[llvm] [llvm-exegesis] Timeout if subprocess executor hangs (PR #132861)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

It's actually interesting that this test ran at all on your system. By default in tree you end up with a divide by zero error because the loop body is empty given the input is a snippet file pointing at `/dev/null` when running the feature detection.

I pushed e696f4e5008c21b8edee089fb80d4e2e0d998e20 to fix that.

https://github.com/llvm/llvm-project/pull/132861