[clang] [lld] [llvm] [lld][llvm/mc] Add support for sdata8 for FDE CIE (PR #174508)

[Farid Zakaria via cfe-commits]

fzakaria wrote:

Current failure:
```
sccache: Starting the server...
sccache: error: Timed out waiting for server startup
```

https://github.com/llvm/llvm-project/pull/174508