Add RISCV64 Native Code Generator (NCG) to master
This is the RISC64 NCG branch that will be merged; i.e. it's based on master.
The testsuite is 100% successful/"green".
Commits could be more squashed, however I would wait for the commits to come from fixing (upcoming) review comments.
Tickets:
A quick guide to build this as cross-compiler with Nix: https://gitlab.haskell.org/ghc/ghc/-/wikis/RISCV64/RISCV64-Nix-cross-environment-(hacky)
Edited by Sven Tennie