Add testcase for PR47593

2011-07-26  Sebastian Pop  <sebastian.pop@amd.com>

	PR middle-end/47653
	* gcc.dg/graphite/run-id-pr47593.c: New.

From-SVN: r176803

gcc/testsuite/ChangeLog

 2011-07-26  Sebastian Pop  <sebastian.pop@amd.com>
 
 	PR middle-end/47653
+	* gcc.dg/graphite/run-id-pr47593.c: New.
+
+2011-07-26  Sebastian Pop  <sebastian.pop@amd.com>
+
+	PR middle-end/47653
 	* gcc.dg/graphite/run-id-pr47653.c: New.
 	* gcc.dg/graphite/interchange-3.c: Do not use unsigned types for
 	induction variables.

gcc/testsuite/gcc.dg/graphite/run-id-pr47593.c

+/* { dg-options "-O2 -fgraphite-identity -m32" } */
+
+struct Foo {
+  int **p;
+  int **q;
+};
+
+int __attribute__((noinline))
+bar (void)
+{
+  struct Foo f;
+  int j, i = 1;
+  char *p;
+  int *x = &i;
+  int *y = &j;
+  f.p = &y;
+  f.q = &x;
+  p = (char *)&f;
+  for (j = 0; j < sizeof (int *); ++j)
+    p++;
+  return ***(int ***)p;
+}
+extern void abort (void);
+int main()
+{
+  if (bar () != 1)
+    abort ();
+  return 0;
+}