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name: coverage
on:
push:
branches:
- main
paths-ignore:
- 'README.md'
- 'COPYRIGHT'
- 'LICENSE*'
- '**.md'
- '**.txt'
pull_request:
paths-ignore:
- 'README.md'
- 'COPYRIGHT'
- 'LICENSE*'
- '**.md'
- '**.txt'
workflow_dispatch:
env:
CARGO_TERM_COLOR: always
# Matrix dimensions covered for Codecov to reflect the full SIMD tier
# cascade:
#
# - aarch64 NEON (macOS): covers src/skip/neon.rs plus the
# `neon_available()` branch of the dispatcher.
# - aarch64 scalar-forced: covers the scalar fallback branch of the
# dispatcher on aarch64 (reached only when `memspan_force_scalar` is
# set, since NEON is mandatory on Apple Silicon otherwise).
# - x86_64 default (Linux): covers whichever top tier the runner CPU
# supports (typically AVX2 on AMD Milan ubuntu-latest runners).
# - x86_64 AVX2-max: `--cfg memspan_disable_avx512` forces the AVX2
# dispatcher branch regardless of runner CPU.
# - x86_64 SSE4.2-max: `--cfg memspan_disable_avx512 --cfg
# memspan_disable_avx2` forces the SSE4.2 dispatcher branch.
# - x86_64 scalar-forced: `--cfg memspan_force_scalar` forces the scalar
# dispatcher branch on x86_64.
# - x86_64 Windows: validates the MSVC toolchain compiles the
# intrinsic-heavy modules and reports coverage of their default runtime
# path.
#
# Each platform excludes SIMD files it cannot compile (gated behind
# `#[cfg(target_arch)]`). Without exclusion, tarpaulin would count them
# as 0/N uncovered lines, dragging down the per-platform number. After
# Codecov merges, every arch file is covered by its native host.
jobs:
coverage:
name: coverage (${{ matrix.label }})
strategy:
matrix:
include:
# ---- aarch64 (macOS) ----
- os: macos-latest
label: macos-aarch64
rustflags: ''
exclude_arch: >-
--exclude-files 'src/skip/sse42.rs'
--exclude-files 'src/skip/avx2.rs'
--exclude-files 'src/skip/avx512.rs'
--exclude-files 'src/skip/simd128.rs'
--exclude-files 'src/needles/arch/x86.rs'
--exclude-files 'src/needles/arch/wasm32.rs'
- os: macos-latest
label: macos-aarch64-scalar
rustflags: '--cfg memspan_force_scalar'
exclude_arch: >-
--exclude-files 'src/skip/sse42.rs'
--exclude-files 'src/skip/avx2.rs'
--exclude-files 'src/skip/avx512.rs'
--exclude-files 'src/skip/simd128.rs'
--exclude-files 'src/needles/arch/x86.rs'
--exclude-files 'src/needles/arch/wasm32.rs'
# ---- x86_64 (Linux) ----
# Standard ubuntu-latest is AMD EPYC (no AVX-512), so the
# default tier exercises AVX2 at runtime. AVX-512 correctness
# is verified under Intel SDE in the `test-sde` ci.yml job.
- os: ubuntu-latest
label: linux-x86_64
rustflags: ''
exclude_arch: >-
--exclude-files 'src/skip/neon.rs'
--exclude-files 'src/skip/simd128.rs'
--exclude-files 'src/needles/arch/wasm32.rs'
- os: ubuntu-latest
label: linux-x86_64-avx2-max
rustflags: '--cfg memspan_disable_avx512'
exclude_arch: >-
--exclude-files 'src/skip/neon.rs'
--exclude-files 'src/skip/simd128.rs'
--exclude-files 'src/needles/arch/wasm32.rs'
- os: ubuntu-latest
label: linux-x86_64-sse42-max
rustflags: '--cfg memspan_disable_avx512 --cfg memspan_disable_avx2'
exclude_arch: >-
--exclude-files 'src/skip/neon.rs'
--exclude-files 'src/skip/simd128.rs'
--exclude-files 'src/needles/arch/wasm32.rs'
- os: ubuntu-latest
label: linux-x86_64-scalar
rustflags: '--cfg memspan_force_scalar'
exclude_arch: >-
--exclude-files 'src/skip/neon.rs'
--exclude-files 'src/skip/simd128.rs'
--exclude-files 'src/needles/arch/wasm32.rs'
# ---- x86_64 (Windows) ----
- os: windows-latest
label: windows-x86_64
rustflags: ''
exclude_arch: >-
--exclude-files 'src/skip/neon.rs'
--exclude-files 'src/skip/simd128.rs'
--exclude-files 'src/needles/arch/wasm32.rs'
runs-on: ${{ matrix.os }}
env:
RUSTFLAGS: ${{ matrix.rustflags }}
steps:
- uses: actions/checkout@v6
- name: Install Rust
run: rustup update stable --no-self-update && rustup default stable
- name: Install cargo-tarpaulin
run: cargo install cargo-tarpaulin
- name: Generate coverage
shell: bash
run: |
mkdir -p coverage
cargo tarpaulin \
--all-features \
--run-types tests \
--exclude-files 'benches/*' \
${{ matrix.exclude_arch }} \
--out xml \
--output-dir coverage
continue-on-error: false
- name: Upload coverage artifact
uses: actions/upload-artifact@v7
with:
name: coverage-${{ matrix.label }}
path: coverage/cobertura.xml
upload-codecov:
name: Upload merged coverage to Codecov
needs: coverage
runs-on: ubuntu-latest
if: always()
strategy:
fail-fast: false
matrix:
label:
- macos-aarch64
- macos-aarch64-scalar
- linux-x86_64
- linux-x86_64-avx2-max
- linux-x86_64-sse42-max
- linux-x86_64-scalar
- windows-x86_64
steps:
- uses: actions/checkout@v6
- name: Download ${{ matrix.label }} report
uses: actions/download-artifact@v6
with:
name: coverage-${{ matrix.label }}
path: coverage/
- name: Upload ${{ matrix.label }} to Codecov
uses: codecov/codecov-action@v6
with:
files: coverage/cobertura.xml
flags: ${{ matrix.label }}
fail_ci_if_error: true
env:
CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}