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* [gcc(refs/vendors/microsoft/heads/releases/gcc-11)] Add the contents of .github folder.
@ 2022-07-29 22:43 Eugene Rozenfeld
  0 siblings, 0 replies; only message in thread
From: Eugene Rozenfeld @ 2022-07-29 22:43 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:ab70439c6f116d070992a3015ad590138e371a62

commit ab70439c6f116d070992a3015ad590138e371a62
Author: Eugene Rozenfeld <erozen@microsoft.com>
Date:   Fri Jul 29 15:42:26 2022 -0700

    Add the contents of .github folder.

Diff:
---
 .github/LICENSE.txt                               |  21 +
 .github/Mariner/specs/11.2.1/gcc.specs            | 386 +++++++++++
 .github/actions/build-composite/action.yaml       |  42 ++
 .github/actions/build-tarball/action.yaml         |  89 +++
 .github/actions/print-gcc-testset/action.yaml     |  38 +
 .github/actions/pull-master-upstream/action.yaml  |  50 ++
 .github/actions/rebase-gcc-master/action.yaml     |  50 ++
 .github/actions/setup-vendor-branches/action.yaml |  52 ++
 .github/actions/test-composite/action.yaml        |  64 ++
 .github/scripts/build-gcc.sh                      |  41 ++
 .github/scripts/checkout-refs.sh                  |  42 ++
 .github/scripts/common.py                         |  84 +++
 .github/scripts/config.py                         | 116 ++++
 .github/scripts/configure-gcc.sh                  |  41 ++
 .github/scripts/delete-branches.sh                |  25 +
 .github/scripts/downloadBuildArtifact.py          | 222 ++++++
 .github/scripts/gccWorkflow.py                    | 189 +++++
 .github/scripts/gcc_release                       | 799 ++++++++++++++++++++++
 .github/scripts/globals.py                        |  29 +
 .github/scripts/init.sh                           |  39 ++
 .github/scripts/pushMergedVendorBranch.sh         |  56 ++
 .github/scripts/test-gcc.sh                       |  45 ++
 .github/workflows/build.yaml                      |  88 +++
 .github/workflows/delete-merge-branches.yaml      |  52 ++
 .github/workflows/package-rpm.yaml                |  95 +++
 .github/workflows/package-source-tarball.yaml     |  72 ++
 .github/workflows/test-gcc.yaml                   | 161 +++++
 .github/workflows/update-main.yaml                | 395 +++++++++++
 .github/workflows/update-mirror-branches.yaml     |  91 +++
 29 files changed, 3474 insertions(+)

diff --git a/.github/LICENSE.txt b/.github/LICENSE.txt
new file mode 100644
index 00000000000..63447fd8bbb
--- /dev/null
+++ b/.github/LICENSE.txt
@@ -0,0 +1,21 @@
+Copyright (c) Microsoft Corporation.
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/.github/Mariner/specs/11.2.1/gcc.specs b/.github/Mariner/specs/11.2.1/gcc.specs
new file mode 100644
index 00000000000..bd6e8a346bb
--- /dev/null
+++ b/.github/Mariner/specs/11.2.1/gcc.specs
@@ -0,0 +1,386 @@
+%global security_hardening nofortify
+%define _use_internal_dependency_generator 0
+Summary:        Contains the GNU compiler collection
+Name:           gcc
+Version:        11.2.1
+Release:        2%{?dist}
+License:        GPLv2+
+Vendor:         Microsoft Corporation
+Distribution:   Mariner
+Group:          Development/Tools
+URL:            https://gcc.gnu.org/
+Source0:       	~/output_dir/gcc-%{version}/gcc-%{version}.tar.xz
+Requires:       gcc-c++ = %{version}-%{release}
+Requires:       gmp
+Requires:       libgcc-atomic = %{version}-%{release}
+Requires:       libgcc-devel = %{version}-%{release}
+Requires:       libgomp-devel = %{version}-%{release}
+Requires:       libmpc
+Requires:       libstdc++-devel = %{version}-%{release}
+Provides:       cpp = %{version}-%{release}
+Provides:       gcc-plugin-devel = %{version}-%{release}
+Provides:       libasan = %{version}-%{release}
+Provides:       libasan%{?_isa} = %{version}-%{release}
+Provides:       libasan-static = %{version}-%{release}
+Provides:       libasan-static%{?_isa} = %{version}-%{release}
+Provides:       liblsan = %{version}-%{release}
+Provides:       liblsan%{?_isa} = %{version}-%{release}
+Provides:       liblsan-static = %{version}-%{release}
+Provides:       liblsan-static%{?_isa} = %{version}-%{release}
+Provides:       libtsan = %{version}-%{release}
+Provides:       libtsan%{?_isa} = %{version}-%{release}
+Provides:       libtsan-static = %{version}-%{release}
+Provides:       libtsan-static%{?_isa} = %{version}-%{release}
+Provides:       libubsan = %{version}-%{release}
+Provides:       libubsan%{?_isa} = %{version}-%{release}
+Provides:       libubsan-static = %{version}-%{release}
+Provides:       libubsan-static%{?_isa} = %{version}-%{release}
+Provides:       libquadmath = %{version}-%{release}
+Provides:       libquadmath-devel = %{version}-%{release}
+Provides:       libquadmath-devel%{?_isa} = %{version}-%{release}
+#%if %{with_check}
+#BuildRequires:  autogen
+#BuildRequires:  dejagnu
+#%endif
+
+%description
+The GCC package contains the GNU compiler collection,
+which includes the C and C++ compilers.
+
+%package -n     gfortran
+Summary:        GNU Fortran compiler.
+Group:          Development/Tools
+Requires:       gcc = %{version}-%{release}
+Provides:       gcc-gfortran = %{version}-%{release}
+
+%description -n gfortran
+The gfortran package contains GNU Fortran compiler.
+
+%package -n     libgcc
+Summary:        GNU C Library
+Group:          System Environment/Libraries
+
+%description -n libgcc
+The libgcc package contains GCC shared libraries for gcc.
+
+%package -n     libgcc-atomic
+Summary:        GNU C Library for atomic counter updates
+Group:          System Environment/Libraries
+Requires:       libgcc = %{version}-%{release}
+Provides:       libatomic = %{version}-%{release}
+
+%description -n libgcc-atomic
+The libgcc package contains GCC shared libraries for atomic counter updates.
+
+%package -n     libgcc-devel
+Summary:        GNU C Library
+Group:          Development/Libraries
+Requires:       libgcc = %{version}-%{release}
+
+%description -n libgcc-devel
+The libgcc package contains GCC shared libraries for gcc .
+This package contains development headers and static library for libgcc.
+
+%package        c++
+Summary:        C++ support for GCC
+Group:          System Environment/Libraries
+Requires:       gcc = %{version}-%{release}
+Requires:       libstdc++-devel = %{version}-%{release}
+Provides:       gcc-g++ = %{version}-%{release}
+Provides:       g++ = %{version}-%{release}
+
+%description    c++
+This package adds C++ support to the GNU Compiler Collection.
+It includes support for most of the current C++ specification,
+including templates and exception handling.
+
+%package -n     libstdc++
+Summary:        GNU C Library
+Group:          System Environment/Libraries
+Requires:       libgcc = %{version}-%{release}
+
+%description -n libstdc++
+This package contains the GCC Standard C++ Library v3, an ongoing project to implement the ISO/IEC 14882:1998 Standard C++ library.
+
+%package -n     libstdc++-devel
+Summary:        GNU C Library
+Group:          Development/Libraries
+Requires:       libstdc++ = %{version}-%{release}
+Provides:       libstdc++-static = %{version}-%{release}
+
+%description -n libstdc++-devel
+This is the GNU implementation of the standard C++ libraries.
+This package includes the headers files and libraries needed for C++ development.
+
+%package -n     libgomp
+Summary:        GNU C Library
+Group:          System Environment/Libraries
+
+%description -n libgomp
+An implementation of OpenMP for the C, C++, and Fortran 95 compilers in the GNU Compiler Collection.
+
+%package -n     libgomp-devel
+Summary:        Development headers and static library for libgomp
+Group:          Development/Libraries
+Requires:       libgomp = %{version}-%{release}
+
+%description -n libgomp-devel
+An implementation of OpenMP for the C, C++, and Fortran 95 compilers in the GNU Compiler Collection.
+This package contains development headers and static library for libgomp
+
+%prep
+%setup -q
+# disable no-pie for gcc binaries
+sed -i '/^NO_PIE_CFLAGS = /s/@NO_PIE_CFLAGS@//' gcc/Makefile.in
+
+%build
+CFLAGS="`echo " %{build_cflags} " | sed 's/-Werror=format-security/-Wno-error=format-security/'`"
+CXXFLAGS="`echo " %{build_cxxflags} " | sed 's/-Werror=format-security/-Wno-error=format-security/'`"
+FCFLAGS="`echo " %{build_fflags} " | sed 's/-Werror=format-security/-Wno-error=format-security/'`"
+export CFLAGS
+export CXXFLAGS
+export FCFLAGS
+
+SED=sed \
+%configure \
+    --enable-shared \
+    --enable-threads=posix \
+    --enable-__cxa_atexit \
+    --enable-clocale=gnu \
+    --enable-languages=c,c++,fortran \
+    --disable-multilib \
+    --disable-bootstrap \
+    --enable-linker-build-id \
+    --enable-plugin \
+    --enable-default-pie \
+    --with-system-zlib
+make %{?_smp_mflags}
+
+%install
+make %{?_smp_mflags} DESTDIR=%{buildroot} install
+install -vdm 755 %{buildroot}/%{_libdir}
+ln -sv %{_bindir}/cpp %{buildroot}/%{_libdir}
+ln -sv gcc %{buildroot}%{_bindir}/cc
+install -vdm 755 %{buildroot}%{_datarootdir}/gdb/auto-load%{_libdir}
+mv -v %{buildroot}%{_lib64dir}/*gdb.py %{buildroot}%{_datarootdir}/gdb/auto-load%{_libdir}
+chmod 755 %{buildroot}/%{_lib64dir}/libgcc_s.so.1
+rm -rf %{buildroot}%{_infodir}
+#%find_lang %{name} --all-name
+
+%check
+ulimit -s 32768
+# disable PCH tests is ASLR is on (due to bug in pch)
+test `cat /proc/sys/kernel/randomize_va_space` -ne 0 && rm gcc/testsuite/gcc.dg/pch/pch.exp
+# disable security hardening for tests
+rm -f $(dirname $(gcc -print-libgcc-file-name))/../specs
+# run only gcc tests
+make %{?_smp_mflags} check-gcc
+# Only 1 FAIL is OK
+[ `grep ^FAIL testsuite/gcc/gcc.sum | wc -l` -ne 1 -o `grep ^XPASS testsuite/gcc/gcc.sum | wc -l` -ne 0 ] && exit 1 ||:
+[ `grep "^FAIL: gcc.dg/cpp/trad/include.c (test for excess errors)" testsuite/gcc/gcc.sum | wc -l` -ne 1 ] && exit 1 ||:
+
+%post   -p /sbin/ldconfig
+%postun -p /sbin/ldconfig
+
+%files 
+%defattr(-,root,root)
+%license COPYING
+%{_libdir}/cpp
+# Executables
+%exclude %{_bindir}/*gfortran
+%exclude %{_bindir}/*c++
+%exclude %{_bindir}/*g++
+%{_bindir}/*
+# Libraries
+%{_lib64dir}/*
+%exclude %{_libexecdir}/gcc/%{_arch}-%{_host_vendor}-linux-gnu/%{version}/f951
+%exclude %{_libexecdir}/gcc/%{_arch}-%{_host_vendor}-linux-gnu/%{version}/cc1plus
+%{_libdir}/gcc/*
+# Library executables
+%{_libexecdir}/gcc/*
+# Man pages
+%{_mandir}/man1/gcov.1.gz
+%{_mandir}/man1/gcov-dump.1.gz
+%{_mandir}/man1/gcov-tool.1.gz
+%{_mandir}/man1/gcc.1.gz
+%{_mandir}/man1/g++.1.gz
+%{_mandir}/man1/cpp.1.gz
+%{_mandir}/man1/lto-dump.1.gz
+%{_mandir}/man7/*.gz
+%{_datadir}/gdb/*
+
+%exclude %{_lib64dir}/libgcc*
+%exclude %{_lib64dir}/libstdc++*
+%exclude %{_lib64dir}/libsupc++*
+%exclude %{_lib64dir}/libgomp*
+
+%files -n gfortran
+%defattr(-,root,root)
+%{_bindir}/*gfortran
+%{_mandir}/man1/gfortran.1.gz
+%{_libexecdir}/gcc/%{_arch}-%{_host_vendor}-linux-gnu/%{version}/f951
+
+%files -n libgcc
+%defattr(-,root,root)
+%{_lib64dir}/libgcc_s.so.*
+
+%files -n libgcc-atomic
+%defattr(-,root,root)
+%{_lib64dir}/libatomic.so*
+
+%files -n libgcc-devel
+%defattr(-,root,root)
+%{_lib64dir}/libgcc_s.so
+%{_lib64dir}/libcc1.*
+
+%files c++
+%defattr(-,root,root)
+%{_bindir}/*c++
+%{_bindir}/*g++
+%{_libexecdir}/gcc/%{_arch}-%{_host_vendor}-linux-gnu/%{version}/cc1plus
+
+%files -n libstdc++
+%defattr(-,root,root)
+%{_lib64dir}/libstdc++.so.*
+%dir %{_datarootdir}/gcc-%{version}/python/libstdcxx
+%{_datarootdir}/gcc-%{version}/python/libstdcxx/*
+
+%files -n libstdc++-devel
+%defattr(-,root,root)
+%{_lib64dir}/libstdc++.so
+%{_lib64dir}/libstdc++.la
+%{_lib64dir}/libstdc++.a
+%{_lib64dir}/libstdc++fs.a
+%{_lib64dir}/libsupc++.a
+%{_lib64dir}/libsupc++.la
+
+%{_includedir}/c++/*
+
+%files -n libgomp
+%defattr(-,root,root)
+%{_lib64dir}/libgomp*.so.*
+
+%files -n libgomp-devel
+%defattr(-,root,root)
+%{_lib64dir}/libgomp.a
+%{_lib64dir}/libgomp.la
+%{_lib64dir}/libgomp.so
+%{_lib64dir}/libgomp.spec
+
+%changelog
+* Tue Jan 25 2022 Thomas Crain <thcrain@microsoft.com> - 11.2.0-2
+- Add provides for libasan, liblsan, libtsan, and libubsan (and their static counterparts) to the main package
+- Remove CVE-2019-15847 nopatch file (not relevant to our version of GCC)
+
+* Mon Oct 18 2021 Andrew Phelps <anphel@microsoft.com> - 11.2.0-1
+- Update to version 11.2.0
+
+* Fri Feb 05 2021 Joe Schmitt <joschmit@microsoft.com> - 9.1.0-11
+- Replace incorrect %%{_lib} usage with %%{_libdir}
+
+* Fri Jan 08 2021 Ruying Chen <v-ruyche@microsoft.com> - 9.1.0-10
+- Provide libquadmath and libquadmath-devel.
+
+* Tue Nov 03 2020 Joe Schmitt <joschmit@microsoft.com> - 9.1.0-9
+- Provide gcc-plugin-devel.
+
+* Mon Sep 28 2020 Ruying Chen <v-ruyche@microsoft.com> 9.1.0-8
+- Split gcc-c++ subpackage.
+- Provide cpp, gcc-gfortran, libatomic, and listdc++-static.
+
+* Thu Sep 10 2020 Thomas Crain <thcrain@microsoft.com> - 9.1.0-7
+- Ignore CVE-2019-15847, as it applies to an unsupported ISA
+
+* Mon Jul 06 2020 Henry Beberman <henry.beberman@microsoft.com> - 9.1.0-6
+- Comment out with_check BuildRequires to break circular dependency in build graph.
+
+* Thu Jun 11 2020 Henry Beberman <henry.beberman@microsoft.com> - 9.1.0-5
+- Disable -Werror=format-security to build with hardened cflags
+
+* Sat May 09 2020 Nick Samson <nisamson@microsoft.com> - 9.1.0-4
+- Added %%license line automatically
+
+* Thu Apr 30 2020 Emre Girgin <mrgirgin@microsoft.com> - 9.1.0-3
+- Renaming mpc to libmpc
+
+* Thu Apr 09 2020 Emre Girgin <mrgirgin@microsoft.com> - 9.1.0-2
+- Add the "--enable-default-pie" flag in order to enforce ASLR-enabled binaries.
+
+* Tue Mar 17 2020 Andrew Phelps <anphel@microsoft.com> - 9.1.0-1
+- Update to version 9.1.0. License verified. Add libstdc++fs.a
+
+* Tue Jan 21 2020 Andrew Phelps <anphel@microsoft.com> - 7.3.0-6
+- Fixing build issues for multiple architectures
+
+* Tue Sep 03 2019 Mateusz Malisz <mamalisz@microsoft.com> - 7.3.0-5
+- Initial CBL-Mariner import from Photon (license: Apache2).
+
+* Fri Nov 02 2018 Alexey Makhalov <amakhalov@vmware.com> - 7.3.0-4
+- Use nofortify security_hardening instead of sed hacking
+- Use %configure
+
+* Wed Sep 19 2018 Alexey Makhalov <amakhalov@vmware.com> - 7.3.0-3
+- Fix compilation issue for glibc-2.28
+
+* Thu Aug 30 2018 Keerthana K <keerthanak@vmware.com> - 7.3.0-2
+- Packaging .a files (libstdc++-static files).
+
+* Wed Aug 01 2018 Srivatsa S. Bhat <srivatsa@csail.mit.edu> - 7.3.0-1
+- Update to version 7.3.0 to get retpoline support.
+
+* Tue Nov 14 2017 Alexey Makhalov <amakhalov@vmware.com> - 6.3.0-7
+- Aarch64 support
+
+* Mon Oct 02 2017 Alexey Makhalov <amakhalov@vmware.com> - 6.3.0-6
+- Added smp_mflags for parallel build
+
+* Mon Sep 25 2017 Alexey Makhalov <amakhalov@vmware.com> - 6.3.0-5
+- Enable elfdeps for libgcc_s to generate libgcc_s.so.1(*)(64bit) provides
+
+* Mon Aug 28 2017 Alexey Makhalov <amakhalov@vmware.com> - 6.3.0-4
+- Fix makecheck
+
+* Tue Aug 15 2017 Alexey Makhalov <amakhalov@vmware.com> - 6.3.0-3
+- Fix compilation issue for glibc-2.26
+
+* Tue Aug 15 2017 Alexey Makhalov <amakhalov@vmware.com> - 6.3.0-2
+- Improve make check
+
+* Thu Mar 9 2017 Alexey Makhalov <amakhalov@vmware.com> - 6.3.0-1
+- Update version to 6.3
+
+* Thu Mar 02 2017 Xiaolin Li <xiaolinl@vmware.com> - 5.3.0-6
+- Enabled fortran.
+
+* Wed Feb 22 2017 Alexey Makhalov <amakhalov@vmware.com> - 5.3.0-5
+- Added new plugin entry point: PLUGIN_TYPE_CAST (.patch)
+
+* Thu Sep  8 2016 Alexey Makhalov <amakhalov@vmware.com> - 5.3.0-4
+- Enable plugins and linker build id.
+
+* Tue May 24 2016 Priyesh Padmavilasom <ppadmavilasom@vmware.com> - 5.3.0-3
+- GA - Bump release of all rpms
+
+* Tue May 17 2016 Anish Swaminathan <anishs@vmware.com> - 5.3.0-2
+- Change package dependencies
+
+* Mon Mar 28 2016 Alexey Makhalov <amakhalov@vmware.com> - 5.3.0-1
+- Update version to 5.3
+
+* Tue Nov 10 2015 Xiaolin Li <xiaolinl@vmware.com> - 4.8.2-6
+- Handled locale files with macro find_lang
+
+* Mon Nov 02 2015 Vinay Kulkarni <kulkarniv@vmware.com> - 4.8.2-5
+- Put libatomic.so into its own package.
+
+* Wed May 20 2015 Touseef Liaqat <tliaqat@vmware.com> - 4.8.2-4
+- Updated group.
+
+* Mon May 18 2015 Touseef Liaqat <tliaqat@vmware.com> - 4.8.2-3
+- Update according to UsrMove.
+
+* Fri May 15 2015 Divya Thaluru <dthaluru@vmware.com> - 4.8.2-2
+- Packaging .la files
+
+* Tue Apr 01 2014 baho-utot <baho-utot@columbus.rr.com> - 4.8.2-1
+- Initial build. First version
diff --git a/.github/actions/build-composite/action.yaml b/.github/actions/build-composite/action.yaml
new file mode 100644
index 00000000000..21d2e4b6f02
--- /dev/null
+++ b/.github/actions/build-composite/action.yaml
@@ -0,0 +1,42 @@
+# Composite yaml that's re-usable in multiple workflows to build gcc
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+inputs:
+  configjson:
+    description: 'Config object converted into json'
+    required: true
+    default: ''
+runs:
+  using: "composite"
+  steps: 
+    - name: Build gcc
+      run: | 
+        chmod +x .github/scripts/gccWorkflow.py
+        echo "$PYTHONPATH"
+        export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+        echo "$PYTHONPATH"
+        python -c 'import sys; from gccWorkflow import *; GccWorkflow.Build(sys.argv[1])' "${CONFIG_JSON}"
+      shell: bash
+      env:
+        CONFIG_JSON: ${{ inputs.configJson }}
\ No newline at end of file
diff --git a/.github/actions/build-tarball/action.yaml b/.github/actions/build-tarball/action.yaml
new file mode 100644
index 00000000000..3949c37b7f7
--- /dev/null
+++ b/.github/actions/build-tarball/action.yaml
@@ -0,0 +1,89 @@
+# Composite yaml to rebase to upstream gcc master
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+name: "build-tarball"
+description: "Build tar.xz release of gcc"
+runs:
+  using: "composite"
+  steps:
+
+    # This step will set an environment variable for branch name.
+    # e.g. branch_name=releases/gcc-11
+    - name: Set Environment Variable For Branch Name
+      shell: bash
+      run: echo "branch_name=${{ github.head_ref || github.ref_name }}" >> $GITHUB_ENV
+
+    # This step will set an environment variable for release name.
+    # e.g. release_version=11.2.1
+    - name: Set Environment Variable For Release Version
+      shell: bash
+      working-directory: ./gcc
+      run: echo "release_version=$(git show origin/${{ env.branch_name }}:gcc/BASE-VER)" >> $GITHUB_ENV
+
+    # This is only to fix a bug in CBL-Mariner build procedure.
+    # Eventually we will be able to delete this step. 
+    - name: Create Include Dir # to fix building GCC gfortran bug in Mariner
+      run: |
+        mkdir -p /usr/lib/gfortran/modules
+      shell: bash
+
+    # Update the package manager.
+    - name: TDNF Update
+      run: |
+        unset HOME && tdnf update -y
+      shell: bash
+
+    # Enable mariner-repos-extended repo. 
+    # In newer versions of CBL-Mariner, you have to enable this repo to install libdwarf and a few other packages.
+    - name: TDNF Install mariner-repos-extended
+      run: |
+        unset HOME && tdnf install -y mariner-repos-extended
+      shell: bash
+
+    # Install required packages. These packages are required to build gcc and create a RPM.
+    - name: Install Required Packages
+      run: |
+        unset HOME && tdnf install glibc-devel file dejagnu texinfo build-essential rpm-build git ca-certificates wget flex bison gdb gawk libgomp-devel gfortran libgomp lapack libdwarf make sudo autoconf automake libstdc++ libstdc++-devel sed  gmp-devel mpfr-devel libmpc-devel lynx -y
+      shell: bash
+
+    # In our fork of gcc_release script, gcc_release clones the repository locally.
+    # Because of that we need the release branch we are building to be available locally.
+    - name: Enable Release Branch Locally
+      working-directory: ./gcc
+      run: |
+        git fetch origin ${{ env.branch_name }}:${{ env.branch_name }}
+      shell: bash
+
+    # This is just running gcc_relase script with bare minimum flags.
+    # The flags are :
+    # -f : build is final (don't append "snapshot" to the end of tar.xz files).
+    # -r : release version.
+    # -l : it runs locally (do not fork from a repository).
+    # -c : clone the target branch locally.
+    # -d : destination directory for gcc-$(release_version).tar.xz.
+    # for more information about the flags, take a look at the commit pushing gcc_release to .github/scripts/gcc_release
+    # WARNING: This is going to take a long long time. Go get a coffee, watch a tv show and/or sleep. 
+    - name: Run gcc_release Script 
+      working-directory: ./gcc
+      run: ./.github/scripts/gcc_release -f -r ${{ env.release_version }} -c -l -d ~/ sources tarfiles
+      shell: sh
diff --git a/.github/actions/print-gcc-testset/action.yaml b/.github/actions/print-gcc-testset/action.yaml
new file mode 100644
index 00000000000..8b4f18a540c
--- /dev/null
+++ b/.github/actions/print-gcc-testset/action.yaml
@@ -0,0 +1,38 @@
+# Composite yaml that prints the GCC test set so it can be used as a YAML matrix variable for running tests
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+outputs:
+  testSet:
+    description: 'GCC test set in JSON representation'
+    value: ${{ steps.printGCCTestSet.outputs.testSet }}
+runs:
+  using: "composite"
+  steps:
+    - name: Print GCC test set
+      id: printGCCTestSet
+      run: | 
+        chmod +x .github/scripts/gccWorkflow.py
+        export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+        python -c 'import sys; from gccWorkflow import *; GccWorkflow.PrintTestSet()'
+      shell: bash
diff --git a/.github/actions/pull-master-upstream/action.yaml b/.github/actions/pull-master-upstream/action.yaml
new file mode 100644
index 00000000000..0b589c87e7a
--- /dev/null
+++ b/.github/actions/pull-master-upstream/action.yaml
@@ -0,0 +1,50 @@
+# Composite yaml to add the upstream gcc remote and checkout from their master branch
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+inputs:
+  masterRef:
+    description: 'Reference off of gcc/master to sync to'
+    required: false
+    default: 'gcc/master'
+  scriptsRef:
+    description: 'Commit reference to checkout .github scripts from'
+    required: true
+    default: ''
+
+runs:
+  using: "composite"
+  steps: 
+    - name: Initialize environment and checkout from ${{ inputs.masterRef }}
+      run: |
+        python -m pip install requests
+        chmod +x .github/scripts/common.py
+        export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+        python -c 'from common import *; RunScript(".github/scripts/init.sh", True)'
+        git fetch gcc master        
+        python -c 'import sys; from common import *; RunScript(".github/scripts/checkout-refs.sh", True, sys.argv[1], sys.argv[2])' "${MASTER_REF}" "${SCRIPTS_REF}"
+        git log -1
+      shell: bash
+      env:
+        SCRIPTS_REF: ${{ inputs.scriptsRef }}
+        MASTER_REF: ${{ inputs.masterRef }}
\ No newline at end of file
diff --git a/.github/actions/rebase-gcc-master/action.yaml b/.github/actions/rebase-gcc-master/action.yaml
new file mode 100644
index 00000000000..941ae85a822
--- /dev/null
+++ b/.github/actions/rebase-gcc-master/action.yaml
@@ -0,0 +1,50 @@
+# Composite yaml to rebase to upstream gcc master
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+runs:
+  using: "composite"
+  steps: 
+    - name: Initialize environment
+      run: |
+        python -m pip install requests
+        chmod +x .github/scripts/common.py
+        export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+        python -c 'from common import *; RunScript(".github/scripts/init.sh", True)'
+      shell: bash
+    - name: Fetch
+      run: |
+        git fetch gcc master
+      shell: bash
+    - name: Rebase
+      run: |
+        git log gcc/master -1
+        git config --global user.email "erozen@microsoft.com"
+        git config --global user.name "Eugene Rozenfeld"
+        git rebase gcc/master
+      shell: bash
+    - name: Check commits
+      run: |
+        git status
+        git log -15
+      shell: bash
diff --git a/.github/actions/setup-vendor-branches/action.yaml b/.github/actions/setup-vendor-branches/action.yaml
new file mode 100644
index 00000000000..415165a1b78
--- /dev/null
+++ b/.github/actions/setup-vendor-branches/action.yaml
@@ -0,0 +1,52 @@
+# Composite yaml to add the upstream gcc remote, setup the vendor branches and checkout the specified vendor branch
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+inputs:
+  vendorRef:
+    description: 'Reference off of gcc/master to sync to'
+    required: true
+    default: ''
+  scriptsRef:
+    description: 'Commit reference to checkout .github scripts from'
+    required: true
+    default: ''
+
+runs:
+  using: "composite"
+  steps: 
+    - name: Initialize environment and checkout from vendor branch
+      run: |
+        python -m pip install requests
+        chmod +x .github/scripts/common.py
+        export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+        python -c 'from common import *; RunScript(".github/scripts/init.sh", True)'
+        echo -e "MS Automation\ngnutools@microsoft.com\ngcc\nMSAutomation\nme\nyes" > gitCustomization.txt
+        cat "gitCustomization.txt" | contrib/gcc-git-customization.sh
+        python -c 'from common import *; RunScript("contrib/git-fetch-vendor.sh", True, "microsoft")'
+        git branch -a
+        python -c 'import sys; from common import *; RunScript(".github/scripts/checkout-refs.sh", True, sys.argv[1], sys.argv[2])' "${VENDOR_REF}" "${SCRIPTS_REF}"
+      shell: bash
+      env:
+        SCRIPTS_REF: ${{ inputs.scriptsRef }}
+        VENDOR_REF: ${{ inputs.vendorRef }}
diff --git a/.github/actions/test-composite/action.yaml b/.github/actions/test-composite/action.yaml
new file mode 100644
index 00000000000..92aaaee4ecf
--- /dev/null
+++ b/.github/actions/test-composite/action.yaml
@@ -0,0 +1,64 @@
+# Composite yaml that's re-usable in multiple workflows to run gcc tests
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+inputs:
+  configjson:
+    description: 'Config object converted into json'
+    required: true
+    default: ''
+  testSet:
+    description: 'gcc test set to run'
+    required: true
+    default: ''
+  githubtoken:
+    description: 'GitHub auth token'
+    required: true
+    default: ''
+  buildDownloaded:
+    description: 'Whether the build is already available on the machine this composite action is running on'
+    required: true
+    default: true
+outputs:
+  configJson:
+    description: 'Config object that may have been updated'
+    value: ${{ steps.runTests.outputs.noSecretConfigJson }}
+runs:
+  using: "composite"
+  steps:
+    - name: Download build and run tests
+      id: runTests
+      run: | 
+        chmod +x .github/scripts/gccWorkflow.py
+        echo "$PYTHONPATH"
+        echo "$CONFIG_JSON"
+        export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+        echo "$PYTHONPATH"
+        echo "$BUILD_DOWNLOADED"
+        python -c 'import sys; from gccWorkflow import *; GccWorkflow.Test(sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4])' "${CONFIG_JSON}" "${TEST_SET}" "${GITHUB_TOKEN}" "${BUILD_DOWNLOADED}"
+      shell: bash
+      env:
+        CONFIG_JSON: ${{ inputs.configJson }}
+        TEST_SET: ${{ inputs.testSet }}
+        GITHUB_TOKEN: ${{ inputs.githubtoken }}
+        BUILD_DOWNLOADED: ${{ inputs.buildDownloaded }}
diff --git a/.github/scripts/build-gcc.sh b/.github/scripts/build-gcc.sh
new file mode 100644
index 00000000000..d55cc37c26c
--- /dev/null
+++ b/.github/scripts/build-gcc.sh
@@ -0,0 +1,41 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+cd ../objdir
+$PWD/../gcc/configure --prefix=$HOME/GCC --enable-languages=c,c++,fortran
+
+exit_code=$?
+if [ $exit_code != 0 ]; then
+    exit $exit_code
+fi
+
+make -j$(nproc)
+exit_code=$?
+if [ $exit_code != 0 ]; then
+    exit $exit_code
+fi
+
+sudo make install
+exit_code=$?
+if [ $exit_code != 0 ]; then
+    exit $exit_code
+fi
\ No newline at end of file
diff --git a/.github/scripts/checkout-refs.sh b/.github/scripts/checkout-refs.sh
new file mode 100644
index 00000000000..bdbdf829e40
--- /dev/null
+++ b/.github/scripts/checkout-refs.sh
@@ -0,0 +1,42 @@
+# $1 is the reference to use for checking out GCC sources
+# $2 is the reference to use for checking out the .github scripts
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+git checkout $1 -f
+exit_code=$?
+if [ $exit_code != 0 ]; then
+    exit $exit_code
+fi
+
+git fetch origin +refs/pull/*:refs/remotes/origin/refs/pull/*
+exit_code=$?
+if [ $exit_code != 0 ]; then
+    exit $exit_code
+fi
+
+git checkout $2 -- .github/
+exit_code=$?
+if [ $exit_code != 0 ]; then
+    exit $exit_code
+fi
\ No newline at end of file
diff --git a/.github/scripts/common.py b/.github/scripts/common.py
new file mode 100644
index 00000000000..58de82132d9
--- /dev/null
+++ b/.github/scripts/common.py
@@ -0,0 +1,84 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import globals
+import logging
+import subprocess
+import requests
+import time
+
+# Exception class to raise when a basic workflow error happens
+class WorkflowError(Exception):
+    pass
+
+def GetLogger():
+    if (globals.logger == None):
+        logging.basicConfig(level=logging.NOTSET)
+        logging.root.setLevel(logging.DEBUG)
+        globals.logger = logging.getLogger()
+        globals.logger.setLevel(logging.DEBUG)
+    return globals.logger
+
+def RaiseWorkflowError(error):
+    logging.shutdown()
+    raise WorkflowError(error)
+
+# This name needs to match what's in the build.yaml file
+def GetGccBuildName():
+    return 'build'
+
+def GetandPrintCurrentSHA():
+    res = subprocess.run('git rev-parse HEAD', shell=True, check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+
+    # Output for Github to pick up output for future jobs
+    print("::set-output name=currentSHA::" + str(res.stdout, 'utf-8'))
+
+def SendGetRestCmd(restCmd, restArgs, restHeader):
+    logger = GetLogger()
+    retryCount = 10
+    while True:
+        res = requests.get(restCmd, params=restArgs, headers=restHeader)
+        if res.ok:
+            return res
+
+        # Retry the command after a sleep
+        sleepTimeSeconds = 30
+        logger.error("Sleeping for " + str(sleepTimeSeconds) + " seconds before retrying " + restCmd)
+        time.sleep(sleepTimeSeconds)
+
+        retryCount = retryCount - 1
+        if retryCount == 0:
+            RaiseWorkflowError("Max retry count hit with " + restCmd)
+
+# Run the provided script with the provided arguments
+def RunScript(scriptPath, failOnNonZeroReturn, *args):
+    argsStr = ""
+    for a in args:
+        argsStr += " "
+        argsStr += a
+
+    res = subprocess.run('''
+        chmod +x ''' + scriptPath + '''
+        ''' + scriptPath + argsStr,
+        shell=True, check=failOnNonZeroReturn, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+
+    return res
\ No newline at end of file
diff --git a/.github/scripts/config.py b/.github/scripts/config.py
new file mode 100644
index 00000000000..709e340c4cc
--- /dev/null
+++ b/.github/scripts/config.py
@@ -0,0 +1,116 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import json
+from json import JSONEncoder
+import globals
+from common import *
+from downloadBuildArtifact import *
+import sys
+
+# subclass JSONEncoder to convert the Config object into JSON
+class ConfigEncoder(JSONEncoder):
+    def default(self, o):
+        return o.__dict__
+
+class Config(object):
+
+    def __init__(self, sha, token, buildArtifactID, workflowRunID, failedWorkflowErrorStr, failedWorkflowReturnCode):
+        self.commitSHA = sha                              # Commit SHA for the checkin
+        self.accessToken = token                          # Access token for REST APIs
+        self.gccBuildArtifactID = buildArtifactID         # GCC Build artifact ID
+        self.runID = workflowRunID                        # Run ID of workflow (not job) that ran Setup()
+        self.failedWorkflowError = failedWorkflowErrorStr # Whether or not the workflow failed
+        self.failedReturnCode = failedWorkflowReturnCode  # Failed workflow error code
+        logger = GetLogger()
+        logger.info('creating an instance of Config')
+
+    @staticmethod
+    def Setup(githubObject, accessToken, isBuild):
+        logger = GetLogger()
+        
+        logger.debug("In Setup")
+        logger.debug("---")
+        logger.debug("Github object = " + githubObject)
+        githubJson = json.loads(githubObject)
+        logger.debug(githubJson["event"])
+        commit = githubJson["sha"]
+        if ("pull_request" in githubJson["event"]):
+            commit = githubJson["event"]["pull_request"]["head"]["sha"]
+
+        runID = githubJson["run_id"]
+                
+        logger.info("SHA = " + commit)
+        workflowName = githubJson["workflow"]
+
+        # If this isn't a GCC build, wait for the GCC build to complete with the needed artifacts
+        if (not isBuild):
+            gccBuildArtifactID = WaitOnGccBuild(commit, accessToken)
+        else:
+            gccBuildArtifactID = 0
+
+        # Construct Config object
+        newConfig = Config(commit, accessToken, gccBuildArtifactID, runID, '', 0)
+        configJson = json.dumps(newConfig, cls=ConfigEncoder)
+
+        # Output for Github to pick up output for future steps
+        print("::set-output name=configJson::" + configJson)
+
+        # Set global config object
+        globals.configObj = newConfig
+
+    @staticmethod
+    def PrintNoSecretConfigJson():
+        # GitHub won't allow the printing of strings with secrets in them for future jobs
+        # so we need to clear out any secrets in our config object prior to printing it
+
+        # Clear out the access token field
+        globals.configObj.accessToken = globals.configObj.accessToken.replace(globals.configObj.accessToken, '')
+        configJson = json.dumps(globals.configObj, cls=ConfigEncoder)
+
+        # Output for Github to pick up output for future jobs
+        print("::set-output name=noSecretConfigJson::" + configJson)
+
+    @staticmethod
+    def PrintNoSecretConfigJsonFromJson(configJson):
+        Config.Reload(configJson)
+        Config.PrintNoSecretConfigJson()
+
+    @staticmethod
+    def Reload(configJson, accessToken=""):
+        loadedJson = json.loads(configJson)
+        
+        # If no access token is provided, use the one in the config already
+        # This is possible in cases where the config setup and reload functions are run on the same machine
+        if (accessToken==""):
+            accessToken=loadedJson["accessToken"]
+
+        # Set global config object
+        globals.configObj = Config(loadedJson["commitSHA"], accessToken, loadedJson["gccBuildArtifactID"], loadedJson["runID"], loadedJson["failedWorkflowError"], loadedJson["failedReturnCode"])
+        
+    @staticmethod
+    def RaiseErrorIfWorkflowFailed():
+        if (globals.configObj.failedWorkflowError):
+            logger = GetLogger()
+            logger.error(globals.configObj.failedWorkflowError)
+            logging.shutdown()
+            sys.exit(globals.configObj.failedReturnCode)
diff --git a/.github/scripts/configure-gcc.sh b/.github/scripts/configure-gcc.sh
new file mode 100644
index 00000000000..69434f8a7bd
--- /dev/null
+++ b/.github/scripts/configure-gcc.sh
@@ -0,0 +1,41 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+sudo apt update
+
+# Install gcc 7 and g++ 7
+sudo apt-get install gcc-7 g++-7 g++-7-multilib libstdc++-7-doc  binutils-doc build-essential cpp-doc gcc-7-doc libstdc++6-7-dbg lib32stdc++6-7-dbg libx32stdc++6-7-dbg make autoconf automake libtool flex bison gdb gawk gcc-doc gfortran libgfortran3 libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan4-dbg liblsan0-dbg libtsan0-dbg libubsan0-dbg libcilkrts5-dbg libmpx2-dbg libquadmath0-dbg glibc-doc python lynx -y
+
+# Redirect gcc and g++ to the installed versions
+sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 60 
+sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-7 60
+
+# Redirect cc and c++ to the installed gcc and g++ versions:		
+sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc 30
+sudo update-alternatives --set cc /usr/bin/gcc
+		
+sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++ 30
+sudo update-alternatives --set c++ /usr/bin/g++
+
+sudo apt install -y texinfo
+sudo apt-get install -y dejagnu
+./contrib/download_prerequisites
\ No newline at end of file
diff --git a/.github/scripts/delete-branches.sh b/.github/scripts/delete-branches.sh
new file mode 100644
index 00000000000..93582f1e4af
--- /dev/null
+++ b/.github/scripts/delete-branches.sh
@@ -0,0 +1,25 @@
+# Deletes branches that match the regex and are older than the maximum acceptable branch age
+# $1 is the regex to match the branch to
+# $2 is the maximum acceptable branch age
+
+branchesStr=$(git for-each-ref --format='%(refname:short) %(committerdate:relative)' --sort=-committerdate   refs/remotes/origin)
+readarray -t branches <<<"$branchesStr"
+maxAcceptableDateInSecs=$(date -d "$2 days ago" +%s)
+regexMatch=$1
+
+for (( i=0; i<${#branches[@]} ; i+=1 )) ; do
+    echo "${branches[i]}"
+    read -r branchName lastCommitRelative <<< "${branches[i]}"
+    # Remove commas in the date which can occur with older branches. e.g. "2 years, 2 months ago"
+    lastCommitRelative=$(echo "$lastCommitRelative" | sed 's;,;;' )
+    lastCommitRelativeDate=$(date -d "$lastCommitRelative" +%s)
+
+    echo "$lastCommitRelative"
+    echo "$lastCommitRelativeDate"
+    echo "$maxAcceptableDateInSecs"
+    if [ $lastCommitRelativeDate -lt $maxAcceptableDateInSecs ]
+    then
+        branchNameTrimmed=$( echo "$branchName" | sed 's;origin/;;' )
+        [[ $branchNameTrimmed =~ $regexMatch ]] && echo "Deleting branch $branchNameTrimmed" && git push origin --delete $branchNameTrimmed
+    fi
+done
\ No newline at end of file
diff --git a/.github/scripts/downloadBuildArtifact.py b/.github/scripts/downloadBuildArtifact.py
new file mode 100644
index 00000000000..45336fb4317
--- /dev/null
+++ b/.github/scripts/downloadBuildArtifact.py
@@ -0,0 +1,222 @@
+# Requirements:
+# sudo apt-get install python-pip
+# sudo apt-get install python
+# python -m pip install requests
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import requests
+import json
+from datetime import datetime
+import datetime as dt
+import zipfile
+import time
+from common import *
+import globals
+import re
+import tarfile
+import os
+import subprocess
+
+def WaitOnLatestWorkflow(branch, workflowName, accessToken, raiseErrorOnFailure):
+    logger = GetLogger()
+    logger.info("Looking for a " + workflowName + " build for branch: " + branch)
+
+    latestWorkflowTime = dt.datetime(1970, 1, 1)
+    latestWorkflowId = 0
+
+    while latestWorkflowId == 0:
+        # Look at all workflow runs on the branch
+        res = SendGetRestCmd("https://api.github.com/repos/microsoft/gcc/actions/runs?branch=" + branch, {}, {'Authorization': "token " + accessToken})
+        runs = res.json()['workflow_runs']
+
+        # This could be optimized if we can guarantee that the results are sorted. It seems like the results are sorted from most recent to least recent, but there
+        # doesn't seem to be any documentation supporting this.
+
+        for entry in runs:
+            if (entry['name'] == workflowName):
+                date = datetime.strptime(entry['created_at'], '%Y-%m-%dT%H:%M:%SZ')
+                if (latestWorkflowTime < date):
+                    latestWorkflowTime = date
+                    latestWorkflowId = entry['id']
+
+    
+    logger.info("Found workflow ID: " + str(latestWorkflowId))
+    buildCompleted = False
+    conclusion = ''
+    # Wait until latestWorkflowId completes
+    while buildCompleted == False:
+        res = SendGetRestCmd("https://api.github.com/repos/microsoft/gcc/actions/runs/" + str(latestWorkflowId), {}, {'Authorization': "token " + accessToken})
+        if res.ok:
+            resJson = res.json()
+            status = resJson['status']
+            if (status == 'completed'):
+                buildCompleted = True
+                conclusion = resJson['conclusion']
+
+        if not buildCompleted:
+            # Sleep for 30 seconds
+            sleepTimeSeconds = 30
+            logger.error("Sleeping for " + str(sleepTimeSeconds) + " seconds while waiting on build number " + str(latestWorkflowId) + " to finish")
+            time.sleep(sleepTimeSeconds)
+
+    logger.info("Run completed. Link available at:")
+    logger.info("https://github.com/microsoft/gcc/actions/runs/" + str(latestWorkflowId))
+
+    if raiseErrorOnFailure:
+        if conclusion != 'success':
+            RaiseWorkflowError("Workflow did not succeed. Conclusion was: " + conclusion)
+
+def FindGccBuildArtifact(workflowRunID, accessToken):
+    logger = GetLogger()
+    numArtifactRetries = 60
+    while True:
+        res = SendGetRestCmd("https://api.github.com/repos/microsoft/gcc/actions/runs/" + str(workflowRunID) + "/artifacts", {}, {'Authorization': "token " + accessToken})
+        logger.debug("Artifact Json:" + json.dumps(res.json()))
+
+        gccBuildArtifactID = 0
+        for artifact in res.json()['artifacts']:
+            if (artifact['name'] == "gccBuild"):
+                gccBuildArtifactID = artifact['id']
+
+        if (gccBuildArtifactID != 0):
+            break
+        elif (gccBuildArtifactID == 0 and numArtifactRetries == 0):
+            RaiseWorkflowError("No gcc build artifact found")
+
+        numArtifactRetries = numArtifactRetries-1
+
+        # We need this sleep here because even if the build job status is "completed", the gccBuild artifacts aren't
+        # immediately ready. If for some reason they aren't, sleep for a bit and retry.
+        
+        # Sleep for 30 seconds
+        sleepTimeSeconds = 30
+        logger.info("Sleeping for " + str(sleepTimeSeconds) + " seconds while waiting on artifacts for workflow run ID " + str(workflowRunID))
+        time.sleep(sleepTimeSeconds)
+
+    logger.info("GCC Build artifact ID = " + str(gccBuildArtifactID))
+    return gccBuildArtifactID
+
+def WaitOnGccBuild(commit, accessToken):
+    logger = GetLogger()
+    logger.info("Looking for a gcc build for " + commit)
+    
+    res = SendGetRestCmd("https://api.github.com/repos/microsoft/gcc/commits/" + commit + "/check-runs", {'check_name': GetGccBuildName()}, {'Authorization': "token " + accessToken})
+    checkruns = res.json()['check_runs']
+    latestBuildTime = dt.datetime(1970, 1, 1)
+    latestBuildId = 0
+
+    for entry in checkruns:
+        if (entry['name'] == GetGccBuildName()):
+            date = datetime.strptime(entry['started_at'], '%Y-%m-%dT%H:%M:%SZ')
+            
+            # take the most recent build run
+            if (latestBuildTime < date):
+                latestBuildTime = date
+                latestBuildId = entry['id']
+    
+    if (latestBuildId == 0):
+        RaiseWorkflowError("No run found")
+
+    logger.info("Found latest build workflow ID: " + str(latestBuildId))
+
+    while True:
+        # Get the run ID
+        res = SendGetRestCmd("https://api.github.com/repos/microsoft/gcc/actions/jobs/" + str(latestBuildId), {}, {'Authorization': "token " + accessToken})
+        jobJson = res.json()
+        workflowRunID = jobJson['run_id']
+
+        if jobJson['status'] == 'completed':
+            logger.debug(jobJson)
+            conclusion = jobJson['conclusion']
+            if (conclusion == 'success'):
+                break
+            else:
+                logger.error("Job conclusion is: " + conclusion)
+                RaiseWorkflowError("Build run ID " + str(latestBuildId) + " failed")
+        else:
+            # Sleep for 30 seconds
+            sleepTimeSeconds = 30
+            logger.error("Sleeping for " + str(sleepTimeSeconds) + " seconds while waiting on build number " + str(latestBuildId) + " to finish")
+            time.sleep(sleepTimeSeconds)
+
+    logger.info("Workflow run ID = " + str(workflowRunID))
+
+    gccBuildArtifactID = FindGccBuildArtifact(workflowRunID, accessToken)
+
+    return gccBuildArtifactID
+
+# Returns a list of artifact objects in the runId that match the regex
+def GetArtifactObjsInRun(runId, regex):
+    r = re.compile(regex)
+    matchedList = []
+    
+    res = SendGetRestCmd("https://api.github.com/repos/microsoft/gcc/actions/runs/" + str(runId) + "/artifacts", {}, {'Authorization': "token " + globals.configObj.accessToken})
+    artifactsList = res.json()['artifacts']
+    for artifact in artifactsList:
+        name = artifact['name']
+        if r.match(name):
+            matchedList.append(artifact)
+    
+    return matchedList
+
+def DownloadArtifact(artifactID):
+    logger = GetLogger()
+    res = SendGetRestCmd("https://api.github.com/repos/microsoft/gcc/actions/artifacts/" + str(artifactID), {}, {'Authorization': "token " + globals.configObj.accessToken})
+    name = res.json()['name']
+    zipName = name + '.zip'
+
+    res = SendGetRestCmd("https://api.github.com/repos/microsoft/gcc/actions/artifacts/" + str(artifactID) +"/zip", {}, {'Authorization': "token " + globals.configObj.accessToken})
+    
+    logger.info("Downloading " + name + " zip from artifact ID " + str(artifactID))
+    with open(zipName, 'wb') as f:
+        f.write(res.content)
+
+    logger.info("Unzipping zip")
+    with zipfile.ZipFile(zipName, 'r') as zip_ref:
+        zip_ref.extractall(name)
+    print('currentCWD')
+    print(os.getcwd())
+    logger.info("Done downloading")
+
+    return name
+
+def DownloadBuildArtifact():
+    logger = GetLogger()
+
+    if (globals.configObj.gccBuildArtifactID):
+        gccBuildArtifactID = globals.configObj.gccBuildArtifactID
+    else:
+        gccBuildArtifactID = FindGccBuildArtifact(globals.configObj.runID, globals.configObj.accessToken)
+
+    # TODO: Support downloading build artifact without a config object setup so the script can be used outside of workflows by developers
+    filename = DownloadArtifact(gccBuildArtifactID) + "/objdir.tar.gz"
+    res = subprocess.run('tar -xzf ' + filename + ' -m -C ..',
+        shell=True, check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+
+    logger.info("tar cmd output = " + str(res.stdout, 'utf-8'))
+
+    res = subprocess.run('rm ' +  filename,
+        shell=True, check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+
+    logger.info("rm cmd output = " + str(res.stdout, 'utf-8'))
diff --git a/.github/scripts/gccWorkflow.py b/.github/scripts/gccWorkflow.py
new file mode 100644
index 00000000000..411aac30434
--- /dev/null
+++ b/.github/scripts/gccWorkflow.py
@@ -0,0 +1,189 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+from config import *
+import subprocess
+from downloadBuildArtifact import *
+import sys
+import globals
+from common import *
+import os
+import json
+import glob
+
+class GccWorkflow(object):
+    # Setup the config object and wait for any runs necessary to finish before proceeding onto the next job section
+    # to avoid exceeding the 6 hr limit on Github Actions that run on Github machines
+    @staticmethod
+    def Init(githubContext, accessToken, isInitForBuild=False):
+        Config.Setup(githubContext, accessToken, isInitForBuild)
+
+    @staticmethod
+    def PrintTestSet():
+        dictionary = {
+            "testSet" : ["check-target-libstdc++-v3", "check-gcc-c++", "check-gcc-c", "check-target-libgomp", "check-target-libitm", "check-target-libatomic"]
+        }
+        dictionaryJson = json.dumps(dictionary)
+        print("::set-output name=testSet::" + dictionaryJson)
+
+    # Runs the configure script to set up gcc configuration environment prior to building and running tests
+    # Creates the objdir directory as part of this process
+    @staticmethod
+    def Configure():        
+        logger = GetLogger()
+        res = RunScript(".github/scripts/configure-gcc.sh", False)
+        logger.info("output = " + str(res.stdout, 'utf-8'))
+
+    @staticmethod
+    def MakeObjDir():
+        logger = GetLogger()
+        res = subprocess.run('''
+            cd ..
+            mkdir objdir
+            ''',
+            shell=True, check=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+
+        logger.info("output = " + str(res.stdout, 'utf-8'))
+
+    @staticmethod
+    def Build(configJson):
+        logger = GetLogger()
+        logger.info("Gcc Build start")
+        Config.Reload(configJson)
+
+        GccWorkflow.Configure()
+        GccWorkflow.MakeObjDir()
+
+        # Build
+        res = RunScript(".github/scripts/build-gcc.sh", False)
+        logger.info("build output = " + str(res.stdout, 'utf-8'))
+
+        # TODO: Add better handling of errors to display
+        if (res.returncode != 0):
+            logger.error("GCC Build failed")
+            logging.shutdown()
+            sys.exit(res.returncode)
+
+    @staticmethod
+    def Test(configJson, testSet, accessToken, buildDownloadedStr):
+        logger = GetLogger()
+        logger.info("Gcc Test start")
+
+        # Convert the input string (because that's how it's passed via the composite template) into a boolean
+        buildDownloaded = buildDownloadedStr == 'True' or buildDownloadedStr == 'true'
+        Config.Reload(configJson, accessToken)
+        
+        GccWorkflow.Configure()
+        
+        if (not buildDownloaded):
+            logger.info("Downloading gccBuild artifact from 'build' workflow...")
+            GccWorkflow.MakeObjDir()
+            try:
+                DownloadBuildArtifact()
+            except:
+                logger.error("Could not download build artifact")
+                RaiseWorkflowError("Error downloading build artifact for GCC workflow")
+        
+        # The gcc build should be in the objdir folder one level above
+        currentDir = os.getcwd()
+        assert os.path.isdir(currentDir + "/../objdir")
+        
+        # Copy over downloaded build artifact into objdir directory that was created in the configure script
+        # For more details on the subprocess function and its parameters, 
+        # see https://stackoverflow.com/questions/4256107/running-bash-commands-in-python
+        res = RunScript(".github/scripts/test-gcc.sh", False, testSet)
+        logger.info("test output = " + str(res.stdout, 'utf-8'))
+
+        # TODO: Add better handling of errors to display
+        if (res.returncode != 0):
+            globals.configObj.failedWorkflowError = "GCC Test failed"
+            globals.configObj.failedReturnCode = res.returncode
+
+        Config.PrintNoSecretConfigJson()
+           
+    @staticmethod
+    def ParseTestLogs(configJson, accessToken):
+        logger = GetLogger()
+        logger.info("GCC Parsing Test Logs")
+
+        Config.Reload(configJson, accessToken)
+
+        # Load in the tests known to fail in our vendor branch
+        with open('contrib/testsuite-management/x86_64-pc-linux-gnu.xfail') as xFailFile:
+            linesFailFile = {line.rstrip('\n') for line in xFailFile}
+
+        newFailuresToAdd = []
+
+        # Look for logs in the artifacts directory that were downloaded in the yaml via download-artifact
+        logDirs = glob.glob('artifacts/master_*_logs')
+
+        for logDir in logDirs:
+            logger.info ("Parsing log directory: " + logDir)
+
+            # Each directory should have a failures.txt file
+            assert os.path.exists(logDir + '/failures.txt')
+
+            # Create a rawFailures.txt file with just the unexpected failure lines which are between the
+            # "Unexpected results in this build" and "Expected results not present in this build" markers in the file
+            res = subprocess.run('cd ' + logDir                
+                + '''
+                sed '0,/^Unexpected results in this build/d' failures.txt > afterUnexpected.txt
+                sed '/^Expected results not present in this build/q' afterUnexpected.txt > rawFailures.txt
+                sed -r '/^\s*$/d' -i rawFailures.txt
+                ''',
+                shell=True, check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+            logger.info("sed output = " + str(res.stdout, 'utf-8'))
+
+            with open(logDir + '/rawFailures.txt') as rawFailuresFile:
+                failsInThisDir = {line.rstrip('\n') for line in rawFailuresFile}
+            newFails = failsInThisDir - linesFailFile
+
+            for newFail in newFails:
+                newFailuresToAdd.append(newFail)
+
+        if len(newFailuresToAdd) == 0:
+            logger.info("No new failures detected")
+            return
+
+        # Sort the list of failures so that they're in a predictable order
+        newFailuresToAdd.sort()
+
+        with open('contrib/testsuite-management/x86_64-pc-linux-gnu.xfail', 'a') as xFailFile:
+            logger.info("New failures found:")
+            for newFail in newFailuresToAdd:
+                logger.info(newFail)
+                xFailFile.write("\n")
+                xFailFile.write(newFail)
+
+        # Create a patch file
+        res = subprocess.run('''
+                git diff contrib/testsuite-management/x86_64-pc-linux-gnu.xfail > newFailures.patch
+                ''',
+                shell=True, check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+        logger.info("git diff output = " + str(res.stdout, 'utf-8'))
+        
+        res = subprocess.run('''
+                git add contrib/testsuite-management/x86_64-pc-linux-gnu.xfail
+                git commit -m "Update xfail with new failures"
+                ''',
+                shell=True, check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+        logger.info("git add and commit output = " + str(res.stdout, 'utf-8'))
diff --git a/.github/scripts/gcc_release b/.github/scripts/gcc_release
new file mode 100644
index 00000000000..428b439c8f9
--- /dev/null
+++ b/.github/scripts/gcc_release
@@ -0,0 +1,799 @@
+#! /bin/sh
+
+########################################################################
+#
+# File:   gcc_release
+# Author: Jeffrey Law, Bernd Schmidt, Mark Mitchell
+# Date:   2001-05-25
+#
+# Contents:
+#   Script to create a GCC release.
+#
+# Copyright (c) 2001-2020 Free Software Foundation.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+#
+########################################################################
+
+########################################################################
+# Notes
+########################################################################
+
+# Here is an example usage of this script, to create a GCC 3.0.2
+# prerelease:
+#
+#   gcc_release -r 3.0.2
+#
+# This script will automatically use the head of the release branch
+# to generate the release.
+
+########################################################################
+# Functions
+########################################################################
+
+# Issue the error message given by $@ and exit with a non-zero
+# exit code.
+
+error() {
+    echo "gcc_release: error: $@"
+    exit 1
+}
+
+# Issue the informational message given by $@.
+
+inform() {
+    echo "gcc_release: $@"
+}
+
+# Issue a usage message explaining how to use this script.
+
+usage() {
+cat <<EOF
+gcc_release -r release [-f] [further options]
+gcc_release -s name:gitbranch [further options]
+
+Options:
+
+  -r release           Version of the form X.Y or X.Y.Z.
+  -s name:gitbranch    Create a snapshot, not a real release.
+
+  -d destination       Local working directory where we will build the release
+                       (default=${HOME}).
+  -f                   Create a final release (and update ChangeLogs,...).
+  -l                   Indicate that we are running on gcc.gnu.org.
+  -p previous-tarball  Location of a previous tarball (to generate diff files).
+  -t tag               Tag to mark the release in git.
+  -u username          Username for upload operations.
+  -b local-git-repo    Local git repository to speed up cloning.
+  -c                   Indicate that the cloning should be done from the repo the script lives in.
+EOF
+    exit 1
+}
+
+# Change to the directory given by $1.
+
+changedir() {
+  cd $1 || \
+    error "Could not change directory to $1"
+}
+
+# Build the source tree that will be the basis for the release
+# in ${WORKING_DIRECTORY}/gcc-${RELEASE}.
+
+build_sources() {
+  # If the WORKING_DIRECTORY already exists, do not risk destroying it.
+  if [ -r ${WORKING_DIRECTORY} ]; then
+    error "\`${WORKING_DIRECTORY}' already exists"
+  fi
+  # Create the WORKING_DIRECTORY.
+  mkdir "${WORKING_DIRECTORY}" \
+    || error "Could not create \`${WORKING_DIRECTORY}'"
+  changedir "${WORKING_DIRECTORY}"
+
+  # Check out the sources.
+  if [ $GIT_LOCALPATH -eq 1 ]; then
+    git -C ${GCCPATH} clone ${GCCPATH} ${SOURCE_DIRECTORY} --single-branch --branch "${GITBRANCH}"
+    # Since the repo is private, we don't use this:
+    # ${GIT} clone -q -b "${GITBRANCH}" "${GITROOT}" "`basename ${SOURCE_DIRECTORY}`" || \
+        # error "Could not check out release sources"
+  elif [ -n "${GIT_REFERENCE}" ]; then
+    ${GIT} clone -q --dissociate --reference "${GIT_REFERENCE}" \
+		 -b "${GITBRANCH}" "${GITROOT}" "`basename ${SOURCE_DIRECTORY}`" || \
+        error "Could not check out release sources"
+  else
+    ${GIT} clone -q -b "${GITBRANCH}" "${GITROOT}" "`basename ${SOURCE_DIRECTORY}`" || \
+        error "Could not check out release sources"
+  fi
+
+  # If this is a final release and it is not custom repository, make sure that the ChangeLogs
+  # and version strings are updated.
+  if [ ${FINAL} -ne 0 ] && [ $GIT_LOCALPATH -eq 0 ]; then
+    inform "Updating ChangeLogs and version files"
+
+    grep -q "gcc-${RELEASE_MAJOR}/index.html gcc-${RELEASE_MAJOR}/changes.html" \
+	 ${SOURCE_DIRECTORY}/contrib/gennews ||\
+	   error "New release not listed in contrib/gennews"
+
+    ${SOURCE_DIRECTORY}/contrib/gennews > NEWS ||\
+	   error "Could not regenerate NEWS files"
+
+    grep -q "no releases of GCC ${RELEASE_MAJOR} have yet been made" NEWS &&\
+	   error "gcc-${RELEASE_MAJOR}/index.html has not been updated yet"
+
+    grep -q "GCC ${RELEASE_MAJOR} has not been released yet" NEWS &&\
+	   error "gcc-${RELEASE_MAJOR}/changes.html has not been updated yet"
+
+    thisindex="http:\/\/gcc.gnu.org\/gcc-${RELEASE_MAJOR}\/index.html"
+    thischanges="http:\/\/gcc.gnu.org\/gcc-${RELEASE_MAJOR}\/changes.html"
+    previndex="http:\/\/gcc.gnu.org\/gcc-`expr ${RELEASE_MAJOR} - 1`\/index.html"
+    sed -n -e "/^${thisindex}/,/^${thischanges}/p" NEWS |\
+	   sed -n -e "/Release History/,/References and Acknowledgments/p" |\
+	   grep -q "^[[:blank:]]*GCC ${RELEASE_MAJOR}.${RELEASE_MINOR}" ||\
+	   error "GCC ${RELEASE_MAJOR}.${RELEASE_MINOR} not mentioned "\
+		 "in gcc-${RELEASE_MAJOR}/index.html"
+
+    sed -n -e "/^${thischanges}/,/^${previndex}/p" NEWS |\
+	   grep -q "^[[:blank:]]*GCC ${RELEASE_MAJOR}.${RELEASE_MINOR}" ||\
+	   error "GCC ${RELEASE_MAJOR}.${RELEASE_MINOR} not mentioned "\
+		 "in gcc-${RELEASE_MAJOR}/changes.html"
+
+    rm -f NEWS
+
+    commit_files=""
+    for x in `changedir ${SOURCE_DIRECTORY} && \
+	      find . -name ChangeLog`; do
+      # Update this ChangeLog file only if it does not yet contain the
+      # entry we are going to add.  (This is a safety net for repeated
+      # runs of this script for the same release.)
+      if ! grep "GCC ${RELEASE} released." ${SOURCE_DIRECTORY}/${x} > /dev/null ; then       
+	cat - ${SOURCE_DIRECTORY}/${x} > ${SOURCE_DIRECTORY}/${x}.new <<EOF
+${LONG_DATE}  Release Manager
+
+	* GCC ${RELEASE} released.
+
+EOF
+	mv ${SOURCE_DIRECTORY}/${x}.new ${SOURCE_DIRECTORY}/${x} \
+	  || error "Could not update ${x}"
+	commit_files="${commit_files} ${x}"
+      fi
+    done
+
+    # Update gcc/DEV-PHASE.
+
+    if [ `cat ${SOURCE_DIRECTORY}/gcc/BASE-VER` != ${RELEASE} ]; then
+      [ ${RELEASE_MAJOR} -lt 5 ] && \
+	error "Release number ${RELEASE} does not match BASE-VER"
+      if [ `cat ${SOURCE_DIRECTORY}/gcc/BASE-VER` \
+	   = ${RELEASE_MAJOR}.`expr ${RELEASE_MINOR} - 1`.1 \
+	   -a x${RELEASE_REVISION} = x0 ]; then
+	(changedir ${SOURCE_DIRECTORY}/gcc && \
+	 echo ${RELEASE} > BASE-VER) || \
+	error "Could not update BASE-VER"
+	commit_files="${commit_files} gcc/BASE-VER"
+      else
+	error "Release number ${RELEASE} does not immediately follow BASE-VER"
+      fi
+    fi
+    (changedir ${SOURCE_DIRECTORY}/gcc && \
+     : > DEV-PHASE) || \
+    error "Could not update DEV-PHASE"
+    commit_files="${commit_files} gcc/DEV-PHASE"
+
+    (changedir ${SOURCE_DIRECTORY} && \
+     ${GIT} commit -q -m 'Update ChangeLog and version files for release' ${commit_files} && \
+     ${GIT} push) || \
+    error "Could not commit ChangeLog and version file updates"
+
+    # Make sure we tag the sources for a final release.
+    TAG="releases/gcc-${RELEASE}"
+  fi
+
+  # Tag the sources.
+  if [ -n "${TAG}" ]; then
+    inform "Tagging sources as ${TAG}"
+    # We don't want to overwrite an existing tag.  So, if the tag
+    # already exists, issue an error message; the release manager can
+    # manually remove the tag if appropriate.
+    if (changedir ${SOURCE_DIRECTORY} && \
+	${GIT} rev-parse "refs/tags/${TAG}" > /dev/null 2>&1); then
+      error "Tag ${TAG} already exists"
+    fi
+    (changedir ${SOURCE_DIRECTORY} && \
+     ${GIT} tag -s -m "GCC ${RELEASE} release" "${TAG}" && \
+     ${GIT} push origin tag "${TAG}") || \
+      error "Could not tag sources"
+    GITBRANCH=${TAG}
+  fi
+
+  GITREV=`cd ${SOURCE_DIRECTORY} && ${GIT} rev-parse HEAD`
+  inform "Sources are commit ${GITREV}"
+
+  # Make sure there are no uncommitted changes in the sources.
+  status=${WORKING_DIRECTORY}/gitstatus.$$
+  (changedir ${SOURCE_DIRECTORY} && \
+   ${GIT} status --porcelain --ignored > "$status") || \
+    error "Could not get source directory status"
+  if [ -s "$status" ]; then
+    cat "$status"
+    error "Source directory has unexpected changes"
+  fi
+  rm "$status"
+
+  # Remove .git from the sources.
+  rm -rf "${SOURCE_DIRECTORY}/.git" || \
+    error "Could not remove .git from sources"
+
+  # Run gcc_update on them to set up the timestamps nicely, and (re)write
+  # the LAST_UPDATED file containing the git tag/revision used.
+  changedir "gcc-${RELEASE}"
+  contrib/gcc_update --touch
+  echo "Obtained from git: ${GITBRANCH} revision ${GITREV}" > LAST_UPDATED
+
+  # For a prerelease or real release, we need to generate additional
+  # files not present in git.
+  changedir "${SOURCE_DIRECTORY}"
+  if [ $SNAPSHOT -ne 1 ]; then
+    # Generate the documentation.
+    inform "Building install docs"
+    SOURCEDIR=${SOURCE_DIRECTORY}/gcc/doc
+    DESTDIR=${SOURCE_DIRECTORY}/INSTALL
+    export SOURCEDIR
+    export DESTDIR
+    ${SOURCE_DIRECTORY}/gcc/doc/install.texi2html
+
+    # Regenerate the NEWS file.
+    contrib/gennews > NEWS || \
+      error "Could not regenerate NEWS files"
+
+    # Now, we must build the compiler in order to create any generated
+    # files that are supposed to go in the source directory.  This is
+    # also a good sanity check to make sure that the release builds
+    # on at least one platform.
+    inform "Building compiler"
+    OBJECT_DIRECTORY=../objdir
+    num_cpus=1
+    if type -p getconf 2>/dev/null; then
+      num_cpus=`getconf _NPROCESSORS_ONLN 2>/dev/null`
+      case "$num_cpus" in
+	'' | 0* | *[!0-9]*) num_cpus=1;;
+      esac
+    fi
+    contrib/gcc_build -d ${SOURCE_DIRECTORY} -o ${OBJECT_DIRECTORY} \
+      -c "--enable-generated-files-in-srcdir --disable-multilib" \
+      -m "-j$num_cpus" build || \
+      error "Could not rebuild GCC"
+  fi
+
+  # Move message catalogs to source directory.
+  mv ../objdir/gcc/po/*.gmo gcc/po/
+  [ -f libcpp/po/cpplib.pot ] && mv ../objdir/libcpp/po/*.gmo libcpp/po/
+
+  # Create a "MD5SUMS" file to use for checking the validity of the release.
+  echo \
+"# This file contains the MD5 checksums of the files in the 
+# gcc-"${RELEASE}".tar.xz tarball.
+#
+# Besides verifying that all files in the tarball were correctly expanded,
+# it also can be used to determine if any files have changed since the
+# tarball was expanded or to verify that a patchfile was correctly applied.
+#
+# Suggested usage:
+# md5sum -c MD5SUMS | grep -v \"OK$\"
+#" > MD5SUMS
+
+  find . -type f |
+  sed -e 's:^\./::' -e '/MD5SUMS/d' |
+  sort |
+  xargs md5sum >>MD5SUMS
+}
+
+# Build a single tarfile.  The first argument is the name of the tarfile
+# to build, without any suffixes.  They will be added automatically.  The
+# rest of the arguments are files or directories to include, and possibly
+# other arguments to tar.
+
+build_tarfile() {
+  # Get the name of the destination tar file.
+  TARFILE="$1.tar.xz"
+  shift
+
+  # Build the tar file itself.
+  (${TAR} cf - "$@" | ${XZ} > ${TARFILE}) || \
+    error "Could not build tarfile"
+  FILE_LIST="${FILE_LIST} ${TARFILE}"
+}
+
+# Build the various tar files for the release.
+
+build_tarfiles() {
+  inform "Building tarfiles"
+
+  changedir "${WORKING_DIRECTORY}"
+
+  # The GNU Coding Standards specify that all files should
+  # world readable.
+  chmod -R a+r ${SOURCE_DIRECTORY}
+  # And that all directories have mode 755.
+  find ${SOURCE_DIRECTORY} -type d -exec chmod 755 {} \;
+ 
+  # Build one huge tarfile for the entire distribution.
+  build_tarfile gcc-${RELEASE} `basename ${SOURCE_DIRECTORY}`
+}
+
+# Build .gz files.
+build_gzip() {
+  for f in ${FILE_LIST}; do
+    target=${f%.xz}.gz
+    (${XZ} -d -c $f | ${GZIP} > ${target}) || error "Could not create ${target}"
+  done
+}
+
+# Build diffs against an old release.
+build_diffs() {
+  old_dir=${1%/*}
+  old_file=${1##*/}
+  case "$old_file" in
+    *.tar.xz) old_vers=${old_file%.tar.xz};;
+    *) old_vers=${old_file%.tar.bz2};;
+  esac
+  old_vers=${old_vers#gcc-}
+  inform "Building diffs against version $old_vers"
+  for f in gcc; do
+    if [ -e ${old_dir}/${f}-${old_vers}.tar.xz ]; then
+      old_tar=${old_dir}/${f}-${old_vers}.tar.xz
+    else
+      old_tar=${old_dir}/${f}-${old_vers}.tar.bz2
+    fi
+    new_tar=${WORKING_DIRECTORY}/${f}-${RELEASE}.tar.xz
+    if [ ! -e $old_tar ]; then
+      inform "$old_tar not found; not generating diff file"
+    elif [ ! -e $new_tar ]; then
+      inform "$new_tar not found; not generating diff file"
+    else
+      build_diff $old_tar gcc-${old_vers} $new_tar gcc-${RELEASE} \
+        ${f}-${old_vers}-${RELEASE}.diff.xz
+    fi
+  done
+}
+
+# Build an individual diff.
+build_diff() {
+  changedir "${WORKING_DIRECTORY}"
+  tmpdir=gccdiff.$$
+  mkdir $tmpdir || error "Could not create directory $tmpdir"
+  changedir $tmpdir
+  case "$1" in
+    *.tar.bz2)
+      (${BZIP2} -d -c $1 | ${TAR} xf - ) || error "Could not unpack $1 for diffs"
+      ;;
+    *.tar.xz)
+      (${XZ} -d -c $1 | ${TAR} xf - ) || error "Could not unpack $1 for diffs"
+      ;;
+  esac
+  (${XZ} -d -c $3 | ${TAR} xf - ) || error "Could not unpack $3 for diffs"
+  ${DIFF} $2 $4 > ../${5%.xz}
+  if [ $? -eq 2 ]; then
+    error "Trouble making diffs from $1 to $3"
+  fi
+  ${XZ} ../${5%.xz} || error "Could not generate ../$5"
+  changedir ..
+  rm -rf $tmpdir
+  FILE_LIST="${FILE_LIST} $5"
+}
+
+# Upload the files to the FTP server.
+upload_files() {
+  inform "Uploading files"
+
+  changedir "${WORKING_DIRECTORY}"
+
+  # Make sure the directory exists on the server.
+  if [ $LOCAL -eq 0 ]; then
+    ${SSH} -l ${GCC_USERNAME} ${GCC_HOSTNAME} \
+      mkdir -m 755 -p "${FTP_PATH}/diffs"
+    UPLOAD_PATH="${GCC_USERNAME}@${GCC_HOSTNAME}:${FTP_PATH}"
+  else
+    mkdir -p "${FTP_PATH}/diffs" \
+      || error "Could not create \`${FTP_PATH}'"
+    UPLOAD_PATH=${FTP_PATH}
+  fi
+
+  # Then copy files to their respective (sub)directories.
+  for x in gcc*.gz gcc*.xz; do
+    if [ -e ${x} ]; then
+      # Make sure the file will be readable on the server.
+      chmod a+r ${x}
+      # Copy it.
+      case ${x} in
+        *.diff.*)
+          SUBDIR="diffs/";
+          ;;
+        *)
+          SUBDIR="";
+      esac
+      ${SCP} ${x} ${UPLOAD_PATH}/${SUBDIR} \
+        || error "Could not upload ${x}"
+    fi
+  done
+}
+
+# Print description if snapshot exists.
+snapshot_print() {
+  if [ -e ${RELEASE}/$1 ]; then
+    hash=`openssl  sha256  ${RELEASE}/$1 | sed -e 's#(.*)##' -e 's# *= *#=#'`
+    hash2=`openssl sha1 ${RELEASE}/$1 | sed -e 's#(.*)##' -e 's# *= *#=#'`
+
+    printf " %-37s%s\n\n  %s\n  %s\n\n" "$1" "$2" "$hash" "$hash2" \
+      >> ${SNAPSHOT_README}
+
+     echo "  <tr><td><a href=\"$1\">$1</a></td>" >> ${SNAPSHOT_INDEX}
+     echo "      <td>$2</td></tr>" >> ${SNAPSHOT_INDEX}
+  fi
+}
+
+# Announce a snapshot, both on the web and via mail.
+announce_snapshot() {
+  inform "Updating links and READMEs on the FTP server"
+  
+  TEXT_DATE=`date --date=$DATE +%B\ %d,\ %Y`
+  SNAPSHOT_README=${RELEASE}/README
+  SNAPSHOT_INDEX=${RELEASE}/index.html
+
+  changedir "${SNAPSHOTS_DIR}"
+  echo \
+"Snapshot gcc-"${RELEASE}" is now available on
+  https://gcc.gnu.org/pub/gcc/snapshots/"${RELEASE}"/
+and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.
+
+This snapshot has been generated from the GCC "${BRANCH}" git branch
+with the following options: "git://gcc.gnu.org/git/gcc.git branch ${GITBRANCH} revision ${GITREV}"
+
+You'll find:
+" > ${SNAPSHOT_README}
+
+  echo \
+"<html>
+
+<head>
+<title>GCC "${RELEASE}" Snapshot</title>
+</head>
+
+<body>
+<h1>GCC "${RELEASE}" Snapshot</h1>
+
+<p>The <a href =\"http://gcc.gnu.org/\">GCC Project</a> makes
+periodic snapshots of the GCC source tree available to the public
+for testing purposes.</p>
+	
+<p>If you are planning to download and use one of our snapshots, then
+we highly recommend you join the GCC developers list.  Details for
+how to sign up can be found on the GCC project home page.</p>
+
+<p>This snapshot has been generated from the GCC "${BRANCH}" git branch
+with the following options: <code>"git://gcc.gnu.org/git/gcc.git branch ${GITBRANCH} revision ${GITREV}"</code></p>
+
+<table>" > ${SNAPSHOT_INDEX}
+       
+  snapshot_print gcc-${RELEASE}.tar.xz "Complete GCC"
+
+  echo \
+"Diffs from "${BRANCH}"-"${LAST_DATE}" are available in the diffs/ subdirectory.
+
+When a particular snapshot is ready for public consumption the LATEST-"${BRANCH}"
+link is updated and a message is sent to the gcc list.  Please do not use
+a snapshot before it has been announced that way." >> ${SNAPSHOT_README}
+
+  echo \
+"</table>
+<p>Diffs from "${BRANCH}"-"${LAST_DATE}" are available in the
+<a href=\"diffs/\">diffs/ subdirectory</a>.</p>
+
+<p>When a particular snapshot is ready for public consumption the LATEST-"${BRANCH}"
+link is updated and a message is sent to the gcc list.  Please do not use
+a snapshot before it has been announced that way.</p>
+
+<hr />
+
+<address>
+<a href=\"mailto:gcc@gcc.gnu.org\">gcc@gcc.gnu.org</a>
+<br />
+Last modified "${TEXT_DATE}"
+</address>
+</body>
+
+</html>" >> ${SNAPSHOT_INDEX}
+
+  rm -f LATEST-${BRANCH}
+  ln -s ${RELEASE} LATEST-${BRANCH}
+
+  inform "Sending mail"
+
+  export QMAILHOST=gcc.gnu.org
+  mail -s "gcc-${RELEASE} is now available" gcc@gcc.gnu.org < ${SNAPSHOT_README}
+}
+
+########################################################################
+# Initialization
+########################################################################
+
+LC_ALL=C
+export LC_ALL
+
+# Today's date.
+DATE=`date "+%Y%m%d"`
+LONG_DATE=`date "+%Y-%m-%d"`
+
+GIT=${GIT:-git}
+# The server containing the GCC repository.
+GIT_SERVER="gcc.gnu.org"
+# The path to the repository on that server.
+GIT_REPOSITORY="/git/gcc.git"
+# The username to use when connecting to the server.
+GIT_USERNAME="${USER}"
+# Flag to specify use of local git repository.
+GIT_LOCALPATH=0
+# The machine to which files will be uploaded.
+GCC_HOSTNAME="gcc.gnu.org"
+# The name of the account on the machine to which files are uploaded.
+GCC_USERNAME="gccadmin"
+# The directory in which the files will be placed (do not use ~user syntax).
+FTP_PATH=/var/ftp/pub/gcc
+# The directory in which snapshots will be placed.
+SNAPSHOTS_DIR=${FTP_PATH}/snapshots
+
+# The major number for the release.  For release `3.0.2' this would be 
+# `3'
+RELEASE_MAJOR=""
+# The minor number for the release.  For release `3.0.2' this would be
+# `0'.
+RELEASE_MINOR=""
+# The revision number for the release.  For release `3.0.2' this would
+# be `2'.
+RELEASE_REVISION=""
+# The complete name of the release.
+RELEASE=""
+
+# The name of the branch from which the release should be made, in a 
+# user-friendly form.
+BRANCH=""
+
+# The name of the branch from which the release should be made, as used
+# for our version control system.
+GITBRANCH=""
+
+# The tag to apply to the sources used for the release.
+TAG=""
+
+# The old tarballs from which to generate diffs.
+OLD_TARS=""
+
+# Local gcc git checkout to speed up git cloning.
+GIT_REFERENCE=""
+
+# The directory that will be used to construct the release.  The
+# release itself will be placed in a subdirectory of this directory.
+DESTINATION=${HOME}
+# The subdirectory.
+WORKING_DIRECTORY=""
+# The directory that will contain the GCC sources.
+SOURCE_DIRECTORY=""
+# PATH To GCC Repository containing this script while running
+GCCPATH=$(cd "$(dirname "$0")" && pwd)/../../
+
+# Non-zero if this is the final release, rather than a prerelease.
+FINAL=0
+
+# Non-zero if we are building a snapshot, and don't build gcc or
+# include generated files.
+SNAPSHOT=0
+
+# Non-zero if we are running locally on gcc.gnu.org, and use local CVS
+# and copy directly to the FTP directory.
+LOCAL=0
+
+# Major operation modes.
+MODE_GZIP=0
+MODE_DIFFS=0
+MODE_SOURCES=0
+MODE_TARFILES=0
+MODE_UPLOAD=0
+
+# List of archive files generated; used to create .gz files from .xz.
+FILE_LIST=""
+
+# Programs we use.
+
+BZIP2="${BZIP2:-bzip2}"
+XZ="${XZ:-xz --best}"
+CVS="${CVS:-cvs -f -Q -z9}"
+DIFF="${DIFF:-diff -Nrcpad}"
+ENV="${ENV:-env}"
+GZIP="${GZIP:-gzip --best}"
+SCP="${SCP:-scp -p}"
+SSH="${SSH:-ssh}"
+TAR="${TAR:-tar}"
+
+########################################################################
+# Command Line Processing
+########################################################################
+
+# Parse the options.
+while getopts "d:fr:u:t:p:s:lb:c" ARG; do
+    case $ARG in
+    d)    DESTINATION="${OPTARG}";;
+    r)    RELEASE="${OPTARG}";;
+    t)    TAG="${OPTARG}";;
+    u)    GIT_USERNAME="${OPTARG}";;
+    f)    FINAL=1;;
+    s)    SNAPSHOT=1
+          BRANCH=${OPTARG%:*}
+          GITBRANCH=${OPTARG#*:}
+          ;;
+    l)    LOCAL=1
+	  SCP=cp
+	  PATH=~:/usr/local/bin:$PATH;;
+    p)    OLD_TARS="${OLD_TARS} ${OPTARG}"
+          if [ ! -f ${OPTARG} ]; then
+	    error "-p argument must name a tarball"
+	  fi;;
+    b)    GIT_REFERENCE="${OPTARG}";;
+    c)    GIT_LOCALPATH=1;;
+    \?)   usage;;
+    esac
+done
+shift `expr ${OPTIND} - 1`
+
+# Handle the major modes.
+while [ $# -ne 0 ]; do
+    case $1 in
+    diffs)    MODE_DIFFS=1;;
+    gzip)     MODE_GZIP=1;;
+    sources)  MODE_SOURCES=1;;
+    tarfiles) MODE_TARFILES=1;;
+    upload)   MODE_UPLOAD=1;;
+    all)      MODE_SOURCES=1; MODE_TARFILES=1; MODE_DIFFS=1; MODE_UPLOAD=1;
+              if [ $SNAPSHOT -ne 1 ]; then
+                # Only for releases and pre-releases.
+                MODE_GZIP=1;
+              fi
+              ;;
+    *)        error "Unknown mode $1";;
+    esac
+    shift
+done
+
+# Perform consistency checking.
+if [ ${LOCAL} -eq 0 ] && [ -z ${GIT_USERNAME} ]; then
+  error "No username specified"
+fi
+
+if [ ! -d ${DESTINATION} ]; then
+  error "\`${DESTINATION}' is not a directory"
+fi
+
+if [ $SNAPSHOT -eq 0 ]; then
+  if [ -z ${RELEASE} ]; then
+    error "No release number specified"
+  fi
+
+  # Compute the major and minor release numbers.
+  RELEASE_MAJOR=`echo $RELEASE | awk --assign FS=. '{ print $1; }'`
+  RELEASE_MINOR=`echo $RELEASE | awk --assign FS=. '{ print $2; }'`
+  RELEASE_REVISION=`echo $RELEASE | awk --assign FS=. '{ print $3; }'`
+
+  if [ -z "${RELEASE_MAJOR}" ] || [ -z "${RELEASE_MINOR}" ]; then
+    error "Release number \`${RELEASE}' is invalid"
+  fi
+
+  # Compute the full name of the release.
+  if [ -z "${RELEASE_REVISION}" ]; then
+    RELEASE="${RELEASE_MAJOR}.${RELEASE_MINOR}"
+  else
+    RELEASE="${RELEASE_MAJOR}.${RELEASE_MINOR}.${RELEASE_REVISION}"
+  fi
+
+  # Compute the name of the branch, which is based solely on the major
+  # release number.
+  GITBRANCH="releases/gcc-${RELEASE_MAJOR}"
+
+  # If this is not a final release, set various parameters accordingly.
+  if [ ${FINAL} -ne 1 ]; then
+    RELEASE="${RELEASE}-RC-${DATE}"
+    FTP_PATH="${SNAPSHOTS_DIR}/${RELEASE}"
+  else
+    FTP_PATH="${FTP_PATH}/releases/gcc-${RELEASE}/"
+  fi
+else
+  RELEASE=${BRANCH}-${DATE}
+  FTP_PATH="${FTP_PATH}/snapshots/${RELEASE}"
+
+  # If diffs are requested when building locally on gcc.gnu.org, we (usually)
+  # know what the last snapshot date was and take the corresponding tarballs,
+  # unless the user specified tarballs explicitly.
+  if [ $MODE_DIFFS -ne 0 ] && [ $LOCAL -ne 0 ] && [ -z "${OLD_TARS}" ]; then
+    LAST_DATE=`cat ~/.snapshot_date-${BRANCH}`
+    OLD_TARS=${SNAPSHOTS_DIR}/${BRANCH}-${LAST_DATE}/gcc-${BRANCH}-${LAST_DATE}.tar.bz2
+    if [ ! -e $OLD_TARS ]; then
+      OLD_TARS=${SNAPSHOTS_DIR}/${BRANCH}-${LAST_DATE}/gcc-${BRANCH}-${LAST_DATE}.tar.xz
+    fi
+  fi
+fi
+
+# Compute the name of the WORKING_DIRECTORY and the SOURCE_DIRECTORY.
+WORKING_DIRECTORY="${DESTINATION}/gcc-${RELEASE}"
+SOURCE_DIRECTORY="${WORKING_DIRECTORY}/gcc-${RELEASE}"
+
+# Set up GITROOT.
+if [ $LOCAL -eq 0 ]; then
+    GITROOT="git+ssh://${GIT_USERNAME}@${GIT_SERVER}${GIT_REPOSITORY}"
+else
+    GITROOT="/git/gcc.git"
+fi
+export GITROOT
+
+########################################################################
+# Main Program
+########################################################################
+
+# Set the timezone to UTC
+TZ="UTC0"
+export TZ
+
+# Build the source directory.
+
+if [ $MODE_SOURCES -ne 0 ]; then
+  build_sources
+fi
+
+# Build the tar files.
+
+if [ $MODE_TARFILES -ne 0 ]; then
+  build_tarfiles
+fi
+
+# Build diffs
+
+if [ $MODE_DIFFS -ne 0 ]; then
+  # Possibly build diffs.
+  if [ -n "$OLD_TARS" ]; then
+    for old_tar in $OLD_TARS; do
+      build_diffs $old_tar
+    done
+  fi
+fi
+
+# Build gzip files
+if [ $MODE_GZIP -ne 0 ]; then
+  build_gzip
+fi
+
+# Upload them to the FTP server.
+if [ $MODE_UPLOAD -ne 0 ]; then
+  upload_files
+
+  # For snapshots, make some further updates.
+  if [ $SNAPSHOT -ne 0 ] && [ $LOCAL -ne 0 ]; then
+    announce_snapshot
+
+    # Update snapshot date file.
+    changedir ~
+    echo $DATE > .snapshot_date-${BRANCH}
+
+    # Remove working directory
+    rm -rf ${WORKING_DIRECTORY}
+  fi
+fi
diff --git a/.github/scripts/globals.py b/.github/scripts/globals.py
new file mode 100644
index 00000000000..a46aa997184
--- /dev/null
+++ b/.github/scripts/globals.py
@@ -0,0 +1,29 @@
+
+# Declare config global variable
+# https://docs.python.org/3/faq/programming.html#how-do-i-share-global-variables-across-modules
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+configObj = None
+
+logger = None
\ No newline at end of file
diff --git a/.github/scripts/init.sh b/.github/scripts/init.sh
new file mode 100644
index 00000000000..4a218b23f91
--- /dev/null
+++ b/.github/scripts/init.sh
@@ -0,0 +1,39 @@
+# Script to run basic initialization for developers and GitHub workflows
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# Setup upstream gcc remote
+git ls-remote --exit-code --quiet gcc > /dev/null 2>&1
+if test $? != 0; then   
+    echo "Adding gcc upstream remote"
+    git remote add gcc git://gcc.gnu.org/git/gcc.git
+else
+    # Check if the URL ends with gcc.gnu.org. We don't check for a string explicitly
+    # since some devs may use ssh or other means to connect to the remote
+    gccUrl="$(git config remote.gcc.url)"
+
+    if [[ "$gccUrl" != *"gcc.gnu.org/git/gcc.git" ]]; then
+        echo "ERROR: gcc upstream remote was found but it's not pointing to git://gcc.gnu.org/git/gcc.git. Please delete the local gcc upstream remote before running init again"
+        exit -1
+    fi
+fi
\ No newline at end of file
diff --git a/.github/scripts/pushMergedVendorBranch.sh b/.github/scripts/pushMergedVendorBranch.sh
new file mode 100644
index 00000000000..252dc6f6963
--- /dev/null
+++ b/.github/scripts/pushMergedVendorBranch.sh
@@ -0,0 +1,56 @@
+# This script pushes the merged branch 
+# $1 is the temporary local branch to create 
+# $2 is the merge branch produced by the update-main.yaml workflow
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+BASEDIR=$(dirname $0)
+
+chmod +x ${BASEDIR}/init.sh
+${BASEDIR}/init.sh
+if test $? != 0; then
+  echo "ERROR: Initialization failed"
+  exit -1
+fi
+
+if [[ `git status --porcelain` ]]; then
+  echo "ERROR: You have local changes in your repository. Please stash or push them to a branch before running this script"
+  exit -1
+fi
+
+echo "
+---- READ THIS ---- 
+When prompted for the 'local name for upstream repository', 
+enter 'gcc'. The other fields can be the default
+---- END OF READ THIS ----
+"
+
+${BASEDIR}/../../contrib/gcc-git-customization.sh
+${BASEDIR}/../../contrib/git-fetch-vendor.sh --enable-push microsoft
+git fetch
+git fetch gcc
+git fetch origin
+git checkout -B microsoft/main vendors/microsoft/main
+git merge origin/$1
+git push vendors/microsoft microsoft/main
+
diff --git a/.github/scripts/test-gcc.sh b/.github/scripts/test-gcc.sh
new file mode 100644
index 00000000000..7c43e6f18e3
--- /dev/null
+++ b/.github/scripts/test-gcc.sh
@@ -0,0 +1,45 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+cd ../objdir
+
+chmod +x $PWD -R
+mkdir logs
+
+# Run tests
+make -k $1 -j$(nproc) RUNTESTFLAGS="-v -v" 2>&1 >> logs/output.txt 2>&1
+
+# Compare failures found to the failures that we're expecting
+../gcc/contrib/testsuite-management/validate_failures.py >> logs/failures.txt 2>&1
+exit_code=$?
+
+# Print failures to console output so they can be viewed in the GitHub Action run
+cat logs/failures.txt
+
+if [ $exit_code != 0 ]; then
+    exit $exit_code
+fi
+
+# To run one test in particular, use
+#make check-gcc RUNTESTFLAGS="-v -v dg.exp=c-c++-common/asan/asan-interface-1.c"
+
+
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
new file mode 100644
index 00000000000..d3e8b9cf980
--- /dev/null
+++ b/.github/workflows/build.yaml
@@ -0,0 +1,88 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# This needs to match the string returned in GetGccBuildName() in common.py
+name: build
+
+# Run this workflow on every new commit and pull request
+on: 
+  push:
+    branches:
+      - current
+      - 'releases/**'
+      - gcc-9.1.0
+  pull_request:
+    branches:
+      - current
+      - 'releases/**'
+      - gcc-9.1.0
+  workflow_dispatch:
+
+jobs:    
+  build:
+    runs-on: ubuntu-18.04
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+        
+      # Install requests package which is used in downloadBuildArtifact.py 
+      - name: Pip Install Requests
+        run: python -m pip install requests
+        shell: bash
+
+      # Setup config
+      - name: Setup config
+        id: setupconfig
+        run: |
+          chmod +x .github/scripts/gccWorkflow.py
+          echo "$PYTHONPATH"
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          echo "$PYTHONPATH"
+          echo "${GITHUB_CONTEXT}"
+          python -c 'import sys; from gccWorkflow import *; GccWorkflow.Init(sys.argv[1], sys.argv[2], True)' "${GITHUB_CONTEXT}" "${GITHUB_TOKEN}"
+        shell: bash
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build GCC
+        uses: ./.github/actions/build-composite
+        with: 
+          configjson: ${{ steps.setupconfig.outputs.configJson }}
+
+      - name: Compress and archive objdir so that it can be uploaded
+        run: tar -czf objdir.tar.gz ../objdir
+
+      - name: Upload build output
+        uses: actions/upload-artifact@v2
+        with:
+          name: gccBuild
+          path: objdir.tar.gz
diff --git a/.github/workflows/delete-merge-branches.yaml b/.github/workflows/delete-merge-branches.yaml
new file mode 100644
index 00000000000..3e0930d62d6
--- /dev/null
+++ b/.github/workflows/delete-merge-branches.yaml
@@ -0,0 +1,52 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# This workflow deletes the stale merge branches created by update-main.yaml
+# Stale is defined by the branch being 14+ days old. Keeping the branch around for a little
+# while can help us investigate failures.
+
+on:
+  # Run once a day at 5 am UTC
+  schedule:
+    - cron: "0 5 * * *"
+
+jobs:
+  delete:
+    runs-on: ubuntu-18.04
+    outputs:
+      config: ${{ steps.printNoSecretJson.outputs.noSecretConfigJson }}
+      matrixTestSet: ${{ steps.printGCCTestSet.outputs.testSet }}
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+
+      - name: Delete stale branches
+        run: |
+          chmod +x .github/scripts/delete-branches.sh
+          .github/scripts/delete-branches.sh "^merge-master-.*" 14
+        shell: bash
+
+      
diff --git a/.github/workflows/package-rpm.yaml b/.github/workflows/package-rpm.yaml
new file mode 100644
index 00000000000..1e667eb4b2c
--- /dev/null
+++ b/.github/workflows/package-rpm.yaml
@@ -0,0 +1,95 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+name: package-rpm
+
+# Disable for now since packaging needs to run after the build.
+# Run this workflow on every new commit
+# For the time being, we are only running this workflow manually.
+on:
+  # We use the push and pull_request events instead of the workflow_run event
+  # so that this workflow will show up during the PR
+  push:
+    branches:
+      - "releases/**"
+  pull_request:
+    branches:
+      - "releases/**"
+  workflow_dispatch:
+
+jobs:
+  package:
+    container: cblmariner2preview.azurecr.io/base/core:2.0
+    runs-on: ubuntu-18.04
+    steps:
+
+      # We need to install a minimum number of packages to run the workflow: git and ca-certificates.
+      # We need to checkout the repository, and to checkout the repository we need git, since 
+      # by default CBL-Mariner 2.0 image does not have git running.
+      - name: Install Minimal Required Packages
+        run: unset HOME && tdnf install git ca-certificates -y
+        shell: bash
+
+      # Clone the GCC repository to path gcc.
+      - name: Checkout GCC Repository
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: false
+          path: gcc
+
+      # Run composite job to generate gcc tar.xz files.
+      - name: Run Composite Job To Build Tarball
+        uses: ./gcc/.github/actions/build-tarball
+
+      # Before running a complete build, check whether we have the .spec file to build for this version.
+      # If this fails, it means we don't have .spec file for ${{ env.release_version }} version.
+      # The file should be present in .github/Mariner/specs/${{ env.release_version }} directory inside gcc source tree.
+      - name: Check the SPEC File Does Exist in GCC Source Tree
+        working-directory: ./gcc
+        run: test -f .github/Mariner/specs/${{ env.release_version }}/gcc.specs
+        shell: bash
+
+      # Copy gcc-${{ env.release_version }}.tar.xz to /usr/src/mariner/SOURCES/
+      # /usr/src/mariner/SOURCES/ is a hardcoded path for rpmbuild in CBL-Mariner
+      # to look for tar.xz files when starts building packages.
+      - name: Copy GCC
+        run: mkdir -p /usr/src/mariner/SOURCES/ && cp ~/gcc-${{ env.release_version }}/gcc-${{ env.release_version }}.tar.xz /usr/src/mariner/SOURCES/
+        shell: bash
+
+      # Build RPM   
+      # Simple rpmbuild command which will build GCC based on the spec file available in our repo.
+      # The flags are bare minimum, and we are forcing rpmbuild to build everything.     
+      - name: Build RPM
+        working-directory: ./gcc
+        run: rpmbuild -bb --rebuild --clean --verbose --nocheck  .github/Mariner/specs/11.2.1/gcc.specs
+        shell: bash
+
+      # Upload gcc-${{ env.release_version }}-rpms folder to the Github Action artifact storage.
+      # The variable ${{ env.release_version }} will be set by ./gcc/.github/actions/build-tarball job.
+      - name: Upload GCC RPM
+        uses: actions/upload-artifact@v2
+        with:
+          name: gcc-${{ env.release_version }}-rpms
+          path: /usr/src/mariner/RPMS/x86_64/
+          if-no-files-found: error # 'warn' or 'ignore' are also available, defaults to `warn`
diff --git a/.github/workflows/package-source-tarball.yaml b/.github/workflows/package-source-tarball.yaml
new file mode 100644
index 00000000000..cad53faff3e
--- /dev/null
+++ b/.github/workflows/package-source-tarball.yaml
@@ -0,0 +1,72 @@
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+name: package-source-tarball
+
+# Disable for now since packaging needs to run after the build.
+# Run this workflow on every new commit
+# For the time being, we are only running this workflow manually.
+on:
+  # We use the push and pull_request events instead of the workflow_run event
+  # so that this workflow will show up during the PR
+  push:
+    branches:
+      - "releases/**"
+  pull_request:
+    branches:
+      - "releases/**"
+  workflow_dispatch:
+
+jobs:
+  package:
+    container: cblmariner2preview.azurecr.io/base/core:2.0
+    runs-on: ubuntu-18.04
+    steps:
+
+      # We need to install a minimum number of packages to run the workflow: git and ca-certificates.
+      # We need to checkout the repository, and to checkout the repository we need git, since 
+      # by default CBL-Mariner 2.0 image does not have git running.
+      - name: Install Minimal Required Packages
+        run: unset HOME && tdnf install git ca-certificates -y
+        shell: bash
+
+      # Clone the GCC repository to path gcc.
+      - name: Checkout GCC Repository
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: false
+          path: gcc
+
+      # Run composite job to generate gcc tar.xz files.
+      - name: Run Composite Job To Build Tarball
+        uses: ./gcc/.github/actions/build-tarball
+
+      # Upload gcc-${{ env.release_version }}.tar.xz file to the Github Action artifact storage.
+      # The variable ${{ env.release_version }} will be set by ./gcc/.github/actions/build-tarball job.
+      - name: Upload GCC tar.xz
+        uses: actions/upload-artifact@v2
+        with:
+          name: gcc-${{ env.release_version }}.tar.xz
+          path: ~/gcc-${{ env.release_version }}/gcc-${{ env.release_version }}.tar.xz
+          if-no-files-found: error # 'warn' or 'ignore' are also available, defaults to `warn`
diff --git a/.github/workflows/test-gcc.yaml b/.github/workflows/test-gcc.yaml
new file mode 100644
index 00000000000..63b85b79636
--- /dev/null
+++ b/.github/workflows/test-gcc.yaml
@@ -0,0 +1,161 @@
+# This workflow runs the GCC tests in parallel
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+name: test-gcc
+
+# Run this workflow when a build run finishes on the branches listed
+on:  
+  # We use the push and pull_request events instead of the workflow_run event
+  # so that this workflow will show up during the PR
+  push:
+    branches:
+      - current
+      - 'releases/**'
+      - gcc-9.1.0
+  pull_request:
+    branches:
+      - current
+      - 'releases/**'
+      - gcc-9.1.0
+  # the problem with workflow_run is that the run isn't associated with a PR and won't show up in a PR
+  #workflow_run:
+  #  workflows: ["build"]
+  #  types:
+  #    - completed
+  workflow_dispatch:
+
+jobs:
+  init:
+    runs-on: ubuntu-18.04
+    outputs:
+      config: ${{ steps.printNoSecretJson.outputs.noSecretConfigJson }}
+      matrixTestSet: ${{ steps.printGCCTestSet.outputs.testSet }}
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+
+      # Install requests package which is used in downloadBuildArtifact.py 
+      - name: Pip Install Requests
+        run: |
+          python -m pip install requests
+        shell: bash
+
+      # Print the chunked set of GCC tests we'd like to run in a matrix later
+      - name: Print GCC test set
+        id: printGCCTestSet
+        uses: ./.github/actions/print-gcc-testset
+
+      # Setup config
+      - name: Setup config
+        id: setupconfig
+        run: |
+          chmod +x .github/scripts/gccWorkflow.py
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          python -c 'import sys; from gccWorkflow import *; GccWorkflow.Init(sys.argv[1], sys.argv[2], False)' "${GITHUB_CONTEXT}" "${GITHUB_TOKEN}"
+        shell: bash
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      # This should be the last step on this machine since it will clear out fields in the config json
+      - name: Print No Secret Json
+        id: printNoSecretJson
+        run: |
+          chmod +x .github/scripts/config.py
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          python -c 'import sys; from config import *; Config.PrintNoSecretConfigJsonFromJson(sys.argv[1])' "${CONFIG_JSON}"
+        shell: bash
+        env:
+          CONFIG_JSON: ${{ steps.setupconfig.outputs.configJson }}
+  test:
+    needs: init
+    strategy:
+      matrix: ${{fromJSON(needs.init.outputs.matrixTestSet)}}
+      # Avoid cancelling other matrix chunks even if one fails
+      fail-fast: false        
+    runs-on: ubuntu-18.04
+    steps:
+      - run: echo ${{needs.init.outputs.output1}} ${{needs.init.outputs.output2}}
+      - run: echo $GITHUB_CONTEXT
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+      - name: checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+        
+    # Install requests package which is used in downloadBuildArtifact.py 
+      - name: Pip Install Requests
+        run: python -m pip install requests
+        shell: bash
+
+      # build.yaml creates the gccBuild artifact
+      - name: Run GCC tests
+        uses: ./.github/actions/test-composite
+        id: test-composite
+        with: 
+          configjson: ${{needs.init.outputs.config}}
+          testSet: ${{ matrix.testSet }}
+          githubtoken: ${{ secrets.GITHUB_TOKEN }}
+          buildDownloaded: False
+
+      - name: Move objdir to be in repo so logs inside can be uploaded 
+        run: mv ../objdir objdir
+
+      - name: Upload build output
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ matrix.testSet }}_logs
+          path: objdir/logs
+      
+      # We have to do this after because there's no REST API to upload build artifacts so we need to use the yaml one
+      - name: Fail workflow if there was a failure earlier
+        run: |
+          chmod +x .github/scripts/common.py
+          echo "$PYTHONPATH"
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          echo "$PYTHONPATH"
+          echo "${GITHUB_CONTEXT}"
+          python -c 'import sys; from gccWorkflow import *; Config.Reload(sys.argv[1], sys.argv[2]); Config.RaiseErrorIfWorkflowFailed()' "${GITHUB_CONTEXT}" "${GITHUB_TOKEN}"
+        shell: bash
+        env:
+          GITHUB_CONTEXT: ${{steps.test-composite.outputs.configJson}}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        
diff --git a/.github/workflows/update-main.yaml b/.github/workflows/update-main.yaml
new file mode 100644
index 00000000000..8168f4302fd
--- /dev/null
+++ b/.github/workflows/update-main.yaml
@@ -0,0 +1,395 @@
+# This workflow does the following things:
+# 1. Takes the latest SHA from the upstream GCC master branch and starts a build and GCC test run
+# 2. Any new failures encountered during the run and not in the .xfail file in vendors/microsoft/main will get added to a the .xfail file.
+# 3. A new branch will be created in the GitHub repository with the gcc/master SHA we used earlier merged into vendors/microsoft/main and the newly added .xfail failures (if any)
+# 4. A build and test-gcc workflow will then get kicked off against this new branch
+# 5. This workflow will wait until the build and test-gcc workflows are done.
+# 6. If the build and test-gcc steps are successful, it will print the set of Git commands for someone to run manually to actually push the changes to our vendor branch
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+
+name: update-main
+
+# Run this workflow every day at 3 am UTC
+on:
+  schedule:
+    - cron: "0 3 * * *"
+  workflow_dispatch:
+
+jobs:
+  gcc-master-build:
+    name: Build the latest gcc/master toolchain
+    runs-on: ubuntu-18.04
+    outputs:
+      config: ${{ steps.printNoSecretJson.outputs.noSecretConfigJson }}
+      masterSHA: ${{ steps.printCurrentSHA.outputs.currentSHA }}
+      matrixTestSet: ${{ steps.printGCCTestSet.outputs.testSet }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+    
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+        
+      # Install requests package which is used in downloadBuildArtifact.py 
+      - name: Pip Install Requests
+        run: python -m pip install requests
+        shell: bash
+
+      # Add upstream gcc as remote and checkout from their master branch
+      - name: Add upstream remote and checkout upstream gcc master branch
+        uses: ./.github/actions/pull-master-upstream
+        with:
+          scriptsRef: ${{ github.sha }}
+
+      # Print the current SHA so we know what master SHA we synced to and can sync to it later
+      - name: Print current SHA
+        id: printCurrentSHA
+        run: |
+          chmod +x .github/scripts/common.py
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          python -c 'from common import *; GetandPrintCurrentSHA()'
+        shell: bash
+      
+      # Print the chunked set of GCC tests we'd like to run in a matrix later
+      - name: Print GCC test set
+        id: printGCCTestSet
+        uses: ./.github/actions/print-gcc-testset
+
+        # Setup config
+      - name: Setup config
+        id: setupconfig
+        run: |
+          chmod +x .github/scripts/gccWorkflow.py
+          echo "$PYTHONPATH"
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          echo "$PYTHONPATH"
+          echo "${GITHUB_CONTEXT}"
+          python -c 'import sys; from gccWorkflow import *; GccWorkflow.Init(sys.argv[1], sys.argv[2], True)' "${GITHUB_CONTEXT}" "${GITHUB_TOKEN}"
+        shell: bash
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          
+      - name: Build GCC
+        uses: ./.github/actions/build-composite
+        with: 
+          configjson: ${{ steps.setupconfig.outputs.configJson }}
+
+      - name: Compress and archive objdir so that it can be uploaded
+        run: tar -czf objdir.tar.gz ../objdir
+
+      - name: Upload build output
+        uses: actions/upload-artifact@v2
+        with:
+          name: gccBuild
+          path: objdir.tar.gz
+
+      # This should be the last step on this machine since it will clear out fields in the config json
+      - name: Print No Secret Json
+        id: printNoSecretJson
+        run: |
+          chmod +x .github/scripts/config.py
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          python -c 'import sys; from config import *; Config.PrintNoSecretConfigJsonFromJson(sys.argv[1])' "${CONFIG_JSON}"
+        shell: bash
+        env:
+          CONFIG_JSON: ${{ steps.setupconfig.outputs.configJson }}
+          
+  gcc-master-test: 
+    name: Run tests against gcc/master bits built in the previous step
+    needs: gcc-master-build
+    strategy:
+      matrix: ${{fromJSON(needs.gcc-master-build.outputs.matrixTestSet)}}
+      # Avoid cancelling other matrix chunks even if one fails
+      fail-fast: false
+
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+        
+      # Install requests package which is used in downloadBuildArtifact.py 
+      - name: Pip Install Requests
+        run: python -m pip install requests
+        shell: bash
+        
+      # Add upstream gcc as remote and checkout the SHA we used in the master build
+      - name: Add upstream remote and checkout SHA used in build step
+        uses: ./.github/actions/pull-master-upstream
+        with:
+          scriptsRef: ${{ github.sha }}
+          masterRef: ${{ needs.gcc-master-build.outputs.masterSHA }}
+        
+      # We need to download the build artifact here instead of in DownloadBuildArtifact() because artifacts are not available
+      # for download through the REST API until after the workflow has completed. We can only get the workflows from the
+      # previous steps through the download-artifact action.
+      - name: Download gccBuild artifact
+        uses: actions/download-artifact@v2
+        with:
+          name: gccBuild
+          path: gccBuild
+
+      - name: Unpack objdir outisde of the repository
+        run: |
+          tar -xzf gccBuild/objdir.tar.gz -m -C ..
+          rm -r gccBuild
+        shell: bash
+
+      # build.yaml creates the gccBuild artifact
+      - name: Run GCC tests
+        uses: ./.github/actions/test-composite
+        with: 
+          configjson: ${{needs.gcc-master-build.outputs.config}}
+          testSet: ${{ matrix.testSet }}
+          githubtoken: ${{ secrets.GITHUB_TOKEN }}
+          buildDownloaded: True 
+      
+      - name: Move objdir to be in repo so logs inside can be uploaded
+        run: mv ../objdir objdir
+
+      - name: Upload test logs
+        uses: actions/upload-artifact@v2
+        with:
+          name: master_${{ matrix.testSet }}_logs
+          path: objdir/logs
+
+  parse-failures:
+    name: Parse failures and start build and test runs with gcc/master merged into vendor/microsoft/main
+    needs: [gcc-master-test, gcc-master-build]
+    runs-on: ubuntu-18.04
+    outputs:
+      newBranchName: ${{ steps.setBranchName.outputs.newBranchName }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+          token: ${{ secrets.VICTORPAT }} # The basic ${{ github.token }} doesn't include "workflows" write permission access to modify workflows in the .github directory
+
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+          
+      # Install requests package which is used in downloadBuildArtifact.py 
+      - name: Pip Install Requests
+        run: |
+          python -m pip install requests
+        shell: bash
+
+      # Add upstream gcc as remote, setup vendor branches and checkout vendors/microsoft/main
+      - name: Setup and checkout vendors/microsoft/main
+        uses: ./.github/actions/setup-vendor-branches
+        with:
+          scriptsRef: ${{ github.sha }}
+          vendorRef: vendors/microsoft/main
+
+      # Download all artifacts from the previous jobs. This is not ideal but we have to use download-artifact
+      # since the artifacts aren't available to the REST API calls until after the workflow completes
+      # There's also no way to specify a regular expression for the artifact names we're interested in
+      # so we'll have to download the GCC build earlier, which isn't necessary for this step since we only
+      # care about the test logs.
+      # To make this faster, we can avoid downloading the GCC build in the future
+      - uses: actions/download-artifact@v2
+        with:
+          path: artifacts
+
+      - name: Parse failures
+        run: | 
+          chmod +x .github/scripts/gccWorkflow.py
+          echo "$PYTHONPATH"
+          echo "$CONFIG_JSON"
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          echo "$PYTHONPATH"
+          echo "$BUILD_DOWNLOADED"
+          python -c 'import sys; from gccWorkflow import *; GccWorkflow.ParseTestLogs(sys.argv[1], sys.argv[2])' "${CONFIG_JSON}" "${GITHUB_TOKEN}"
+        shell: bash
+        env:
+          CONFIG_JSON: ${{needs.gcc-master-build.outputs.config}}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      # newFailures.patch is created in ParseTestLogs IFF there were failures in master run that aren't in the .xfail file
+      - name: Check if failures patch exists
+        id: check_failures_patch
+        uses: andstor/file-existence-action@v1
+        with:
+          files: "newFailures.patch"
+
+      - name: Upload failures patch
+        if: ${{ steps.check_failures_patch.outputs.files_exists }} == 'true'
+        uses: actions/upload-artifact@v2
+        with:
+          name: newFailures.patch
+          path: newFailures.patch
+
+      - name: Get current date
+        id: date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%dT%H-%M-%S')"
+
+      - name: Set new branch name
+        id: setBranchName
+        run: echo "::set-output name=newBranchName::${name}"
+        env:
+          name: merge-master-${{ needs.gcc-master-build.outputs.masterSHA }}-${{ steps.date.outputs.date }}
+
+      # Use .github scripts in this branch in case the workflow is testing infrastructure changes
+      - name: Merge master SHA and push to our GitHub repo to start run
+        run: |
+          git checkout -b ${newBranchName}
+          git diff --exit-code --quiet .github/ > /dev/null 2>&1
+          if test $? != 0; then
+            git add .github/*
+            git commit -m "Bring latest scripts from ${BRANCH_REF}"
+          fi
+          git fetch gcc master
+          git branch -a
+          git merge ${masterSHA}
+          git push origin HEAD -f
+        shell: bash
+        env:
+          newBranchName: ${{ steps.setBranchName.outputs.newBranchName }}
+          masterSHA: ${{ needs.gcc-master-build.outputs.masterSHA }}
+          BRANCH_REF: ${{ github.sha }}
+
+      - name: Invoke build workflow
+        uses: benc-uk/workflow-dispatch@v1
+        with:
+          workflow: build
+          token: ${{ secrets.VICTORPAT }}
+          ref: ${{ steps.setBranchName.outputs.newBranchName }}
+
+      - name: Invoke test-gcc workflow
+        uses: benc-uk/workflow-dispatch@v1
+        with:
+          workflow: test-gcc
+          token: ${{ secrets.VICTORPAT }}
+          ref: ${{ steps.setBranchName.outputs.newBranchName }}
+
+      - name: Sleep before waiting on build and test runs
+        run: |
+          sleep 3m
+        shell: bash
+
+  wait-build:
+    name: Waiting on build with gcc/master merged into vendor/microsoft/main
+    needs: [parse-failures]
+    runs-on: ubuntu-18.04
+    outputs: 
+      newFailuresPatchExists: ${{ steps.check_failures_patch.outputs.files_exists }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+      
+      # Install requests package which is used in downloadBuildArtifact.py 
+      - name: Pip Install Requests
+        run: |
+          python -m pip install requests
+        shell: bash
+        
+      - name: Wait for build
+        run: | 
+          chmod +x .github/scripts/downloadBuildArtifact.py
+          echo "$PYTHONPATH"
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          echo "$PYTHONPATH"
+          echo "${GITHUB_CONTEXT}"
+          python -c 'import sys; from downloadBuildArtifact import *; WaitOnLatestWorkflow(sys.argv[1], sys.argv[2], sys.argv[3], True)' "${mergeBranch}" "build" "${GITHUB_TOKEN}"
+        shell: bash
+        env:
+          mergeBranch: ${{ needs.parse-failures.outputs.newBranchName }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  wait-test:
+    name: Waiting on tests with gcc/master merged into vendor/microsoft/main
+    needs: [parse-failures, wait-build, gcc-master-build]
+    runs-on: ubuntu-18.04
+    outputs: 
+      newFailuresPatchExists: ${{ steps.check_failures_patch.outputs.files_exists }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+          
+      # Install requests package which is used in downloadBuildArtifact.py 
+      - name: Pip Install Requests
+        run: |
+          python -m pip install requests
+        shell: bash
+
+      - name: Wait for test-gcc
+        run: |
+          chmod +x .github/scripts/downloadBuildArtifact.py
+          echo "$PYTHONPATH"
+          export PYTHONPATH=${PYTHONPATH}:${PWD}/.github/scripts
+          echo "$PYTHONPATH"
+          echo "${GITHUB_CONTEXT}"
+          python -c 'import sys; from downloadBuildArtifact import *; WaitOnLatestWorkflow(sys.argv[1], sys.argv[2], sys.argv[3], True)' "${mergeBranch}" "test-gcc" "${GITHUB_TOKEN}"
+        shell: bash
+        env:
+          mergeBranch: ${{ needs.parse-failures.outputs.newBranchName }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      
+      # The text below is marked with a warning header so that it's colored yellow in the logs and will stand out
+      # I couldn't find any documentation on setting text color in printf statements in a GitHub Yaml file so we're using this for now
+      - name: Run the following command to push the merge manually
+        run: |
+          printf "::warning::Run the following command to create temporary local git branch and push the changes to our vendor branch: \n"
+          printf ".github/scripts/pushMergedVendorBranch.sh ${mergeBranch}"
+        env:
+          mergeBranch: ${{ needs.parse-failures.outputs.newBranchName }}
diff --git a/.github/workflows/update-mirror-branches.yaml b/.github/workflows/update-mirror-branches.yaml
new file mode 100644
index 00000000000..7beb047cc8a
--- /dev/null
+++ b/.github/workflows/update-mirror-branches.yaml
@@ -0,0 +1,91 @@
+# This workflow mirrors our vendor branches into our GitHub repository to trigger the CI workflow if any new changes are present.
+# The workflow will automatically push these changes and will not require manual intervention
+
+# Copyright (c) Microsoft Corporation.
+
+# MIT License
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+name: update-mirror-branches
+
+# Run this workflow every 10 minutes
+on:
+  schedule:
+    - cron: "0,10,20,30,40,50 * * * *"
+  workflow_dispatch:
+      
+jobs:
+  sync:
+    runs-on: ubuntu-18.04
+    strategy:
+      matrix:
+        upstreamBranch: [""]
+        githubBranch: [""]
+
+        # upstream vendor/microsoft/main maps to current
+        # upstream vendor/microsoft/9.1.0 maps to gcc-9.1.0
+        include:
+          - upstreamBranch: main
+            githubBranch: current
+          - upstreamBranch: '9.1.0'
+            githubBranch: gcc-9.1.0
+          - upstreamBranch: 'releases/gcc-11'
+            githubBranch: 'releases/gcc-11'
+
+        # Exclude the default case because we can't have empty matricies
+        exclude:
+          - upstreamBranch: ""
+            githubBranch: ""
+
+      # Avoid cancelling other matrix chunks even if one fails
+      fail-fast: false    
+    steps:
+      - name: Checkout  
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: recursive
+          lfs: true
+          token: ${{ secrets.VICTORPAT }} # The basic ${{ github.token }} doesn't include "workflows" write permission access to modify workflows in the .github directory
+
+      - name: Setup Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+
+      # Add upstream gcc as remote, setup vendor branches and checkout matrix vendor branch
+      - name: Setup and checkout vendors/microsoft/${{ matrix.upstreamBranch }}
+        uses: ./.github/actions/setup-vendor-branches
+        with:
+          scriptsRef: ${{ github.sha }}
+          vendorRef: vendors/microsoft/${{ matrix.upstreamBranch }}
+
+      - name: Get current date
+        id: date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%dT%H-%M-%S')"
+
+      - name: Push to branch in GitHub repo
+        run: |
+          git checkout -b ${newBranchName}
+          git push origin -f ${newBranchName}:${githubBranch}
+        shell: bash
+        env:
+          newBranchName: update-mirror-${{ matrix.githubBranch }}-${{ steps.date.outputs.date }}
+          githubBranch: ${{ matrix.githubBranch }}


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