GNU bug report logs - #35321
[PATCH] * src/bytecode.c (exec_byte_code) Unroll Blist3 and Blist4

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Package: emacs;

Reported by: Alex Gramiak <agrambot <at> gmail.com>

Date: Fri, 19 Apr 2019 14:42:01 UTC

Severity: wishlist

Tags: fixed, patch

Fixed in version 27.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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Message #11 received at 35321 <at> debbugs.gnu.org (full text, mbox):

From: Alex Gramiak <agrambot <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 35321 <at> debbugs.gnu.org
Subject: Re: bug#35321: [PATCH] * src/bytecode.c (exec_byte_code) Unroll
 Blist3 and Blist4
Date: Fri, 19 Apr 2019 14:30:03 -0600
Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Alex Gramiak <agrambot <at> gmail.com>
>> Date: Fri, 19 Apr 2019 08:41:43 -0600
>> 
>> Hopefully someone with experience in the byte compiler can affirm that
>> this is okay. It passes make check for me (outside of 1 flymake error
>> that occurs in master as well).
>
> Does this produce any tangible performance gains?

It seems to be within error. I was just in the byte compiler recently
and saw that Blist3/4 don't use list3/4 like Blist2 uses list2. If
you're worried about touching older code for little gain, then I guess
it's safer to leave it alone.




This bug report was last modified 6 years and 25 days ago.

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