re PR target/81305 ([avr] avrtiny uses LDS for SREG in ISR routines which is out of range of LDS.)

	PR target/81305
	* gcc.target/avr/isr-test.h: Fix warnings.

From-SVN: r250029

gcc/testsuite/ChangeLog

+2017-07-06  Georg-Johann Lay  <avr@gjlay.de>
+
+	PR target/81305
+	* gcc.target/avr/isr-test.h: Fix warnings.
+
 2017-07-06  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
 	* lib/target-supports.exp: Generate

gcc/testsuite/gcc.target/avr/isr-test.h

@@ -40,14 +40,14 @@ typedef struct
 
 regs_t reginfo1, reginfo2;
 
-__attribute__((noinline))
+__attribute__((noinline,unused))
 static void clear_reginfo (void)
 {
   memset (reginfo1.sfrs, 0, sizeof (reginfo1.sfrs));
   memset (reginfo2.sfrs, 0, sizeof (reginfo2.sfrs));
 }
 
-__attribute__((noinline))
+__attribute__((noinline,unused))
 static void compare_reginfo (unsigned long gpr_ignore)
 {
   signed char regno;
@@ -68,6 +68,7 @@ static void compare_reginfo (unsigned long gpr_ignore)
       if (*preg1 != *preg2)
         {
           static signed char volatile failed_regno;
+          (void) failed_regno;
           failed_regno = regno;
           __builtin_abort();
         }