Enum DataValue

pub enum DataValue {
    I8(i8),
    I16(i16),
    I32(i32),
    I64(i64),
    I128(i128),
    F16(Ieee16),
    F32(Ieee32),
    F64(Ieee64),
    F128(Ieee128),
    V128([u8; 16]),
    V64([u8; 8]),
    V32([u8; 4]),
    V16([u8; 2]),
}

Represent a data value. Where Value is an SSA reference, DataValue is the type + value that would be referred to by a Value.

Variants

I8(i8)

I16(i16)

I32(i32)

I64(i64)

I128(i128)

F16(Ieee16)

F32(Ieee32)

F64(Ieee64)

F128(Ieee128)

V128([u8; 16])

V64([u8; 8])

V32([u8; 4])

V16([u8; 2])

Implementations

impl DataValue

pub fn from_integer( imm: i128, ty: Type, ) -> Result<DataValue, DataValueCastFailure>

Try to cast an immediate integer (a wrapped i64 on most Cranelift instructions) to the given Cranelift Type.

pub fn ty(&self) -> Type

Return the Cranelift IR Type for this DataValue.

pub fn is_vector(&self) -> bool

Return true if the value is a vector (i.e. DataValue::V128).

pub fn to_be(self) -> Self

Converts self to big endian from target’s endianness.

pub fn to_le(self) -> Self

Converts self to little endian from target’s endianness.

pub fn write_to_slice_ne(&self, dst: &mut [u8])

Write a DataValue to a slice in native-endian byte order.

Panics:

Panics if the slice does not have enough space to accommodate the DataValue

pub fn write_to_slice_be(&self, dst: &mut [u8])

Write a DataValue to a slice in big-endian byte order.

Panics:

Panics if the slice does not have enough space to accommodate the DataValue

pub fn write_to_slice_le(&self, dst: &mut [u8])

Write a DataValue to a slice in little-endian byte order.

Panics:

Panics if the slice does not have enough space to accommodate the DataValue

pub fn read_from_slice_ne(src: &[u8], ty: Type) -> Self

Read a DataValue from a slice using a given Type with native-endian byte order.

Panics:

Panics if the slice does not have enough space to accommodate the DataValue

pub fn read_from_slice_be(src: &[u8], ty: Type) -> Self

Read a DataValue from a slice using a given Type in big-endian byte order.

Panics:

Panics if the slice does not have enough space to accommodate the DataValue

pub fn read_from_slice_le(src: &[u8], ty: Type) -> Self

Read a DataValue from a slice using a given Type in little-endian byte order.

Panics:

Panics if the slice does not have enough space to accommodate the DataValue

pub unsafe fn write_value_to(&self, p: *mut u128)

Write a DataValue to a memory location in native-endian byte order.

pub unsafe fn read_value_from(p: *const u128, ty: Type) -> Self

Read a DataValue from a memory location using a given Type in native-endian byte order.

pub fn bitwise_eq(&self, other: &DataValue) -> bool

Performs a bitwise comparison over the contents of DataValue.

Returns true if all bits are equal.

This behaviour is different from PartialEq for NaN floats.

Trait Implementations

impl Clone for DataValue

fn clone(&self) -> DataValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DataValue

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

Formats the value using the given formatter.

impl Display for DataValue

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

Formats the value using the given formatter.

impl From<[u8; 16]> for DataValue

fn from(data: [u8; 16]) -> Self

Converts to this type from the input type.

impl From<[u8; 2]> for DataValue

fn from(data: [u8; 2]) -> Self

Converts to this type from the input type.

impl From<[u8; 4]> for DataValue

fn from(data: [u8; 4]) -> Self

Converts to this type from the input type.

impl From<[u8; 8]> for DataValue

fn from(data: [u8; 8]) -> Self

Converts to this type from the input type.

impl From<Ieee128> for DataValue

fn from(data: Ieee128) -> Self

Converts to this type from the input type.

impl From<Ieee16> for DataValue

fn from(data: Ieee16) -> Self

Converts to this type from the input type.

impl From<Ieee32> for DataValue

fn from(data: Ieee32) -> Self

Converts to this type from the input type.

impl From<Ieee64> for DataValue

fn from(data: Ieee64) -> Self

Converts to this type from the input type.

impl From<Offset32> for DataValue

fn from(o: Offset32) -> Self

Converts to this type from the input type.

impl From<i128> for DataValue

fn from(data: i128) -> Self

Converts to this type from the input type.

impl From<i16> for DataValue

fn from(data: i16) -> Self

Converts to this type from the input type.

impl From<i32> for DataValue

fn from(data: i32) -> Self

Converts to this type from the input type.

impl From<i64> for DataValue

fn from(data: i64) -> Self

Converts to this type from the input type.

impl From<i8> for DataValue

fn from(data: i8) -> Self

Converts to this type from the input type.

impl PartialEq for DataValue

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for DataValue

fn partial_cmp(&self, other: &DataValue) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryInto<[u8; 16]> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<[u8; 16], Self::Error>

Performs the conversion.

impl TryInto<[u8; 2]> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<[u8; 2], Self::Error>

Performs the conversion.

impl TryInto<[u8; 4]> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<[u8; 4], Self::Error>

Performs the conversion.

impl TryInto<[u8; 8]> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<[u8; 8], Self::Error>

Performs the conversion.

impl TryInto<Ieee128> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Ieee128, Self::Error>

Performs the conversion.

impl TryInto<Ieee16> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Ieee16, Self::Error>

Performs the conversion.

impl TryInto<Ieee32> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Ieee32, Self::Error>

Performs the conversion.

impl TryInto<Ieee64> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<Ieee64, Self::Error>

Performs the conversion.

impl TryInto<i128> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<i128, Self::Error>

Performs the conversion.

impl TryInto<i16> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<i16, Self::Error>

Performs the conversion.

impl TryInto<i32> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<i32, Self::Error>

Performs the conversion.

impl TryInto<i64> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<i64, Self::Error>

Performs the conversion.

impl TryInto<i8> for DataValue

type Error = DataValueCastFailure

The type returned in the event of a conversion error.

fn try_into(self) -> Result<i8, Self::Error>

Performs the conversion.