20080522-1.c: New testcase.

2008-05-22  Richard Guenther  <rguenther@suse.de>

	* gcc.c-torture/execute/20080522-1.c: New testcase.

From-SVN: r135768

gcc/testsuite/ChangeLog

 2008-05-22  Richard Guenther  <rguenther@suse.de>
 
+	* gcc.c-torture/execute/20080522-1.c: New testcase.
+
+2008-05-22  Richard Guenther  <rguenther@suse.de>
+
 	* gcc.dg/tree-ssa/alias-18.c: New testcase.
 
 2008-05-22  Arnaud Charlet  <charlet@adacore.com>

gcc/testsuite/gcc.c-torture/execute/20080522-1.c

+/* This testcase is to make sure we have i in referenced vars and that we
+   properly compute aliasing for the loads and stores.  */
+
+extern void abort (void);
+
+static int i;
+static int *p = &i;
+
+int __attribute__((noinline))
+foo(int *q)
+{
+  *p = 1;
+  *q = 2;
+  return *p;
+}
+
+int __attribute__((noinline))
+bar(int *q)
+{
+  *q = 2;
+  *p = 1;
+  return *q;
+}
+
+int main()
+{
+  int j = 0;
+
+  if (foo(&i) != 2)
+    abort ();
+  if (bar(&i) != 1)
+    abort ();
+  if (foo(&j) != 1)
+    abort ();
+  if (j != 2)
+    abort ();
+  if (bar(&j) != 2)
+    abort ();
+  if (j != 2)
+    abort ();
+
+  return 0;
+}