On 29/05/15 18:23, Bernd Schmidt wrote:
> When predicating the code for OpenACC, we should avoid the entry block
> in an offloaded region, which contains setup code that should be run in
> every thread. The following patch adds a new marker statement that is
> used to identify this block. Currently, predication doesn't happen
> anyway due to an oversight in the algorithm, but I'll be fixing that in
> a followup patch.
>
> Committed on gomp-4_0-branch.
>

Hi Bernd,

this causes an ICE in kernels-eternal.c.

The GIMPLE_OMP_ENTRY_END is removed the first time (!ssa) we call 
expand_omp_target. The second time we call expand_omp_target (ssa), it's 
no longer there, and we call 'gimple_code (NULL)' here:
...
   basic_block entry_succ_bb = single_succ (entry_bb);
   gsi = gsi_last_bb (entry_succ_bb);
   if (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_ENTRY_END)
     gsi_remove (&gsi, true);
...

This patch fixes that by not attempting to remove GIMPLE_OMP_ENTRY_END 
when in ssa.

Committed to gomp-4_0-branch.

Thanks,
- Tom