[gcc/devel/c++-coroutines] Merge master r11-8353.

[Iain D Sandoe]

https://gcc.gnu.org/g:73307d4402eb81d3fbab474f904ac34bc17f23b5

commit 73307d4402eb81d3fbab474f904ac34bc17f23b5
Merge: 116900d3cde 886b6c1e8af
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Fri Apr 23 19:49:36 2021 +0100

    Merge master r11-8353.
    
            * Merge master r11-8353-g886b6c1e8af5.

Diff:

 MAINTAINERS                                        |   1 +
 contrib/ChangeLog                                  |   6 +
 contrib/config-list.mk                             |   2 +-
 gcc/ChangeLog                                      |  25 +++
 gcc/DATESTAMP                                      |   2 +-
 gcc/cfganal.c                                      |  10 +-
 gcc/config.gcc                                     |   9 -
 gcc/config/bpf/bpf.h                               |  16 +-
 gcc/config/i386/i386-options.c                     |  10 +
 gcc/config/i386/i386.md                            |  30 ---
 gcc/config/i386/sync.md                            |  24 ++-
 gcc/config/rs6000/aix61.h                          | 214 ---------------------
 gcc/config/rs6000/aix71.h                          |   4 +-
 gcc/config/rs6000/aix72.h                          |   4 +-
 gcc/cp/ChangeLog                                   |   6 +
 gcc/cp/cp-tree.h                                   |   3 +
 gcc/cp/cxx-pretty-print.c                          |  47 +++--
 gcc/cp/decl.c                                      |   8 +-
 gcc/cp/lex.c                                       |   2 -
 gcc/cp/pt.c                                        |  24 ++-
 gcc/early-remat.c                                  |   2 +-
 gcc/fortran/ChangeLog                              |  14 ++
 gcc/genmatch.c                                     |  20 +-
 gcc/gimple-match-head.c                            |   9 +-
 gcc/gimple.c                                       |   7 +-
 gcc/ipa-sra.c                                      |   1 -
 gcc/lto-wrapper.c                                  |   2 -
 gcc/predict.c                                      |   6 -
 gcc/store-motion.c                                 |   1 -
 gcc/testsuite/ChangeLog                            |  67 +++++++
 gcc/testsuite/g++.dg/concepts/diagnostic17.C       |  17 ++
 gcc/testsuite/g++.dg/cpp1z/direct-enum-init2.C     |   8 +
 gcc/testsuite/g++.dg/cpp2a/concepts-uneval3.C      |   9 +
 .../g++.dg/template/partial-specialization9.C      |   7 +
 gcc/testsuite/g++.dg/vect/slp-pr99971.cc           |  36 ++++
 gcc/testsuite/g++.dg/warn/Wtype-limits6.C          |  17 ++
 gcc/testsuite/gcc.target/i386/pr100093.c           |  12 ++
 gcc/testsuite/gcc.target/i386/pr100182.c           |  30 +++
 gcc/testsuite/gcc.target/i386/pr71245-1.c          |   2 +-
 gcc/testsuite/gcc.target/i386/pr71245-2.c          |   2 +-
 gcc/testsuite/gcc.target/i386/pr79514.c            |   1 +
 gcc/tree-ssa-loop-ivopts.c                         |  13 +-
 gcc/tree-ssa-pre.c                                 |   9 +-
 gcc/tree-vect-data-refs.c                          |  18 +-
 libgomp/ChangeLog                                  |   5 +
 libstdc++-v3/ChangeLog                             |  49 +++++
 libstdc++-v3/config/os/aix/atomicity.h             |  56 ------
 libstdc++-v3/include/experimental/io_context       |  18 +-
 libstdc++-v3/include/experimental/socket           |  81 ++++----
 .../experimental/net/socket/socket_base.cc         |  45 +++++
 .../testsuite/util/testsuite_common_types.h        |  99 ++++++++++
 51 files changed, 654 insertions(+), 456 deletions(-)