[testsuite][ARM target attributes] Fix effective_target tests.

[testsuite][ARM target attributes] Fix effective_target tests.

2015-12-08  Christophe Lyon  <christophe.lyon@linaro.org>

	* lib/target-supports.exp
	(check_effective_target_arm_vfp_ok_nocache): New.
	(check_effective_target_arm_vfp_ok): Call the new
	check_effective_target_arm_vfp_ok_nocache function.
	(check_effective_target_arm_fp_ok_nocache): New.
	(check_effective_target_arm_fp_ok): New.
	(add_options_for_arm_fp): New.
	(check_effective_target_arm_crypto_ok_nocache): Require
	target_arm_v8_neon_ok instead of arm32.
	(check_effective_target_arm_crypto_pragma_ok_nocache): New.
	(check_effective_target_arm_crypto_pragma_ok): New.
	(add_options_for_arm_vfp): New.
	* gcc.target/arm/attr-crypto.c: Use arm_crypto_pragma_ok effective
	target. Do not force -mfloat-abi=softfp, use arm_vfp effective
	target instead.
	* gcc.target/arm/attr-neon-builtin-fail.c: Do not force
	-mfloat-abi=softfp, use arm_fp effective target instead.
	* gcc.target/arm/attr-neon-fp16.c: Likewise. Remove arm_neon_ok
	dependency.
	* gcc.target/arm/attr-neon2.c: Do not force -mfloat-abi=softfp,
	use arm_vfp effective target instead.
	* gcc.target/arm/attr-neon3.c: Likewise.

From-SVN: r231403