GNU bug report logs - #44238
28.0.50; [feature/native-comp] Build trampolines for FULL_AOT builds

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Package: emacs; Reported by: Andrew Whatson <whatson@HIDDEN>; dated Mon, 26 Oct 2020 12:22:01 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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From: Andrea Corallo <akrl@HIDDEN>
To: Andrew Whatson <whatson@HIDDEN>
Subject: Re: bug#44238: 28.0.50; [feature/native-comp] Build trampolines for
 FULL_AOT builds
References: <CAPE069f4CRAD7L0UzOPjMR+mLebetqKOgG45JC51_GyCONuUrA@HIDDEN>
Date: Mon, 26 Oct 2020 13:40:48 +0000
In-Reply-To: <CAPE069f4CRAD7L0UzOPjMR+mLebetqKOgG45JC51_GyCONuUrA@HIDDEN>
 (Andrew Whatson's message of "Mon, 26 Oct 2020 22:20:51 +1000")
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Andrew Whatson <whatson@HIDDEN> writes:

> Hi Andrea,
>
> In the spirit of pre-compiling as much as possible, would it make
> sense to pre-compile all the trampolines when preparing a FULL_AOT
> build?

Hi Andrew,

IMO is not worth compiling almost 1500 files for really using just a few
of them.  Also the compilation is realtivelly quick (~0.2s each on my
machine), I guess the most is GCC/GAS startup time.  Indeed this time is
payed only once when the primitive is redefined the first time.

That said if you want to experiment I think something like this should
do the job:

(mapatoms (=CE=BB (s)=20=20=20=20
            (when (subr-primitive-p (symbol-function s))
              (comp-trampoline-compile s))))

Ciao!

  Andrea




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#44238; Package emacs. Full text available.

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Date: Mon, 26 Oct 2020 22:20:51 +1000
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Subject: 28.0.50; [feature/native-comp] Build trampolines for FULL_AOT builds
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Hi Andrea,

In the spirit of pre-compiling as much as possible, would it make
sense to pre-compile all the trampolines when preparing a FULL_AOT
build?

Cheers,
Andrew




Acknowledgement sent to Andrew Whatson <whatson@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#44238; Package emacs. Full text available.
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Last modified: Mon, 26 Oct 2020 13:45:01 UTC

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