fvm is a Clojure library for writing self-optimizing interpreters.
fvm provides a function called defnode
for defining instruction nodes with the following signature:
(fvm/defnode <node-type> <opts> <handler-fn>)
- any node with the option
{::fvm/jit? true}
is considered a loop - if such a node is executed frequently enough, its next execution is put in "trace-mode"
- in trace-mode, all the sub-nodes executed are logged in a "trace"
- the trace is effectively an unrolled version of the loop with function calls inlined
- once the node finishes executing, this trace is "compiled" into a Clojure function
- the compiled version is used on future executions of this node
ednlang is a simple stack-based concatenative language implemented using fvm.
ednlang is meant to showcase all the features of fvm, and is also used to test and profile fvm.
Work is ongoing to implement a lisp on top of fvm.
This is EXPERIMENTAL software. Here be dragons.
Copyright © 2020 Divyansh Prakash
This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.
This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, with the GNU Classpath Exception which is available at https://www.gnu.org/software/classpath/license.html.