2013-01-08 Martin Jambor <mjambor@suse.cz>

	PR debug/55579
	* tree-sra.c (analyze_access_subtree): Return true also after
	potentially creating a debug-only replacement.

testsuite/
	* gcc.dg/tree-ssa/pr55579.c: New test.



git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@195015 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 17 insertions, 18 deletions

diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c
index 9c75393afae..af5a36e57ef 100644
--- a/gcc/tree-sra.c
+++ b/gcc/tree-sra.c
@@ -2197,20 +2197,25 @@ analyze_access_subtree (struct access *root, struct access *parent,
     }
   else
     {
-      if (MAY_HAVE_DEBUG_STMTS && allow_replacements
+      if (allow_replacements
 	  && scalar && !root->first_child
 	  && (root->grp_scalar_write || root->grp_assignment_write))
 	{
 	  gcc_checking_assert (!root->grp_scalar_read
 			       && !root->grp_assignment_read);
-	  root->grp_to_be_debug_replaced = 1;
-	  if (dump_file && (dump_flags & TDF_DETAILS))
+	  sth_created = true;
+	  if (MAY_HAVE_DEBUG_STMTS)
 	    {
-	      fprintf (dump_file, "Marking ");
-	      print_generic_expr (dump_file, root->base, 0);
-	      fprintf (dump_file, " offset: %u, size: %u ",
-		       (unsigned) root->offset, (unsigned) root->size);
-	      fprintf (dump_file, " to be replaced with debug statements.\n");
+	      root->grp_to_be_debug_replaced = 1;
+	      if (dump_file && (dump_flags & TDF_DETAILS))
+		{
+		  fprintf (dump_file, "Marking ");
+		  print_generic_expr (dump_file, root->base, 0);
+		  fprintf (dump_file, " offset: %u, size: %u ",
+			   (unsigned) root->offset, (unsigned) root->size);
+		  fprintf (dump_file, " to be replaced with debug "
+			   "statements.\n");
+		}
 	    }
 	}
 
@@ -2220,17 +2225,11 @@ analyze_access_subtree (struct access *root, struct access *parent,
 	root->grp_total_scalarization = 0;
     }
 
-  if (sth_created
-      && (!hole || root->grp_total_scalarization))
-    {
-      root->grp_covered = 1;
-      return true;
-    }
-  if (root->grp_write || TREE_CODE (root->base) == PARM_DECL)
+  if (!hole || root->grp_total_scalarization)
+    root->grp_covered = 1;
+  else if (root->grp_write || TREE_CODE (root->base) == PARM_DECL)
     root->grp_unscalarized_data = 1; /* not covered and written to */
-  if (sth_created)
-    return true;
-  return false;
+  return sth_created;
 }
 
 /* Analyze all access trees linked by next_grp by the means of