[ARM] Fix availability of FP16-FP64 conversion instructions

2019-03-11  Christophe Lyon  <christophe.lyon@linaro.org>

	* gcc.target/arm/f16_f64_conv_no_dp.c: Add arm_fp16_ok effective
	target.

From-SVN: r269596

gcc/testsuite/ChangeLog

+2019-03-11  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	* gcc.target/arm/f16_f64_conv_no_dp.c: Add arm_fp16_ok effective
+	target.
+
 2019-03-11  Martin Liska  <mliska@suse.cz>
 
 	* g++.dg/conversion/simd3.C (foo): Wrap option names

gcc/testsuite/gcc.target/arm/f16_f64_conv_no_dp.c

 /* { dg-do compile } */
+/* { dg-require-effective-target arm_fp16_ok } */
 /* { dg-skip-if "do not override fpu" { *-*-* } { "-mfpu=*" } { "-mfpu=fpv5-sp-d16" } } */
 /* { dg-skip-if "do not disable fpu" { *-*-* } { "-mfloat-abi=soft" } { * } } */
 /* { dg-skip-if "do not override fp16-format" { *-*-* } { "-mfp16-format=*" } { "-mfp16-format=ieee" } } */