re PR tree-optimization/55920 (ICE in expand_debug_locations, at cfgexpand.c:3753)

2013-01-15  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/55920
	* tree-sra.c (analyze_access_subtree): Do not mark non-removable
	accesses as grp_to_be_debug_replaced.

From-SVN: r195210

gcc/ChangeLog

+2013-01-15  Martin Jambor  <mjambor@suse.cz>
+
+	PR tree-optimization/55920
+	* tree-sra.c (analyze_access_subtree): Do not mark non-removable
+	accesses as grp_to_be_debug_replaced.
+
 2013-01-15  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/55920

gcc/tree-sra.c

@@ -2199,7 +2199,9 @@ analyze_access_subtree (struct access *root, struct access *parent,
     {
       if (allow_replacements
 	  && scalar && !root->first_child
-	  && (root->grp_scalar_write || root->grp_assignment_write))
+	  && (root->grp_scalar_write || root->grp_assignment_write)
+	  && !bitmap_bit_p (cannot_scalarize_away_bitmap,
+			    DECL_UID (root->base)))
 	{
 	  gcc_checking_assert (!root->grp_scalar_read
 			       && !root->grp_assignment_read);