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Merge branch 'main' into fold-transfer-partial-tests
2 parents dd52c87 + 6722331 commit a6bd593

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‎.github/CODEOWNERS‎

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/libcxx/ @llvm/reviewers-libcxx
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/libcxxabi/ @llvm/reviewers-libcxxabi
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/libunwind/ @llvm/reviewers-libunwind
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/runtimes/ @llvm/reviewers-libcxx
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2019
/llvm/lib/Analysis/BasicAliasAnalysis.cpp @nikic
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/llvm/lib/Analysis/HashRecognize.cpp @artagnon @pfusik

‎.github/new-prs-labeler.yml‎

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@@ -961,6 +961,7 @@ backend:SPIR-V:
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- llvm/test/CodeGen/SPIRV/**
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- llvm/test/Frontend/HLSL/**
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- llvm/docs/SPIRVUsage.rst
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- llvm/tools/spirv-tools/**
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mlgo:
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- changed-files:

‎.github/workflows/libc-fullbuild-tests.yml‎

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@@ -88,13 +88,20 @@ jobs:
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cpp_compiler: clang++-23
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target: armv7em-none-eabi
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testing: SKIP
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- name: baremetal-armv8m
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- name: baremetal-armv8m-softfp
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os: ubuntu-24.04
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build_type: MinSizeRel
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c_compiler: clang-23
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cpp_compiler: clang++-23
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target: armv8m.main-none-eabi
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testing: SKIP
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- name: baremetal-armv8m-hard
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os: ubuntu-24.04
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build_type: MinSizeRel
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c_compiler: clang-23
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cpp_compiler: clang++-23
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target: armv8m.main-none-eabihf
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testing: SKIP
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- name: baremetal-armv8.1m
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os: ubuntu-24.04
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build_type: MinSizeRel

‎.github/workflows/libc-overlay-tests.yml‎

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@@ -12,7 +12,7 @@ jobs:
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native:
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if: github.repository_owner == 'llvm'
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name: ${{ matrix.os }} - ${{ matrix.compiler.c_compiler }}
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timeout-minutes: 30
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timeout-minutes: 60
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runs-on: ${{ matrix.os }}
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container: ${{ matrix.container || null }}
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strategy:

‎.github/workflows/libcxx-benchmark-commit.yml‎

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# it requires several inputs that allow customizing its behavior.
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name: "[libc++] Run benchmark suite against commit"
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# Keep in sync with libcxx/utils/ci/lnt/dispatch-benchmarks
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run-name: "[libc++] Run benchmark suite against ${{ inputs.commit }} on ${{ inputs.lnt-machine }}"
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permissions:
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lnt-machine:
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description: 'The LNT machine to run the benchmarks on'
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required: true
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type: choice
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options:
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- macos-26.5-arm64
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- linux-x86_64
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type: string
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benchmark-suite-version:
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description: 'The version of the benchmark suite to use (a LLVM monorepo SHA)'
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required: false
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required: true
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type: string
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default: 0eefb2682bf8c04954c46e91916b5164d8424702
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filter:
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description: 'An optional filter to determine which benchmarks to run'
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required: false
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outputs:
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matrix: ${{ steps.select.outputs.matrix }}
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steps:
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- name: Checkout the machine definitions
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uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
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with:
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persist-credentials: false
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# Disabling cone mode allows checking out exactly the single file we need.
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sparse-checkout: libcxx/utils/ci/lnt/machines.json
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sparse-checkout-cone-mode: false
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- name: Select the configuration to benchmark on
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id: select
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uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
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env:
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LNT_MACHINE: ${{ inputs.lnt-machine }}
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with:
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script: |
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const MACHINES = [
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{
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'lnt-machine': 'macos-26.5-arm64',
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runner: ['self-hosted', 'macOS', 'ARM64', '26', '26.5'],
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cxx: 'clang++',
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'running-on': 'macos',
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'xcode-version': '26.5',
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},
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{
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'lnt-machine': 'linux-x86_64',
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runner: 'llvm-premerge-libcxx-runners',
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cxx: 'clang++-22',
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'running-on': 'linux',
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},
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];
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const config = JSON.parse(require('fs').readFileSync('libcxx/utils/ci/lnt/machines.json', 'utf8'));
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const requested = process.env.LNT_MACHINE;
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const selected = MACHINES.filter(m => m['lnt-machine'] === requested);
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const selected = config.filter(cfg => cfg['lnt-machine'] === requested);
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if (selected.length === 0) {
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const known = MACHINES.map(m => m['lnt-machine']).join(', ');
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const known = config.map(cfg => cfg['lnt-machine']).join(', ');
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core.setFailed(`Unknown LNT machine '${requested}' (known machines: ${known})`);
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return;
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}
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"${COMPILER}" --version
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python3 --version
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- name: Setup virtual environment
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run: |
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python3 -m venv .venv
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source .venv/bin/activate
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pip install -r libcxx/utils/requirements.txt
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- name: Run the benchmarks
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env:
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COMMIT: ${{ inputs.commit }}
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BENCHMARK_SUITE_VERSION: ${{ inputs.benchmark-suite-version }}
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FILTER: ${{ inputs.filter }}
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LNT_MACHINE: ${{ matrix.lnt-machine }}
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run: |
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source .venv/bin/activate
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filter_arg=()
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if [ -n "${FILTER}" ]; then
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filter_arg=(--filter "${FILTER}")
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COMMIT: ${{ inputs.commit }}
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LNT_URL: ${{ inputs.lnt-url }}
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run: |
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source .venv/bin/activate
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libcxx/utils/ci/lnt/submit-benchmarks \
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--lnt-url "${LNT_URL}" \
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--test-suite libcxx \

‎.github/workflows/libcxx-benchmark-cron.yml‎

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# This file defines a workflow that periodically requests benchmark runs for the commits
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# that should have historical performance data but don't yet.
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#
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# The workflow keeps no state: on every invocation, the commits that should be benchmarked
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# are recomputed from Git and the ones that have been benchmarked are recomputed from LNT
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# and from the Github Actions API. It then dispatches libcxx-benchmark-commit.yml for the
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# difference, within a budget. This makes the system converge towards having data for all
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# the desired commits, without necessarily ever reaching that state (as new commits land).
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#
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# The actual configuration driving this job is in libcxx/utils/ci/lnt/machines.json.
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name: "[libc++] Request historical benchmark data"
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permissions:
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contents: read
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on:
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schedule:
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# Trigger every hour, off the hour boundary to avoid popular times.
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- cron: '37 * * * *'
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workflow_dispatch:
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inputs:
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dry-run:
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description: 'Report what would be requested, but request nothing'
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required: false
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type: boolean
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default: false
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allow-missing-machine:
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description: 'Plan for machines that have no data in LNT yet. Needed to seed a new machine.'
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required: false
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type: boolean
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default: false
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concurrency:
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group: ${{ github.workflow }}
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cancel-in-progress: false
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jobs:
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# Turn the machine definitions stored in libcxx/utils/ci/lnt/machines.json into actual
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# dispatch jobs.
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select-machines:
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if: github.repository_owner == 'llvm'
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runs-on: ubuntu-24.04
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outputs:
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matrix: ${{ steps.select.outputs.matrix }}
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steps:
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- name: Checkout the machine definitions
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uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
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with:
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persist-credentials: false
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# Disabling cone mode allows checking out exactly the single file we need.
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sparse-checkout: libcxx/utils/ci/lnt/machines.json
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sparse-checkout-cone-mode: false
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- name: Select the machines to request runs for
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id: select
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uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
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with:
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script: |
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const config = JSON.parse(require('fs').readFileSync('libcxx/utils/ci/lnt/machines.json', 'utf8'));
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core.setOutput('matrix', JSON.stringify(config.map(cfg => ({
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machine: cfg['lnt-machine'],
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...cfg.coverage,
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}))));
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request-runs:
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permissions:
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contents: read
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actions: write # to dispatch libcxx-benchmark-commit.yml
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needs:
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- select-machines
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strategy:
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matrix:
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include: ${{ fromJSON(needs.select-machines.outputs.matrix) }}
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fail-fast: false
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name: "Request ${{ matrix.machine }}"
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runs-on: ubuntu-24.04
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timeout-minutes: 30
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env:
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MACHINE: ${{ matrix.machine }}
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SINCE: ${{ matrix.since }}
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EVERY: ${{ matrix.every }}
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SAMPLES: ${{ matrix.samples }}
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MAX_IN_FLIGHT: ${{ matrix.max-in-flight }}
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BENCHMARK_SUITE_VERSION: ${{ matrix.benchmark-suite-version }}
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LNT_URL: ${{ matrix.lnt-url }}
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ALLOW_MISSING_MACHINE: ${{ inputs.allow-missing-machine || 'false' }}
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DRY_RUN: ${{ inputs.dry-run || 'false' }}
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steps:
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- name: Checkout the LLVM monorepo
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uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
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with:
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persist-credentials: false
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# Selecting anchor commits requires full Git history, but not the blob content.
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fetch-depth: 0
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filter: blob:none
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- name: Install Python
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uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
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with:
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python-version: '3.14'
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cache: pip
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cache-dependency-path: libcxx/utils/requirements.txt
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- name: Install dependencies
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run: pip install -r libcxx/utils/requirements.txt
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- name: Determine which commits should have benchmark data
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run: |
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libcxx/utils/ci/lnt/select-anchor-commits --since "${SINCE}" --every "${EVERY}" --output anchors.txt
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# Anchor commits go from oldest to newest. Reverse them to prioritize newer commits first.
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tac anchors.txt > tmp.txt
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mv tmp.txt anchors.txt
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- name: Determine which of them are missing from LNT
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run: |
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allow_missing=()
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if [ "${ALLOW_MISSING_MACHINE}" = "true" ]; then
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allow_missing=(--allow-missing-machine)
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fi
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libcxx/utils/ci/lnt/plan-benchmarks --commit-list anchors.txt --lnt-url "${LNT_URL}" --test-suite libcxx \
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--machine "${MACHINE}" --samples "${SAMPLES}" "${allow_missing[@]}" \
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--output plan.jsonl
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- name: Request the missing runs
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env:
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GITHUB_TOKEN: ${{ github.token }}
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run: |
131+
dry_run=()
132+
if [ "${DRY_RUN}" = "true" ]; then
133+
dry_run=(--dry-run)
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fi
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libcxx/utils/ci/lnt/dispatch-benchmarks --work-items plan.jsonl --test-suite-commit "${BENCHMARK_SUITE_VERSION}" \
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--max-in-flight "${MAX_IN_FLIGHT}" --lnt-url "${LNT_URL}" \
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--output dispatched.jsonl "${dry_run[@]}"

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