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Update README.md #688

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# Pharo VM

This is the main branch of the Pharo VM.

For more details about the whole Pharo VM project refer to our [wiki](../../wiki).

This repository holds the code of the Pharo Virtual Machine.
This implementation started as a fork of [OpenSmalltalk-vm](https://github.com/OpenSmalltalk/opensmalltalk-vm).

The current project could not have been possible with all their previous work.

The current implementation presents the following core features:
- an indirect threaded bytecode compiler using GNU extensions
- a generational scavenger garbage collector: semi-space + nursery for the young generation, a mark-compact collecting for the old generation
- a space for permanent objects that need not to be scanned by the GC
- a baseline JIT compiler that
- translates primitive operations using IR templates
- translates bytecode methods using a simple abstract interpretation approach to reduce memory pressure (less loads/stores)
- FFI through the well-known [libFFI](https://github.com/libffi/libffi), and support for non-blocking FFI using worker threads

For more details about the whole Pharo VM project refer to our [wiki](../../wiki).

# Table of Contents

- Building the Virtual Machine
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