[gcc/devel/c++-coroutines] Merge master r11-2741.

[Iain D Sandoe]

https://gcc.gnu.org/g:e898501dab6c4f0c5085fa0cd3c72b85c0a2a1a0

commit e898501dab6c4f0c5085fa0cd3c72b85c0a2a1a0
Merge: 580eba7c416 16bea83ae55
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Tue Aug 18 18:20:47 2020 +0100

    Merge master r11-2741.
    
            * Merge master r11-2741-g16bea83ae55f.

Diff:

 gcc/ChangeLog                                      |  50 ++++++++
 gcc/DATESTAMP                                      |   2 +-
 gcc/analyzer/ChangeLog                             |  18 +++
 gcc/analyzer/region-model-manager.cc               |   4 +-
 gcc/analyzer/region-model.cc                       |  28 +++-
 gcc/analyzer/region.cc                             |   2 +-
 gcc/analyzer/store.cc                              |  21 ++-
 gcc/c/c-parser.c                                   |  19 ++-
 gcc/config/i386/i386-builtin.def                   |   4 +-
 gcc/config/i386/i386-expand.c                      |  85 ++++++------
 gcc/config/i386/i386.md                            | 142 +++++++--------------
 gcc/cp/name-lookup.c                               |  22 ++--
 gcc/d/decl.cc                                      |  17 ++-
 gcc/doc/gimple.texi                                |   6 +-
 gcc/fold-const.c                                   |  11 +-
 gcc/fortran/ChangeLog                              |  11 ++
 gcc/go/gofrontend/MERGE                            |   2 +-
 gcc/go/gofrontend/expressions.cc                   |   9 +-
 gcc/go/gofrontend/gogo.cc                          |   8 +-
 gcc/testsuite/ChangeLog                            |  25 ++++
 gcc/testsuite/g++.dg/analyzer/pr96641.C            |  18 +++
 gcc/testsuite/gcc.dg/Wunused-var-4.c               |  33 +++++
 gcc/testsuite/gcc.dg/analyzer/pr96639.c            |  10 ++
 gcc/testsuite/gcc.dg/analyzer/pr96642.c            |  10 ++
 gcc/testsuite/gcc.dg/analyzer/pr96644.c            |  24 ++++
 gcc/testsuite/gcc.dg/pr96298.c                     |  18 +++
 gcc/testsuite/gcc.target/i386/pr92865-1.c          |  10 +-
 gcc/testsuite/gcc.target/i386/pr96298.c            |  18 +++
 gcc/testsuite/gcc.target/i386/pr96562-1.c          |  81 ++++++++++++
 gcc/testsuite/gcc.target/i386/rdrand-1.c           |   2 +-
 gcc/testsuite/gcc.target/i386/rdrand-2.c           |   2 +-
 gcc/testsuite/gcc.target/i386/rdrand-3.c           |   2 +-
 gcc/testsuite/gdc.dg/pr96301a.d                    |  31 +++++
 gcc/testsuite/gdc.dg/pr96301b.d                    |  25 ++++
 gcc/testsuite/gdc.dg/pr96301c.d                    |  25 ++++
 libgfortran/ChangeLog                              |   5 +
 libstdc++-v3/ChangeLog                             |  15 +++
 libstdc++-v3/include/std/future                    | 101 +++++++--------
 libstdc++-v3/include/std/thread                    |  32 +----
 .../17_intro/headers/c++1998/all_attributes.cc     |   2 +
 .../17_intro/headers/c++2011/all_attributes.cc     |   2 +
 .../17_intro/headers/c++2014/all_attributes.cc     |   2 +
 .../17_intro/headers/c++2017/all_attributes.cc     |   2 +
 .../17_intro/headers/c++2020/all_attributes.cc     |   2 +
 libstdc++-v3/testsuite/30_threads/async/69724.cc   | 119 +++++++++++++++++
 45 files changed, 793 insertions(+), 284 deletions(-)