🔬This is a nightly-only experimental API. (

`simd_wasm64`

#90599)Available on

**only.**`target_family="wasm"`

## Expand description

Platform-specific intrinsics for the `wasm`

target family.

See the module documentation for more details.

## Structs

- WASM-specific 128-bit wide SIMD vector type.

## Functions

- Computes
`a * b + c`

with either one rounding or two roundings. - A relaxed version of
`f32x4_max`

which is either`f32x4_max`

or`f32x4_pmax`

. - A relaxed version of
`f32x4_min`

which is either`f32x4_min`

or`f32x4_pmin`

. - Computes
`-a * b + c`

with either one rounding or two roundings. - Computes
`a * b + c`

with either one rounding or two roundings. - A relaxed version of
`f64x2_max`

which is either`f64x2_max`

or`f64x2_pmax`

. - A relaxed version of
`f64x2_min`

which is either`f64x2_min`

or`f64x2_pmin`

. - Computes
`-a * b + c`

with either one rounding or two roundings. - A relaxed version of
`v128_bitselect`

where this either behaves the same as`v128_bitselect`

or the high bit of each lane`m`

is inspected and the corresponding lane of`a`

is chosen if the bit is 1 or the lane of`b`

is chosen if it’s zero. - A relaxed version of
`i8x16_swizzle(a, s)`

which selects lanes from`a`

using indices in`s`

. - A relaxed dot-product instruction.
- A relaxed version of
`v128_bitselect`

where this either behaves the same as`v128_bitselect`

or the high bit of each lane`m`

is inspected and the corresponding lane of`a`

is chosen if the bit is 1 or the lane of`b`

is chosen if it’s zero. - A relaxed version of
`i16x8_relaxed_q15mulr`

where if both lanes are`i16::MIN`

then the result is either`i16::MIN`

or`i16::MAX`

. - Similar to
`i16x8_relaxed_dot_i8x16_i7x16`

except that the intermediate`i16x8`

result is fed into`i32x4_extadd_pairwise_i16x8`

followed by`i32x4_add`

to add the value`c`

to the result. - A relaxed version of
`v128_bitselect`

where this either behaves the same as`v128_bitselect`

or the high bit of each lane`m`

is inspected and the corresponding lane of`a`

is chosen if the bit is 1 or the lane of`b`

is chosen if it’s zero. - A relaxed version of
`i32x4_trunc_sat_f32x4(a)`

converts the`f32`

lanes of`a`

to signed 32-bit integers. - A relaxed version of
`i32x4_trunc_sat_f64x2_zero(a)`

converts the`f64`

lanes of`a`

to signed 32-bit integers and the upper two lanes are zero. `v128_bitselect`

where this either behaves the same as`v128_bitselect`

or the high bit of each lane`m`

is inspected and the corresponding lane of`a`

is chosen if the bit is 1 or the lane of`b`

is chosen if it’s zero.- Corresponding intrinsic to wasm’s
`memory.atomic.notify`

instruction - Corresponding intrinsic to wasm’s
`memory.atomic.wait32`

instruction - Corresponding intrinsic to wasm’s
`memory.atomic.wait64`

instruction - A relaxed version of
`u32x4_trunc_sat_f32x4(a)`

converts the`f32`

lanes of`a`

to unsigned 32-bit integers. - A relaxed version of
`u32x4_trunc_sat_f64x2_zero(a)`

converts the`f64`

lanes of`a`

to unsigned 32-bit integers and the upper two lanes are zero. - Materializes a SIMD value from the provided operands.
- f32x4_abs
`simd128`

Calculates the absolute value of each lane of a 128-bit vector interpreted as four 32-bit floating point numbers. - f32x4_add
`simd128`

Lane-wise addition of two 128-bit vectors interpreted as four 32-bit floating point numbers. - f32x4_ceil
`simd128`

Lane-wise rounding to the nearest integral value not smaller than the input. - f32x4_convert_i32x4
`simd128`

Converts a 128-bit vector interpreted as four 32-bit signed integers into a 128-bit vector of four 32-bit floating point numbers. - f32x4_convert_u32x4
`simd128`

Converts a 128-bit vector interpreted as four 32-bit unsigned integers into a 128-bit vector of four 32-bit floating point numbers. - f32x4_demote_f64x2_zero
`simd128`

Conversion of the two double-precision floating point lanes to two lower single-precision lanes of the result. The two higher lanes of the result are initialized to zero. If the conversion result is not representable as a single-precision floating point number, it is rounded to the nearest-even representable number. - f32x4_div
`simd128`

Lane-wise division of two 128-bit vectors interpreted as four 32-bit floating point numbers. - f32x4_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit floating point numbers. - f32x4_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 4 packed f32 numbers. - f32x4_floor
`simd128`

Lane-wise rounding to the nearest integral value not greater than the input. - f32x4_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit floating point numbers. - f32x4_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit floating point numbers. - f32x4_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit floating point numbers. - f32x4_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit floating point numbers. - f32x4_max
`simd128`

Calculates the lane-wise minimum of two 128-bit vectors interpreted as four 32-bit floating point numbers. - f32x4_min
`simd128`

Calculates the lane-wise minimum of two 128-bit vectors interpreted as four 32-bit floating point numbers. - f32x4_mul
`simd128`

Lane-wise multiplication of two 128-bit vectors interpreted as four 32-bit floating point numbers. - f32x4_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit floating point numbers. - f32x4_nearest
`simd128`

Lane-wise rounding to the nearest integral value; if two values are equally near, rounds to the even one. - f32x4_neg
`simd128`

Negates each lane of a 128-bit vector interpreted as four 32-bit floating point numbers. - f32x4_pmax
`simd128`

Lane-wise maximum value, defined as`a < b ? b : a`

- f32x4_pmin
`simd128`

Lane-wise minimum value, defined as`b < a ? b : a`

- f32x4_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 4 packed f32 numbers. - f32x4_splat
`simd128`

Creates a vector with identical lanes. - f32x4_sqrt
`simd128`

Calculates the square root of each lane of a 128-bit vector interpreted as four 32-bit floating point numbers. - f32x4_sub
`simd128`

Lane-wise subtraction of two 128-bit vectors interpreted as four 32-bit floating point numbers. - f32x4_trunc
`simd128`

Lane-wise rounding to the nearest integral value with the magnitude not larger than the input. - Materializes a SIMD value from the provided operands.
- f64x2_abs
`simd128`

Calculates the absolute value of each lane of a 128-bit vector interpreted as two 64-bit floating point numbers. - f64x2_add
`simd128`

Lane-wise add of two 128-bit vectors interpreted as two 64-bit floating point numbers. - f64x2_ceil
`simd128`

Lane-wise rounding to the nearest integral value not smaller than the input. - f64x2_convert_low_i32x4
`simd128`

Lane-wise conversion from integer to floating point. - f64x2_convert_low_u32x4
`simd128`

Lane-wise conversion from integer to floating point. - f64x2_div
`simd128`

Lane-wise divide of two 128-bit vectors interpreted as two 64-bit floating point numbers. - f64x2_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit floating point numbers. - f64x2_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 2 packed f64 numbers. - f64x2_floor
`simd128`

Lane-wise rounding to the nearest integral value not greater than the input. - f64x2_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit floating point numbers. - f64x2_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit floating point numbers. - f64x2_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit floating point numbers. - f64x2_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit floating point numbers. - f64x2_max
`simd128`

Calculates the lane-wise maximum of two 128-bit vectors interpreted as two 64-bit floating point numbers. - f64x2_min
`simd128`

Calculates the lane-wise minimum of two 128-bit vectors interpreted as two 64-bit floating point numbers. - f64x2_mul
`simd128`

Lane-wise multiply of two 128-bit vectors interpreted as two 64-bit floating point numbers. - f64x2_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit floating point numbers. - f64x2_nearest
`simd128`

Lane-wise rounding to the nearest integral value; if two values are equally near, rounds to the even one. - f64x2_neg
`simd128`

Negates each lane of a 128-bit vector interpreted as two 64-bit floating point numbers. - f64x2_pmax
`simd128`

Lane-wise maximum value, defined as`a < b ? b : a`

- f64x2_pmin
`simd128`

Lane-wise minimum value, defined as`b < a ? b : a`

- f64x2_promote_low_f32x4
`simd128`

Conversion of the two lower single-precision floating point lanes to the two double-precision lanes of the result. - f64x2_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 2 packed f64 numbers. - f64x2_splat
`simd128`

Creates a vector with identical lanes. - f64x2_sqrt
`simd128`

Calculates the square root of each lane of a 128-bit vector interpreted as two 64-bit floating point numbers. - f64x2_sub
`simd128`

Lane-wise subtract of two 128-bit vectors interpreted as two 64-bit floating point numbers. - f64x2_trunc
`simd128`

Lane-wise rounding to the nearest integral value with the magnitude not larger than the input. - Materializes a SIMD value from the provided operands.
- i8x16_abs
`simd128`

Lane-wise wrapping absolute value. - i8x16_add
`simd128`

Adds two 128-bit vectors as if they were two packed sixteen 8-bit integers. - i8x16_add_sat
`simd128`

Adds two 128-bit vectors as if they were two packed sixteen 8-bit signed integers, saturating on overflow to`i8::MAX`

. - i8x16_all_true
`simd128`

Returns true if all lanes are non-zero, false otherwise. - i8x16_bitmask
`simd128`

Extracts the high bit for each lane in`a`

and produce a scalar mask with all bits concatenated. - i8x16_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit integers. - i8x16_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 16 packed i8 numbers. - i8x16_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit signed integers. - i8x16_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit signed integers. - i8x16_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit signed integers. - i8x16_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit signed integers. - i8x16_max
`simd128`

Compares lane-wise signed integers, and returns the maximum of each pair. - i8x16_min
`simd128`

Compares lane-wise signed integers, and returns the minimum of each pair. - i8x16_narrow_i16x8
`simd128`

Converts two input vectors into a smaller lane vector by narrowing each lane. - i8x16_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit integers. - i8x16_neg
`simd128`

Negates a 128-bit vectors interpreted as sixteen 8-bit signed integers - i8x16_popcnt
`simd128`

Count the number of bits set to one within each lane. - i8x16_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 16 packed i8 numbers. - i8x16_shl
`simd128`

Shifts each lane to the left by the specified number of bits. - i8x16_shr
`simd128`

Shifts each lane to the right by the specified number of bits, sign extending. - i8x16_shuffle
`simd128`

Returns a new vector with lanes selected from the lanes of the two input vectors`$a`

and`$b`

specified in the 16 immediate operands. - i8x16_splat
`simd128`

Creates a vector with identical lanes. - i8x16_sub
`simd128`

Subtracts two 128-bit vectors as if they were two packed sixteen 8-bit integers. - i8x16_sub_sat
`simd128`

Subtracts two 128-bit vectors as if they were two packed sixteen 8-bit signed integers, saturating on overflow to`i8::MIN`

. - i8x16_swizzle
`simd128`

Returns a new vector with lanes selected from the lanes of the first input vector`a`

specified in the second input vector`s`

. - Materializes a SIMD value from the provided operands.
- i16x8_abs
`simd128`

Lane-wise wrapping absolute value. - i16x8_add
`simd128`

Adds two 128-bit vectors as if they were two packed eight 16-bit integers. - i16x8_add_sat
`simd128`

Adds two 128-bit vectors as if they were two packed eight 16-bit signed integers, saturating on overflow to`i16::MAX`

. - i16x8_all_true
`simd128`

Returns true if all lanes are non-zero, false otherwise. - i16x8_bitmask
`simd128`

Extracts the high bit for each lane in`a`

and produce a scalar mask with all bits concatenated. - i16x8_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit integers. - i16x8_extadd_pairwise_i8x16
`simd128`

Integer extended pairwise addition producing extended results (twice wider results than the inputs). - i16x8_extadd_pairwise_u8x16
`simd128`

Integer extended pairwise addition producing extended results (twice wider results than the inputs). - i16x8_extend_high_i8x16
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, sign extended. - i16x8_extend_high_u8x16
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, zero extended. - i16x8_extend_low_i8x16
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, sign extended. - i16x8_extend_low_u8x16
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, zero extended. - i16x8_extmul_high_i8x16
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i16x8_extmul_high_u8x16
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i16x8_extmul_low_i8x16
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i16x8_extmul_low_u8x16
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i16x8_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 8 packed i16 numbers. - i16x8_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit signed integers. - i16x8_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit signed integers. - i16x8_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit signed integers. - Load eight 8-bit integers and sign extend each one to a 16-bit lane
- Load eight 8-bit integers and zero extend each one to a 16-bit lane
- i16x8_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit signed integers. - i16x8_max
`simd128`

Compares lane-wise signed integers, and returns the maximum of each pair. - i16x8_min
`simd128`

Compares lane-wise signed integers, and returns the minimum of each pair. - i16x8_mul
`simd128`

Multiplies two 128-bit vectors as if they were two packed eight 16-bit signed integers. - i16x8_narrow_i32x4
`simd128`

Converts two input vectors into a smaller lane vector by narrowing each lane. - i16x8_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit integers. - i16x8_neg
`simd128`

Negates a 128-bit vectors interpreted as eight 16-bit signed integers - i16x8_q15mulr_sat
`simd128`

Lane-wise saturating rounding multiplication in Q15 format. - i16x8_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 8 packed i16 numbers. - i16x8_shl
`simd128`

Shifts each lane to the left by the specified number of bits. - i16x8_shr
`simd128`

Shifts each lane to the right by the specified number of bits, sign extending. - i16x8_shuffle
`simd128`

Same as`i8x16_shuffle`

, except operates as if the inputs were eight 16-bit integers, only taking 8 indices to shuffle. - i16x8_splat
`simd128`

Creates a vector with identical lanes. - i16x8_sub
`simd128`

Subtracts two 128-bit vectors as if they were two packed eight 16-bit integers. - i16x8_sub_sat
`simd128`

Subtracts two 128-bit vectors as if they were two packed eight 16-bit signed integers, saturating on overflow to`i16::MIN`

. - Materializes a SIMD value from the provided operands.
- i32x4_abs
`simd128`

Lane-wise wrapping absolute value. - i32x4_add
`simd128`

Adds two 128-bit vectors as if they were two packed four 32-bit integers. - i32x4_all_true
`simd128`

Returns true if all lanes are non-zero, false otherwise. - i32x4_bitmask
`simd128`

Extracts the high bit for each lane in`a`

and produce a scalar mask with all bits concatenated. - i32x4_dot_i16x8
`simd128`

Lane-wise multiply signed 16-bit integers in the two input vectors and add adjacent pairs of the full 32-bit results. - i32x4_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit integers. - i32x4_extadd_pairwise_i16x8
`simd128`

Integer extended pairwise addition producing extended results (twice wider results than the inputs). - i32x4_extadd_pairwise_u16x8
`simd128`

Integer extended pairwise addition producing extended results (twice wider results than the inputs). - i32x4_extend_high_i16x8
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, sign extended. - i32x4_extend_high_u16x8
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, zero extended. - i32x4_extend_low_i16x8
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, sign extended. - i32x4_extend_low_u16x8
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, zero extended. - i32x4_extmul_high_i16x8
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i32x4_extmul_high_u16x8
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i32x4_extmul_low_i16x8
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i32x4_extmul_low_u16x8
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i32x4_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 4 packed i32 numbers. - i32x4_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit signed integers. - i32x4_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit signed integers. - i32x4_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit signed integers. - Load four 16-bit integers and sign extend each one to a 32-bit lane
- Load four 16-bit integers and zero extend each one to a 32-bit lane
- i32x4_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit signed integers. - i32x4_max
`simd128`

Compares lane-wise signed integers, and returns the maximum of each pair. - i32x4_min
`simd128`

Compares lane-wise signed integers, and returns the minimum of each pair. - i32x4_mul
`simd128`

Multiplies two 128-bit vectors as if they were two packed four 32-bit signed integers. - i32x4_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit integers. - i32x4_neg
`simd128`

Negates a 128-bit vectors interpreted as four 32-bit signed integers - i32x4_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 4 packed i32 numbers. - i32x4_shl
`simd128`

Shifts each lane to the left by the specified number of bits. - i32x4_shr
`simd128`

Shifts each lane to the right by the specified number of bits, sign extending. - i32x4_shuffle
`simd128`

Same as`i8x16_shuffle`

, except operates as if the inputs were four 32-bit integers, only taking 4 indices to shuffle. - i32x4_splat
`simd128`

Creates a vector with identical lanes. - i32x4_sub
`simd128`

Subtracts two 128-bit vectors as if they were two packed four 32-bit integers. - i32x4_trunc_sat_f32x4
`simd128`

Converts a 128-bit vector interpreted as four 32-bit floating point numbers into a 128-bit vector of four 32-bit signed integers. - i32x4_trunc_sat_f64x2_zero
`simd128`

Saturating conversion of the two double-precision floating point lanes to two lower integer lanes using the IEEE`convertToIntegerTowardZero`

function. - Materializes a SIMD value from the provided operands.
- i64x2_abs
`simd128`

Lane-wise wrapping absolute value. - i64x2_add
`simd128`

Adds two 128-bit vectors as if they were two packed two 64-bit integers. - i64x2_all_true
`simd128`

Returns true if all lanes are non-zero, false otherwise. - i64x2_bitmask
`simd128`

Extracts the high bit for each lane in`a`

and produce a scalar mask with all bits concatenated. - i64x2_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit integers. - i64x2_extend_high_i32x4
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, sign extended. - i64x2_extend_high_u32x4
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, zero extended. - i64x2_extend_low_i32x4
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, sign extended. - i64x2_extend_low_u32x4
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, zero extended. - i64x2_extmul_high_i32x4
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i64x2_extmul_high_u32x4
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i64x2_extmul_low_i32x4
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i64x2_extmul_low_u32x4
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - i64x2_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 2 packed i64 numbers. - i64x2_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit signed integers. - i64x2_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit signed integers. - i64x2_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit signed integers. - Load two 32-bit integers and sign extend each one to a 64-bit lane
- Load two 32-bit integers and zero extend each one to a 64-bit lane
- i64x2_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit signed integers. - i64x2_mul
`simd128`

Multiplies two 128-bit vectors as if they were two packed two 64-bit integers. - i64x2_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit integers. - i64x2_neg
`simd128`

Negates a 128-bit vectors interpreted as two 64-bit signed integers - i64x2_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 2 packed i64 numbers. - i64x2_shl
`simd128`

Shifts each lane to the left by the specified number of bits. - i64x2_shr
`simd128`

Shifts each lane to the right by the specified number of bits, sign extending. - i64x2_shuffle
`simd128`

Same as`i8x16_shuffle`

, except operates as if the inputs were two 64-bit integers, only taking 2 indices to shuffle. - i64x2_splat
`simd128`

Creates a vector with identical lanes. - i64x2_sub
`simd128`

Subtracts two 128-bit vectors as if they were two packed two 64-bit integers. - Corresponding intrinsic to wasm’s
`memory.grow`

instruction - Corresponding intrinsic to wasm’s
`memory.size`

instruction - Materializes a SIMD value from the provided operands.
- u8x16_add
`simd128`

Adds two 128-bit vectors as if they were two packed sixteen 8-bit integers. - u8x16_add_sat
`simd128`

Adds two 128-bit vectors as if they were two packed sixteen 8-bit unsigned integers, saturating on overflow to`u8::MAX`

. - u8x16_all_true
`simd128`

Returns true if all lanes are non-zero, false otherwise. - u8x16_avgr
`simd128`

Lane-wise rounding average. - u8x16_bitmask
`simd128`

Extracts the high bit for each lane in`a`

and produce a scalar mask with all bits concatenated. - u8x16_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit integers. - u8x16_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 16 packed u8 numbers. - u8x16_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit unsigned integers. - u8x16_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit unsigned integers. - u8x16_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit unsigned integers. - u8x16_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit unsigned integers. - u8x16_max
`simd128`

Compares lane-wise unsigned integers, and returns the maximum of each pair. - u8x16_min
`simd128`

Compares lane-wise unsigned integers, and returns the minimum of each pair. - u8x16_narrow_i16x8
`simd128`

Converts two input vectors into a smaller lane vector by narrowing each lane. - u8x16_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 16 eight-bit integers. - u8x16_popcnt
`simd128`

Count the number of bits set to one within each lane. - u8x16_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 16 packed u8 numbers. - u8x16_shl
`simd128`

Shifts each lane to the left by the specified number of bits. - u8x16_shr
`simd128`

Shifts each lane to the right by the specified number of bits, shifting in zeros. - u8x16_shuffle
`simd128`

Returns a new vector with lanes selected from the lanes of the two input vectors`$a`

and`$b`

specified in the 16 immediate operands. - u8x16_splat
`simd128`

Creates a vector with identical lanes. - u8x16_sub
`simd128`

Subtracts two 128-bit vectors as if they were two packed sixteen 8-bit integers. - u8x16_sub_sat
`simd128`

Subtracts two 128-bit vectors as if they were two packed sixteen 8-bit unsigned integers, saturating on overflow to 0. - u8x16_swizzle
`simd128`

Returns a new vector with lanes selected from the lanes of the first input vector`a`

specified in the second input vector`s`

. - Materializes a SIMD value from the provided operands.
- u16x8_add
`simd128`

Adds two 128-bit vectors as if they were two packed eight 16-bit integers. - u16x8_add_sat
`simd128`

Adds two 128-bit vectors as if they were two packed eight 16-bit unsigned integers, saturating on overflow to`u16::MAX`

. - u16x8_all_true
`simd128`

Returns true if all lanes are non-zero, false otherwise. - u16x8_avgr
`simd128`

Lane-wise rounding average. - u16x8_bitmask
`simd128`

Extracts the high bit for each lane in`a`

and produce a scalar mask with all bits concatenated. - u16x8_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit integers. - u16x8_extadd_pairwise_u8x16
`simd128`

Integer extended pairwise addition producing extended results (twice wider results than the inputs). - u16x8_extend_high_u8x16
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, zero extended. - u16x8_extend_low_u8x16
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, zero extended. - u16x8_extmul_high_u8x16
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - u16x8_extmul_low_u8x16
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - u16x8_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 8 packed u16 numbers. - u16x8_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit unsigned integers. - u16x8_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit unsigned integers. - u16x8_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit unsigned integers. - Load eight 8-bit integers and zero extend each one to a 16-bit lane
- u16x8_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit unsigned integers. - u16x8_max
`simd128`

Compares lane-wise unsigned integers, and returns the maximum of each pair. - u16x8_min
`simd128`

Compares lane-wise unsigned integers, and returns the minimum of each pair. - u16x8_mul
`simd128`

Multiplies two 128-bit vectors as if they were two packed eight 16-bit signed integers. - u16x8_narrow_i32x4
`simd128`

Converts two input vectors into a smaller lane vector by narrowing each lane. - u16x8_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 8 sixteen-bit integers. - u16x8_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 8 packed u16 numbers. - u16x8_shl
`simd128`

Shifts each lane to the left by the specified number of bits. - u16x8_shr
`simd128`

Shifts each lane to the right by the specified number of bits, shifting in zeros. - u16x8_shuffle
`simd128`

Same as`i8x16_shuffle`

, except operates as if the inputs were eight 16-bit integers, only taking 8 indices to shuffle. - u16x8_splat
`simd128`

Creates a vector with identical lanes. - u16x8_sub
`simd128`

Subtracts two 128-bit vectors as if they were two packed eight 16-bit integers. - u16x8_sub_sat
`simd128`

Subtracts two 128-bit vectors as if they were two packed eight 16-bit unsigned integers, saturating on overflow to 0. - Materializes a SIMD value from the provided operands.
- u32x4_add
`simd128`

Adds two 128-bit vectors as if they were two packed four 32-bit integers. - u32x4_all_true
`simd128`

Returns true if all lanes are non-zero, false otherwise. - u32x4_bitmask
`simd128`

Extracts the high bit for each lane in`a`

and produce a scalar mask with all bits concatenated. - u32x4_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit integers. - u32x4_extadd_pairwise_u16x8
`simd128`

Integer extended pairwise addition producing extended results (twice wider results than the inputs). - u32x4_extend_high_u16x8
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, zero extended. - u32x4_extend_low_u16x8
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, zero extended. - u32x4_extmul_high_u16x8
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - u32x4_extmul_low_u16x8
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - u32x4_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 4 packed u32 numbers. - u32x4_ge
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit unsigned integers. - u32x4_gt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit unsigned integers. - u32x4_le
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit unsigned integers. - Load four 16-bit integers and zero extend each one to a 32-bit lane
- u32x4_lt
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit unsigned integers. - u32x4_max
`simd128`

Compares lane-wise unsigned integers, and returns the maximum of each pair. - u32x4_min
`simd128`

Compares lane-wise unsigned integers, and returns the minimum of each pair. - u32x4_mul
`simd128`

Multiplies two 128-bit vectors as if they were two packed four 32-bit signed integers. - u32x4_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 4 thirty-two-bit integers. - u32x4_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 4 packed u32 numbers. - u32x4_shl
`simd128`

Shifts each lane to the left by the specified number of bits. - u32x4_shr
`simd128`

Shifts each lane to the right by the specified number of bits, shifting in zeros. - u32x4_shuffle
`simd128`

Same as`i8x16_shuffle`

, except operates as if the inputs were four 32-bit integers, only taking 4 indices to shuffle. - u32x4_splat
`simd128`

Creates a vector with identical lanes. - u32x4_sub
`simd128`

Subtracts two 128-bit vectors as if they were two packed four 32-bit integers. - u32x4_trunc_sat_f32x4
`simd128`

Converts a 128-bit vector interpreted as four 32-bit floating point numbers into a 128-bit vector of four 32-bit unsigned integers. - u32x4_trunc_sat_f64x2_zero
`simd128`

Saturating conversion of the two double-precision floating point lanes to two lower integer lanes using the IEEE`convertToIntegerTowardZero`

function. - Materializes a SIMD value from the provided operands.
- u64x2_add
`simd128`

Adds two 128-bit vectors as if they were two packed two 64-bit integers. - u64x2_all_true
`simd128`

Returns true if all lanes are non-zero, false otherwise. - u64x2_bitmask
`simd128`

Extracts the high bit for each lane in`a`

and produce a scalar mask with all bits concatenated. - u64x2_eq
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit integers. - u64x2_extend_high_u32x4
`simd128`

Converts high half of the smaller lane vector to a larger lane vector, zero extended. - u64x2_extend_low_u32x4
`simd128`

Converts low half of the smaller lane vector to a larger lane vector, zero extended. - u64x2_extmul_high_u32x4
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - u64x2_extmul_low_u32x4
`simd128`

Lane-wise integer extended multiplication producing twice wider result than the inputs. - u64x2_extract_lane
`simd128`

Extracts a lane from a 128-bit vector interpreted as 2 packed u64 numbers. - Load two 32-bit integers and zero extend each one to a 64-bit lane
- u64x2_mul
`simd128`

Multiplies two 128-bit vectors as if they were two packed two 64-bit integers. - u64x2_ne
`simd128`

Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit integers. - u64x2_replace_lane
`simd128`

Replaces a lane from a 128-bit vector interpreted as 2 packed u64 numbers. - u64x2_shl
`simd128`

Shifts each lane to the left by the specified number of bits. - u64x2_shr
`simd128`

Shifts each lane to the right by the specified number of bits, shifting in zeros. - u64x2_shuffle
`simd128`

Same as`i8x16_shuffle`

, except operates as if the inputs were two 64-bit integers, only taking 2 indices to shuffle. - u64x2_splat
`simd128`

Creates a vector with identical lanes. - u64x2_sub
`simd128`

Subtracts two 128-bit vectors as if they were two packed two 64-bit integers. - Generates the
`unreachable`

instruction, which causes an unconditional trap. - v128_and
`simd128`

Performs a bitwise and of the two input 128-bit vectors, returning the resulting vector. - v128_andnot
`simd128`

Bitwise AND of bits of`a`

and the logical inverse of bits of`b`

. - v128_any_true
`simd128`

Returns`true`

if any bit in`a`

is set, or`false`

otherwise. - v128_bitselect
`simd128`

Use the bitmask in`c`

to select bits from`v1`

when 1 and`v2`

when 0. - Loads a
`v128`

vector from the given heap address. - Loads an 8-bit value from
`m`

and sets lane`L`

of`v`

to that value. - Load a single element and splat to all lanes of a v128 vector.
- Loads a 16-bit value from
`m`

and sets lane`L`

of`v`

to that value. - Load a single element and splat to all lanes of a v128 vector.
- Loads a 32-bit value from
`m`

and sets lane`L`

of`v`

to that value. - Load a single element and splat to all lanes of a v128 vector.
- Load a 32-bit element into the low bits of the vector and sets all other bits to zero.
- Loads a 64-bit value from
`m`

and sets lane`L`

of`v`

to that value. - Load a single element and splat to all lanes of a v128 vector.
- Load a 64-bit element into the low bits of the vector and sets all other bits to zero.
- v128_not
`simd128`

Flips each bit of the 128-bit input vector. - v128_or
`simd128`

Performs a bitwise or of the two input 128-bit vectors, returning the resulting vector. - Stores a
`v128`

vector to the given heap address. - Stores the 8-bit value from lane
`L`

of`v`

into`m`

- Stores the 16-bit value from lane
`L`

of`v`

into`m`

- Stores the 32-bit value from lane
`L`

of`v`

into`m`

- Stores the 64-bit value from lane
`L`

of`v`

into`m`

- v128_xor
`simd128`

Performs a bitwise xor of the two input 128-bit vectors, returning the resulting vector.