[PATCH] D54187: Add debuginfo-tests that use cdb on Windows

Adrian Prantl via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Wed Nov 7 08:22:16 PST 2018

aprantl added a comment.

> I think the only way to realistically make this work for all platforms would be to separate the source file from the input/output. The source file would be the test case, and if you wanted to support a different debugger you would need to supply a different input/output file..

I don't necessarily agree with that statement. The debuginfo-tests use only a very small subset of debugger functionality that includes

- setting breakpoints
- printing the value of integer variables
- continuing to the next breakpoint

I'm genuinely curious what is so different about the Windows debugger that it couldn't be wrapped in a translation layer like `llgdb.py` that abstracts these three operations. This would cover a large set of the existing tests. I'm fine with having a few extra tests that test something that only works on a specific platform here and there, but I really don't want us to grow separate platform-specific testsuites. Inevitably, someone working on platform A will fix a general bug in LLVM and then only add a test for platform A and that's bad for everyone. What I'm trying to avoid is a situation like the debug info tests in LLVM that are almost entirely x86-specific, even if they are testing stuff that happens at the IR level.


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