Update to RR 5.7.0 - needed to support Intel Sapphire Rapids

[BioTurboNick]

[FATAL src/PerfCounters_x86.h:118:compute_cpu_microarch()] Intel CPU type 0x806f0 unknown

Trying to trace a segfault in LLVM on 1.9.3 on a Sapphire Rapids CPU, but RR was failing because it didn't support the CPU.

Looks like just-released RR 5.7.0 includes this support:
https://github.com/rr-debugger/rr/blame/7cf5a12dba5aaeea9efc5ad97176b07b5614e350/src/PerfCounters_x86.h#L89-L90

[BioTurboNick]

cc: @maleadt, looks like you've been doing the most recent RR bumps on Yggdrasil? Is this an easy thing to do, or will it require some work? And if so, how can I help?

[maleadt]

https://github.com/JuliaLang/rr/commits/release-5.6 would have to be rebased on top of master. The problem is that some of Keno's patches don't apply cleanly anymore on top of 5.7/master. I have the bare minimum in https://github.com/JuliaLang/rr/commits/tb/master (the XRC0 patch is so that we can replay traces from other processors), but there's also

• RFC: Add a mechanism to avoid including unnecessary files in the trace rr-debugger/rr#2529, which seems closed, so can we just drop that patch?
• JuliaLang/rr@17e0471 and JuliaLang/rr@2fb2a96, for which there aren't even PRs

Maybe @Keno can comment?

[BioTurboNick]

I think all that may be needed to support Sapphire Rapids is just this small PR: rr-debugger/rr#3513

At least it seems to work on my machine.

[maleadt]

OK, I can backport that. I'll wait for @Keno to chime in on the above patchlist before attempting an update to 5.7.