[Bug tree-optimization/90591] Avoid unnecessary data transfer out of OMP construct

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90591

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |burnus at gcc dot gnu.org

--- Comment #4 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #1)
> We want to add some attribute(s) on the structure types used to pass
> information in and out (or in the fields), and have some specialized IPA
> optimization that tries to optimize such cases.

I concur - and had even today a hello-world example for the copy-in example:
 double x = 0.5;
 #pragma omp target
   printf("%f\n", sin(x);
could be compile-time optimized the sin() call to a constant but doesn't.