[issue33387] Simplify bytecodes for try-finally, try-except and with blocks.

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

Mark merged his PR 6641 but forgot to mention bpo-33387:

commit fee552669f21ca294f57fe0df826945edc779090
Author: Mark Shannon <mark at hotpy.org>
Date:   Thu Nov 21 09:11:43 2019 +0000

    Produce cleaner bytecode for 'with' and 'async with' by generating separate code for normal and exceptional paths. (#6641)
    
    Remove BEGIN_FINALLY, END_FINALLY, CALL_FINALLY and POP_FINALLY bytecodes. Implement finally blocks by code duplication.
    Reimplement frame.lineno setter using line numbers rather than bytecode offsets.

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nosy: +vstinner

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33387>
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