Register Allocator Tests

Ömer Sinan Ağacan omeragacan at
Wed Oct 12 00:25:15 UTC 2016

> 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.

for an example.

2016-10-11 17:50 GMT-04:00 Thomas Jakway <tjakway at>:

> 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
> <> 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 <tjakway at> <tjakway at> 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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