This series contains updated parts of the patch series that was previously sent upstream in November 2019:
https://gcc.gnu.org/pipermail/gcc-patches/2019-November/534547.html The purpose of the series is to enable multiple workers for OpenACC (workers being one of the dimensions of parallelism supported by the standard) on targets such as AMD GCN. (NVPTX uses its own scheme for supporting multiple workers, implemented mostly in the backend.) Tested with offloading to AMD GCN and (separately) to NVPTX. Further commentary is provided alongside individual patches. I'm posting these patches for review now, but I don't expect to commit them until stage 1. Thanks, Julian Julian Brown (4): openacc: Middle-end worker-partitioning support openacc: Fix async bugs in several OpenACC test cases amdgcn: Enable OpenACC worker partitioning for AMD GCN openacc: Reference-typed reduction and private variable rewriting gcc/Makefile.in | 1 + gcc/config/gcn/gcn-protos.h | 2 +- gcc/config/gcn/gcn-tree.c | 6 +- gcc/config/gcn/gcn.c | 23 +- gcc/config/gcn/gcn.opt | 5 - gcc/doc/tm.texi | 10 + gcc/doc/tm.texi.in | 4 + gcc/gimplify.c | 117 ++ gcc/oacc-neuter-bcast.c | 1471 +++++++++++++++++ gcc/oacc-neuter-bcast.h | 26 + gcc/omp-builtins.def | 8 + gcc/omp-low.c | 47 +- gcc/omp-offload.c | 159 +- gcc/omp-offload.h | 1 + gcc/passes.def | 2 + gcc/target.def | 13 + gcc/targhooks.h | 1 + .../goacc/classify-kernels-unparallelized.c | 8 +- .../c-c++-common/goacc/classify-kernels.c | 8 +- .../c-c++-common/goacc/classify-parallel.c | 8 +- .../c-c++-common/goacc/classify-routine.c | 8 +- .../c-c++-common/goacc/classify-serial.c | 8 +- .../gcc.dg/goacc/loop-processing-1.c | 2 +- .../goacc/classify-kernels-unparallelized.f95 | 8 +- .../gfortran.dg/goacc/classify-kernels.f95 | 8 +- .../gfortran.dg/goacc/classify-parallel.f95 | 8 +- .../gfortran.dg/goacc/classify-routine.f95 | 8 +- .../gfortran.dg/goacc/classify-serial.f95 | 8 +- gcc/tree-core.h | 4 +- gcc/tree-pass.h | 2 + gcc/tree.c | 11 +- gcc/tree.h | 2 + libgomp/plugin/plugin-gcn.c | 4 +- .../libgomp.oacc-c++/privatized-ref-2.C | 64 + .../libgomp.oacc-c++/privatized-ref-3.C | 64 + .../libgomp.oacc-c-c++-common/deep-copy-10.c | 14 +- .../loop-dim-default.c | 11 +- .../libgomp.oacc-c-c++-common/parallel-dims.c | 13 +- .../libgomp.oacc-fortran/lib-16-2.f90 | 5 + .../testsuite/libgomp.oacc-fortran/lib-16.f90 | 5 + .../libgomp.oacc-fortran/parallel-dims-aux.c | 9 +- .../libgomp.oacc-fortran/privatized-ref-1.f95 | 71 + 42 files changed, 2112 insertions(+), 145 deletions(-) create mode 100644 gcc/oacc-neuter-bcast.c create mode 100644 gcc/oacc-neuter-bcast.h create mode 100644 libgomp/testsuite/libgomp.oacc-c++/privatized-ref-2.C create mode 100644 libgomp/testsuite/libgomp.oacc-c++/privatized-ref-3.C create mode 100644 libgomp/testsuite/libgomp.oacc-fortran/privatized-ref-1.f95 -- 2.29.2
