[0/3] OpenMP 5.0: Strided updates and array shape-operator support (C++)

  This series implements support for the "array shape-operator" (OpenMP
5.0, 2.1.4) and strided accesses for update operations. It follows on
from the in-review series:

  https://gcc.gnu.org/pipermail/gcc-patches/2022-December/609031.html

and makes use of some of the infrastructure introduced in those patches.

Further comments on individual patches. Tested with offloading to NVPTX.

OK (for stage 1)?

Thanks,

Julian

Julian Brown (3):
  OpenMP: Fix "exit data" for array sections for ref-to-ptr components
  OpenMP: Allow complete replacement of clause during map/to/from
    expansion
  OpenMP: Support strided and shaped-array updates for C++

 gcc/c-family/c-common.h                       |  12 +-
 gcc/c-family/c-omp.cc                         | 277 ++++++++---
 gcc/c-family/c-pretty-print.cc                |   5 +
 gcc/c/c-parser.cc                             |  32 +-
 gcc/c/c-tree.h                                |   2 +-
 gcc/c/c-typeck.cc                             |  58 ++-
 gcc/cp/cp-objcp-common.cc                     |   1 +
 gcc/cp/cp-tree.def                            |   1 +
 gcc/cp/cp-tree.h                              |  13 +-
 gcc/cp/decl.cc                                |  75 +++
 gcc/cp/decl2.cc                               |  19 +-
 gcc/cp/error.cc                               |   5 +
 gcc/cp/mangle.cc                              |   1 +
 gcc/cp/operators.def                          |   1 +
 gcc/cp/parser.cc                              | 303 ++++++++++-
 gcc/cp/parser.h                               |   7 +
 gcc/cp/pt.cc                                  |  39 +-
 gcc/cp/semantics.cc                           | 288 +++++++++--
 gcc/cp/typeck.cc                              |  12 +-
 gcc/gimplify.cc                               |  74 ++-
 gcc/omp-general.cc                            |  47 ++
 gcc/omp-general.h                             |   4 +-
 gcc/omp-low.cc                                | 403 ++++++++++++++-
 gcc/testsuite/g++.dg/gomp/array-shaping-1.C   |  22 +
 gcc/testsuite/g++.dg/gomp/array-shaping-2.C   | 134 +++++
 .../g++.dg/gomp/bad-array-shaping-1.C         |  47 ++
 .../g++.dg/gomp/bad-array-shaping-2.C         |  52 ++
 .../g++.dg/gomp/bad-array-shaping-3.C         |  53 ++
 .../g++.dg/gomp/bad-array-shaping-4.C         |  60 +++
 .../g++.dg/gomp/bad-array-shaping-5.C         |  55 ++
 .../g++.dg/gomp/bad-array-shaping-6.C         |  59 +++
 .../g++.dg/gomp/bad-array-shaping-7.C         |  48 ++
 .../g++.dg/gomp/bad-array-shaping-8.C         |  50 ++
 gcc/tree-pretty-print.cc                      |  17 +
 gcc/tree.def                                  |   2 +-
 include/gomp-constants.h                      |   7 +-
 libgomp/libgomp.h                             |  14 +
 libgomp/target.c                              | 216 +++++---
 .../testsuite/libgomp.c++/array-shaping-1.C   | 469 ++++++++++++++++++
 .../testsuite/libgomp.c++/array-shaping-10.C  |  61 +++
 .../testsuite/libgomp.c++/array-shaping-11.C  |  63 +++
 .../testsuite/libgomp.c++/array-shaping-12.C  |  65 +++
 .../testsuite/libgomp.c++/array-shaping-13.C  |  89 ++++
 .../testsuite/libgomp.c++/array-shaping-2.C   |  38 ++
 .../testsuite/libgomp.c++/array-shaping-3.C   |  38 ++
 .../testsuite/libgomp.c++/array-shaping-4.C   |  38 ++
 .../testsuite/libgomp.c++/array-shaping-5.C   |  38 ++
 .../testsuite/libgomp.c++/array-shaping-6.C   |  54 ++
 .../testsuite/libgomp.c++/array-shaping-7.C   |  54 ++
 .../testsuite/libgomp.c++/array-shaping-8.C   |  65 +++
 .../testsuite/libgomp.c++/array-shaping-9.C   |  95 ++++
 51 files changed, 3421 insertions(+), 261 deletions(-)
 create mode 100644 gcc/testsuite/g++.dg/gomp/array-shaping-1.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/array-shaping-2.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/bad-array-shaping-1.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/bad-array-shaping-2.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/bad-array-shaping-3.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/bad-array-shaping-4.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/bad-array-shaping-5.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/bad-array-shaping-6.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/bad-array-shaping-7.C
 create mode 100644 gcc/testsuite/g++.dg/gomp/bad-array-shaping-8.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-1.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-10.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-11.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-12.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-13.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-2.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-3.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-4.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-5.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-6.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-7.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-8.C
 create mode 100644 libgomp/testsuite/libgomp.c++/array-shaping-9.C