[gcc/devel/omp/gcc-12] Merge branch 'releases/gcc-12' into devel/omp/gcc-12

[Tobias Burnus]

https://gcc.gnu.org/g:05e72a801bb9e7325a6481e42e482eb10df76795

commit 05e72a801bb9e7325a6481e42e482eb10df76795
Merge: 89dd8390cdf 8c57e8005db
Author: Tobias Burnus <tobias@codesourcery.com>
Date:   Wed Jul 13 11:09:35 2022 +0200

    Merge branch 'releases/gcc-12' into devel/omp/gcc-12
    
    Merge up to r12-8566-g8c57e8005db4864ecfba791d788f0b1dc6110f3b (13th July 2022)

Diff:

 gcc/ChangeLog                                      | 35 ++++++++++++
 gcc/DATESTAMP                                      |  2 +-
 gcc/c-family/ChangeLog                             | 17 ++++++
 gcc/c-family/c-format.cc                           |  3 +-
 gcc/c-family/known-headers.cc                      | 14 +++++
 gcc/config/i386/i386.md                            | 22 +++++---
 gcc/config/loongarch/loongarch.cc                  | 12 +++--
 gcc/config/loongarch/loongarch.md                  |  2 +-
 gcc/testsuite/ChangeLog                            | 39 ++++++++++++++
 gcc/testsuite/g++.dg/spellcheck-stdlib.C           | 29 ++++++++++
 gcc/testsuite/g++.dg/warn/Wformat-char8_t-1.C      | 10 ++++
 gcc/testsuite/gcc.c-torture/execute/mul-sext.c     | 20 +++++++
 .../gcc.dg/tree-ssa/alias-access-path-13.c         | 36 +++++++++++++
 gcc/testsuite/gcc.dg/tree-ssa/pr105860.c           | 63 ++++++++++++++++++++++
 gcc/testsuite/gcc.target/loongarch/mulw_d_w.c      | 10 ++++
 gcc/testsuite/gcc.target/loongarch/prolog-opt.c    | 15 ++++++
 gcc/tree-sra.cc                                    | 13 ++++-
 libstdc++-v3/ChangeLog                             | 20 +++++++
 libstdc++-v3/include/Makefile.am                   |  2 +-
 libstdc++-v3/include/Makefile.in                   |  2 +-
 .../27_io/filesystem/iterators/error_reporting.cc  |  9 +++-
 .../filesystem/iterators/error_reporting.cc        |  9 +++-
 22 files changed, 363 insertions(+), 21 deletions(-)