sdiv_costs_1.c: Use dg-add-options.

2017-06-15  Tamar Christina  <tamar.christina@arm.com>

	* gcc.target/arm/sdiv_costs_1.c:
	Use dg-add-options.

From-SVN: r249214

gcc/testsuite/ChangeLog

+2017-06-15  Tamar Christina  <tamar.christina@arm.com>
+
+	* gcc.target/arm/sdiv_costs_1.c:
+	Use dg-add-options.
+
 2017-06-14  Maciej W. Rozycki  <macro@imgtec.com>
 
 	* gcc.target/mips/data-sym-jump.c: Adjust for whitespace changes.

gcc/testsuite/gcc.target/arm/sdiv_costs_1.c

 /* { dg-do compile } */
-/* { dg-options "-O3 -march=armv8-a" } */
+/* { dg-options "-O3" } */
 /* { dg-require-effective-target arm_arch_v8a_ok } */
+/* { dg-add-options arm_arch_v8a } */
 
 /* Both sdiv and udiv can be used here, so prefer udiv.  */
 int f1 (unsigned char *p)