Available on
target_family="wasm"
and target feature simd128
only.Expand description
Stores a v128
vector to the given heap address.
This intrinsic will emit a store with an alignment of 1. While this is provided for completeness it is not strictly necessary, you can also store the pointer directly:
ⓘ
let a: &mut v128 = ...;
unsafe { v128_store(a, value) };
// .. is the same as ..
*a = value;
RunThe alignment of the store can be configured by doing a manual store without this intrinsic.
Unsafety
This intrinsic is unsafe because it takes a raw pointer as an argument, and the pointer must be valid to store 16 bytes to. Note that there is no alignment requirement on this pointer since this intrinsic performs a 1-aligned store.