[pypy-issue] [issue1472] ast.Class are user-defined, modifiable on CPython

[Amaury Forgeot d Arc]

Amaury Forgeot d Arc <amauryfa at gmail.com> added the comment:

+1, especially if we have a custom allocator for those nodes (CPython uses a 
PyArena)
Importing large .py files is very slow with pypy (5x for 30k lines) and I 
measured that it's because of GC pressure.

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