Struct NeonToken 

pub struct NeonToken { /* private fields */ }

Available on non-AArch64 only.

Stub for NEON token (not available on this architecture).

Implementations

impl NeonToken

pub unsafe fn forge_token_dangerously() -> Self

👎Deprecated since 0.9.29:

Renamed to from_context() on native architectures; on a foreign architecture the features cannot exist at all

Construct a proof for a foreign architecture. Always unsafe.

On this token’s native architecture the constructor is from_context(), a safe #[target_feature] function that rustc checks against the caller’s feature context. The current compilation target is a different architecture, so no such context can exist, there is nothing for rustc to check, and no from_context() is generated — only this unsafe fn.

Safety

Unsatisfiable: this token asserts CPU features that the target architecture does not have. Any token produced here is a lie, and using it to enter a SIMD region is undefined behavior. It exists so cross-architecture code compiles, not to be called.

impl NeonToken

pub fn dangerously_disable_token_process_wide( _disabled: bool, ) -> Result<(), CompileTimeGuaranteedError>

This token is not available on this architecture.

pub fn manually_disabled() -> Result<bool, CompileTimeGuaranteedError>

This token is not available on this architecture.

Trait Implementations

impl Clone for NeonToken

fn clone(&self) -> NeonToken

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for NeonToken

impl Debug for NeonToken

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Has128BitSimd for NeonToken

impl HasNeon for NeonToken

impl IntoConcreteToken for NeonToken

fn as_neon(self) -> Option<NeonToken>

Try to cast to NeonToken.

fn as_x64v1(self) -> Option<X64V1Token>

Returns Some(self) if this is exactly X64V1Token, None otherwise.

fn as_x64v2(self) -> Option<X64V2Token>

Try to cast to X64V2Token.

fn as_x64_crypto(self) -> Option<X64CryptoToken>

Try to cast to X64CryptoToken.

fn as_x64v3(self) -> Option<X64V3Token>

Try to cast to X64V3Token.

fn as_x64v3_crypto(self) -> Option<X64V3CryptoToken>

Try to cast to X64V3CryptoToken.

fn as_x64v3_gfni_crypto(self) -> Option<X64V3GfniCryptoToken>

Try to cast to X64V3GfniCryptoToken.

fn as_x64v4(self) -> Option<X64V4Token>

Try to cast to X64V4Token.

fn as_x64v4x(self) -> Option<X64V4xToken>

Try to cast to X64V4xToken.

fn as_avx512_fp16(self) -> Option<Avx512Fp16Token>

Try to cast to Avx512Fp16Token.

fn as_neon_aes(self) -> Option<NeonAesToken>

Try to cast to NeonAesToken.

fn as_neon_sha3(self) -> Option<NeonSha3Token>

Try to cast to NeonSha3Token.

fn as_neon_crc(self) -> Option<NeonCrcToken>

Try to cast to NeonCrcToken.

fn as_arm_v2(self) -> Option<Arm64V2Token>

Try to cast to Arm64V2Token.

fn as_arm_v3(self) -> Option<Arm64V3Token>

Try to cast to Arm64V3Token.

fn as_wasm128(self) -> Option<Wasm128Token>

Try to cast to Wasm128Token.

fn as_wasm128_relaxed(self) -> Option<Wasm128RelaxedToken>

Try to cast to Wasm128RelaxedToken.

fn as_scalar(self) -> Option<ScalarToken>

Try to cast to ScalarToken.

impl SimdToken for NeonToken

const NAME: &'static str = "NEON"

Human-readable name for diagnostics and error messages.

const TARGET_FEATURES: &'static str = "neon"

Comma-delimited target features (e.g., "sse,sse2,avx2,fma,bmi1,bmi2,f16c,lzcnt").

const ENABLE_TARGET_FEATURES: &'static str = "-Ctarget-feature=+neon"

RUSTFLAGS to enable these features at compile time.

const DISABLE_TARGET_FEATURES: &'static str = "-Ctarget-feature=-neon"

RUSTFLAGS to disable these features at compile time.

fn compiled_with() -> Option<bool>

Check if this binary was compiled with the required target features enabled.

fn summon() -> Option<Self>

Attempt to create a token with runtime feature detection.

fn name(&self) -> &'static str

Returns the human-readable name for this token.

fn guaranteed() -> Option<bool>

👎Deprecated since 0.6.0:

Use compiled_with() instead

Deprecated alias for compiled_with().

fn attempt() -> Option<Self>

Attempt to create a token with runtime feature detection.