gccpy

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• Python Front-End to GCC This is a fully ahead of time implementation of Python, built ontop of GCC for a feature rich, optimizing middle-end and backend.

** Building Building GCCPY is fairly confsing to most people who haven't built GCC before:

YOU CANNOT build GCC within the same directory of the sources!

#+BEGIN_SRC bash $ apt-get install bison flex build-essential #+END_SRC

Then to compile:

#+BEGIN_SRC bash $ git clone ... $ cd gccpy $ ./contrib/download_prerequisites # optional $ mkdir gccpy-build $ cd gccpy-build $ ../configure --prefix=/opt/gccpy
--enable-languages=python
--disable-multilib
--disable-bootstrap $ make $ cd - #+END_SRC

*** Usage

For my development sessions i generally pass:

#+BEGIN_SRC bash $ gccpy -fdump-tree-gimple -fpy-dump-dot -fpy-gen-main -fpy-optimize -O0 -g test.py -o test #+END_SRC

Options:

-fpy-gen-main Python has no explicit main method so we require at compile time for the user to explicitly say where the main method should be compiled in.

-fpy-dump-dot Dumps out the textural output of the DOT IL

-fpy-optimize Experimental optimizers for Python at the DOT IL level constant folding and propagation to some extend with data-flow analysis could be implemented.

-fdump-tree-gimple Dumps the textural output of the code generated for the GCC middle-end.

You can use all normal GCC options -O2 -g -mtune= -march= etc...

** Status

Very must still serves as a proof of concept but most of the core principles are implemented and work fairly well

** Major Projects

*** Garbage collector We need one.

*** Port Python stdlib Port the python stdlib and figure out if we want to implement modules as static libraries or shared libraries.

*** Multi-core Implement threading