Created attachment 563166 [details] build log with --enable-rust-simd Since pgo was enabled for 65, I did some digging about simd. How about enabling --enable-rust-simd for 64bit builds, at least on amd64, or maybe put it behind new useflag or existing custom-optimizations? upstream enables it by default for their builds https://github.com/mozilla/gecko-dev/commit/9c23847d055a763f21b2867f1014f66c10ade78e ubuntu also enables it by default starting with ff65. https://launchpad.net/ubuntu/+source/firefox/65.0+build2-0ubuntu1 passing something like mozconfig_annotate '' --enable-rust-simd; should do the trick, rust feature will be activated /usr/bin/cargo rustc --release --frozen --manifest-path /tmp/portage/www-client/firefox-65.0/work/firefox-65.0/toolkit/library/rust/Cargo.toml --color=always --lib --target=x86_64-unknown-linux-gnu --features "servo bindgen quantum_render >>simd-accel<< cubeb-remoting moz_memory gecko_profiler"
Will be enabled (except on i386 and armhf).
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=07afc9622a4dcc374a188a2627b28f3d2efea648 commit 07afc9622a4dcc374a188a2627b28f3d2efea648 Author: Thomas Deutschmann <whissi@gentoo.org> AuthorDate: 2019-01-29 08:14:16 +0000 Commit: Thomas Deutschmann <whissi@gentoo.org> CommitDate: 2019-01-29 08:14:31 +0000 www-client/firefox: enable --enable-rust-simd Closes: https://bugs.gentoo.org/676696 Package-Manager: Portage-2.3.58, Repoman-2.3.12 Signed-off-by: Thomas Deutschmann <whissi@gentoo.org> www-client/firefox/firefox-65.0.ebuild | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
