[PATCH 00/11] OpenMP: Deep struct dereferences

[Julian Brown <julian@codesourcery.com>]

This is a series of patches to support deep struct dereferences for
OpenMP 5.0 (i.e. with multiple arrow operators,
"a->b[foo]->c[lo:hi]"). Apart from a couple of general bug fixes, the
main parts of this comprise:

  1. Topological sorting of OMP clauses by base pointer dependencies.

  2. Hoisting of struct sibling list handling out of
     gimplify_scan_omp_clauses.

These patches replace and continue from the last part of the
previously-posted series:

  https://gcc.gnu.org/pipermail/gcc-patches/2021-August/577219.html

and (still) depend on the parts of 1 through 7 of that series.

The patches have been bootstrapped & regression tested individually with
offloading to NVPTX (though some prior to the most recent rebase).

OK?

Thanks,

Julian

Julian Brown (11):
  libgomp: Release device lock on cbuf error path
  Remove base_ind/base_ref handling from extract_base_bit_offset
  OpenMP 5.0: Clause ordering for OpenMP 5.0 (topological sorting by
    base pointer)
  Remove omp_target_reorder_clauses
  OpenMP/OpenACC: Hoist struct sibling list handling in gimplification
  OpenMP: Allow array ref components for C & C++
  OpenMP: Fix non-zero attach/detach bias for struct dereferences
  Not for committing: noisy topological sorting output
  Not for committing: noisy sibling-list handling output
  Not for committing: noisy mapping-group taxonomy
  OpenMP/OpenACC: [WIP] Add gcc_unreachable to apparently-dead path in
    build_struct_comp_nodes

 gcc/c-family/c-common.h                       |    1 +
 gcc/c-family/c-omp.c                          |   42 +
 gcc/c/c-typeck.c                              |   15 +-
 gcc/cp/semantics.c                            |   17 +-
 gcc/gimplify.c                                | 2479 ++++++++++++-----
 gcc/omp-low.c                                 |    7 +-
 gcc/testsuite/g++.dg/goacc/member-array-acc.C |    2 +-
 gcc/testsuite/g++.dg/gomp/target-3.C          |    4 +-
 gcc/testsuite/g++.dg/gomp/target-lambda-1.C   |    6 +-
 gcc/testsuite/g++.dg/gomp/target-this-2.C     |    2 +-
 gcc/testsuite/g++.dg/gomp/target-this-3.C     |    4 +-
 gcc/testsuite/g++.dg/gomp/target-this-4.C     |    4 +-
 libgomp/target.c                              |    5 +-
 libgomp/testsuite/libgomp.c++/baseptrs-3.C    |  182 ++
 .../libgomp.c-c++-common/baseptrs-1.c         |   50 +
 .../libgomp.c-c++-common/baseptrs-2.c         |   70 +
 16 files changed, 2151 insertions(+), 739 deletions(-)
 create mode 100644 libgomp/testsuite/libgomp.c++/baseptrs-3.C
 create mode 100644 libgomp/testsuite/libgomp.c-c++-common/baseptrs-1.c
 create mode 100644 libgomp/testsuite/libgomp.c-c++-common/baseptrs-2.c

-- 
2.29.2