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Merged
ZuseZ4 merged 12 commits into from
Oct 24, 2025
Merged

Try to add CI for rust #30

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c314d0b
Add CI
I-Al-Istannen Oct 22, 2025
af54c7d
We do not test anything
I-Al-Istannen Oct 22, 2025
e214930
Debug with SSH
I-Al-Istannen Oct 22, 2025
86508be
Revert "Debug with SSH"
I-Al-Istannen Oct 24, 2025
646bc07
Use ccache
I-Al-Istannen Oct 24, 2025
c90f58a
Limit matrix
I-Al-Istannen Oct 24, 2025
38f6b79
Trigger CI and hopefully inherit the cache :^)
I-Al-Istannen Oct 24, 2025
ad002c7
Document a bit, fix cache key
I-Al-Istannen Oct 24, 2025
a574459
Install ccache via brew on macos
I-Al-Istannen Oct 24, 2025
a0b2d30
Use non-deprecated syntax for step outputs
I-Al-Istannen Oct 24, 2025
4d2e599
Disable macos for now
I-Al-Istannen Oct 24, 2025
e46d4cd
Revert "We do not test anything"
I-Al-Istannen Oct 24, 2025
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91 changes: 91 additions & 0 deletions .github/workflows/enzyme-rust.yml
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Original file line number Diff line number Diff line change
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name: Rust Enzyme CI

on:
push:
branches:
- main
pull_request:
branches:
- main
merge_group:

jobs:
build:
name: Enzyme CI Rust ${{ matrix.os }} - ${{ matrix.rust-version }}
runs-on: ${{ matrix.os }}
strategy:
fail-fast: false
matrix:
os:
- ubuntu-latest
#- macOS-latest # broken: https://github.com/rust-lang/enzyme/actions/runs/18791780110/job/53623553780?pr=30
rust-version:
- master
- b2ee1b333aea9951c3eefa4967098cc763de59ca
steps:
- name: Clone rust
run: |
git clone --depth=1 https://github.com/rust-lang/rust .
- name: Adjust git settings
run: |
git config --global user.email "[email protected]"
git config --global user.name "CI"

# Infra: Setup caching using ccache
- name: Install ccache (Linux)
if: runner.os == 'Linux'
run: |
sudo apt update && sudo apt install -y ccache
- name: Install ccache (macOS)
if: runner.os == 'macOS'
run: |
brew install ccache
- name: Get LLVM project commit SHA for use as cache key
id: llvm-commit
run: |
COMMIT_HASH="$(git ls-tree --object-only HEAD src/llvm-project)"
echo "LLVM should be on commit: '$COMMIT_HASH'"
echo "commit_hash=$COMMIT_HASH" >> $GITHUB_OUTPUT
- name: Cache ccache
id: cache-ccache
uses: actions/cache@v4
with:
path: ~/.cache/ccache
key: ${{ runner.os }}-ccache-${{ steps['llvm-commit'].outputs.commit_hash }}
# We fall back to *any* cache. It is ccache, it can handle invalidation
# and eviction on its own. TODO: We might want to limit its size / use
# evict-older-than?
restore-keys: |
${{ runner.os }}-ccache-${{ steps['llvm-commit'].outputs.commit_hash }}
${{ runner.os }}-ccache-

# Now we get to the actual meat. Initialize enzyme at $GITHUB_SHA to ensure we
# actually test the right commit :)
- name: Init enzyme submodule
run: |
git submodule update --init src/tools/enzyme
- name: Update enzyme submodule
run: |
pushd src/tools/enzyme || exit 1
git fetch origin $GITHUB_SHA
git checkout $GITHUB_SHA
popd || exit 1

git add src/tools/enzyme && git commit -m "Set Enzyme version"

# And now we build!
- name: Configure
run: |
./configure --release-channel=nightly --enable-llvm-enzyme --enable-llvm-assertions --enable-option-checking --disable-docs --enable-ccache
- name: Inspect ccache
run: |
ccache --show-config
ccache --show-stats
ccache --zero-stats # rebaseline
- name: Build
run: |
./x build --stage 1 library
- name: Inspect ccache
run: |
ccache --show-config
ccache --show-stats
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