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

#include <isa.h>

Public Types
using	feature_type = typename detail::feature_traits<arm>::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	neon
	Read or update the neon feature bit through flags.
bool	neon_fp16
	Read or update the neon_fp16 feature bit through flags.
bool	neon_bf16
	Read or update the neon_bf16 feature bit through flags.
bool	pmull
	Read or update the pmull feature bit through flags.
bool	sha1
	Read or update the sha1 feature bit through flags.
bool	sha512
	Read or update the sha512 feature bit through flags.
bool	ebf16
bool	sm3
bool	sm4
	Read or update the sm4 feature bit through flags.
bool	aes
	Read or update the aes feature bit through flags.
bool	sha2
	Read or update the sha2 feature bit through flags.
bool	sha3
	Read or update the sha3 feature bit through flags.
bool	crc
	Read or update the crc feature bit through flags.
bool	lse
	Read or update the lse feature bit through flags.
bool	rdm
	Read or update the rdm feature bit through flags.
bool	fp16fml
	Read or update the fp16fml feature bit through flags.
bool	dotprod
	Read or update the dotprod feature bit through flags.
bool	complxnum
	Read or update the complxnum feature bit through flags.
bool	jsconv
	Read or update the jsconv feature bit through flags.
bool	rcpc
	Read or update the rcpc feature bit through flags.
bool	pauth
	Read or update the pauth feature bit through flags.
bool	i8mm
	Read or update the i8mm feature bit through flags.

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

Detailed Description

Exact ARM feature requirements; construction does not add prerequisites.

Definition at line 205 of file isa.h.

Member Function Documentation

◆ set()

void native::isa< arm >::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 225 of file isa.h.

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Member Data Documentation

◆ ebf16

bool native::isa< arm >::ebf16

Read or update the ebf16 feature bit through flags.

Definition at line 257 of file isa.h.

◆ sm3

bool native::isa< arm >::sm3

True when the SM3 instruction feature is present. Set or clear the independent SM3 requirement. Read or update the sm3 feature bit through flags.

Definition at line 260 of file isa.h.

◆ sm4

bool native::isa< arm >::sm4

Read or update the sm4 feature bit through flags.

True when the SM4 instruction feature is present. Set or clear the independent SM4 requirement.

Definition at line 263 of file isa.h.

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

src/native/isa.h

Public Types

Public Member Functions

Public Attributes