re PR middle-end/51071 (ICE in gimple_has_side_effects, at gimple.c:2513)

2012-05-22  Richard Guenther  <rguenther@suse.de>

	PR middle-end/51071
	* gcc.dg/torture/pr51071-2.c: New testcase.

From-SVN: r187768

gcc/testsuite/ChangeLog

+2012-05-22  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/51071
+	* gcc.dg/torture/pr51071-2.c: New testcase.
+
 2012-05-22  Paolo Bonzini  <bonzini@gnu.org>
 
 	PR tree-optimization/53336

gcc/testsuite/gcc.dg/torture/pr51071-2.c

+/* { dg-do compile } */
+/* { dg-options "-fno-delete-null-pointer-checks" } */
+
+extern struct module __this_module;
+static inline void
+trace_module_get  (struct module *mod, unsigned long ip) { }
+struct module;
+static inline __attribute__((no_instrument_function))
+int try_module_get(struct module *module)
+{
+  int ret = 1;
+  if (module)
+    {
+      if (module_is_live(module))
+	{
+	  __label__ __here;
+	  asm("");
+	  __here:
+	  trace_module_get(module, (unsigned long)&&__here);
+	}
+      else
+	ret = 0;
+    }
+  return ret;
+}
+struct net_device;
+struct net_device_ops {
+    int (*ndo_open)(struct net_device *dev);
+};
+int t3e3_open(struct net_device *dev)
+{
+  int ret = hdlc_open(dev);
+  if (ret)
+    return ret;
+  try_module_get((&__this_module));
+  return 0;
+}
+const struct net_device_ops t3e3_ops = { .ndo_open = t3e3_open };