ISL tiling question (gcc.dg/graphite/interchange-3.c)

[Richard Biener]

On Fri, Jan 11, 2019 at 9:02 PM Steve Ellcey <sellcey@marvell.com> wrote:
>
> Someone here was asking about GCC, ISL, and tiling and we looked at
> the test gcc.dg/graphite/interchange-3.c on Aarch64.  When this
> test is run the graphite pass output file contains the string 'not
> tiled' and since the dg-final scan-tree-dump is just looking for
> the string 'tiled', it matches and the test passes.
>
> Is this intentional?  It seems like if we wanted to check that it was
> not tiled we sould grep for 'not tiled', not just 'tiled'.  If we
> want grep to see that it is tiled, then the check for tiling happening
> is wrong.

;)

I _think_ the testcases got annotated with "tiled" a lot and really
meant to test whether tiling would be possible (interchange tests
should check for interchange only).

I think this is probably not intentional but unless you want extra
FAILs I suggest to leave this alone...

Richard.

> Steve Ellcey
> sellcey@marvell.com
>