[llvm] [RemoveDIs] Print non-intrinsic debug info in textual IR output (PR #79281)

[Jeremy Morse via llvm-commits]

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+;; Test that we can write in the new debug info format.
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jmorse wrote:

Do we care about the whitespace indentation difference, and if so, do we need to pass `--strict-whitespace` to FileCheck?

https://github.com/llvm/llvm-project/pull/79281