On 10/16/2017 12:53 AM, Richard Biener wrote:
On October 16, 2017 7:38:50 AM GMT+02:00, Sandra Loosemore
<san...@codesourcery.com> wrote:
This patch is a first cut at solving the problem discussed in this
thread
https://gcc.gnu.org/ml/gcc/2017-10/msg00016.html
where I have some nios2 backend patches in my queue that need a way of
knowing whether the split1 pass has run yet. There seemed to be
agreement that a general way to query the pass manager for this
information would be useful.
[snip]
I missed the post of why you need to know this. But as you noticed we're using
reload_completed for similar purpose. There's also the possibility of
setting/adding a pass property that split could provide and which you could
query. We're using this to signal the various different lowering stages in
GIMPLE for example.
See the thread linked above. There was interest in a general mechanism
to query the pass manager state instead of adding the bookkeeping to the
nios2 backend or adding something to track the split1 pass to the
target-independent parts of the compiler. After fiddling with it,
though, I'm not sure this is an improvement.
Maybe it would help the discussion if I got my nios2 patch set posted so
that everybody could see the actual use case? It'll take me a few days
to finish cleaning it up.
-Sandra
