gcc.dg/guality/restrict.c: Add `used' attribute to all variables.

From-SVN: r214219

gcc/testsuite/ChangeLog

+2014-08-20  Mark Wielaard  <mjw@redhat.com>
+
+	* gcc.dg/guality/restrict.c: Add `used' attribute to all variables.
+
 2014-08-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* lib/gcc-defs.exp (${tool}_check_unsupported_p):

gcc/testsuite/gcc.dg/guality/restrict.c

@@ -2,16 +2,16 @@
 /* { dg-do run } */
 /* { dg-options "-std=c99 -gdwarf-3" } */
 
-int *ip;
-const int *cip;
-int * restrict irp;
-int * const icp;
-const int * restrict cirp;
-int * const restrict icrp;
-const int * const restrict cicrp;
-
-int * const volatile restrict cvirp;
-const volatile int * restrict pcvir;
+int *ip __attribute__((used));
+const int *cip __attribute__((used));
+int * restrict irp __attribute__((used));
+int * const icp __attribute__((used));
+const int * restrict cirp __attribute__((used));
+int * const restrict icrp __attribute__((used));
+const int * const restrict cicrp __attribute__((used));
+
+int * const volatile restrict cvirp __attribute__((used));
+const volatile int * restrict pcvir __attribute__((used));
 
 static __attribute__((noclone, noinline)) void *
 cpy (void * restrict s1, const void * restrict s2, unsigned int n)