New test.

From-SVN: r55599

gcc/testsuite/ChangeLog

+2002-07-20  Alan Modra  <amodra@bigpond.net.au>
+
+	* gcc.c-torture/execute/loop-13.c: New test.
+
 2002-07-19  Neil Booth  <neil@daikokuya.co.uk>
 
 	* gcc.dg/cpp/expr.c: New tests.

gcc/testsuite/gcc.c-torture/execute/loop-13.c

+/* PR opt/7130 */
+#define TYPE long
+
+void
+scale (TYPE *alpha, TYPE *x, int n)
+{
+  int i, ix;
+
+  if (*alpha != 1)
+    for (i = 0, ix = 0; i < n; i++, ix += 2)
+      {
+	TYPE tmpr, tmpi;
+	tmpr = *alpha * x[ix];
+	tmpi = *alpha * x[ix + 1];
+	x[ix] = tmpr;
+	x[ix + 1] = tmpi;
+      }
+}
+
+int
+main (void)
+{
+  int i;
+  TYPE x[10];
+  TYPE alpha = 2;
+
+  for (i = 0; i < 10; i++)
+    x[i] = i;
+
+  scale (&alpha, x, 5);
+
+  if (x[9] != 18)
+    abort ();
+
+  return 0;
+}