Re: [PATCH 03/35] Change use to type-based pool allocator in lra-lives.c.

["Martin Liška" <mliska@suse.cz>]

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On 05/27/2015 07:47 PM, Jeff Law wrote:
> On 05/27/2015 07:56 AM, mliska wrote:
>> gcc/ChangeLog:
>>
>> 2015-04-30  Martin Liska  <mliska@suse.cz>
>>
>>     * lra-lives.c (free_live_range): Use new type-based pool allocator.
>>     (free_live_range_list) Likewise.
>>     (create_live_range) Likewise.
>>     (copy_live_range) Likewise.
>>     (lra_merge_live_ranges) Likewise.
>>     (remove_some_program_points_and_update_live_ranges) Likewise.
>>     (lra_live_ranges_init) Likewise.
>>     (lra_live_ranges_finish) Likewise.
> OK.
> jeff
>

v2.

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From f44535e764581a661d42b6d8a03bdf0de78d9789 Mon Sep 17 00:00:00 2001
From: mliska <mliska@suse.cz>
Date: Wed, 27 May 2015 15:56:44 +0200
Subject: [PATCH 03/32] Change use to type-based pool allocator in lra-lives.c.

gcc/ChangeLog:

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

	* lra-lives.c (free_live_range): Use new type-based pool allocator.
	(free_live_range_list) Likewise.
	(create_live_range) Likewise.
	(copy_live_range) Likewise.
	(lra_merge_live_ranges) Likewise.
	(remove_some_program_points_and_update_live_ranges) Likewise.
	(lra_live_ranges_init) Likewise.
	(lra_live_ranges_finish) Likewise.
---
 gcc/lra-coalesce.c |  1 +
 gcc/lra-int.h      | 15 +++++++++++++++
 gcc/lra-lives.c    | 35 ++++++++++-------------------------
 gcc/lra-spills.c   |  1 +
 gcc/lra.c          |  1 +
 5 files changed, 28 insertions(+), 25 deletions(-)

diff --git a/gcc/lra-coalesce.c b/gcc/lra-coalesce.c
index 045691d..b385603 100644
--- a/gcc/lra-coalesce.c
+++ b/gcc/lra-coalesce.c
@@ -84,6 +84,7 @@ along with GCC; see the file COPYING3.	If not see
 #include "except.h"
 #include "timevar.h"
 #include "ira.h"
+#include "alloc-pool.h"
 #include "lra-int.h"
 #include "df.h"
 
diff --git a/gcc/lra-int.h b/gcc/lra-int.h
index 12923ee..42e4a54 100644
--- a/gcc/lra-int.h
+++ b/gcc/lra-int.h
@@ -54,6 +54,21 @@ struct lra_live_range
   lra_live_range_t next;
   /* Pointer to structures with the same start.	 */
   lra_live_range_t start_next;
+
+  /* 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 ((lra_live_range *) ptr);
+  }
+
+  /* Memory allocation pool.  */
+  static pool_allocator<lra_live_range> pool;
 };
 
 typedef struct lra_copy *lra_copy_t;
diff --git a/gcc/lra-lives.c b/gcc/lra-lives.c
index 085411e..4dfe30f 100644
--- a/gcc/lra-lives.c
+++ b/gcc/lra-lives.c
@@ -121,14 +121,7 @@ static sparseset unused_set, dead_set;
 static bitmap_head temp_bitmap;
 
 /* Pool for pseudo live ranges.	 */
-static alloc_pool live_range_pool;
-
-/* Free live range LR.	*/
-static void
-free_live_range (lra_live_range_t lr)
-{
-  pool_free (live_range_pool, lr);
-}
+pool_allocator <lra_live_range> lra_live_range::pool ("live ranges", 100);
 
 /* Free live range list LR.  */
 static void
@@ -139,7 +132,7 @@ free_live_range_list (lra_live_range_t lr)
   while (lr != NULL)
     {
       next = lr->next;
-      free_live_range (lr);
+      delete lr;
       lr = next;
     }
 }
@@ -148,9 +141,7 @@ free_live_range_list (lra_live_range_t lr)
 static lra_live_range_t
 create_live_range (int regno, int start, int finish, lra_live_range_t next)
 {
-  lra_live_range_t p;
-
-  p = (lra_live_range_t) pool_alloc (live_range_pool);
+  lra_live_range_t p = new lra_live_range;
   p->regno = regno;
   p->start = start;
   p->finish = finish;
@@ -162,11 +153,7 @@ create_live_range (int regno, int start, int finish, lra_live_range_t next)
 static lra_live_range_t
 copy_live_range (lra_live_range_t r)
 {
-  lra_live_range_t p;
-
-  p = (lra_live_range_t) pool_alloc (live_range_pool);
-  *p = *r;
-  return p;
+  return new lra_live_range (*r);
 }
 
 /* Copy live range list given by its head R and return the result.  */
@@ -209,7 +196,7 @@ lra_merge_live_ranges (lra_live_range_t r1, lra_live_range_t r2)
 	  r1->start = r2->start;
 	  lra_live_range_t temp = r2;
 	  r2 = r2->next;
-	  pool_free (live_range_pool, temp);
+	  delete temp;
 	}
       else
 	{
@@ -480,7 +467,7 @@ live_con_fun_n (edge e)
   basic_block dest = e->dest;
   bitmap bb_liveout = df_get_live_out (bb);
   bitmap dest_livein = df_get_live_in (dest);
-  
+
   return bitmap_ior_and_compl_into (bb_liveout,
 				    dest_livein, &all_hard_regs_bitmap);
 }
@@ -1024,7 +1011,7 @@ process_bb_lives (basic_block bb, int &curr_point, bool dead_insn_p)
       if (sparseset_bit_p (pseudos_live_through_calls, j))
 	check_pseudos_live_through_calls (j);
     }
-  
+
   if (need_curr_point_incr)
     next_program_point (curr_point, freq);
 
@@ -1109,7 +1096,7 @@ remove_some_program_points_and_update_live_ranges (void)
 		}
 	      prev_r->start = r->start;
 	      prev_r->next = next_r;
-	      free_live_range (r);
+	      delete r;
 	    }
 	}
     }
@@ -1252,7 +1239,7 @@ lra_create_live_ranges_1 (bool all_p, bool dead_insn_p)
 	}
     }
   lra_free_copies ();
- 
+
   /* Under some circumstances, we can have functions without pseudo
      registers.  For such functions, lra_live_max_point will be 0,
      see e.g. PR55604, and there's nothing more to do for us here.  */
@@ -1380,8 +1367,6 @@ lra_clear_live_ranges (void)
 void
 lra_live_ranges_init (void)
 {
-  live_range_pool = create_alloc_pool ("live ranges",
-				       sizeof (struct lra_live_range), 100);
   bitmap_initialize (&temp_bitmap, &reg_obstack);
   initiate_live_solver ();
 }
@@ -1392,5 +1377,5 @@ lra_live_ranges_finish (void)
 {
   finish_live_solver ();
   bitmap_clear (&temp_bitmap);
-  free_alloc_pool (live_range_pool);
+  lra_live_range::pool.release ();
 }
diff --git a/gcc/lra-spills.c b/gcc/lra-spills.c
index 19ece20..caece9a 100644
--- a/gcc/lra-spills.c
+++ b/gcc/lra-spills.c
@@ -98,6 +98,7 @@ along with GCC; see the file COPYING3.	If not see
 #include "except.h"
 #include "timevar.h"
 #include "target.h"
+#include "alloc-pool.h"
 #include "lra-int.h"
 #include "ira.h"
 #include "df.h"
diff --git a/gcc/lra.c b/gcc/lra.c
index 7c33636..7440668 100644
--- a/gcc/lra.c
+++ b/gcc/lra.c
@@ -149,6 +149,7 @@ along with GCC; see the file COPYING3.	If not see
 #include "timevar.h"
 #include "target.h"
 #include "ira.h"
+#include "alloc-pool.h"
 #include "lra-int.h"
 #include "df.h"
 
-- 
2.1.4