[gomp4, committed] expand oacc kernels region at same time as oacc parallel region

[Tom de Vries]

Hi,

now that we have committed -foffload-alias in gomp-4_0-branch ( 
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00214.html ), we no longer 
need the kernels region to be a part of the original function when doing 
alias analysis.

So, we no longer have the need to postpone splitting off the kernels 
region into a seperate function until after alias analysis, but we can 
do this at the same time as when we expand the parallel region.

The following patch series implements that:

     1  Move expansion of kernels region back to first omp-expand
     2  Update gate_oacc_kernels to handle oacc function
     3  Revert "Add skip_stmt parm to pass_dominator::get_sese ()"
     4  Revert "Add pass_dominator::sese_mode_p ()"
     5  Handle oacc function in parloops
     6  Update goacc kernels C testcases
     7  Update goacc kernels Fortran testcases
     8  Release_defs in expand_omp_atomic_fetch_op
     9  Remove BUILT_IN_GOACC_KERNELS_INTERNAL

[ The patch series is broken up into logical bits, but intended as 
single commit. Various things in kernels support will be broken in 
intermediate stages. ]

Committed to gomp-4_0-branch.

I'll post the patches in reply to this message.

Thanks,
- Tom