[gcc/devel/c++-coroutines] Merge master r11-2610.

[gcc/devel/c++-coroutines] Merge master r11-2610.

[Iain D Sandoe]

https://gcc.gnu.org/g:bc0844d2c8e8ba2d1a7da456cf80c1336451a90f

commit bc0844d2c8e8ba2d1a7da456cf80c1336451a90f
Merge: 5b663842dbe a1ee6d507b0
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Fri Aug 7 19:52:59 2020 +0100

    Merge master r11-2610.
    
            * Merge master r11-2610-ga1ee6d507b0c.

Diff:

 gcc/ChangeLog                                      | 107 +++++++++++++++
 gcc/DATESTAMP                                      |   2 +-
 gcc/config/bpf/bpf.md                              |   2 +-
 gcc/config/bpf/constraints.md                      |   1 -
 gcc/config/bpf/predicates.md                       |   1 -
 gcc/config/mmix/mmix.md                            |  48 +++++--
 gcc/config/rs6000/predicates.md                    |   7 +-
 gcc/config/rs6000/rs6000.md                        |  44 ++++---
 gcc/generic-match-head.c                           |  10 ++
 gcc/gimple-match-head.c                            |  10 ++
 gcc/match.pd                                       |  20 +--
 gcc/testsuite/ChangeLog                            | 144 +++++++++++++++++++++
 gcc/testsuite/gcc.dg/ia64-sync-5.c                 |  83 ++++++++++++
 gcc/testsuite/gcc.dg/pr96514.c                     |  27 ++++
 gcc/testsuite/gcc.target/bpf/diag-funargs-2.c      |   1 -
 gcc/testsuite/gcc.target/bpf/diag-funargs-3.c      |   1 -
 .../gcc.target/bpf/helper-get-current-cgroup-id.c  |   2 +-
 .../gcc.target/bpf/helper-get-local-storage.c      |   2 +-
 .../gcc.target/bpf/helper-get-socket-cookie.c      |   2 +-
 .../gcc.target/bpf/helper-get-socket-uid.c         |   2 +-
 gcc/testsuite/gcc.target/bpf/helper-getsockopt.c   |   2 +-
 .../gcc.target/bpf/helper-lwt-push-encap.c         |   2 +-
 .../gcc.target/bpf/helper-lwt-seg6-action.c        |   2 +-
 .../gcc.target/bpf/helper-lwt-seg6-adjust-srh.c    |   5 +-
 .../gcc.target/bpf/helper-lwt-seg6-store-bytes.c   |   2 +-
 .../gcc.target/bpf/helper-msg-apply-bytes.c        |   2 +-
 .../gcc.target/bpf/helper-msg-cork-bytes.c         |   2 +-
 .../gcc.target/bpf/helper-msg-pull-data.c          |   2 +-
 .../gcc.target/bpf/helper-msg-redirect-map.c       |   5 +-
 .../gcc.target/bpf/helper-override-return.c        |   2 +-
 .../gcc.target/bpf/helper-perf-event-read-value.c  |   2 +-
 .../gcc.target/bpf/helper-perf-prog-read-value.c   |   2 +-
 .../gcc.target/bpf/helper-probe-read-str.c         |   2 +-
 gcc/testsuite/gcc.target/bpf/helper-rc-keydown.c   |   5 +-
 gcc/testsuite/gcc.target/bpf/helper-rc-repeat.c    |   2 +-
 gcc/testsuite/gcc.target/bpf/helper-redirect-map.c |   2 +-
 gcc/testsuite/gcc.target/bpf/helper-set-hash.c     |   2 +-
 gcc/testsuite/gcc.target/bpf/helper-setsockopt.c   |   2 +-
 .../gcc.target/bpf/helper-sk-lookup-tcp.c          |   2 +-
 .../gcc.target/bpf/helper-sk-lookup-upd.c          |   8 +-
 .../gcc.target/bpf/helper-sk-redirect-map.c        |   2 +-
 gcc/testsuite/gcc.target/bpf/helper-sk-release.c   |   2 +-
 .../gcc.target/bpf/helper-sk-select-reuseport.c    |   4 +-
 .../gcc.target/bpf/helper-sk-storage-delete.c      |   2 +-
 .../gcc.target/bpf/helper-sk-storage-get.c         |   2 +-
 .../gcc.target/bpf/helper-skb-adjust-room.c        |   2 +-
 .../gcc.target/bpf/helper-skb-cgroup-id.c          |   2 +-
 .../gcc.target/bpf/helper-skb-change-head.c        |   2 +-
 .../gcc.target/bpf/helper-sock-map-update.c        |   5 +-
 .../gcc.target/bpf/helper-sock-ops-cb-flags-set.c  |   5 +-
 gcc/testsuite/gcc.target/bpf/helper-strtol.c       |   2 +-
 gcc/testsuite/gcc.target/bpf/helper-strtoul.c      |   2 +-
 .../bpf/helper-sysctl-get-current-value.c          |   2 +-
 .../gcc.target/bpf/helper-sysctl-get-name.c        |   2 +-
 .../gcc.target/bpf/helper-sysctl-get-new-value.c   |   2 +-
 .../gcc.target/bpf/helper-sysctl-set-new-value.c   |   2 +-
 .../gcc.target/bpf/helper-tcp-check-syncookie.c    |   2 +-
 .../gcc.target/bpf/helper-xdp-adjust-head.c        |   2 +-
 .../gcc.target/bpf/helper-xdp-adjust-meta.c        |   2 +-
 .../gcc.target/bpf/skb-ancestor-cgroup-id.c        |   5 +-
 gcc/testsuite/gcc.target/powerpc/bswap-brd.c       |  23 ++++
 gcc/testsuite/gcc.target/powerpc/bswap-brh.c       |  11 ++
 gcc/testsuite/gcc.target/powerpc/bswap-brw.c       |  22 ++++
 gcc/testsuite/gcc.target/powerpc/pr96493.c         |  28 ++++
 gcc/tree-if-conv.c                                 |   5 +
 libstdc++-v3/ChangeLog                             |  64 +++++++++
 libstdc++-v3/config/abi/pre/gnu.ver                |  17 ++-
 libstdc++-v3/doc/xml/manual/status_cxx2020.xml     |   3 +-
 libstdc++-v3/include/bits/basic_string.h           |  52 ++++----
 libstdc++-v3/include/bits/basic_string.tcc         | 119 ++++++++++++-----
 .../comparisons/algorithms/partial_order.cc        |  56 ++++----
 .../comparisons/algorithms/weak_order.cc           |  62 ++++-----
 .../21_strings/basic_string/capacity/1.cc          |  14 +-
 .../21_strings/basic_string/capacity/char/1.cc     |  14 +-
 .../21_strings/basic_string/capacity/char/18654.cc |   8 +-
 .../21_strings/basic_string/capacity/char/2.cc     |   6 +-
 .../21_strings/basic_string/capacity/wchar_t/1.cc  |  14 +-
 .../basic_string/capacity/wchar_t/18654.cc         |   8 +-
 .../21_strings/basic_string/capacity/wchar_t/2.cc  |   6 +-
 79 files changed, 910 insertions(+), 244 deletions(-)