[gcc/devel/c++-coroutines] Merge master r11-6292.

[Iain D Sandoe]

https://gcc.gnu.org/g:61a0eb69e9a9d677ee68c1f94519655bcbcdbdc4

commit 61a0eb69e9a9d677ee68c1f94519655bcbcdbdc4
Merge: e706d1230f4 0e1d4b3bfe2
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Mon Dec 21 20:21:09 2020 +0000

    Merge master r11-6292.
    
            * Merge master r11-6292-g0e1d4b3bfe26.

Diff:

 c++tools/Makefile.in                               |   2 +-
 contrib/gcc-changelog/git_commit.py                |   8 ++
 contrib/gcc-changelog/test_email.py                |   8 ++
 contrib/gcc-changelog/test_patches.txt             |  55 ++++++++
 gcc/ChangeLog                                      |  77 +++++++++++
 gcc/DATESTAMP                                      |   2 +-
 gcc/config/darwin-driver.c                         |  17 ++-
 gcc/config/xtensa/xtensa.md                        |  21 +++
 gcc/cp/ChangeLog                                   |  83 ++++++++++++
 gcc/cp/mapper-client.cc                            |  20 ++-
 gcc/cp/mapper-resolver.cc                          |   2 +
 gcc/cp/module.cc                                   |  14 +-
 gcc/doc/invoke.texi                                |   2 +-
 gcc/dwarf2out.c                                    |   7 +
 gcc/expr.c                                         | 150 ++++++---------------
 gcc/fold-const.c                                   |  63 +++++++--
 gcc/fortran/ChangeLog                              |  50 +++++++
 gcc/fortran/trans.c                                |   3 +
 gcc/gimple-ssa-store-merging.c                     |   2 +
 gcc/gimplify.c                                     |  35 ++++-
 gcc/go/gofrontend/MERGE                            |   2 +-
 gcc/go/gofrontend/lex.cc                           |   4 +
 gcc/testsuite/ChangeLog                            |  82 +++++++++++
 gcc/testsuite/g++.dg/gomp/declare-target-3.C       |  14 +-
 gcc/testsuite/g++.dg/gomp/pr98383.C                |  18 +++
 gcc/testsuite/gcc.c-torture/compile/pr98407.c      |  10 ++
 gcc/testsuite/gcc.c-torture/execute/pr98366.c      |  13 ++
 gcc/testsuite/gcc.dg/pr97750.c                     |   4 +-
 gcc/testsuite/gcc.target/xtensa/bswap.c            |  14 ++
 gcc/testsuite/gdc.dg/debug/debug.exp               |  28 ++++
 gcc/testsuite/gdc.dg/debug/dwarf2/dwarf2.exp       |  31 +++++
 .../gdc.dg/debug/dwarf2/imports/pr98067.d          |   3 +
 gcc/testsuite/gdc.dg/debug/dwarf2/langdw2.d        |   7 +
 gcc/testsuite/gdc.dg/debug/dwarf2/langdw3.d        |   6 +
 gcc/testsuite/gdc.dg/debug/dwarf2/pr98067.d        |   6 +
 gcc/testsuite/gdc.dg/debug/trivial.d               |   6 +
 .../gfortran.dg/coarray/send_char_array_1.f90      |  16 +--
 .../go.test/test/fixedbugs/issue11326b.go          |   4 +
 gcc/testsuite/go.test/test/fixedbugs/issue13471.go |  22 +--
 libcc1/ChangeLog                                   |   7 +
 libcc1/configure                                   |   2 +-
 libcc1/configure.ac                                |   2 +-
 libcody/Makefile.in                                |   1 +
 libcody/Makesub.in                                 |   1 +
 libcody/buffer.cc                                  |   8 +-
 libcody/client.cc                                  |   1 +
 libcody/configure                                  |  93 +++++++++++++
 libcody/configure.ac                               |   1 +
 libcody/netclient.cc                               |   1 +
 libcody/netserver.cc                               |   1 +
 libcody/server.cc                                  |   1 +
 libgcc/ChangeLog                                   |   7 +
 libgcc/config/xtensa/lib1funcs.S                   |  39 ++++++
 libgcc/config/xtensa/t-xtensa                      |   1 +
 libgo/mkrsysinfo.sh                                |  54 ++------
 libgo/mksysinfo.sh                                 |  59 ++------
 libgo/sysinfo.c                                    |   1 +
 libgomp/ChangeLog                                  |   4 +
 libgomp/testsuite/libgomp.c/task-6.c               |  47 +++++++
 libstdc++-v3/ChangeLog                             |  68 ++++++++++
 libstdc++-v3/include/bits/c++config                |  14 ++
 libstdc++-v3/include/std/charconv                  |   2 +
 libstdc++-v3/include/std/semaphore                 |   3 +-
 libstdc++-v3/src/c++17/floating_to_chars.cc        |  10 +-
 libstdc++-v3/testsuite/20_util/to_chars/double.cc  |   1 +
 libstdc++-v3/testsuite/20_util/to_chars/float.cc   |   1 +
 .../testsuite/20_util/to_chars/long_double.cc      |   1 +
 libstdc++-v3/testsuite/lib/libstdc++.exp           |   8 ++
 68 files changed, 1083 insertions(+), 267 deletions(-)