native::isa< x86 > Struct Reference

Exact X86 feature requirements; construction does not add prerequisites. More...

#include <isa.h>

Public Types
using	feature_type = typename detail::feature_traits<x86>::type
	Feature enum accepted by this ISA family.

Public Member Functions
constexpr	isa () noexcept=default
	Construct the empty requirement set.
constexpr	isa (feature_type f) noexcept
	Require exactly one feature of this family, without prerequisite closure.
constexpr bool	get (feature_type f) const noexcept
	Read one feature; out-of-range values are absent.
constexpr void	set (feature_type f, bool value) noexcept
constexpr bool	has (feature_type f) const noexcept
	True when the feature is present.
constexpr bool	has (isa other) const noexcept
	True when every bit in a same-family requirement is present.
constexpr bool	valid () const noexcept
	True when no invalid marker or unregistered padding bit is set.
constexpr bool	operator== (isa const &) const =default
	Compare every stored bit, including invalid requirements.

Public Attributes
std::array< std::uint64_t,(feature_count+1+63)/64 >	flags {}
	Public structural bits; invalid enum values and padding fail validation.
bool	mmx
	Read or update the mmx feature bit through flags.
bool	sse
	Read or update the sse feature bit through flags.
bool	sse2
	Read or update the sse2 feature bit through flags.
bool	sse3
	Read or update the sse3 feature bit through flags.
bool	ssse3
	Read or update the ssse3 feature bit through flags.
bool	sse41
	Read or update the sse41 feature bit through flags.
bool	sse42
	Read or update the sse42 feature bit through flags.
bool	popcnt
	Read or update the popcnt feature bit through flags.
bool	avx
	Read or update the avx feature bit through flags.
bool	avx2
	Read or update the avx2 feature bit through flags.
bool	fma
	Read or update the fma feature bit through flags.
bool	f16c
	Read or update the f16c feature bit through flags.
bool	bmi1
	Read or update the bmi1 feature bit through flags.
bool	bmi2
	Read or update the bmi2 feature bit through flags.
bool	avx512f
	Read or update the avx512f feature bit through flags.
bool	avx512dq
	Read or update the avx512dq feature bit through flags.
bool	avx512bw
	Read or update the avx512bw feature bit through flags.
bool	avx512vl
	Read or update the avx512vl feature bit through flags.
bool	avx512bf16
	Read or update the avx512bf16 feature bit through flags.
bool	avx512fp16
	Read or update the avx512fp16 feature bit through flags.
bool	aes
	Read or update the aes feature bit through flags.
bool	pclmul
	Read or update the pclmul feature bit through flags.
bool	cx16
	Read or update the cx16 feature bit through flags.
bool	avx512cd
	Read or update the avx512cd feature bit through flags.
bool	avx512ifma
	Read or update the avx512ifma feature bit through flags.
bool	lzcnt
	Read or update the lzcnt feature bit through flags.
bool	movbe
	Read or update the movbe feature bit through flags.
bool	sahf
	Read or update the sahf feature bit through flags.
bool	mwaitx
	Read or update the mwaitx feature bit through flags.
bool	waitpkg
	Read or update the waitpkg feature bit through flags.
bool	crc32
	Read or update the crc32 feature bit through flags.
bool	gfni
	Read or update the gfni feature bit through flags.
bool	vpclmulqdq
	Read or update the vpclmulqdq feature bit through flags.
bool	avx512vpopcntdq
	Read or update the avx512vpopcntdq feature bit through flags.
bool	avxvnni
	Read or update the avxvnni feature bit through flags.
bool	avx512vnni
	Read or update the avx512vnni feature bit through flags.
bool	avxvnniint8
	Read or update the avxvnniint8 feature bit through flags.
bool	avxvnniint16
	Read or update the avxvnniint16 feature bit through flags.
bool	avx512bitalg
	Read or update the avx512bitalg feature bit through flags.
bool	avx512vbmi
	Read or update the avx512vbmi feature bit through flags.
bool	avx512vbmi2
	Read or update the avx512vbmi2 feature bit through flags.
bool	sha
	Read or update the sha feature bit through flags.
bool	vaes
	Read or update the vaes feature bit through flags.
bool	avxifma
	Read or update the avxifma feature bit through flags.
bool	adx
	Read or update the adx feature bit through flags.
bool	sha512
	Read or update the sha512 feature bit through flags.
bool	sm3
	Read or update the sm3 feature bit through flags.
bool	sm4
	Read or update the sm4 feature bit through flags.
bool	avxneconvert
	Read or update the avxneconvert feature bit through flags.

Static Public Attributes
static constexpr architecture	family =x86
	Architecture family, independent of the compiler target.
static constexpr auto	feature_count =detail::feature_traits<x86>::count
	Number of registered features in this family.

Detailed Description

Exact X86 feature requirements; construction does not add prerequisites.

Definition at line 107 of file isa.h.

Member Function Documentation

set()

void native::isa< x86 >::set ( feature_type f, bool value )

inlineconstexprnoexcept

Set or clear one feature. Requiring an invalid enum records an invalid set. Clearing an invalid enum does nothing; neither case indexes outside storage.

Definition at line 127 of file isa.h.

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The documentation for this struct was generated from the following file:

• src/native/isa.h