native::isa< wasm > Struct Reference

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

#include <isa.h>

Public Types
using	feature_type = typename detail::feature_traits<wasm>::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	simd128
	Read or update the simd128 feature bit through flags.
bool	relaxed_simd
	Read or update the relaxed_simd feature bit through flags.

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

Detailed Description

Exact WebAssembly feature requirements; construction does not add prerequisites.

Definition at line 280 of file isa.h.

Member Function Documentation

set()

void native::isa< wasm >::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 300 of file isa.h.

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

• src/native/isa.h