[llvm-dev] Instrumenting IR being transformed for debugging

[Vaivaswatha Nagaraj via llvm-dev]

Hi,

Is there a simple way to insert printf calls into the IR to print an LLVM
Value at run time?
I am looking for something like TraceValues
<https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_15/lib/Transforms/Instrumentation/TraceValues.cpp>
that has long been deprecated.

Such a utility would be useful when writing/debugging transformation
passes. To see if a Value contains the *value* we expect it to at run time,
we could add a call to printf, that prints the value.
Would writing such a utility be useful to the community?

Thanks,

  - Vaivaswatha
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