LLVM 20 update

.ci/monolithic-windows.sh

@@ -50,8 +50,8 @@ echo "--- cmake"
 pip install -q -r "${MONOREPO_ROOT}"/mlir/python/requirements.txt
 pip install -q -r "${MONOREPO_ROOT}"/.ci/requirements.txt
 
-export CC=cl
-export CXX=cl
+export CC=clang
+export CXX=clang++
 export LD=link
 
 # The CMAKE_*_LINKER_FLAGS to disable the manifest come from research

.github/workflows/docs.yml

@@ -51,7 +51,7 @@ on:
 jobs:
   check-docs-build:
     name: "Test documentation build"
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     if: github.repository == 'llvm/llvm-project'
     steps:
       # Don't fetch before checking for file changes to force the file changes

.github/workflows/issue-subscriber.yml

@@ -10,7 +10,7 @@ permissions:
 
 jobs:
   auto-subscribe:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Checkout Automation Script

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

@@ -27,7 +27,7 @@ concurrency:
 jobs:
   abi-dump-setup:
     if: github.repository_owner == 'llvm'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     outputs:
       BASELINE_REF: ${{ steps.vars.outputs.BASELINE_REF }}
       ABI_HEADERS: ${{ steps.vars.outputs.ABI_HEADERS }}
@@ -83,7 +83,7 @@ jobs:
   abi-dump:
     if: github.repository_owner == 'llvm'
     needs: abi-dump-setup
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         name:
@@ -138,7 +138,7 @@ jobs:
 
   abi-compare:
     if: github.repository_owner == 'llvm'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs:
       - abi-dump-setup
       - abi-dump

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

@@ -9,7 +9,7 @@ permissions:
 
 jobs:
   check_generated_files:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Fetch LLVM sources
         uses: actions/checkout@v4

.github/workflows/llvm-bugs.yml

@@ -11,7 +11,7 @@ on:
 
 jobs:
   auto-subscribe:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     if: github.repository == 'llvm/llvm-project'
     steps:
       - uses: actions/setup-node@v4

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

@@ -14,7 +14,7 @@ on:
         required: false
       os_list:
         required: false
-        default: '["ubuntu-latest", "windows-2019", "macOS-13"]'
+        default: '["ubuntu-22.04", "windows-2022", "macOS-13"]'
       python_version:
         required: false
         type: string
@@ -44,7 +44,7 @@ on:
         # 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"]'
+        default: '["ubuntu-22.04", "windows-2022", "macOS-13"]'
 
       python_version:
         required: false
@@ -70,7 +70,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ${{ fromJSON(inputs.os_list) }}
+        os:
+          - ubuntu-22.04
+          # Use windows-2019 due to:
+          # https://developercommunity.visualstudio.com/t/Prev-Issue---with-__assume-isnan-/1597317
+          - windows-2022
+          # We're using a specific version of macOS due to:
+          # https://github.com/actions/virtual-environments/issues/5900
+          - macOS-latest
     steps:
       - name: Setup Windows
         if: startsWith(matrix.os, 'windows')
@@ -84,7 +91,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ inputs.python_version }}
+          python-version: '3.11'
       - name: Install Ninja
         if: runner.os != 'Linux'
         uses: llvm/actions/install-ninja@main
@@ -109,6 +116,7 @@ jobs:
           key: ${{ matrix.os }}
           variant: sccache
       - name: Build and Test
+        if: "!startsWith(matrix.os, 'windows')"
         env:
           # Workaround for https://github.com/actions/virtual-environments/issues/5900.
           # This should be a no-op for non-mac OSes
@@ -138,14 +146,15 @@ jobs:
                 -DLLVM_ENABLE_ASSERTIONS=ON \
                 -DLLDB_INCLUDE_TESTS=OFF \
                 -DLIBCLC_TARGETS_TO_BUILD="amdgcn--;amdgcn--amdhsa;r600--;nvptx--;nvptx64--;nvptx--nvidiacl;nvptx64--nvidiacl" \
+                -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="BPF;SBF" \
                 -DCMAKE_C_COMPILER_LAUNCHER=sccache \
                 -DCMAKE_CXX_COMPILER_LAUNCHER=sccache \
                 $extra_cmake_args \
                 ${{ inputs.extra_cmake_args }}
           ninja -C "$builddir" '${{ inputs.build_target }}'
 
       - name: Build and Test libclc
-        if: "!startsWith(matrix.os, 'windows') && contains(inputs.projects, 'libclc')"
+        if: "!startsWith(matrix.os, 'windows') && !startsWith(matrix.os, 'macOS') && contains(inputs.projects, 'libclc')"
         env:
           LLVM_BUILDDIR: ${{ steps.build-llvm.outputs.llvm-builddir }}
         run: |

.github/workflows/llvm-tests.yml

@@ -6,14 +6,16 @@ permissions:
 on:
   workflow_dispatch:
   push:
-    branches:
-      - 'release/**'
+    ignore-forks: true
+    #branches:
+    #  - 'release/**'
     paths:
       - 'llvm/**'
       - '.github/workflows/llvm-tests.yml'
   pull_request:
-    branches:
-      - 'release/**'
+    ignore-forks: true
+    #branches:
+    #  - 'release/**'
     paths:
       - 'llvm/**'
       - '.github/workflows/llvm-tests.yml'
@@ -26,8 +28,8 @@ concurrency:
 
 jobs:
   abi-dump-setup:
-    if: github.repository_owner == 'llvm'
-    runs-on: ubuntu-latest
+    #if: github.repository_owner == 'llvm'
+    runs-on: ubuntu-22.04
     outputs:
       BASELINE_REF: ${{ steps.vars.outputs.BASELINE_REF }}
       ABI_HEADERS: ${{ steps.vars.outputs.ABI_HEADERS }}
@@ -69,9 +71,9 @@ jobs:
           fi
 
   abi-dump:
-    if: github.repository_owner == 'llvm'
+    #if: github.repository_owner == 'llvm'
     needs: abi-dump-setup
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         name:
@@ -141,8 +143,8 @@ jobs:
           path: llvm.symbols
 
   abi-compare:
-    if: github.repository_owner == 'llvm'
-    runs-on: ubuntu-latest
+    #if: github.repository_owner == 'llvm'
+    runs-on: ubuntu-22.04
     needs:
       - abi-dump-setup
       - abi-dump

.github/workflows/new-issues.yml

@@ -10,7 +10,7 @@ jobs:
   automate-issues-labels:
     permissions:
       issues: write
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     if: github.repository == 'llvm/llvm-project'
     steps:
       - uses: llvm/actions/issue-labeler@main

.github/workflows/new-prs.yml

@@ -16,7 +16,7 @@ on:
 
 jobs:
   greeter:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       pull-requests: write
     # Only comment on PRs that have been opened for the first time, by someone
@@ -56,7 +56,7 @@ jobs:
   automate-prs-labels:
     # Greet first so that only the author gets that notification.
     needs: greeter
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     # Ignore PRs with more than 10 commits.  Pull requests with a lot of
     # commits tend to be accidents usually when someone made a mistake while trying
     # to rebase.  We want to ignore these pull requests to avoid excessive

.github/workflows/pr-request-release-note.yml

@@ -14,7 +14,7 @@ jobs:
       github.repository_owner == 'llvm' &&
       startsWith(github.ref, 'refs/heads/release')
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       # We need to pull the script from the main branch, so that we ensure
       # we get the latest version of this script.

.github/workflows/pr-subscriber.yml

@@ -10,7 +10,7 @@ permissions:
 
 jobs:
   auto-subscribe:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Checkout Automation Script

.github/workflows/premerge.yaml

@@ -25,26 +25,30 @@ concurrency:
 
 jobs:
   premerge-checks-linux:
-    if: >-
-        false && github.repository_owner == 'llvm' &&
-        (github.event_name != 'pull_request' || github.event.action != 'closed')
-    runs-on: llvm-premerge-linux-runners
+    if: (github.event_name != 'pull_request' || github.event.action != 'closed')
+    runs-on: ubuntu-22.04
     steps:
+      - name: Free up space in Github runner
+        uses: easimon/maximize-build-space@master
+        with:
+          remove-dotnet: 'true'
+          remove-android: 'true'
+          remove-haskell: 'true'
+          remove-codeql: 'true'
+          root-reserve-mb: 2048
       - name: Checkout LLVM
         uses: actions/checkout@v4
         with:
           fetch-depth: 2
       - name: Setup ccache
         uses: hendrikmuhs/[email protected]
         with:
-          max-size: "2000M"
+          max-size: "1500M"
+      - name: Print free space
+        run: |
+          echo "Free space:"
+          df -h
       - name: Build and Test
-        # Mark the job as a success even if the step fails so that people do
-        # not get notified while the new premerge pipeline is in an
-        # experimental state.
-        # TODO(boomanaiden154): Remove this once the pipeline is stable and we
-        # are ready for people to start recieving notifications.
-        continue-on-error: true
         run: |
           git config --global --add safe.directory '*'
 
@@ -56,16 +60,10 @@ jobs:
 
           . ./.ci/compute-projects.sh
 
-          all_projects="bolt clang clang-tools-extra compiler-rt cross-project-tests flang libc libclc lld lldb llvm mlir openmp polly pstl"
-          modified_projects="$(keep-modified-projects ${all_projects})"
-
-          linux_projects_to_test=$(exclude-linux $(compute-projects-to-test 0 ${modified_projects}))
-          linux_check_targets=$(check-targets ${linux_projects_to_test} | sort | uniq)
-          linux_projects=$(add-dependencies ${linux_projects_to_test} | sort | uniq)
-
-          linux_runtimes_to_test=$(compute-runtimes-to-test ${linux_projects_to_test})
-          linux_runtime_check_targets=$(check-targets ${linux_runtimes_to_test} | sort | uniq)
-          linux_runtimes=$(echo ${linux_runtimes_to_test} | sort | uniq)
+          linux_projects="clang lld lldb llvm"
+          linux_check_targets="check-clang check-lld check-lldb check-llvm"
+          linux_runtimes=""
+          linux_runtime_check_targets=""
 
           if [[ "${linux_projects}" == "" ]]; then
             echo "No projects to build"
@@ -77,16 +75,16 @@ jobs:
           echo "Building runtimes: ${linux_runtimes}"
           echo "Running runtimes checks targets: ${linux_runtime_check_targets}"
 
-          export CC=/opt/llvm/bin/clang
-          export CXX=/opt/llvm/bin/clang++
+          export CC=clang
+          export CXX=clang++
 
           ./.ci/monolithic-linux.sh "$(echo ${linux_projects} | tr ' ' ';')" "$(echo ${linux_check_targets})" "$(echo ${linux_runtimes} | tr ' ' ';')" "$(echo ${linux_runtime_check_targets})"
 
   premerge-checks-windows:
     if: >-
-        false && github.repository_owner == 'llvm' &&
-        (github.event_name != 'pull_request' || github.event.action != 'closed')
-    runs-on: llvm-premerge-windows-runners
+      false && github.repository_owner == 'llvm' &&
+      (github.event_name != 'pull_request' || github.event.action != 'closed')
+    runs-on: windows-2022
     defaults:
       run:
         shell: bash
@@ -128,12 +126,6 @@ jobs:
           echo "windows-projects=${windows_projects}" >> $GITHUB_OUTPUT
           echo "windows-check-targets=${windows_check_targets}" >> $GITHUB_OUTPUT
       - name: Build and Test
-        # Mark the job as a success even if the step fails so that people do
-        # not get notified while the new premerge pipeline is in an
-        # experimental state.
-        # TODO(boomanaiden154): Remove this once the pipeline is stable and we
-        # are ready for people to start recieving notifications.
-        continue-on-error: true
         if: ${{ steps.vars.outputs.windows-projects != '' }}
         shell: cmd
         run: |
@@ -144,11 +136,7 @@ jobs:
 
   permerge-check-macos:
     runs-on: macos-14
-    if: >-
-      github.repository_owner == 'llvm' &&
-      (startswith(github.ref_name, 'release/') ||
-       startswith(github.base_ref, 'release/')) &&
-      (github.event_name != 'pull_request' || github.event.action != 'closed')
+    if: (github.event_name != 'pull_request' || github.event.action != 'closed')
     steps:
       - name: Checkout LLVM
         uses: actions/checkout@v4
@@ -170,7 +158,7 @@ jobs:
 
           . ./.ci/compute-projects.sh
 
-          all_projects="clang clang-tools-extra lld lldb llvm mlir"
+          all_projects="clang lld lldb llvm"
           modified_projects="$(keep-modified-projects ${all_projects})"
 
           # We have to disable the runtimes builds due to https://github.com/llvm/llvm-project/issues/90568

.github/workflows/release-documentation.yml

@@ -29,7 +29,7 @@ on:
 jobs:
   release-documentation:
     name: Build and Upload Release Documentation
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       upload: ${{ inputs.upload && !contains(inputs.release-version, 'rc') }}
     steps:

.github/workflows/release-doxygen.yml

@@ -33,7 +33,7 @@ on:
 jobs:
   release-doxygen:
     name: Build and Upload Release Doxygen
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       contents: write
     env:

.github/workflows/release-lit.yml

@@ -25,7 +25,7 @@ on:
 jobs:
   release-lit:
     name: Release Lit
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout LLVM
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

.github/workflows/release-tasks.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   validate-tag:
     name: Validate Tag
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     if: github.repository == 'llvm/llvm-project'
     outputs:
       release-version: ${{ steps.validate-tag.outputs.release-version }}