Message 280574 - Python tracker

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In-reply-to
Author	rhettinger
Recipients	rhettinger, serhiy.storchaka
Date	2016年11月11日.12:10:41
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1478866241.77.0.0742898329944.issue28665@psf.upfronthosting.co.za>

Content
The STORE_FAST, LOAD_FAST, and LOAD_DEREF opcodes all use fast macros for variable access. This patch harmonizes STORE_DEREF to follow the same pattern. Both the C code and the generated assembly look nicer. Gives an approx 40% speed-up (using both Clang and GCC-6) on the "store_nonlocal" portion of the variable access benchmark at http://code.activestate.com/recipes/577834 The eliminates the nonlocal speed penalty, making cell variable updates run nearly as fast as updates to locals.

Content

The STORE_FAST, LOAD_FAST, and LOAD_DEREF opcodes all use fast macros for variable access. This patch harmonizes STORE_DEREF to follow the same pattern.
Both the C code and the generated assembly look nicer. Gives an approx 40% speed-up (using both Clang and GCC-6) on the "store_nonlocal" portion of the variable access benchmark at http://code.activestate.com/recipes/577834
The eliminates the nonlocal speed penalty, making cell variable updates run nearly as fast as updates to locals.

History
Date	User	Action	Args
2016年11月11日 12:10:41	rhettinger	set	recipients: + rhettinger, serhiy.storchaka
2016年11月11日 12:10:41	rhettinger	set	messageid: <1478866241.77.0.0742898329944.issue28665@psf.upfronthosting.co.za>
2016年11月11日 12:10:41	rhettinger	link	issue28665 messages
2016年11月11日 12:10:41	rhettinger	create

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