[PATCH 5/9] bt-load is ported to fibonacci_heap.

[mliska <mliska at suse dot cz>]

gcc/ChangeLog:

2014-11-13  Martin Liska  <mliska@suse.cz>

	* bt-load.c (add_btr_def): New fibonacci_heap is used.
	(migrate_btr_defs): Likewise.
---
 gcc/bt-load.c | 31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

diff --git a/gcc/bt-load.c b/gcc/bt-load.c
index 66bbf03..a9064bd 100644
--- a/gcc/bt-load.c
+++ b/gcc/bt-load.c
@@ -51,6 +51,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "df.h"
 #include "cfgloop.h"
 #include "rtl-iter.h"
+#include "fibonacci_heap.h"
 
 /* Target register optimizations - these are performed after reload.  */
 
@@ -122,23 +123,26 @@ typedef struct btr_def_s
   bitmap live_range;
 } *btr_def;
 
+typedef fibonacci_heap <long, btr_def_s> btr_heap_t;
+typedef fibonacci_node <long, btr_def_s> btr_heap_node_t;
+
 static int issue_rate;
 
 static int basic_block_freq (const_basic_block);
 static int insn_sets_btr_p (const rtx_insn *, int, int *);
 static void find_btr_def_group (btr_def_group *, btr_def);
-static btr_def add_btr_def (fibheap_t, basic_block, int, rtx_insn *,
+static btr_def add_btr_def (btr_heap_t *, basic_block, int, rtx_insn *,
 			    unsigned int, int, btr_def_group *);
 static btr_user new_btr_user (basic_block, int, rtx_insn *);
 static void dump_hard_reg_set (HARD_REG_SET);
 static void dump_btrs_live (int);
 static void note_other_use_this_block (unsigned int, btr_user);
-static void compute_defs_uses_and_gen (fibheap_t, btr_def *,btr_user *,
+static void compute_defs_uses_and_gen (btr_heap_t *, btr_def *,btr_user *,
 				       sbitmap *, sbitmap *, HARD_REG_SET *);
 static void compute_kill (sbitmap *, sbitmap *, HARD_REG_SET *);
 static void compute_out (sbitmap *bb_out, sbitmap *, sbitmap *, int);
 static void link_btr_uses (btr_def *, btr_user *, sbitmap *, sbitmap *, int);
-static void build_btr_def_use_webs (fibheap_t);
+static void build_btr_def_use_webs (btr_heap_t *);
 static int block_at_edge_of_live_range_p (int, btr_def);
 static void clear_btr_from_live_range (btr_def def);
 static void add_btr_to_live_range (btr_def, int);
@@ -290,7 +294,7 @@ find_btr_def_group (btr_def_group *all_btr_def_groups, btr_def def)
    block BB, instruction INSN, and insert it into ALL_BTR_DEFS.  Return
    the new definition.  */
 static btr_def
-add_btr_def (fibheap_t all_btr_defs, basic_block bb, int insn_luid,
+add_btr_def (btr_heap_t *all_btr_defs, basic_block bb, int insn_luid,
 	     rtx_insn *insn,
 	     unsigned int dest_reg, int other_btr_uses_before_def,
 	     btr_def_group *all_btr_def_groups)
@@ -310,7 +314,7 @@ add_btr_def (fibheap_t all_btr_defs, basic_block bb, int insn_luid,
   this_def->live_range = NULL;
   find_btr_def_group (all_btr_def_groups, this_def);
 
-  fibheap_insert (all_btr_defs, -this_def->cost, this_def);
+  all_btr_defs->insert (-this_def->cost, this_def);
 
   if (dump_file)
     fprintf (dump_file,
@@ -436,7 +440,7 @@ note_btr_set (rtx dest, const_rtx set ATTRIBUTE_UNUSED, void *data)
 }
 
 static void
-compute_defs_uses_and_gen (fibheap_t all_btr_defs, btr_def *def_array,
+compute_defs_uses_and_gen (btr_heap_t *all_btr_defs, btr_def *def_array,
 			   btr_user *use_array, sbitmap *btr_defset,
 			   sbitmap *bb_gen, HARD_REG_SET *btrs_written)
 {
@@ -767,7 +771,7 @@ link_btr_uses (btr_def *def_array, btr_user *use_array, sbitmap *bb_out,
 }
 
 static void
-build_btr_def_use_webs (fibheap_t all_btr_defs)
+build_btr_def_use_webs (btr_heap_t *all_btr_defs)
 {
   const int max_uid = get_max_uid ();
   btr_def  *def_array   = XCNEWVEC (btr_def, max_uid);
@@ -1393,7 +1397,7 @@ migrate_btr_def (btr_def def, int min_cost)
 static void
 migrate_btr_defs (enum reg_class btr_class, int allow_callee_save)
 {
-  fibheap_t all_btr_defs = fibheap_new ();
+  btr_heap_t all_btr_defs (LONG_MIN);
   int reg;
 
   gcc_obstack_init (&migrate_btrl_obstack);
@@ -1427,15 +1431,15 @@ migrate_btr_defs (enum reg_class btr_class, int allow_callee_save)
   btrs_live = XCNEWVEC (HARD_REG_SET, last_basic_block_for_fn (cfun));
   btrs_live_at_end = XCNEWVEC (HARD_REG_SET, last_basic_block_for_fn (cfun));
 
-  build_btr_def_use_webs (all_btr_defs);
+  build_btr_def_use_webs (&all_btr_defs);
 
-  while (!fibheap_empty (all_btr_defs))
+  while (!all_btr_defs.empty ())
     {
-      btr_def def = (btr_def) fibheap_extract_min (all_btr_defs);
-      int min_cost = -fibheap_min_key (all_btr_defs);
+      btr_def def = all_btr_defs.extract_min ();
+      int min_cost = -all_btr_defs.min_key ();
       if (migrate_btr_def (def, min_cost))
 	{
-	  fibheap_insert (all_btr_defs, -def->cost, (void *) def);
+	  all_btr_defs.insert (-def->cost, def);
 	  if (dump_file)
 	    {
 	      fprintf (dump_file,
@@ -1450,7 +1454,6 @@ migrate_btr_defs (enum reg_class btr_class, int allow_callee_save)
   free (btrs_live);
   free (btrs_live_at_end);
   obstack_free (&migrate_btrl_obstack, NULL);
-  fibheap_delete (all_btr_defs);
 }
 
 static void
-- 
2.1.2