Message 281720 - Python tracker

Message281720

Author	vstinner
Recipients	matrixise, rhettinger, serhiy.storchaka, vstinner
Date	2016-11-25.14:08:21
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1480082901.4.0.232296609913.issue28800@psf.upfronthosting.co.za>
In-reply-to

Content
> Do you want to add RETURN_NONE or RETURN_CONST? Or both? Only RETURN_NONE because on some corner cases it allow to avoid completely the None constant from code.co_consts and reduce the stack size. I'm not sure that I want to start taking the same road of WPython which added a lot of specialized instructions (combining two or more existing instructions). As you said, it has a cost on the maintenance, and might have a negative impact if _PyEval_EvalFrameDefault() becomes too big.

Content

> Do you want to add RETURN_NONE or RETURN_CONST? Or both?

Only RETURN_NONE because on some corner cases it allow to avoid completely the None constant from code.co_consts and reduce the stack size.

I'm not sure that I want to start taking the same road of WPython which added a *lot* of specialized instructions (combining two or more existing instructions). As you said, it has a cost on the maintenance, and might have a negative impact if _PyEval_EvalFrameDefault() becomes too big.

History
Date	User	Action	Args
2016-11-25 14:08:21	vstinner	set	recipients: + vstinner, rhettinger, serhiy.storchaka, matrixise
2016-11-25 14:08:21	vstinner	set	messageid: <1480082901.4.0.232296609913.issue28800@psf.upfronthosting.co.za>
2016-11-25 14:08:21	vstinner	link	issue28800 messages
2016-11-25 14:08:21	vstinner	create