From: Jan Hubicka <jh@suse.cz>
Date: Sun, 1 May 2011 19:11:07 +0000 (+0200)
Subject: ipa-inline.c (caller_growth_limits): Fix thinko when
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=09dfe187f0fbc756826672f79495bd3d5c142f78;p=gcc.git

ipa-inline.c (caller_growth_limits): Fix thinko when

	* ipa-inline.c (caller_growth_limits): Fix thinko when
	* ipa-inline.c (caller_growth_limits): Fix thinko when
	looking for largest stack frame.
	* ipa-inline.h (dump_inline_summary): Declare.
	* ipa-inline-analysis.c (dump_inline_edge_summary): Dump info
	on stack usage.
	(dump_inline_summary): Export.
	(debug_inline_summary): Declare as DEBUG_FUNCTION.

From-SVN: r173234
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 92ea25f757c..ffdef91664d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2011-05-01  Jan Hubicka  <jh@suse.cz>
+
+	* ipa-inline.c (caller_growth_limits): Fix thinko when
+	looking for largest stack frame.
+	* ipa-inline.h (dump_inline_summary): Declare.
+	* ipa-inline-analysis.c (dump_inline_edge_summary): Dump info
+	on stack usage.
+	(dump_inline_summary): Export.
+	(debug_inline_summary): Declare as DEBUG_FUNCTION.
+
 2011-05-01  Anatoly Sokolov  <aesok@post.ru>
 
 	* reginfo.c (memory_move_cost): Change rclass argument type form
diff --git a/gcc/ipa-inline-analysis.c b/gcc/ipa-inline-analysis.c
index 2a0a2583aee..50ae74da75e 100644
--- a/gcc/ipa-inline-analysis.c
+++ b/gcc/ipa-inline-analysis.c
@@ -735,7 +735,7 @@ dump_inline_edge_summary (FILE * f, int indent, struct cgraph_node *node,
   for (edge = node->callees; edge; edge = edge->next_callee)
     {
       struct inline_edge_summary *es = inline_edge_summary (edge);
-      fprintf (f, "%*s%s/%i %s\n%*s  loop depth:%2i freq:%4i size:%2i time: %2i",
+      fprintf (f, "%*s%s/%i %s\n%*s  loop depth:%2i freq:%4i size:%2i time: %2i callee size:%2i stack:%2i",
 	       indent, "", cgraph_node_name (edge->callee),
 	       edge->callee->uid, 
 	       !edge->inline_failed ? "inlined"
@@ -744,7 +744,9 @@ dump_inline_edge_summary (FILE * f, int indent, struct cgraph_node *node,
 	       es->loop_depth,	
                edge->frequency,
 	       es->call_stmt_size,
-	       es->call_stmt_time);
+	       es->call_stmt_time,
+	       (int)inline_summary (edge->callee)->size,
+	       (int)inline_summary (edge->callee)->estimated_stack_size);
       if (es->predicate)
 	{
 	  fprintf (f, " predicate: ");
@@ -753,7 +755,14 @@ dump_inline_edge_summary (FILE * f, int indent, struct cgraph_node *node,
       else
 	  fprintf (f, "\n");
       if (!edge->inline_failed)
-	dump_inline_edge_summary (f, indent+2, edge->callee, info);
+	{
+          fprintf (f, "%*sStack frame offset %i, callee self size %i, callee size %i\n",
+		   indent+2, "",
+		   (int)inline_summary (edge->callee)->stack_frame_offset,
+		   (int)inline_summary (edge->callee)->estimated_self_stack_size,
+		   (int)inline_summary (edge->callee)->estimated_stack_size);
+	  dump_inline_edge_summary (f, indent+2, edge->callee, info);
+	}
     }
   for (edge = node->indirect_calls; edge; edge = edge->next_callee)
     {
@@ -775,7 +784,7 @@ dump_inline_edge_summary (FILE * f, int indent, struct cgraph_node *node,
 }
 
 
-static void
+void
 dump_inline_summary (FILE * f, struct cgraph_node *node)
 {
   if (node->analyzed)
@@ -816,7 +825,7 @@ dump_inline_summary (FILE * f, struct cgraph_node *node)
     }
 }
 
-void
+DEBUG_FUNCTION void
 debug_inline_summary (struct cgraph_node *node)
 {
   dump_inline_summary (stderr, node);
diff --git a/gcc/ipa-inline.c b/gcc/ipa-inline.c
index 4665c82ac88..437f6b2c716 100644
--- a/gcc/ipa-inline.c
+++ b/gcc/ipa-inline.c
@@ -151,7 +151,7 @@ caller_growth_limits (struct cgraph_edge *e)
      we immediately inline to.  This is the most relaxed
      interpretation of the rule "do not grow large functions
      too much in order to prevent compiler from exploding".  */
-  do
+  while (true)
     {
       info = inline_summary (to);
       if (limit < info->self_size)
@@ -160,8 +160,9 @@ caller_growth_limits (struct cgraph_edge *e)
 	stack_size_limit = info->estimated_self_stack_size;
       if (to->global.inlined_to)
         to = to->callers->caller;
+      else
+	break;
     }
-  while (to->global.inlined_to);
 
   what_info = inline_summary (what);
 
@@ -181,12 +182,15 @@ caller_growth_limits (struct cgraph_edge *e)
       return false;
     }
 
+  if (!what_info->estimated_stack_size)
+    return true;
+
   /* FIXME: Stack size limit often prevents inlining in Fortran programs
      due to large i/o datastructures used by the Fortran front-end.
      We ought to ignore this limit when we know that the edge is executed
      on every invocation of the caller (i.e. its call statement dominates
      exit block).  We do not track this information, yet.  */
-  stack_size_limit += (stack_size_limit
+  stack_size_limit += ((gcov_type)stack_size_limit
 		       * PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) / 100);
 
   inlined_stack = (outer_info->stack_frame_offset
diff --git a/gcc/ipa-inline.h b/gcc/ipa-inline.h
index 480a9fadf29..11dd15e42b9 100644
--- a/gcc/ipa-inline.h
+++ b/gcc/ipa-inline.h
@@ -141,6 +141,7 @@ extern VEC(edge_growth_cache_entry,heap) *edge_growth_cache;
 /* In ipa-inline-analysis.c  */
 void debug_inline_summary (struct cgraph_node *);
 void dump_inline_summaries (FILE *f);
+void dump_inline_summary (FILE * f, struct cgraph_node *node);
 void inline_generate_summary (void);
 void inline_read_summary (void);
 void inline_write_summary (cgraph_node_set, varpool_node_set);