[gcc/devel/c++-coroutines] Merge master r11-7259.

[gcc/devel/c++-coroutines] Merge master r11-7259.

[Iain D Sandoe]

https://gcc.gnu.org/g:9a6aff0fda801e9a348c1ad38e42f33dc6865927

commit 9a6aff0fda801e9a348c1ad38e42f33dc6865927
Merge: f5128f4ec84 30a4d95bf76
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Tue Feb 16 19:35:35 2021 +0000

    Merge master r11-7259.
    
            * Merge master r11-7259-g30a4d95bf76b.

Diff:

 gcc/ChangeLog                                      | 119 +++++++++++++++++++++
 gcc/DATESTAMP                                      |   2 +-
 gcc/c-family/c-attribs.c                           |  11 +-
 gcc/config/i386/i386.c                             |   6 +-
 gcc/doc/extend.texi                                |  27 +++--
 gcc/fortran/expr.c                                 |   2 +
 gcc/fortran/io.c                                   |   7 ++
 gcc/fortran/openmp.c                               |   8 ++
 gcc/stmt.c                                         |   8 +-
 gcc/testsuite/ChangeLog                            |  11 ++
 gcc/testsuite/g++.dg/ext/attr-assume-aligned.C     |   5 +
 gcc/testsuite/gcc.c-torture/compile/pr98096.c      |  10 ++
 gcc/testsuite/gcc.dg/attr-assume_aligned-4.c       |   4 +-
 gcc/testsuite/gcc.misc-tests/outputs.exp           |   2 +-
 gcc/testsuite/gcc.target/i386/pr99100.c            |  22 ++++
 gcc/testsuite/gcc.target/mips/compact-branches-5.c |   2 +-
 gcc/testsuite/gcc.target/mips/compact-branches-6.c |   2 +-
 gcc/testsuite/gfortran.dg/fmt_nonchar_1.f90        |  46 ++++++++
 gcc/testsuite/gfortran.dg/fmt_nonchar_2.f90        |  22 ++++
 gcc/testsuite/gfortran.dg/goacc/ref_inquiry.f90    |  56 ++++++++++
 gcc/testsuite/gfortran.dg/gomp/ref_inquiry.f90     |  39 +++++++
 gcc/tree-ssa-structalias.c                         |  25 +++--
 gcc/tree-vect-stmts.c                              |   4 +-
 libstdc++-v3/ChangeLog                             |  13 +++
 24 files changed, 421 insertions(+), 32 deletions(-)