[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilati
From: |
Arash Esbati |
Subject: |
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation |
Date: |
Fri, 23 Jun 2023 14:50:51 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
Eli Zaretskii <eliz@gnu.org> writes:
> This might mean that the problem happens when byte-compiling *.el
> files -- in the tarball all the *.elc files are already present. What
> happens if you remove the *.elc files from the release tarball, and
> then try building it?
This is indeed the case: Removing the *.elc after unpacking the tarball
and running
./configure --with-native-compilation && make
doesn't build -- I will try ./configure --without-native-compilation
later.
> In a nutshell, it bloats the code (due to excessive inlining), with no
> real effect on speed. The inner loops in Emacs are very large, and
> thus the techniques used by -O3 to speed up code (loop unrolling etc.)
> don't really work. Moreover, they could make things worse because the
> larger loops might no longer fit into the L1 cache of the CPU.
>
> The -O3 is well suited to speed up relatively simple algorithms with
> tight loops. Emacs has very few of those, in the places that matter
> for observable performance.
Thanks! I will go with -O2 in future.
Best, Arash
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, (continued)
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Arash Esbati, 2023/06/08
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Cyril Arnould, 2023/06/16
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Arash Esbati, 2023/06/22
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/23
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Arash Esbati, 2023/06/23
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/23
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation,
Arash Esbati <=
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Deus Max, 2023/06/24
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/24
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Deus Max, 2023/06/24
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/24
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Andrea Corallo, 2023/06/25
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/25
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Andrea Corallo, 2023/06/25
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/25
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Andrea Corallo, 2023/06/26
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Cyril Arnould, 2023/06/17