The shared forward copy returns zero, including for an empty region.
Callers admit disjoint regions (or identical addresses), not memmove overlap.
138def nativeMemoryCopyCode : Bytes =
139 (compiler-native-encode (family X86NativeAssembly) nativeMemoryCopyAssembly)The compiler supplied declaration spans and resolved links from this source snapshot. This page does not assert that this file belongs to a checked closure.