[gcc(refs/vendors/ibm/heads/gcc-10-branch)] ibm: Merge up to top of releases/gcc-10

[Peter Bergner]

https://gcc.gnu.org/g:5a8d4bfe5ea6cbf07cea2ffaa320705aa12f74b9

commit 5a8d4bfe5ea6cbf07cea2ffaa320705aa12f74b9
Merge: 600529fa242 034e7f1d295
Author: Peter Bergner <bergner@linux.ibm.com>
Date:   Thu Jul 2 20:39:37 2020 -0500

    ibm: Merge up to top of releases/gcc-10
    
    2020-07-02  Peter Bergner  <bergner@linux.ibm.com>
    
            Merge up to releases/gcc-10 034e7f1d295140344f3849ebba1d352cad01da27

Diff:

 contrib/ChangeLog                                  | 10 +++
 gcc/ChangeLog                                      | 26 +++++++
 gcc/ChangeLog.ibm                                  |  4 +
 gcc/DATESTAMP                                      |  2 +-
 gcc/config/rs6000/rs6000-c.c                       |  2 +
 gcc/fortran/ChangeLog                              |  8 ++
 gcc/fortran/resolve.c                              |  2 +-
 gcc/testsuite/ChangeLog                            | 32 ++++++++
 gcc/testsuite/gfortran.dg/pr88379.f90              | 11 +++
 libstdc++-v3/ChangeLog                             | 23 ++++++
 libstdc++-v3/include/std/variant                   |  3 +-
 libstdc++-v3/testsuite/20_util/variant/91807.cc    | 35 +++++++++
 .../testsuite/29_atomics/atomic_float/1.cc         | 86 +++++++++++-----------
 .../testsuite/29_atomics/atomic_ref/float.cc       | 45 +++++------
 14 files changed, 222 insertions(+), 67 deletions(-)

diff --cc gcc/ChangeLog.ibm
index 5188d1d0a65,00000000000..22fa4f9c3fe
mode 100644,000000..100644
--- a/gcc/ChangeLog.ibm
+++ b/gcc/ChangeLog.ibm
@@@ -1,7 -1,0 +1,11 @@@
++2020-07-02  Peter Bergner  <bergner@linux.ibm.com>
++
++	Merge up to releases/gcc-10 034e7f1d295140344f3849ebba1d352cad01da27
++
 +2020-07-02  Peter Bergner  <bergner@linux.ibm.com>
 +
 +	Merge up to releases/gcc-10 41b504e91e5cd0fdce36b7306ce42dd592c401f2
 +
 +2020-06-24  Peter Bergner  <bergner@linux.ibm.com>
 +
 +	Merge up to releases/gcc-10 8e25bae517450c001f5e84b7ab24f06bb1425df6.