[PATCH 21/35] Change use to type-based pool allocator in regcprop.c.

[mliska <mliska at suse dot cz>]

gcc/ChangeLog:

2015-04-30  Martin Liska  <mliska@suse.cz>

	* regcprop.c (free_debug_insn_changes): Use new type-based pool allocator.
	(replace_oldest_value_reg): Likewise.
	(pass_cprop_hardreg::execute): Likewise.
---
 gcc/regcprop.c | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/gcc/regcprop.c b/gcc/regcprop.c
index 7d7a9a09..0755d83 100644
--- a/gcc/regcprop.c
+++ b/gcc/regcprop.c
@@ -62,6 +62,21 @@ struct queued_debug_insn_change
   rtx_insn *insn;
   rtx *loc;
   rtx new_rtx;
+
+  /* Pool allocation new operator.  */
+  inline void *operator new (size_t)
+  {
+    return pool.allocate ();
+  }
+
+  /* Delete operator utilizing pool allocation.  */
+  inline void operator delete (void *ptr)
+  {
+    pool.remove((queued_debug_insn_change *) ptr);
+  }
+
+  /* Memory allocation pool.  */
+  static pool_allocator<queued_debug_insn_change> pool;
 };
 
 /* For each register, we have a list of registers that contain the same
@@ -85,7 +100,9 @@ struct value_data
   unsigned int n_debug_insn_changes;
 };
 
-static alloc_pool debug_insn_changes_pool;
+pool_allocator<queued_debug_insn_change> queued_debug_insn_change::pool 
+  ("debug insn changes pool", 256);
+
 static bool skip_debug_insn_p;
 
 static void kill_value_one_regno (unsigned, struct value_data *);
@@ -124,7 +141,7 @@ free_debug_insn_changes (struct value_data *vd, unsigned int regno)
     {
       next = cur->next;
       --vd->n_debug_insn_changes;
-      pool_free (debug_insn_changes_pool, cur);
+      delete cur;
     }
   vd->e[regno].debug_insn_changes = NULL;
 }
@@ -495,8 +512,7 @@ replace_oldest_value_reg (rtx *loc, enum reg_class cl, rtx_insn *insn,
 	    fprintf (dump_file, "debug_insn %u: queued replacing reg %u with %u\n",
 		     INSN_UID (insn), REGNO (*loc), REGNO (new_rtx));
 
-	  change = (struct queued_debug_insn_change *)
-		   pool_alloc (debug_insn_changes_pool);
+	  change = new queued_debug_insn_change; 
 	  change->next = vd->e[REGNO (new_rtx)].debug_insn_changes;
 	  change->insn = insn;
 	  change->loc = loc;
@@ -1244,11 +1260,6 @@ pass_cprop_hardreg::execute (function *fun)
   visited = sbitmap_alloc (last_basic_block_for_fn (fun));
   bitmap_clear (visited);
 
-  if (MAY_HAVE_DEBUG_INSNS)
-    debug_insn_changes_pool
-      = create_alloc_pool ("debug insn changes pool",
-			   sizeof (struct queued_debug_insn_change), 256);
-
   FOR_EACH_BB_FN (bb, fun)
     {
       bitmap_set_bit (visited, bb->index);
@@ -1308,7 +1319,7 @@ pass_cprop_hardreg::execute (function *fun)
 		}
 	  }
 
-      free_alloc_pool (debug_insn_changes_pool);
+      queued_debug_insn_change::pool.release ();
     }
 
   sbitmap_free (visited);
-- 
2.1.4