https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94841
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=94788,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=93956,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=93114
Status|WAITING |RESOLVED
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> Probably the mentioned inefficiency but the fix was a correctness one.
I had to revert the patch because fixing one correctness issue introduced
another one (PR 94788).
> Needs a testcase, fortran folks do not have access to SPEC and the question
> is whether the inefficiency can be fixed for the problematical case(s).
In this particular case, the cause of the inefficiency is clear - creating
a temporary because it is not kown if a pointer returned from a
procedure has a span or not. And if we don't know, we need to do something
about that, such as creating a temporary.
We need to revisit this whole thing for gcc 11, also for PR 93114.
I have some ideas already. Marking this as fixed in the meantime.
