re PR lto/45037 (lto1 ICEs when linking cns_solve)

2010-07-23  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/45037
	* tree-ssa-loop-ivopts.c (copy_ref_info): Handle NULL base.

From-SVN: r162451

gcc/ChangeLog

+2010-07-23  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/45037
+	* tree-ssa-loop-ivopts.c (copy_ref_info): Handle NULL base.
+
 2010-07-23  Jie Zhang  <jie@codesourcery.com>
 
 	* doc/extend.texi: Remove IP2K from the description of naked

gcc/tree-ssa-loop-ivopts.c

@@ -5604,11 +5604,13 @@ copy_ref_info (tree new_ref, tree old_ref)
       && !SSA_NAME_PTR_INFO (new_ptr_base))
     {
       tree base = get_base_address (old_ref);
-      if ((INDIRECT_REF_P (base)
-	   || TREE_CODE (base) == MEM_REF)
-	  && TREE_CODE (TREE_OPERAND (base, 0)) == SSA_NAME)
+      if (!base)
+	;
+      else if ((INDIRECT_REF_P (base)
+		|| TREE_CODE (base) == MEM_REF)
+	       && TREE_CODE (TREE_OPERAND (base, 0)) == SSA_NAME)
 	duplicate_ssa_name_ptr_info
-	    (new_ptr_base, SSA_NAME_PTR_INFO (TREE_OPERAND (base, 0)));
+	  (new_ptr_base, SSA_NAME_PTR_INFO (TREE_OPERAND (base, 0)));
       else if (TREE_CODE (base) == VAR_DECL
 	       || TREE_CODE (base) == PARM_DECL
 	       || TREE_CODE (base) == RESULT_DECL)