I use FASM (https://flatassembler.net/), and I have been learning F# for about five years, so this is very interesting to me. I am guessing it is more like NASM than MASM because of the square brackets in the animated GIF example? I am trying to figure out how I might find this useful. I am trying to do wavelet transforms in F# that I currently do in C or Julia, and this might be fun for some assembly optimizations if worth it over the C library, but I doubt it because of optimizations.
Fasm is a dotnet tool running a watcher to observe what asm/il will be generated from a F# snippet. As an example of usage, its author use it to add an optimization in the F# compiler: https://github.com/dotnet/fsharp/pull/11414
Since it's the same context I'd rather they didn't reuse the name.