[llvm] Attributor: Add -light options to -attributor-enable flag (PR #179346)

[Zibi Sarbinowski via llvm-commits]

zibi2 wrote:

The new lit created here fails on PowerPPC right on the first `RUN` command with the following message:
`Could not parse dumped pass pipeline: unknown function pass ''`
Have you seen similar failure on other platforms?

https://github.com/llvm/llvm-project/pull/179346