
 #include "bearch_t.h"
@@ -64,7 +63,6 @@
 #include "belive_t.h"
 #include "bespillbelady.h"
 #include "bera.h"
-#include "beraextern.h"
 #include "bechordal_t.h"
 #include "beifg.h"
 #include "beifg_impl.h"
@@ -78,6 +76,7 @@
 #include "beverify.h"
 #include "beprofile.h"
 #include "be_dbgout.h"
+#include "beirg_t.h"
 
 #ifdef WITH_ILP
 #include "beilpsched.h"
@@ -205,10 +204,14 @@ int be_parse_arg(const char *arg) {
 
 /** The be parameters returned by default, all off. */
 const static backend_params be_params = {
-       NULL,
-       NULL,
-       0,
-       NULL,
+       0,    /* need dword lowering */
+       0,    /* don't support inlien assembler yet */
+       0,    /* no different calling conventions */
+       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 */
 };
 
 /* Perform schedule verification if requested. */
@@ -311,8 +314,9 @@ static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
        /* Normalize proj nodes. */
        normalize_proj_nodes(irg);
 
-       /* Make just one return node. */
-       normalize_one_return(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);
 
        /* Remove critical edges */
        remove_critical_cf_edges(irg);
@@ -324,6 +328,8 @@ static void initialize_birg(be_irg_t *birg, ir_graph *irg, be_main_env_t *env)
        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)                                                        \
@@ -531,11 +537,14 @@ static void be_main_loop(FILE *file_handle, const char *cup_name)
                /**
                 * Create execution frequencies from profile data or estimate some
                 */
-               if (be_profile_has_data()) {
+               if (be_profile_has_data())
                        birg->exec_freq = be_create_execfreqs_from_profile(irg);
-               } else {
+               else
                        birg->exec_freq = compute_execfreq(irg, 10);
-               }
+
+
+               /* disabled for now, fails for EmptyFor.c and XXEndless.c */
+               /* be_live_chk_compare(birg); */
 
                /* let backend prepare scheduling */
                BE_TIMER_PUSH(t_codegen);
@@ -814,14 +823,14 @@ const char *be_retrieve_dbg_info(const dbg_info *dbg, unsigned *line) {
        return NULL;
 }
 
-int be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
+unsigned be_put_ignore_regs(const be_irg_t *birg, const arch_register_class_t *cls, bitset_t *bs)
 {
-       if(bs == NULL)
+       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) == (unsigned)cls->n_regs);
        arch_put_non_ignore_regs(birg->main_env->arch_env, cls, bs);
        bitset_flip_all(bs);
        be_abi_put_ignore_regs(birg->abi, cls, bs);