This is supported on WebAssembly and target feature
simd128
only.Expand description
Load two 32-bit integers and sign extend each one to a 64-bit lane
Unsafety
This intrinsic is unsafe because it takes a raw pointer as an argument, and the pointer must be valid to load 8 bytes from. Note that there is no alignment requirement on this pointer since this intrinsic performs a 1-aligned load.