Features for dg-add-options#

The supported values of feature for directive dg-add-options are:

arm_fp: __ARM_FP definition. Only ARM targets support this feature, and only then in certain modes; see the arm_fp_ok.
arm_fp_dp: __ARM_FP definition with double-precision support. Only ARM targets support this feature, and only then in certain modes; see the arm_fp_dp_ok.
arm_neon: NEON support. Only ARM targets support this feature, and only then in certain modes; see the arm_neon_ok.
arm_fp16: VFP half-precision floating point support. This does not select the FP16 format; for that, use arm_fp16_ieee or arm_fp16_alternative instead. This feature is only supported by ARM targets and then only in certain modes; see the arm_fp16_ok.

arm_fp16_ieee: ARM IEEE 754-2008 format VFP half-precision floating point support. This feature is only supported by ARM targets and then only in certain modes; see the arm_fp16_ok.

arm_fp16_alternative: ARM Alternative format VFP half-precision floating point support. This feature is only supported by ARM targets and then only in certain modes; see the arm_fp16_ok.
arm_neon_fp16: NEON and half-precision floating point support. Only ARM targets support this feature, and only then in certain modes; see the arm_neon_fp16_ok.
arm_vfp3: arm vfp3 floating point support; see the arm_vfp3_ok.
arm_arch_v8a_hard: Add options for ARMv8-A and the hard-float variant of the AAPCS, if this is supported by the compiler; see the arm_arch_v8a_hard_ok effective target keyword.
arm_v8_1a_neon: Add options for ARMv8.1-A with Adv.SIMD support, if this is supported by the target; see the arm_v8_1a_neon_ok effective target keyword.
arm_v8_2a_fp16_scalar: Add options for ARMv8.2-A with scalar FP16 support, if this is supported by the target; see the arm_v8_2a_fp16_scalar_ok effective target keyword.
arm_v8_2a_fp16_neon: Add options for ARMv8.2-A with Adv.SIMD FP16 support, if this is supported by the target; see the arm_v8_2a_fp16_neon_ok effective target keyword.
arm_v8_2a_dotprod_neon: Add options for ARMv8.2-A with Adv.SIMD Dot Product support, if this is supported by the target; see the arm_v8_2a_dotprod_neon_ok effective target keyword.
arm_fp16fml_neon: Add options to enable generation of the VFMAL and VFMSL instructions, if this is supported by the target; see the arm_fp16fml_neon_ok effective target keyword.
arm_dsp: Add options for ARM DSP intrinsics support, if this is supported by the target; see the arm_dsp_ok.
bind_pic_locally: Add the target-specific flags needed to enable functions to bind locally when using pic/PIC passes in the testsuite.
floatn: Add the target-specific flags needed to use the _Floatn type.
floatnx: Add the target-specific flags needed to use the _Floatnx type.
ieee: Add the target-specific flags needed to enable full IEEE compliance mode.
mips16_attribute: mips16 function attributes. Only MIPS targets support this feature, and only then in certain modes.

stack_size: Add the flags needed to define macro STACK_SIZE and set it to the stack size limit associated with the stack_size_et.
sqrt_insn: Add the target-specific flags needed to enable hardware square root instructions, if any.
tls: Add the target-specific flags needed to use thread-local storage.