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Niffy

Elixir library that compiles functions automatically to native code and loads them as NIFs.

Uses Eir to compile Core Erlang to LLVM IR, links it as a NIF and loads it.

This is mostly a proof of concept at the moment, it doesn't do anything useful yet. Mostly used to ease correctness testing of Eir at the moment, but the following things are on the short term roadmap:

  • Basic NIF generation
  • Support more of Eir in LLVM code generation
  • Type specialization
  • SIMD intrinsics

Example

The following is a small example using Niffy.

defmodule NiffyTest.NifTest do
  use Niffy

  # The following function will be compiled to native code and loaded
  # as a NIF.

  @niffy true
  def woohoo(a) do
    case a do
      1 -> :woo
      2 -> 1
      _ -> a + 2
    end
  end

end

Installation

If available in Hex, the package can be installed by adding niffy to your list of dependencies in mix.exs:

def deps do
  [
    {:niffy, "~> 0.1.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/niffy.

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libedit.so mix test