[Python-Dev] Micro-optimizations by adding special-case bytecodes? (original) (raw)

Xavier Morel python-dev at masklinn.net
Wed May 24 14:29:11 EDT 2017

On 2017-05-24, at 20:26 , Xavier Morel <python-dev at masklinn.net> wrote:

On 2017-05-24, at 20:07 , Ben Hoyt <benhoyt at gmail.com> wrote:

Hi folks, I was looking at some dis output today, and I was wondering if anyone has investigated optimizing Python (slightly) by adding special-case bytecodes for common expressions or statements involving constants? Python 3.6 added an opcode specifically for dicts with constant keys: https://bugs.python.org/issue27140. Though I guess that's a slightly different case as it's not a peephole-fused opcode.

And followup, Python 2.7 did add fused opcodes related to conditional: http://bugs.python.org/issue4715.

More information about the Python-Dev mailing list