Re: [gomp4] Generate sequential loop for OpenACC loop directive inside kernels

[Tom de Vries]

On 16/06/15 10:59, Chung-Lin Tang wrote:

This patch adjusts omp-low.c:expand_omp_for_generic() to expand to a 
"sequential"
loop form (without the OMP runtime calls), used for loop directives inside
OpenACC kernels constructs. Tom mentions that this allows the kernels 
parallelization
to work when '#pragma acc loop' makes the front-ends create OMP_FOR, which the
loop analysis phases don't understand.

Tested and committed to gomp-4_0-branch.

Hi Chung-Lin,

can you commit a test-case to exercise the code?

Thanks,
- Tom

Chung-Lin

2015-06-16  Chung-Lin Tang  <clt...@codesourcery.com>

         * omp-low.c (struct omp_region): Add inside_kernels_p field.
         (expand_omp_for_generic): Adjust to generate a 'sequential' loop
         when GOMP builtin arguments are BUILT_IN_NONE.
         (expand_omp_for): Use expand_omp_for_generic() to generate a
         non-parallelized loop for OMP_FORs inside OpenACC kernels regions.
         (expand_omp): Mark inside_kernels_p field true for regions
         nested inside OpenACC kernels constructs.