[compiler-rt] [libcxx] [mlir] [llvm] [clang] [openmp] [lld] [libcxxabi] [runtimes] Use LLVM libunwind from libc++abi by default (PR #77687)

[Vitaly Buka via cfe-commits]

vitalybuka wrote:

> @vitalybuka This seems to have broken the ASAN and HWASAN builds here: https://lab.llvm.org/buildbot/#/builders/236/builds/8629/steps/8/logs/stdio https://lab.llvm.org/buildbot/#/builders/168/builds/17965/steps/8/logs/stdio
> 
> My understanding is that we'd now need to either explicitly say `LIBCXXABI_USE_LLVM_UNWINDER=OFF` or we'd need to change to `-DLLVM_ENABLE_RUNTIMES='libcxx;libcxxabi;libunwind'` [here in `buildbot_functions.sh`](https://github.com/llvm/llvm-zorg/blob/main/zorg/buildbot/builders/sanitizers/buildbot_functions.sh#L263).
> 
> Edit: See [llvm/llvm-zorg#96](https://github.com/llvm/llvm-zorg/pull/96)

Thanks for the patch, I will followup and recover buildbots



https://github.com/llvm/llvm-project/pull/77687