1746335 - [meta] Support LoongArch64 on Linux

Status: UNCONFIRMED

(Core :: General, task, P5)

Description

[Zhao Jiazhong]

LoongArch is a new RISC ISA developed by Loongson Technology, and some related documents could be found at here.

Comment 1

[Steven DeTar [:sdetar]]

Moving this bug to the Core:JavaScript Engine

Comment 2

[C.M.Chang[:chunmin]]

Hi, do you happen to know if there is an ongoing plan to port Firefox to the Loongson architecture? (community work probably?)

In bug 1769242, I find libvpx has added some optimization codes for Loongson but Firefox doesn't build libvpx for Loongson. It's reasonable to exclude those code since Firefox doesn't use it at all. However, if there is an ongoing work to port Firefox to Loongson, we might be able to accommodate it.

Comment 3

[Zhao Jiazhong]

(In reply to C.M.Chang[:chunmin] from comment #2)

Hi, do you happen to know if there is an ongoing plan to port Firefox to the Loongson architecture? (community work probably?)

In bug 1769242, I find libvpx has added some optimization codes for Loongson but Firefox doesn't build libvpx for Loongson. It's reasonable to exclude those code since Firefox doesn't use it at all. However, if there is an ongoing work to port Firefox to Loongson, we might be able to accommodate it.

Hi, thanks for your information. We are planning to port Firefox to LoongArch64 platform, and I think we may upstream it in the near future. So it would be great if the LoongArch codes are kept. Thanks!

Comment 4

[Zhao Jiazhong]

FWIW, bug 1864000 bumped vendored rust nix crate to 0.27.1 version, which has added loongarch support.
And now we can build firefox browser for loongarch64 platform without additional patch, although there may be some features are not ported yet.