This patch series add support for unified shared memory (USM) and pinned
memory. The support in libgomp is for nvptx offloading only. A new
command line option -foffload-memory allows user to choose either USM
or pinned memory. The USM can also be enabled using requires construct.
When USM us in use, calls to memory allocation function like malloc are
changed to omp_alloc with appropriate allocator. No transformations are
required for the pinned memory which is implemented using mlockall so is
only available on Linux.
Andrew Stubbs (4):
openmp: Add -foffload-memory
openmp: allow requires unified_shared_memory
openmp, nvptx: ompx_unified_shared_mem_alloc
openmp: -foffload-memory=pinned
Hafiz Abid Qadeer (1):
openmp: Use libgomp memory allocation functions with unified shared
memory.
gcc/c/c-parser.cc | 13 +-
gcc/common.opt | 16 ++
gcc/coretypes.h | 7 +
gcc/cp/parser.cc | 13 +-
gcc/doc/invoke.texi | 16 +-
gcc/fortran/openmp.cc | 10 +-
gcc/omp-low.cc | 220 ++++++++++++++++++
gcc/passes.def | 1 +
.../c-c++-common/gomp/alloc-pinned-1.c | 28 +++
gcc/testsuite/c-c++-common/gomp/usm-1.c | 4 +
gcc/testsuite/c-c++-common/gomp/usm-2.c | 34 +++
gcc/testsuite/c-c++-common/gomp/usm-3.c | 32 +++
gcc/testsuite/g++.dg/gomp/usm-1.C | 32 +++
gcc/testsuite/g++.dg/gomp/usm-2.C | 30 +++
gcc/testsuite/g++.dg/gomp/usm-3.C | 38 +++
gcc/testsuite/gfortran.dg/gomp/usm-1.f90 | 6 +
gcc/testsuite/gfortran.dg/gomp/usm-2.f90 | 16 ++
gcc/testsuite/gfortran.dg/gomp/usm-3.f90 | 13 ++
gcc/tree-pass.h | 1 +
libgomp/allocator.c | 13 +-
libgomp/config/linux/allocator.c | 70 ++++--
libgomp/config/nvptx/allocator.c | 6 +
libgomp/libgomp-plugin.h | 3 +
libgomp/libgomp.h | 6 +
libgomp/libgomp.map | 5 +
libgomp/omp.h.in | 4 +
libgomp/omp_lib.f90.in | 8 +
libgomp/plugin/plugin-nvptx.c | 45 +++-
libgomp/target.c | 70 ++++++
libgomp/testsuite/libgomp.c++/usm-1.C | 54 +++++
libgomp/testsuite/libgomp.c/alloc-pinned-7.c | 66 ++++++
libgomp/testsuite/libgomp.c/usm-1.c | 24 ++
libgomp/testsuite/libgomp.c/usm-2.c | 32 +++
libgomp/testsuite/libgomp.c/usm-3.c | 35 +++
libgomp/testsuite/libgomp.c/usm-4.c | 36 +++
libgomp/testsuite/libgomp.c/usm-5.c | 28 +++
libgomp/testsuite/libgomp.c/usm-6.c | 70 ++++++
37 files changed, 1075 insertions(+), 30 deletions(-)
create mode 100644 gcc/testsuite/c-c++-common/gomp/alloc-pinned-1.c
create mode 100644 gcc/testsuite/c-c++-common/gomp/usm-1.c
create mode 100644 gcc/testsuite/c-c++-common/gomp/usm-2.c
create mode 100644 gcc/testsuite/c-c++-common/gomp/usm-3.c
create mode 100644 gcc/testsuite/g++.dg/gomp/usm-1.C
create mode 100644 gcc/testsuite/g++.dg/gomp/usm-2.C
create mode 100644 gcc/testsuite/g++.dg/gomp/usm-3.C
create mode 100644 gcc/testsuite/gfortran.dg/gomp/usm-1.f90
create mode 100644 gcc/testsuite/gfortran.dg/gomp/usm-2.f90
create mode 100644 gcc/testsuite/gfortran.dg/gomp/usm-3.f90
create mode 100644 libgomp/testsuite/libgomp.c++/usm-1.C
create mode 100644 libgomp/testsuite/libgomp.c/alloc-pinned-7.c
create mode 100644 libgomp/testsuite/libgomp.c/usm-1.c
create mode 100644 libgomp/testsuite/libgomp.c/usm-2.c
create mode 100644 libgomp/testsuite/libgomp.c/usm-3.c
create mode 100644 libgomp/testsuite/libgomp.c/usm-4.c
create mode 100644 libgomp/testsuite/libgomp.c/usm-5.c
create mode 100644 libgomp/testsuite/libgomp.c/usm-6.c
--
2.25.1
