On Tue, Aug 13, 2019 at 2:18 PM Lars Hansen <lhan...@mozilla.com> wrote: > Cranelift should be genuinely optional until further notice; to my > knownledge, no near-term product work in Firefox or SpiderMonkey depends on > Cranelift. Cranelift is present in Nightly but (so far as I can tell) not in > Release. It can be disabled in the JS shell by configuring with > --disable-cranelift, and I just tested that this works. To the extent there > is other Rust code in SpiderMonkey it should not, so far as I know, depend on > the presence of Cranelift. It also seems to me that we should be able to use > Rust in SpiderMonkey independently of whether Cranelift is there, so if that > does not work it ought to be fixed.
Thanks. That makes sense to me. The present state (now that https://bugzilla.mozilla.org/show_bug.cgi?id=1572364 has landed) is that when built as part of libxul, SpiderMonkey can use Rust code (jsrust_shared gets built) regardless of whether Cranelift is enabled. However, when SpiderMonkey is built outside libxul, SpiderMonkey can use Rust code (jsrust_shared gets built) only if Cranelift is enabled. I've filed https://bugzilla.mozilla.org/show_bug.cgi?id=1573098 to change that. (The actual addition of non-Cranelift Rust code of interest to jsrust_shared hasn't landed yet.) -- Henri Sivonen hsivo...@mozilla.com _______________________________________________ dev-platform mailing list email@example.com https://lists.mozilla.org/listinfo/dev-platform