re PR tree-optimization/52376 (ICE in lto_input_tree_ref, at…

re PR tree-optimization/52376 (ICE in lto_input_tree_ref, at lto-streamer-in.c:266 while linking LTO-PGO libxul)

	PR tree-optimization/52376
	* ipa-split.c (split_function): Ignore CLOBBER stmts.

From-SVN: r184600

gcc/ChangeLog

+2012-02-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/52376
+	* ipa-split.c (split_function): Ignore CLOBBER stmts.
+
 2012-02-27  Stuart Henderson  <shenders@gcc.gnu.org>
 
 	* ifcvt.c (noce_get_condition): Check condition variable is not

gcc/ipa-split.c

@@ -1300,7 +1300,8 @@ split_function (struct split_point *split_point)
 			    gimple_return_set_retval (gsi_stmt (bsi), retval);
 			    break;
 			  }
-			else if (gimple_code (gsi_stmt (bsi)) == GIMPLE_ASSIGN)
+			else if (gimple_code (gsi_stmt (bsi)) == GIMPLE_ASSIGN
+				 && !gimple_clobber_p (gsi_stmt (bsi)))
 			  {
 			    gimple_assign_set_rhs1 (gsi_stmt (bsi), retval);
 			    break;