CLR JIT is able to print "disam" for any method it compiles (or asked to compile via RuntimeHelpers.PrepareMethod)
However, this (and other) capabilities are enabled only in a special (Checked) version of clrjit
So we can download it (published from dotnet/runtime builds now) and use. It also allows to play with experimental or inner features which are stripped in release versions.
Doesn't work on Linux/macOS for some reason (JIT<->VM version mismatch?) so only Windows at the moment
https://github.com/xoofx/JitBuddy - it's based on clrmd so it doesn't require any special version of JIT. But disasm output is less friendly (addresses instead of friendly names for calls/CORINFO helpers, branch weights, etc)