E#155536 Update to LLVM 20

.github/workflows/build-ci-container.yml

@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           sparse-checkout: .github/workflows/containers/github-action-ci/
       - name: Change podman Root Direcotry
@@ -65,7 +65,7 @@ jobs:
           echo "container-name-tag=$container_name:$tag" >> $GITHUB_OUTPUT
 
       - name: Checkout LLVM
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           sparse-checkout: .github/workflows/containers/github-action-ci/
 

.github/workflows/ci-post-commit-analyzer.yml

@@ -41,7 +41,7 @@ jobs:
       LLVM_VERSION: 18
     steps:
       - name: Checkout Source
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+        uses: actions/checkout@cbb722410c2e876e24abbe8de2cc27693e501dcb # v4.1.1
 
       - name: Setup ccache
         uses: hendrikmuhs/ccache-action@v1
@@ -87,7 +87,7 @@ jobs:
           scan-build --generate-index-only build/analyzer-results
 
       - name: Upload Results
-        uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 #v4.3.0
+        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b #v4.5.0
         if: always()
         with:
           name: analyzer-results

.github/workflows/clang-cir-tests.yml

@@ -0,0 +1,38 @@
+name: Clang CIR Tests
+
+permissions:
+  contents: read
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - 'main'
+    paths:
+      - 'clang/**'
+      - '.github/workflows/clang-cir-tests.yml'
+      - '.github/workflows/llvm-project-tests.yml'
+      - '!llvm/**'
+  pull_request:
+    branches:
+      - '**'
+    paths:
+      - 'clang/**'
+      - '.github/workflows/clang-cir-tests.yml'
+      - '.github/workflows/llvm-project-tests.yml'
+      - '!llvm/**'
+
+concurrency:
+  # Skip intermediate builds: always.
+  # Cancel intermediate builds: only if it is a pull request build.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+
+jobs:
+  check_clang_cir:
+    name: Test clang-cir
+    uses: ./.github/workflows/llvm-project-tests.yml
+    with:
+      build_target: check-clang-cir
+      projects: clang;mlir
+      extra_cmake_args: -DCLANG_ENABLE_CIR=ON

.github/workflows/commit-access-review.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
 
       - name: Install dependencies
         run: |
@@ -28,7 +28,7 @@ jobs:
           python3 .github/workflows/commit-access-review.py $GITHUB_TOKEN
 
       - name: Upload Triage List
-        uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 #v4.3.0
+        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b #v4.5.0
         with:
           name: triagers
           path: triagers.log

.github/workflows/docs.yml

@@ -60,12 +60,12 @@ jobs:
       # a local checkout beforehand.
       - name: Fetch LLVM sources (Push)
         if: ${{ github.event_name == 'push' }}
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           fetch-depth: 1
       - name: Get subprojects that have doc changes
         id: docs-changed-subprojects
-        uses: tj-actions/changed-files@v39
+        uses: tj-actions/changed-files@v45
         with:
           files_yaml: |
             llvm:
@@ -96,7 +96,7 @@ jobs:
               - 'flang/include/flang/Optimizer/Dialect/FIROps.td'
       - name: Fetch LLVM sources (PR)
         if: ${{ github.event_name == 'pull_request' }}
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           fetch-depth: 1
       - name: Setup Python env

.github/workflows/email-check.yaml

@@ -14,7 +14,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 
@@ -38,7 +38,7 @@ jobs:
           [{"body" : "$COMMENT"}]
           EOF
 
-      - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 #v4.3.0
+      - uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b #v4.5.0
         if: always()
         with:
           name: workflow-args

.github/workflows/issue-release-workflow.yml

@@ -42,7 +42,7 @@ jobs:
       contains(github.event.action == 'opened' && github.event.issue.body || github.event.comment.body, '/cherry-pick')
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           repository: llvm/llvm-project
           # GitHub stores the token used for checkout and uses it for pushes

.github/workflows/issue-subscriber.yml

@@ -14,7 +14,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Checkout Automation Script
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           sparse-checkout: llvm/utils/git/
           ref: main

.github/workflows/issue-write.yml

@@ -25,7 +25,7 @@ jobs:
       )
     steps:
       - name: Fetch Sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           sparse-checkout: |
             .github/workflows/unprivileged-download-artifact/action.yml
@@ -39,7 +39,7 @@ jobs:
 
       - name: 'Comment on PR'
         if: steps.download-artifact.outputs.artifact-id != ''
-        uses: actions/github-script@v3
+        uses: actions/github-script@v7
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |

.github/workflows/libclang-abi-tests.yml

@@ -38,7 +38,7 @@ jobs:
       LLVM_VERSION_PATCH: ${{ steps.version.outputs.patch }}
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
         with:
           fetch-depth: 250
 
@@ -130,7 +130,7 @@ jobs:
             sed -i 's/LLVM_[0-9]\+/LLVM_NOVERSION/' $lib-${{ matrix.ref }}.abi
           done
       - name: Upload ABI file
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.name }}
           path: '*${{ matrix.ref }}.abi'
@@ -143,12 +143,12 @@ jobs:
       - abi-dump
     steps:
       - name: Download baseline
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: build-baseline
           path: build-baseline
       - name: Download latest
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: build-latest
           path: build-latest
@@ -162,7 +162,7 @@ jobs:
           done
       - name: Upload ABI Comparison
         if: always()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: compat-report-${{ github.sha }}
           path: compat_reports/

.github/workflows/libclang-python-tests.yml

@@ -37,5 +37,5 @@ jobs:
       projects: clang
       # There is an issue running on "windows-2019".
       # See https://github.com/llvm/llvm-project/issues/76601#issuecomment-1873049082.
-      os_list: '["ubuntu-latest"]'
+      os_list: '["ubuntu-22.04"]'
       python_version: ${{ matrix.python-version }}

.github/workflows/libcxx-build-and-test.yaml

@@ -22,9 +22,6 @@ on:
       - 'runtimes/**'
       - 'cmake/**'
       - '.github/workflows/libcxx-build-and-test.yaml'
-  schedule:
-    # Run nightly at 08:00 UTC (aka 00:00 Pacific, aka 03:00 Eastern)
-    - cron: '0 8 * * *'
 
 permissions:
   contents: read # Default everything to read-only
@@ -66,13 +63,13 @@ jobs:
             cc: 'gcc-14'
             cxx: 'g++-14'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.2.2
       - name: ${{ matrix.config }}.${{ matrix.cxx }}
         run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
         env:
           CC: ${{ matrix.cc }}
           CXX: ${{ matrix.cxx }}
-      - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
+      - uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
         if: always()
         with:
           name: ${{ matrix.config }}-${{ matrix.cxx }}-results
@@ -112,13 +109,13 @@ jobs:
             cc: 'clang-18'
             cxx: 'clang++-18'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.2.2
       - name: ${{ matrix.config }}
         run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
         env:
           CC: ${{ matrix.cc }}
           CXX: ${{ matrix.cxx }}
-      - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
+      - uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
         if: always()  # Upload artifacts even if the build or test suite fails
         with:
           name: ${{ matrix.config }}-${{ matrix.cxx }}-results
@@ -176,13 +173,13 @@ jobs:
     runs-on: ${{ matrix.machine }}
     container: ghcr.io/llvm/libcxx-linux-builder:0fd6f684b9c84c32d6cbfd9742402e788b2879f1
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.2.2
       - name: ${{ matrix.config }}
         run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
         env:
           CC: clang-19
           CXX: clang++-19
-      - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
+      - uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
         if: always()
         with:
           name: ${{ matrix.config }}-results
@@ -214,7 +211,7 @@ jobs:
           os: macos-13
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.2.2
       - uses: maxim-lobanov/setup-xcode@v1
         with:
           xcode-version: 'latest'
@@ -225,7 +222,7 @@ jobs:
           source .venv/bin/activate
           python -m pip install psutil
           bash libcxx/utils/ci/run-buildbot ${{ matrix.config }}
-      - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
+      - uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
         if: always()  # Upload artifacts even if the build or test suite fails
         with:
           name: macos-${{ matrix.config }}-results
@@ -254,7 +251,7 @@ jobs:
         - { config: mingw-dll-i686, mingw: true }
         - { config: mingw-incomplete-sysroot, mingw: true }
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.2.2
       - name: Install dependencies
         run: |
           choco install -y ninja

.github/workflows/libcxx-build-containers.yml

@@ -33,7 +33,7 @@ jobs:
       packages: write
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v4.2.2
 
     - name: Build the Linux builder image
       working-directory: libcxx/utils/ci

.github/workflows/libcxx-check-generated-files.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v4.2.2
 
       - name: Install dependencies
         uses: aminya/setup-cpp@v1

.github/workflows/libcxx-restart-preempted-jobs.yaml

@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "Restart Job"
-        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea #v7.0.1
+        uses: actions/github-script@ffc2c79a5b2490bd33e0a41c1de74b877714d736 #v3.2.0
         with:
           script: |
             const failure_regex = /Process completed with exit code 1./

.github/workflows/llvm-bugs.yml

@@ -20,7 +20,7 @@ jobs:
           check-latest: true
       - run: npm install mailgun.js form-data
       - name: Send notification
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         env:
           MAILGUN_API_KEY: ${{ secrets.LLVM_BUGS_KEY }}
         with:

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

@@ -39,7 +39,12 @@ on:
         type: string
         # Use windows-2019 due to:
         # https://developercommunity.visualstudio.com/t/Prev-Issue---with-__assume-isnan-/1597317
-        default: '["ubuntu-latest", "windows-2019", "macOS-13"]'
+        # Use ubuntu-22.04 rather than ubuntu-latest to match the ubuntu
+        # version in the CI container. Without this, setup-python tries
+        # to install a python version linked against a newer version of glibc.
+        # TODO(boomanaiden154): Bump the Ubuntu version once the version in the
+        # container is bumped.
+        default: '["ubuntu-22.04", "windows-2019", "macOS-13"]'
 
       python_version:
         required: false
@@ -86,7 +91,7 @@ jobs:
       # actions/checkout deletes any existing files in the new git directory,
       # so this needs to either run before ccache-action or it has to use
       # clean: false.
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4.2.2
         with:
           fetch-depth: 250
       - name: Setup ccache
@@ -113,7 +118,8 @@ jobs:
         run: |
           if [ "${{ runner.os }}" == "Linux" ]; then
             builddir="/mnt/build/"
-            mkdir -p $builddir
+            sudo mkdir -p $builddir
+            sudo chown gha $builddir
             extra_cmake_args="-DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang"
           else
             builddir="$(pwd)"/build