New submission from Demur Rumed: Attached is a patch based off #26647 which converts ceval to read opcode/oparg by casting next_instr to an unsigned short. I don't believe we need to complicate the code with checking the pointer alignment of the instruction stream; some effort must be gone through to generate bytecode off alignment, & if the issue comes up it's because someone's using the C API on a CPU that doesn't support unaligned reads to generate their own custom bytecode. Anyways pybench went from 16.5 on wordcode to 16.0 for me
The change works through replacing NEXTOP/NEXTARG with a NEXTOPARG macro ---------- components: Interpreter Core files: ushort.patch keywords: patch messages: 266209 nosy: Demur Rumed priority: normal severity: normal status: open title: ceval: Wordcode follow up, explicit unsigned short read type: performance versions: Python 3.6 Added file: http://bugs.python.org/file42961/ushort.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27097> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
