-----------------------
- Again, the API is deeply reworked.
- The project has now a documentation:
`bytecode documentation <https://bytecode.readthedocs.io/>`_
- Fix bug 1: support jumps larger than 2^16.
- Add a new bytecode.peephole_opt module: a peephole
optimizer, code based on peephole optimizer of CPython 3.6 which is
implemented in C
- Add :func:`dump_bytecode` function to ease debug.
- :class:`Instr`:
* Add :func:`Instr.is_final` method
* Add :meth:`Instr.copy` and :meth:`ConcreteInstr.copy` methods
* :class:`Instr` now uses variable name instead of integer for cell and
free variables.
* Rename ``Instr.is_jump`` to :meth:`Instr.has_jump`
- :class:`ConcreteInstr` is now mutable
- Redesign the :class:`BytecodeBlocks` class:
- :class:`Block` have no more label attribute: jump targets are now
directly blocks
- Rename ``BytecodeBlocks.add_label()`` method to
:meth:`BytecodeBlocks.split_block`
- Labels are not more allowed in blocks
- :meth:`BytecodeBlocks.from_bytecode` now splits blocks after final
instructions (:meth:`Instr.is_final`) and after conditional jumps
(:meth:`Instr.is_cond_jump`). It helps the peephole optimizer to
respect the control flow and to remove dead code.
- Rework API to convert bytecode classes:
- BytecodeBlocks: Remove ``to_concrete_bytecode()`` and ``to_code()``
methods. Now you first have to convert blocks to bytecode using
:meth:`~BytecodeBlocks.to_bytecode`.
- Remove ``Bytecode.to_bytecode_blocks()`` method, replaced with
:meth:`BytecodeBlocks.from_bytecode`
- Remove ``ConcreteBytecode.to_concrete_bytecode()`` and
``Bytecode.to_bytecode()`` methods which did nothing (return ``self``)
- Fix :class:`ConcreteBytecode` for code with no constant (empty list of
constants)
- Fix argnames in :meth:`ConcreteBytecode.to_bytecode`: use CO_VARARGS and
CO_VARKEYWORDS flags to count the number of arguments
- Fix const_key() to compare correctly constants equal but of different types
and special cases like ``-0.0`` and ``+0.0``