[workflows] Set up GitHub actions for release_14x branch

This commit squashes the following commits from the release_14x branch:

    commit 84ed34d
    Author: Bryan Chan <bryan.chan@huawei.com>
    Date:   Sun Apr 24 19:13:25 2022 -0400

        [workflows] support GitHub actions for release_14x branch

    commit dd852a6
    Author: Bryan Chan <bryanpkc@gmail.com>
    Date:   Fri Jul 15 21:50:21 2022 -0400

        [workflows] Fix CI for release_14x

        1. Parameterize Ubuntu20Dockerfile with the branch name. Previously the
           Dockerfile was still creating container images from the hardcoded
           release_13x branch.

        2. Update the workaround for MacOS X build failures according to
           actions/runner-images#2274.

        3. For debugging purpose, add a -v option to build-llvm-project.sh to enable
           verbose output. The option sets $VERBOSE to an non-empty string which
           forces the CMake-generated Makefile to print every command it runs.

        4. Delete the repo-lockdown workflow to eliminate the job which is always
           a no-op for classic-flang-llvm-project.

.github/workflows/Ubuntu20Dockerfile

@@ -34,7 +34,7 @@ RUN apt-get install -y software-properties-common && \
     apt-get install -f -y llvm-10 clang-10 && \
     apt-get install -f -y llvm-11 clang-11
 
-# Install the tools for release_13x
+# Install the tools for release_13x and newer
 RUN apt --fix-missing update && \
     apt install -y build-essential manpages-dev \
     libssl-dev zlib1g-dev \
@@ -51,10 +51,11 @@ RUN ln -s /usr/bin/ninja-build /usr/local/bin/ninja
 
 RUN mkdir /home/github/
 
+ARG BRANCH_NAME
 RUN mkdir /home/root && cd home/root && \
-    git clone --depth 1 --single-branch --branch release_13x https://github.com/flang-compiler/classic-flang-llvm-project.git classic-flang-llvm-project && \
+    git clone --depth 1 --single-branch --branch $BRANCH_NAME https://github.com/flang-compiler/classic-flang-llvm-project.git classic-flang-llvm-project && \
     cd classic-flang-llvm-project && \
-    ./build-llvm-project.sh -t AArch64 -p /home/github/usr/local -n `nproc --ignore=1` -a /usr/bin/gcc-10 -b /usr/bin/g++-10 -i
+    ./build-llvm-project.sh -t AArch64 -p /home/github/usr/local -n `nproc --ignore=1` -a /usr/bin/gcc-10 -b /usr/bin/g++-10 -i -v
 
 RUN useradd github && \
     chown -R github:github /home/github

.github/workflows/build_push_docker_image_Ubuntu20.yml

@@ -3,7 +3,7 @@ name: Pre-compile llvm ARM64
 on:
   workflow_dispatch:
   push:
-    branches: [ release_11x, release_12x, release_13x ]
+    branches: [ release_11x, release_12x, release_13x, release_14x ]
     paths-include:
       - '**/.github/workflows/build_push_docker_image_Ubuntu20.yml'
       - '**/.github/workflows/Ubuntu20Dockerfile.yml'
@@ -47,6 +47,8 @@ jobs:
           cache-to: type=local,dest=/tmp/.buildx-cache-new
           tags: ghcr.io/${{ github.repository_owner }}/ubuntu20-flang-${{ steps.extract_branch.outputs.branch }}:latest
           platforms: linux/arm64
+          build-args: |
+            BRANCH_NAME=${{ steps.extract_branch.outputs.branch }}
 
       # This ugly bit is necessary if you don't want your cache to grow forever
       # till it hits GitHub's limit of 5GB.

.github/workflows/flang-tests.yml

@@ -2,7 +2,7 @@ name: Build and test Flang
 
 on:
   pull_request:
-    branches: [ release_11x, release_12x, release_13x ]
+    branches: [ release_11x, release_12x, release_13x, release_14x ]
 
 jobs:
   build:
@@ -57,7 +57,7 @@ jobs:
           ${{ matrix.cpp }}-${{ matrix.version }} --version
 
       - name: Build and install llvm
-        run: ./build-llvm-project.sh -t ${{ matrix.target }} -p ${{ env.install_prefix }} -a /usr/bin/${{ matrix.cc }}-${{ matrix.version }} -b /usr/bin/${{ matrix.cpp }}-${{ matrix.version }} -n $(nproc) -c -i -s
+        run: ./build-llvm-project.sh -t ${{ matrix.target }} -p ${{ env.install_prefix }} -a /usr/bin/${{ matrix.cc }}-${{ matrix.version }} -b /usr/bin/${{ matrix.cpp }}-${{ matrix.version }} -n $(nproc) -c -i -s -v
 
       - name: Checkout flang
         run: |

.github/workflows/llvm-project-tests.yml

@@ -81,12 +81,12 @@ jobs:
           # This should be a no-op for non-mac OSes
           PKG_CONFIG_PATH: /usr/local/Homebrew/Library/Homebrew/os/mac/pkgconfig//12
         run: |
-          ./build-llvm-project.sh -t X86 -e "clang" -p /usr/local -s -n $(sysctl -n hw.logicalcpu) -i
+          ./build-llvm-project.sh -t X86 -e "clang" -p /usr/local -s -n $(sysctl -n hw.logicalcpu) -i -v
           cd build
           make check-all
       - name: Test clang ubuntu
         if: ${{ matrix.os == 'ubuntu-latest'}}
         run: |
-          ./build-llvm-project.sh -t X86 -e "${{ inputs.projects }}" -p /usr/local -s -n $(nproc) -i
+          ./build-llvm-project.sh -t X86 -e "${{ inputs.projects }}" -p /usr/local -s -n $(nproc) -i -v
           cd build
           make check-all

.github/workflows/pre-compile_llvm.yml

@@ -3,7 +3,7 @@ name: Pre-compile llvm
 on:
   workflow_dispatch:
   push:
-    branches: [ release_100, release_11x, release_12x, release_13x ]
+    branches: [ release_11x, release_12x, release_13x, release_14x ]
 
 jobs:
   build:
@@ -65,7 +65,8 @@ jobs:
             -p /usr/local \
             -a /usr/bin/${{ matrix.cc }}-${{ matrix.version }} \
             -b /usr/bin/${{env.cpp}}-${{ matrix.version }} \
-            -n $(nproc)
+            -n $(nproc) \
+            -v
           # Archive the source + build directories for future installation
           cd ..
           tar -zcf llvm_build.tar.gz classic-flang-llvm-project

build-llvm-project.sh

@@ -11,6 +11,7 @@ USE_SUDO="0"
 C_COMPILER_PATH="/usr/bin/gcc"
 CXX_COMPILER_PATH="/usr/bin/g++"
 LLVM_ENABLE_PROJECTS="clang;openmp"
+VERBOSE=""
 
 set -e # Exit script on first error.
 
@@ -36,8 +37,9 @@ function print_usage {
     echo "  -a  C compiler path. Default: /usr/bin/gcc";
     echo "  -b  C++ compiler path. Default: /usr/bin/g++";
     echo "  -e  List of the LLVM sub-projects to build. Default: clang;openmp";
+    echo "  -v  Enable verbose output";
 }
-while getopts "t:d:p:n:c?i?s?a:b:e:" opt; do
+while getopts "t:d:p:n:c?i?s?a:b:e:v" opt; do
     case "$opt" in
         t)  TARGET=$OPTARG;;
         d)  BUILD_TYPE=$OPTARG;;
@@ -49,6 +51,7 @@ while getopts "t:d:p:n:c?i?s?a:b:e:" opt; do
         a)  C_COMPILER_PATH=$OPTARG;;
         b)  CXX_COMPILER_PATH=$OPTARG;;
         e)  LLVM_ENABLE_PROJECTS=$OPTARG;;
+        v)  VERBOSE="1";;
         ?) print_usage; exit 0;;
     esac
 done
@@ -72,8 +75,12 @@ fi
 
 # Build and install
 mkdir -p build && cd build
+if [ -n "$VERBOSE" ]; then
+  set -x
+fi
 cmake $CMAKE_OPTIONS -DLLVM_ENABLE_PROJECTS=$LLVM_ENABLE_PROJECTS ../llvm
-make -j$NPROC
+set +x
+make -j$NPROC VERBOSE=$VERBOSE
 if [ $DO_INSTALL == "1" ]; then
   if [ $USE_SUDO == "1" ]; then
     echo "Install with sudo"