[8.0.0 Release] Release Candidate 1 source, docs, and binaries available

Project Infrastructure Release Testers
1

Hello everyone,

Source, docs, and binaries for LLVM-8.0.0-rc1 are now available at
https://prereleases.llvm.org/8.0.0/#rc1

Please try it out and report any problems as bugs marked as blockers
of https://llvm.org/pr40331

Thanks,
Hans