aarch64: Add support for fp8 convert and scale

The AArch64 FEAT_FP8 extension introduces instructions for conversion
and scaling.

This patch introduces the following intrinsics:
1. vcvt{1|2}_{bf16|high_bf16|low_bf16}_mf8_fpm.
2. vcvt{q}_mf8_f16_fpm.
3. vcvt_{high}_mf8_f32_fpm.
4. vscale{q}_{f16|f32|f64}.

We introduced two aarch64_builtin_signatures enum variants, unary and
ternary, and added support for these variants in the functions
aarch64_fntype and aarch64_expand_pragma_builtin.

We added new simd_types for integers (s32, s32q, and s64q) and for
floating points (f8 and f8q).

Because we added support for fp8 intrinsics here, we modified the check
in acle/fp8.c that was checking that __ARM_FEATURE_FP8 macro is not
defined.

gcc/ChangeLog:

	* config/aarch64/aarch64-builtins.cc
	(ENTRY): Modified to support uses_fpmr flag.
	(enum class): New variants to support new signatures.
	(struct aarch64_pragma_builtins_data): Add a new boolean field,
	uses_fpmr.
	(aarch64_get_number_of_args): Helper function used in
	aarch64_fntype and aarch64_expand_pragma_builtin.
	(aarch64_fntype): Handle new signatures.
	(aarch64_expand_pragma_builtin): Handle new signatures.
	* config/aarch64/aarch64-c.cc
	(aarch64_update_cpp_builtins): New flag for FP8.
	* config/aarch64/aarch64-simd-pragma-builtins.def
	(ENTRY_BINARY): Macro to declare binary intrinsics.
	(ENTRY_TERNARY): Macro to declare ternary intrinsics.
	(ENTRY_UNARY): Macro to declare unary intrinsics.
	(ENTRY_VHSDF): Macro to declare binary intrinsics.
	(ENTRY_VHSDF_VHSDI): Macro to declare binary intrinsics.
	(REQUIRED_EXTENSIONS): Define to declare functions behind
	command line flags.
	* config/aarch64/aarch64-simd.md
	(@aarch64_<fpm_unary_bf_uns_op><V8BF_ONLY:mode><VB:mode>): Unary
	pattern.
	(@aarch64_<fpm_unary_hf_uns_op><V8HF_ONLY:mode><VB:mode>): Unary
	pattern.
	(@aarch64_lower_<fpm_unary_bf_uns_op><V8BF_ONLY:mode><V16QI_ONLY:mode>):
	Unary pattern.
	(@aarch64_lower_<fpm_unary_hf_uns_op><V8HF_ONLY:mode><V16QI_ONLY:mode>):
	Unary pattern.
	(@aarch64<fpm_uns_op><VB:mode><VCVTFPM:mode><VH_SF:mode>):
	Binary pattern.
	(@aarch64_<fpm_uns_op><V16QI_ONLY:mode><V8QI_ONLY:mode><V4SF_ONLY:mode><V4SF_ONLY:mode>):
	Unary pattern.
	(@aarch64_<fpm_uns_op><VHSDF:mode><VHSDI:mode>): Binary pattern.
	* config/aarch64/iterators.md: New attributes and iterators.

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/acle/fp8.c: Remove check that fp8 feature
	macro doesn't exist.
	* gcc.target/aarch64/simd/scale_fpm.c: New test.
	* gcc.target/aarch64/simd/vcvt_fpm.c: New test.

0 files changed, 0 insertions, 0 deletions