[llvm] [RemoveDIs] Load into new debug info format by default in LLVM (PR #89799)

[Orlando Cazalet-Hyams via llvm-commits]

OCHyams wrote:

The verification errors look very unrelated to DbgRecords, which makes me think that maybe there's some bitcode incompatibility happening here (i.e., new bitcode records being misinterpreted or something).

@aeubanks, this is possibly a long shot, are you able to confirm the version of lld that is used to link the `stage 2` build is the `stage 1` lld?

There was an issue on one of the bots when we first added the new bitcode representation where the `system` lld was used to link both `stage 1` and `stage 2`, which doesn't work because the `stage 1` compiler produced new bitcode that the `system` lld didn't understand: https://github.com/llvm/llvm-zorg/pull/139.

https://github.com/llvm/llvm-project/pull/89799