[gcc/devel/c++-coroutines] Merge master r10-6538.

[Iain D Sandoe]

https://gcc.gnu.org/g:e2f93056591fc473f48dac66b4500bfe4f2059a4

commit e2f93056591fc473f48dac66b4500bfe4f2059a4
Merge: 2c7fe3e 8686c4d
Author: Iain Sandoe <iain@sandoe.co.uk>
Date:   Sun Feb 9 20:45:05 2020 +0100

    Merge master r10-6538.
    
    2020-02-09  Iain Sandoe  <iain@sandoe.co.uk>
    
    	* Merge master r10-6538-g8686c4d84517.

Diff:

 gcc/ChangeLog                                      |  34 +++
 gcc/DATESTAMP                                      |   2 +-
 gcc/config/aarch64/aarch64-simd.md                 |   2 +-
 gcc/config/nds32/nds32.c                           |   2 +-
 gcc/config/riscv/riscv.h                           |   7 +
 gcc/config/sh/sh.c                                 |   2 +-
 gcc/cp/ChangeLog                                   |   7 +
 gcc/cp/constexpr.c                                 |  11 +
 gcc/gimplify.c                                     |  16 ++
 gcc/recog.c                                        |  98 ++++---
 gcc/testsuite/ChangeLog                            |  26 ++
 gcc/testsuite/g++.dg/cpp2a/constexpr-new11.C       |  31 +++
 gcc/testsuite/g++.dg/cpp2a/constexpr-new12.C       |  26 ++
 gcc/testsuite/g++.dg/cpp2a/constexpr-new13.C       |  26 ++
 gcc/testsuite/gcc.dg/vmx/ops.c                     |   2 +-
 gcc/testsuite/gcc.target/aarch64/pr91927.c         |  38 +++
 gcc/testsuite/gcc.target/i386/pr91333.c            |   2 +-
 gcc/testsuite/gcc.target/powerpc/vsx-vector-6.h    | 305 ++++++++++-----------
 gcc/testsuite/gcc.target/powerpc/vsx-vector-6.p7.c |  74 ++---
 gcc/testsuite/gcc.target/powerpc/vsx-vector-6.p8.c |  80 +++---
 gcc/testsuite/gcc.target/powerpc/vsx-vector-6.p9.c |  70 ++---
 libgomp/ChangeLog                                  |   4 +
 libgomp/testsuite/libgomp.c/target-38.c            |  28 ++
 libstdc++-v3/ChangeLog                             |  15 +
 libstdc++-v3/include/bits/range_cmp.h              |   6 +-
 libstdc++-v3/include/std/ranges                    |   4 +-
 .../20_util/function_objects/range.cmp/equal_to.cc |   9 +
 .../20_util/function_objects/range.cmp/less.cc     |   9 +
 28 files changed, 603 insertions(+), 333 deletions(-)