[llvm-dev] Testing End-To-End Functionality of Specific Optimization

[Nemanja Ivanovic via llvm-dev]

I am far from an expert on this since I've only ever added one or two of
these IIRC. But as far as I remember, for most purposes, that's all you
need. Add a source file, add an expected file and add the source file to
the CMakeLists.txt (along with any additional CFLAGS/CXXFLAGS/LDFLAGS)...
Of course, if you need anything custom, there are likely examples in the
test suite that you can use for guidance.
Also, this may be of some help:
https://llvm.org/docs/TestSuiteMakefileGuide.html

On Tue, Jan 2, 2018 at 9:14 PM, Eli Davis <eli at aarno-labs.com> wrote:

> Ah, thank you, that makes sense.
>
> Is there any chance you can point me toward some documentation for how to
> add tests to the test-suite? I've found a fair bit on how to run the tests,
> but nothing on how to add new ones. Is it just as simple as adding
> testcase.c and testscase.reference_output in the appropriate directory?
>
> Thanks!
>
> On 01/02/2018 02:50 PM, Nemanja Ivanovic wrote:
>
> Typically the "end-to-end" test cases reside in `projects/test-suite`. All
> the test cases there build executable binaries from source, run those and
> compare the output (as well as the return code) to what's expected. You
> should probably put your test cases in there. Please note also that there
> are subcategories there - there are single source file and multiple source
> file programs. There are those that are meant as benchmarks, unit tests,
> full applications, etc. I'm sure you can find an appropriate place to add
> your test cases to.
>
> On Tue, Jan 2, 2018 at 8:16 PM, Eli Davis via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Hello!
>>
>> I am writing an instrumentation pass using LLVM. I have unit tests using
>> llvm-lit in the style of the tests in llvm/test to make sure the IR changes
>> show up in the correct place. I would also like to have some end-to-end
>> tests that start from a .c file, compile the program, run it, and check the
>> output.
>>
>> I imagine I could do this as a test in the same style, but I'm wondering
>> if that's the llvm-correct way of doing it. Can anyone advise?
>>
>> Thank you!
>>
>> Eli
>>
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>>
>
>
>
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