# Function v128_load

1.54.0 · Source

    pub unsafe fn v128_load(m: *const v128) -> v128

Available on `target_family="wasm"` and target feature `simd128` and WebAssembly only.
Expand description

Loads a `v128` vector from the given heap address.

This intrinsic will emit a load with an alignment of 1. While this is provided for completeness it is not strictly necessary, you can also load the pointer directly:

ⓘ

    let a: &v128 = ...;
    let value = unsafe { v128_load(a) };
    // .. is the same as ..
    let value = *a;

The alignment of the load can be configured by doing a manual load without this intrinsic.

## §Unsafety

This intrinsic is unsafe because it takes a raw pointer as an argument, and the pointer must be valid to load 16 bytes from. Note that there is no alignment requirement on this pointer since this intrinsic performs a 1-aligned load.