[Testsuite] Use correct effective-target settings for ARM fp16-aapcs tests.

 
2016-09-30  Matthew Wawhab  <matthew.wahab@arm.com>

	* gcc.target/arm/fp16-aapcs-3.c: Replace arm_fp16_ok with
	arm_fp16_alternative_ok as the required effective target.
	* gcc.target/arm/fp16-aapcs-4.c: Likewise.  Also add
	-mfp16-format=alternative to the dg-options directive and remove
	the dg-add-options directive.

From-SVN: r240655

gcc/testsuite/ChangeLog

+2016-09-30  Matthew Wawhab  <matthew.wahab@arm.com>
+
+	* gcc.target/arm/fp16-aapcs-3.c: Replace arm_fp16_ok with
+	arm_fp16_alternative_ok as the required effective target.
+	* gcc.target/arm/fp16-aapcs-4.c: Likewise.  Also add
+	-mfp16-format=alternative to the dg-options directive and remove
+	the dg-add-options directive.
+
 2016-09-30  Fritz Reese  <fritzoreese@gmail.com>
 
 	PR fortran/77764

gcc/testsuite/gcc.target/arm/fp16-aapcs-3.c

 /* { dg-do compile }  */
 /* { dg-require-effective-target arm_hard_vfp_ok }  */
-/* { dg-require-effective-target arm_fp16_ok } */
+/* { dg-require-effective-target arm_fp16_alternative_ok } */
 /* { dg-options "-O2" }  */
 /* { dg-add-options arm_fp16_alternative } */
 

gcc/testsuite/gcc.target/arm/fp16-aapcs-4.c

 /* { dg-do compile }  */
-/* { dg-require-effective-target arm_fp16_ok } */
-/* { dg-options "-mfloat-abi=softfp -O2" }  */
-/* { dg-add-options arm_fp16_alternative } */
+/* { dg-require-effective-target arm_fp16_alternative_ok } */
+/* { dg-options "-mfloat-abi=softfp -O2 -mfp16-format=alternative" }  */
 /* { dg-skip-if "incompatible float-abi" { arm*-*-* } { "-mfloat-abi=hard" } } */
 
 /* Test __fp16 arguments and return value in registers (softfp).  */