tree-ssa-ter.c (find_replaceable_in_bb): Allow replacement over call for single operand expression.

	* tree-ssa-ter.c (find_replaceable_in_bb): Allow replacement over
	call for single operand expression.

From-SVN: r165733

gcc/ChangeLog

+2010-10-20  Pat Haugen  <pthaugen@us.ibm.com>
+
+	* tree-ssa-ter.c (find_replaceable_in_bb): Allow replacement over
+	call for single operand expression.
+
 2010-10-20  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* tree-optimize.c (execute_fixup_cfg): Purge dead abnormal call edges

gcc/tree-ssa-ter.c

@@ -644,8 +644,10 @@ find_replaceable_in_bb (temp_expr_table_p tab, basic_block bb)
 		 def variable has the same root variable as something in the
 		 substitution list, or the def and use span a call such that
 		 we'll expand lifetimes across a call.  */
-	      if (gimple_has_volatile_ops (stmt) || same_root_var ||
-		  tab->call_cnt[ver] != cur_call_cnt)
+	      if (gimple_has_volatile_ops (stmt) || same_root_var
+		  || (tab->call_cnt[ver] != cur_call_cnt
+		      && SINGLE_SSA_USE_OPERAND (SSA_NAME_DEF_STMT (use), SSA_OP_USE)
+			 == NULL_USE_OPERAND_P))
 		finished_with_expr (tab, ver, true);
 	      else
 		mark_replaceable (tab, use, stmt_replaceable);