[clang] [llvm] [RemoveDIs] Print IR with debug records by default (PR #91724)

[Stephen Tozer via llvm-commits]

SLTozer wrote:

> There's one part I did not fully understand. How did you identify the "pre-script fixups"? What's the importance of those changes? I did not seen any mention of that in your PR description.

Good question, I'll add my answer to the main description: The pre-script fixups were determined post-script; so I ran the script, looked at the tests that still failed, and examined why - in most cases this isn't hard, because the problem `CHECK` is the one that fails the test. The pre-script fixups change existing patterns so that the script can handle them correctly, while the post-script fixups cover cases that the script can't fix or otherwise mishandles. In both cases we need to run the script first to identify the problems and manually fixup the check lines, and for a downstream user it _may_ be easier to skip the pre-script stuff and just fix all broken checks manually after the script makes its best effort; my splitting of the pre-script modifications was more to ensure that as much of this review is automated as possible, rather than a necessary step.

https://github.com/llvm/llvm-project/pull/91724