I read somewhere that fixing the graph register allocator would be a good project so I thought I'd look into it. I couldn't find any tickets about it on Trac though so I was poking around for tests to see what (if anything) was wrong with it. After I sent that last email I googled around for how to write ghc unit tests and this https://mail.haskell.org/pipermail/ghc-devs/2014-January/003916.html is the only thing I found. Is it not possible to unit test GHC? If not are there plans/discussions about this? I think it'd help document the code base if nothing else and it'd be a good way to get my feet wet. On 10/11/2016 02:13 PM, Ben Gamari wrote:

Thomas Jakway writes:

...

Can anyone point me to the register allocator tests (especially for the graph register allocator)? Can't seem to find them and grepping doesn't turn up much (pretty much just testsuite/tests/codeGen/should_run/cgrun028.h).

What sort of tests are you looking for in particular? I'm afraid all we have are regression tests covering the code generator as a whole.

Cheers,

- Ben

Ah okay, thanks! On Oct 11, 2016 8:25 PM, "Ömer Sinan Ağacan" wrote:

...

Is it not possible to unit test GHC?

You need to export functions you want to test, and then write a program that tests those functions using the `ghc` package.

See https://github.com/ghc/ghc/blob/master/testsuite/tests/ unboxedsums/unboxedsums_unit_tests.hs for an example.

2016-10-11 17:50 GMT-04:00 Thomas Jakway :

...

I read somewhere that fixing the graph register allocator would be a good project so I thought I'd look into it. I couldn't find any tickets about it on Trac though so I was poking around for tests to see what (if anything) was wrong with it.

After I sent that last email I googled around for how to write ghc unit tests and this https://mail.haskell.org/pipermail/ghc-devs/2014-January/003916.html is the only thing I found. Is it not possible to unit test GHC? If not are there plans/discussions about this? I think it'd help document the code base if nothing else and it'd be a good way to get my feet wet. On 10/11/2016 02:13 PM, Ben Gamari wrote:

Thomas Jakway writes:

Can anyone point me to the register allocator tests (especially for the graph register allocator)? Can't seem to find them and grepping doesn't turn up much (pretty much just testsuite/tests/codeGen/should_run/cgrun028.h).

What sort of tests are you looking for in particular? I'm afraid all we have are regression tests covering the code generator as a whole.

Cheers,

- Ben

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