7.2.4 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 effective target keyword.
arm_neon
- NEON support. Only ARM targets support this feature, and only then
in certain modes; see the arm_neon_ok effective target keyword.
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 effective target keyword.
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 effective target keyword.
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 effective target keyword.
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 effective target keyword.
arm_vfp3
- arm vfp3 floating point support; see
the arm_vfp3_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.
bind_pic_locally
- Add the target-specific flags needed to enable functions to bind
locally when using pic/PIC passes in the testsuite.
c99_runtime
- Add the target-specific flags needed to access the C99 runtime.
float
n- Add the target-specific flags needed to use the
_Float
n type.
float
nx
- Add the target-specific flags needed to use the
_Float
nx
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
effective target.
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.