[clang] [llvm] [Instrumentor] A configurable instrumentation pass plugin (PR #151551)

[Stefan Gränitz via llvm-commits]

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+//===-- Instrumentor.cpp - Highly configurable instrumentation pass -------===//
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weliveindetail wrote:

Yes, we need tool-like plugin to get test coverage for subprojects and packagers. I guess there are users, but I don't know for sure. It was [presented on EuroLLVM](https://www.youtube.com/watch?v=-BU_pGuiMZc) with the idea to hardcode it as a default-disabled pass. I think it's a great fit for a plugin that lives upstream. @jdoerfert @kevinsala What do you think?

https://github.com/llvm/llvm-project/pull/151551