Message 298960 - Python tracker

Message298960

Author	pitrou
Recipients	Demur Rumed, Mark.Shannon, benjamin.peterson, christian.heimes, mark.dickinson, nascheme, pitrou, rhettinger, serhiy.storchaka, trent
Date	2017-07-24.11:47:57
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1500896877.44.0.990651761664.issue17611@psf.upfronthosting.co.za>
In-reply-to

Content
> I don't like the new END_ITER instruction. This complicates (and slows down) the evaluation loop and the peepholer. I don't think it slows down anything in the eval loop. I agree it adds a bit of complexity. > This also adds a limitation on the peepholer (END_ITER can't be optimized out). It's an unconditional backedge, how could you optimize it?

Content

> I don't like the new END_ITER instruction. This complicates (and slows down) the evaluation loop and the peepholer.

I don't think it slows down anything in the eval loop.  I agree it adds a bit of complexity.

> This also adds a limitation on the peepholer (END_ITER can't be optimized out).

It's an unconditional backedge, how could you optimize it?

History
Date	User	Action	Args
2017-07-24 11:47:57	pitrou	set	recipients: + pitrou, nascheme, rhettinger, mark.dickinson, christian.heimes, benjamin.peterson, trent, Mark.Shannon, serhiy.storchaka, Demur Rumed
2017-07-24 11:47:57	pitrou	set	messageid: <1500896877.44.0.990651761664.issue17611@psf.upfronthosting.co.za>
2017-07-24 11:47:57	pitrou	link	issue17611 messages
2017-07-24 11:47:57	pitrou	create