aarch64: add svcvt* FP8 intrinsics

This patch adds the following intrinsics:
- svcvt1_bf16[_mf8]_fpm
- svcvt1_f16[_mf8]_fpm
- svcvt2_bf16[_mf8]_fpm
- svcvt2_f16[_mf8]_fpm
- svcvtlt1_bf16[_mf8]_fpm
- svcvtlt1_f16[_mf8]_fpm
- svcvtlt2_bf16[_mf8]_fpm
- svcvtlt2_f16[_mf8]_fpm
- svcvtn_mf8[_f16_x2]_fpm (unpredicated)
- svcvtnb_mf8[_f32_x2]_fpm
- svcvtnt_mf8[_f32_x2]_fpm

The underlying instructions are only available when SVE2 is enabled and the PE
is not in streaming SVE mode. They are also available when SME2 is enabled and
the PE is in streaming SVE mode.

gcc/
	* config/aarch64/aarch64-sve-builtins-shapes.cc
	(parse_signature): Add an fpm_t (uint64_t) argument to functions that
	set the fpm register.
	(unary_convertxn_narrowt_def): New class.
	(unary_convertxn_narrowt): New shape.
	(unary_convertxn_narrow_def): New class.
	(unary_convertxn_narrow): New shape.
	* config/aarch64/aarch64-sve-builtins-shapes.h
	(unary_convertxn_narrowt): Declare.
	(unary_convertxn_narrow): Likewise.
	* config/aarch64/aarch64-sve-builtins-sve2.cc
	(svcvt_fp8_impl): New class.
	(svcvtn_impl): Handle fp8 cases.
	(svcvt1, svcvt2, svcvtlt1, svcvtlt2): Add new FUNCTION.
	(svcvtnb): Likewise.
	* config/aarch64/aarch64-sve-builtins-sve2.def
	(svcvt1, svcvt2, svcvtlt1, svcvtlt2): Add new DEF_SVE_FUNCTION_GS_FPM.
	(svcvtn): Likewise.
	(svcvtnb, svcvtnt): Likewise.
	* config/aarch64/aarch64-sve-builtins-sve2.h
	(svcvt1, svcvt2, svcvtlt1, svcvtlt2, svcvtnb, svcvtnt): Declare.
	* config/aarch64/aarch64-sve-builtins.cc
	(TYPES_cvt_mf8, TYPES_cvtn_mf8, TYPES_cvtnx_mf8): Add new types arrays.
	(function_builder::get_name): Append _fpm to functions that set fpmr.
	(function_resolver::check_gp_argument): Deal with the fpm_t argument.
	(function_expander::expand): Set the fpm register before
	calling the insn if the function warrants it.
	* config/aarch64/aarch64-sve2.md (@aarch64_sve2_fp8_cvt): Add new.
	(@aarch64_sve2_fp8_cvtn): Likewise.
	(@aarch64_sve2_fp8_cvtnb): Likewise.
	(@aarch64_sve_cvtnt): Likewise.
	* config/aarch64/aarch64.h (TARGET_SSVE_FP8): Add new.
	* config/aarch64/iterators.md
	(VNx8SF_ONLY, SVE_FULL_HFx2): New mode iterators.
	(UNSPEC_F1CVT, UNSPEC_F1CVTLT, UNSPEC_F2CVT, UNSPEC_F2CVTLT): Add new.
	(UNSPEC_FCVTNB, UNSPEC_FCVTNT): Likewise.
	(UNSPEC_FP8FCVTN): Likewise.
	(FP8CVT_UNS, fp8_cvt_uns_op): Likewise.

gcc/testsuite/

	* gcc.target/aarch64/sve/acle/asm/test_sve_acle.h
	(TEST_DUAL_Z): Add fpm0 argument
	* gcc.target/aarch64/sve/acle/general-c/unary_convertxn_narrow_1.c:
	Add new tests.
	* gcc.target/aarch64/sve/acle/general-c/unary_convertxn_narrowt_1.c:
	Likewise.
	* gcc.target/aarch64/sve2/acle/asm/cvt_mf8.c: Likewise.
	* gcc.target/aarch64/sve2/acle/asm/cvtlt_mf8.c: Likewise.
	* gcc.target/aarch64/sve2/acle/asm/cvtn_mf8.c: Likewise.
	* gcc.target/aarch64/sve2/acle/asm/cvtnb_mf8.c: Likewise.
	* gcc.target/aarch64/sve2/acle/asm/cvtnt_mf8.c: Likewise.
	* lib/target-supports.exp: Add aarch64_asm_fp8_ok check.

0 files changed, 0 insertions, 0 deletions