[gcc/devel/c++-coroutines] Merge master r10-7280.

[Iain D Sandoe]

https://gcc.gnu.org/g:23dfb3a5ab83b6711cf734ba7b553c0fd7886ff7

commit 23dfb3a5ab83b6711cf734ba7b553c0fd7886ff7
Merge: cf4440f646f 37482edc3f7
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Thu Mar 19 20:48:49 2020 +0000

    Merge master r10-7280.
    
    2020-03-19  Iain Sandoe  <iain@sandoe.co.uk>
    
            * Merge master r10-7280-g37482edc3f7f.

Diff:

 gcc/ChangeLog                                      |  52 ++++++++
 gcc/DATESTAMP                                      |   2 +-
 gcc/cgraphunit.c                                   |  21 ++-
 gcc/config/rs6000/constraints.md                   |  11 ++
 gcc/cp/ChangeLog                                   |   8 ++
 gcc/cp/cp-gimplify.c                               |  17 ++-
 gcc/cp/parser.c                                    |   2 +
 gcc/cse.c                                          |   1 -
 gcc/d/dmd/MERGE                                    |   2 +-
 gcc/d/dmd/dclass.c                                 |   1 -
 gcc/d/dmd/expressionsem.c                          |   1 +
 gcc/d/dmd/module.h                                 |   1 +
 gcc/fold-const.c                                   |   2 +-
 gcc/ipa-cp.c                                       |  12 +-
 gcc/ipa-inline.c                                   |   3 +
 gcc/lto-section-in.c                               |   1 +
 gcc/lto-streamer-out.c                             |  82 +++++++++++-
 gcc/lto-streamer.h                                 |   1 +
 gcc/testsuite/ChangeLog                            |  21 +++
 gcc/testsuite/g++.dg/torture/pr94216.C             |  45 +++++++
 gcc/testsuite/gcc.c-torture/pr92372.c              |  16 +++
 gcc/testsuite/gcc.dg/attr-flatten-1.c              |  18 +++
 gcc/testsuite/gcc.dg/attr-weakref-5.c              |  31 +++++
 gcc/testsuite/gcc.dg/pr94211.c                     |  12 ++
 .../gdc.test/compilable/imports/pr9471a.d          |   2 +
 .../gdc.test/compilable/imports/pr9471b.d          |   5 +
 .../gdc.test/compilable/imports/pr9471c.d          |  18 +++
 .../gdc.test/compilable/imports/pr9471d.d          |   1 +
 gcc/testsuite/gdc.test/compilable/pr9471.d         |   6 +
 gcc/testsuite/gdc.test/runnable/traits.d           |   4 +-
 gcc/tree-ssa-phiopt.c                              |  10 +-
 include/ChangeLog                                  |  13 ++
 include/lto-symtab.h                               |  13 ++
 include/plugin-api.h                               |  32 ++++-
 libgomp/ChangeLog                                  |  10 ++
 libgomp/testsuite/libgomp.c++/pr93931.C            | 120 ++++++++++++++++++
 .../libgomp.c-c++-common/function-not-offloaded.c  |   1 +
 libstdc++-v3/ChangeLog                             |  13 ++
 libstdc++-v3/include/std/type_traits               |  70 ++++------
 .../20_util/is_nothrow_constructible/94003.cc      |  46 +++++++
 lto-plugin/ChangeLog                               |  20 +++
 lto-plugin/lto-plugin.c                            | 141 +++++++++++++++++++--
 42 files changed, 805 insertions(+), 83 deletions(-)