Patch from Dan Nicolaescu

* rtl.h (dump_rtx_statistics): Declare it.
* rtl.c (rtx_alloc_counts, rtx_alloc_sizes, rtvec_alloc_counts,
rtx_alloc_sizes): New static vars.
(rtx_alloc, rtvec_alloc): Update them.
(dump_rtx_statistics): New function.
* toplev.c (finalize): Call it.
* ggc-page.c (struct globals): Fix comments. Add new member
total_allocated_per_order.
(ggc_alloc): Keep track of the total allocated memory.
(ggc_print_statistics): Clarify message. Print total allocated
memory stats.
* configure.in (gather-detailed-mem-stats): New flag.
* configure: Regenerate.
* config.in: Regenerate.
* doc/install.texi (Configuration): Document
--enable-gather-detailed-mem-stats.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@74930 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 50 insertions, 0 deletions

diff --git a/gcc/rtl.c b/gcc/rtl.c
index 26891c30d7a..313e2cb2b5c 100644
--- a/gcc/rtl.c
+++ b/gcc/rtl.c
@@ -138,6 +138,14 @@ const char * const reg_note_name[] =
   "REG_VTABLE_REF"
 };
 
+
+#ifdef GATHER_STATISTICS
+static int rtx_alloc_counts[(int) LAST_AND_UNUSED_RTX_CODE];
+static int rtx_alloc_sizes[(int) LAST_AND_UNUSED_RTX_CODE];
+static int rtvec_alloc_counts;
+static int rtvec_alloc_sizes;
+#endif
+
 
 /* Allocate an rtx vector of N elements.
    Store the length, and initialize all elements to zero.  */
@@ -152,6 +160,12 @@ rtvec_alloc (int n)
   memset (&rt->elem[0], 0, n * sizeof (rtx));
 
   PUT_NUM_ELEM (rt, n);
+
+#ifdef GATHER_STATISTICS
+  rtvec_alloc_counts++;
+  rtvec_alloc_sizes += n * sizeof (rtx);
+#endif
+
   return rt;
 }
 
@@ -171,6 +185,12 @@ rtx_alloc (RTX_CODE code)
 
   memset (rt, 0, RTX_HDR_SIZE);
   PUT_CODE (rt, code);
+
+#ifdef GATHER_STATISTICS
+  rtx_alloc_counts[code]++;
+  rtx_alloc_sizes[code] += RTX_SIZE (code);
+#endif
+
   return rt;
 }
 
@@ -417,6 +437,36 @@ rtx_equal_p (rtx x, rtx y)
     }
   return 1;
 }
+
+void dump_rtx_statistics (void)
+{
+#ifdef GATHER_STATISTICS
+  int i;
+  int total_counts = 0;
+  int total_sizes = 0;
+  fprintf (stderr, "\nRTX Kind               Count      Bytes\n");
+  fprintf (stderr, "---------------------------------------\n");
+  for (i = 0; i < LAST_AND_UNUSED_RTX_CODE; i++)
+    if (rtx_alloc_counts[i])
+      {
+        fprintf (stderr, "%-20s %7d %10d\n", GET_RTX_NAME (i),
+                 rtx_alloc_counts[i], rtx_alloc_sizes[i]);
+        total_counts += rtx_alloc_counts[i];
+        total_sizes += rtx_alloc_sizes[i];
+      }
+  if (rtvec_alloc_counts)
+    {
+      fprintf (stderr, "%-20s %7d %10d\n", "rtvec",
+               rtvec_alloc_counts, rtvec_alloc_sizes);
+      total_counts += rtvec_alloc_counts;
+      total_sizes += rtvec_alloc_sizes;
+    }
+  fprintf (stderr, "---------------------------------------\n");
+  fprintf (stderr, "%-20s %7d %10d\n",
+           "Total", total_counts, total_sizes);
+  fprintf (stderr, "---------------------------------------\n");
+#endif  
+}
 
 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
 void