Jolt: Update to commit f094082aa, adding RISC-V, PPC64 and LoongArch support

[akien-mga]

Fixes #100557.

[hpvb]

Jolt supports rv32 and rv64 as of jrouwe/JoltPhysics#1400 we should note that and when we update Jolt update this list of archs. It'd be nice to support these as our friendly neighborhood open source cpu arch :)

[akien-mga]

I backported JoltPhysics#1400 to add RISC-V support, so now this PR only disables the module for ppc32/ppc64/loongarch64.

[mihe]

I backported JoltPhysics#1400 to add RISC-V support

Any reason why we wouldn't just update Jolt as a whole instead? The currently pinned version is largely just an arbitrary commit from Jolt's master branch, so isn't tied to any point release or anything like that.

[akien-mga]

I backported JoltPhysics#1400 to add RISC-V support

Any reason why we wouldn't just update Jolt as a whole instead? The currently pinned version is largely just an arbitrary commit from Jolt's master branch, so isn't tied to any point release or anything like that.

Yeah we can do that too, I just haven't evaluated whether there's been any other upstream changes that might be a bit risky to use in production. Usually we prefer to stick to tagged releases but I see we're already on a dev commit so we might as well update further.

[mihe]

Might be good to bump it by one more commit, to jrouwe/JoltPhysics@27559da, just in case anyone runs into problems with the MSVC warning mentioned in jrouwe/JoltPhysics#1402.

[akien-mga]

Yeah, and I see jrouwe/JoltPhysics#1377 was reopened so I was thinking of waiting for that one to be merged too to sync.

[jrouwe]

Yes, please give me a couple of days. I'll get PPC and LoongArch support in there too. I'll ping this thread when it's done.

[akien-mga]

Sounds good! No rush from our side, this is still a mostly theoretical ask and nothing urgent to solve.

[jrouwe]

PowerPC support has been merged, only Little Endian mode works atm. Big Endian compiles but fails the unit tests.

[jrouwe]

LoongArch support has also been added to Jolt.

I think this PR can now be updated to the latest version of Jolt and merged.

[akien-mga]

Amazing work, thanks a lot @jrouwe!

The PR was updated to simply update Jolt Physics to jrouwe/JoltPhysics@f094082.

We're still disabling the Jolt module for ppc32, which we apparently support compiling for otherwise... but that one is really a candidate for dropping support for, given that we're even wondering whether to keep x86_32...

[mihe]

Looks good to me!

[jrouwe]

Was wondering why ppc32 was excluded, but I see now that it doesn't support 8 byte atomics, so this is indeed the best we can do.