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‎.gitmodules‎

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[submodule "libm"]
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path = libm
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path = compiler-builtins/libm
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url = https://github.com/rust-lang/libm.git

‎compiler-builtins/libm/.editorconfig‎

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# EditorConfig helps developers define and maintain consistent
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# coding styles between different editors and IDEs
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# editorconfig.org
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root = true
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[*]
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end_of_line = lf
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charset = utf-8
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trim_trailing_whitespace = true
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insert_final_newline = true
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indent_style = space
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indent_size = 4
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[*.md]
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# double whitespace at end of line
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# denotes a line break in Markdown
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trim_trailing_whitespace = false
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[*.yml]
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indent_size = 2

‎compiler-builtins/libm/.git-blame-ignore-revs‎

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# Use `git config blame.ignorerevsfile .git-blame-ignore-revs` to make
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# `git blame` ignore the following commits.
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# Reformat with a new `.rustfmt.toml`
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5882cabb83c30bf7c36023f9a55a80583636b0e8

‎compiler-builtins/libm/.github/workflows/main.yaml‎

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name: CI
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on:
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push:
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branches:
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- master
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pull_request:
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env:
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CARGO_TERM_COLOR: always
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RUSTDOCFLAGS: -Dwarnings
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RUSTFLAGS: -Dwarnings
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RUST_BACKTRACE: full
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BENCHMARK_RUSTC: nightly-2025-01-16 # Pin the toolchain for reproducable results
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jobs:
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test:
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name: Build and test
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timeout-minutes: 60
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strategy:
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fail-fast: false
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matrix:
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include:
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- target: aarch64-apple-darwin
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os: macos-15
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# FIXME: pinned due to https://github.com/llvm/llvm-project/issues/127804
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channel: nightly-2025-02-07
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- target: aarch64-unknown-linux-gnu
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os: ubuntu-24.04-arm
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# FIXME: pinned due to https://github.com/llvm/llvm-project/issues/127804
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channel: nightly-2025-02-07
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- target: aarch64-pc-windows-msvc
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os: windows-2025
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build_only: 1 # Can't run on x86 hosts
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- target: arm-unknown-linux-gnueabi
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os: ubuntu-24.04
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- target: arm-unknown-linux-gnueabihf
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os: ubuntu-24.04
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- target: armv7-unknown-linux-gnueabihf
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os: ubuntu-24.04
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- target: i586-unknown-linux-gnu
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os: ubuntu-24.04
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- target: i686-unknown-linux-gnu
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os: ubuntu-24.04
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- target: loongarch64-unknown-linux-gnu
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os: ubuntu-24.04
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- target: powerpc-unknown-linux-gnu
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os: ubuntu-24.04
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- target: powerpc64-unknown-linux-gnu
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os: ubuntu-24.04
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- target: powerpc64le-unknown-linux-gnu
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os: ubuntu-24.04
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- target: riscv64gc-unknown-linux-gnu
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os: ubuntu-24.04
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- target: thumbv6m-none-eabi
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os: ubuntu-24.04
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- target: thumbv7em-none-eabi
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os: ubuntu-24.04
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- target: thumbv7em-none-eabihf
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os: ubuntu-24.04
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- target: thumbv7m-none-eabi
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os: ubuntu-24.04
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- target: x86_64-unknown-linux-gnu
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os: ubuntu-24.04
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- target: x86_64-apple-darwin
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os: macos-13
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- target: wasm32-unknown-unknown
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os: ubuntu-24.04
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build_only: 1
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- target: i686-pc-windows-msvc
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os: windows-2025
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- target: x86_64-pc-windows-msvc
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os: windows-2025
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- target: i686-pc-windows-gnu
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os: windows-2025
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# FIXME: pinned due to https://github.com/rust-lang/rust/issues/136795
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channel: nightly-2025-02-07-i686-gnu
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- target: x86_64-pc-windows-gnu
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os: windows-2025
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channel: nightly-x86_64-gnu
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runs-on: ${{ matrix.os }}
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env:
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BUILD_ONLY: ${{ matrix.build_only }}
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steps:
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- name: Print runner information
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run: uname -a
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- uses: actions/checkout@v4
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with:
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submodules: true
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- name: Install Rust (rustup)
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shell: bash
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run: |
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channel="nightly"
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# Account for channels that have required components (MinGW)
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[ -n "${{ matrix.channel }}" ] && channel="${{ matrix.channel }}"
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rustup update "$channel" --no-self-update
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rustup default "$channel"
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rustup target add "${{ matrix.target }}"
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rustup component add clippy llvm-tools-preview
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- uses: taiki-e/install-action@nextest
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- uses: Swatinem/rust-cache@v2
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with:
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key: ${{ matrix.target }}
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- name: Verify API list
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if: matrix.os == 'ubuntu-24.04'
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run: python3 etc/update-api-list.py --check
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# Non-linux tests just use our raw script
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- name: Run locally
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if: matrix.os != 'ubuntu-24.04' || contains(matrix.target, 'wasm')
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shell: bash
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run: ./ci/run.sh ${{ matrix.target }}
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# Otherwise we use our docker containers to run builds
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- name: Run in Docker
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if: matrix.os == 'ubuntu-24.04' && !contains(matrix.target, 'wasm')
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run: |
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rustup target add x86_64-unknown-linux-musl
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cargo generate-lockfile && ./ci/run-docker.sh ${{ matrix.target }}
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- name: Print test logs if available
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if: always()
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run: if [ -f "target/test-log.txt" ]; then cat target/test-log.txt; fi
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shell: bash
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clippy:
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name: Clippy
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runs-on: ubuntu-24.04
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timeout-minutes: 10
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steps:
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- uses: actions/checkout@master
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with:
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submodules: true
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- name: Install Rust
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run: |
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rustup update nightly --no-self-update
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rustup default nightly
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rustup component add clippy
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- uses: Swatinem/rust-cache@v2
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- run: cargo clippy --all --all-features --all-targets
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builtins:
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name: Check use with compiler-builtins
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runs-on: ubuntu-24.04
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timeout-minutes: 10
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steps:
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- uses: actions/checkout@master
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- name: Install Rust
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run: rustup update nightly --no-self-update && rustup default nightly
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- uses: Swatinem/rust-cache@v2
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- run: cargo check --manifest-path crates/compiler-builtins-smoke-test/Cargo.toml
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- run: cargo test --manifest-path crates/compiler-builtins-smoke-test/Cargo.toml
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benchmarks:
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name: Benchmarks
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runs-on: ubuntu-24.04
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timeout-minutes: 20
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steps:
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- uses: actions/checkout@master
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with:
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submodules: true
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- uses: taiki-e/install-action@cargo-binstall
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- name: Set up dependencies
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run: |
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sudo apt update
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sudo apt install -y valgrind gdb libc6-dbg # Needed for iai-callgrind
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rustup update "$BENCHMARK_RUSTC" --no-self-update
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rustup default "$BENCHMARK_RUSTC"
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# Install the version of iai-callgrind-runner that is specified in Cargo.toml
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iai_version="$(cargo metadata --format-version=1 --features icount |
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jq -r '.packages[] | select(.name == "iai-callgrind").version')"
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cargo binstall -y iai-callgrind-runner --version "$iai_version"
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sudo apt-get install valgrind
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- uses: Swatinem/rust-cache@v2
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- name: Run icount benchmarks
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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PR_NUMBER: ${{ github.event.pull_request.number }}
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run: ./ci/bench-icount.sh
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- name: Upload the benchmark baseline
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uses: actions/upload-artifact@v4
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with:
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name: ${{ env.BASELINE_NAME }}
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path: ${{ env.BASELINE_NAME }}.tar.xz
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- name: Run wall time benchmarks
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run: |
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# Always use the same seed for benchmarks. Ideally we should switch to a
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# non-random generator.
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export LIBM_SEED=benchesbenchesbenchesbencheswoo!
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cargo bench --all --features short-benchmarks,build-musl,force-soft-floats
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- name: Print test logs if available
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if: always()
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run: if [ -f "target/test-log.txt" ]; then cat target/test-log.txt; fi
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shell: bash
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msrv:
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name: Check MSRV
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runs-on: ubuntu-24.04
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timeout-minutes: 10
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env:
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RUSTFLAGS: # No need to check warnings on old MSRV, unset `-Dwarnings`
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steps:
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- uses: actions/checkout@master
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- run: |
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msrv="$(perl -ne 'print if s/rust-version\s*=\s*"(.*)"/\1/g' Cargo.toml)"
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echo "MSRV: $msrv"
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echo "MSRV=$msrv" >> "$GITHUB_ENV"
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- name: Install Rust
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run: rustup update "$MSRV" --no-self-update && rustup default "$MSRV"
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- uses: Swatinem/rust-cache@v2
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- run: cargo build -p libm
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rustfmt:
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name: Rustfmt
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runs-on: ubuntu-24.04
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timeout-minutes: 10
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steps:
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- uses: actions/checkout@master
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- name: Install Rust
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run: |
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rustup update nightly --no-self-update
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rustup default nightly
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rustup component add rustfmt
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- run: cargo fmt -- --check
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# Determine which extensive tests should be run based on changed files.
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calculate_extensive_matrix:
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name: Calculate job matrix
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runs-on: ubuntu-24.04
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timeout-minutes: 10
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outputs:
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matrix: ${{ steps.script.outputs.matrix }}
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steps:
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- uses: actions/checkout@v4
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with:
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fetch-depth: 100
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- name: Fetch pull request ref
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run: git fetch origin "$GITHUB_REF:$GITHUB_REF"
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if: github.event_name == 'pull_request'
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- run: python3 ci/ci-util.py generate-matrix >> "$GITHUB_OUTPUT"
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id: script
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extensive:
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name: Extensive tests for ${{ matrix.ty }}
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needs:
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# Wait on `clippy` so we have some confidence that the crate will build
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- clippy
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- calculate_extensive_matrix
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runs-on: ubuntu-24.04
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timeout-minutes: 180
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strategy:
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matrix:
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# Use the output from `calculate_extensive_matrix` to calculate the matrix
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# FIXME: it would be better to run all jobs (i.e. all types) but mark those that
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# didn't change as skipped, rather than completely excluding the job. However,
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# this is not currently possible https://github.com/actions/runner/issues/1985.
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include: ${{ fromJSON(needs.calculate_extensive_matrix.outputs.matrix).matrix }}
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env:
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CHANGED: ${{ matrix.changed }}
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steps:
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- uses: actions/checkout@v4
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with:
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submodules: true
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- name: Install Rust
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run: |
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rustup update nightly --no-self-update
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rustup default nightly
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- uses: Swatinem/rust-cache@v2
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- name: Run extensive tests
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run: |
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echo "Changed: '$CHANGED'"
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if [ -z "$CHANGED" ]; then
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echo "No tests to run, exiting."
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exit
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fi
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# Run the non-extensive tests first to catch any easy failures
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cargo t --profile release-checked -- "$CHANGED"
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LIBM_EXTENSIVE_TESTS="$CHANGED" cargo t \
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--features build-mpfr,unstable,force-soft-floats \
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--profile release-checked \
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-- extensive
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- name: Print test logs if available
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run: if [ -f "target/test-log.txt" ]; then cat target/test-log.txt; fi
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shell: bash
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success:
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needs:
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- test
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- builtins
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- benchmarks
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- msrv
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- rustfmt
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- extensive
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runs-on: ubuntu-24.04
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timeout-minutes: 10
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# GitHub branch protection is exceedingly silly and treats "jobs skipped because a dependency
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# failed" as success. So we have to do some contortions to ensure the job fails if any of its
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# dependencies fails.
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if: always() # make sure this is never "skipped"
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steps:
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# Manually check the status of all dependencies. `if: failure()` does not work.
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- name: check if any dependency failed
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run: jq --exit-status 'all(.result == "success")' <<< '${{ toJson(needs) }}'

‎compiler-builtins/libm/.github/workflows/publish.yaml‎

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name: Release-plz
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permissions:
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pull-requests: write
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contents: write
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on:
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push:
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branches:
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- master
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jobs:
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release-plz:
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name: Release-plz
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runs-on: ubuntu-24.04
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steps:
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- name: Checkout repository
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uses: actions/checkout@v4
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with:
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fetch-depth: 0
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- name: Install Rust (rustup)
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run: rustup update nightly --no-self-update && rustup default nightly
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- name: Run release-plz
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uses: MarcoIeni/[email protected]
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

‎compiler-builtins/libm/.gitignore‎

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**.bk
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.#*
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/bin
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/math/src
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target
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Cargo.lock
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**.tar.gz
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# Benchmark cache
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iai-home
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baseline-*

‎compiler-builtins/libm/.gitmodules‎

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[submodule "musl"]
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path = crates/musl-math-sys/musl
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url = https://git.musl-libc.org/git/musl
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shallow = true

‎compiler-builtins/libm/.rustfmt.toml‎

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# This matches rustc
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style_edition = "2024"
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use_small_heuristics = "Max"
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group_imports = "StdExternalCrate"
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imports_granularity = "Module"

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