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

[Stephen Tozer via llvm-commits]

SLTozer wrote:

Rebased with support for `#dbg_label` added - only notable changes are in `AsmWriter.cpp`, where printDPLabel now does the right thing, and the dbg_label intrinsic having been added to `Module`'s "remove all debug intrinsics" function.

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