[llvm-dev] How to run single compiler-rt test in monorepo?

[Vitaly Buka via llvm-dev]

I usually run single tests (compiler-rt and LLVM) as
LIT_FILTER=<testname> ninja check-<component>

On Thu, Oct 31, 2019 at 3:33 PM Johan Engelen via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hello all,
>   I am having trouble running only a single lit-based test of compiler-rt.
> My folder structure is: inside the llvm monorepo checkout, I have a dir
> "build" with subdir "buildtrunk". I ran cmake inside "buildtrunk" and also
> run ninja from there.
>
> For LLVM I can do the following:
> > cd build/buildtrunk/test
> > ../bin/llvm-lit  --show-tests .
> And it shows all tests discovered of the llvm main library, but not tests
> of for example clang or compiler-rt.
> Running a single test works aswell:
> > ../bin/llvm-lit -v tools/yaml2obj/versym-section.yaml
> -- Testing: 1 tests, 1 workers --
> PASS: LLVM :: tools/yaml2obj/versym-section.yaml (1 of 1)
> ...
>
> However whatever I try, I have not succeeded in having Lit discover the
> compiler-rt tests, and I didn't manage to run just one compiler-rt test.
> Information online is sparse, and I didn't find it there either.
>
> What is are command / How do I run a single lit-based compiler-rt test?
>
> Thanks a lot,
>   Johan
>
>
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