Cache key isolation: Include the build flavour (ccwarn/asan/gcov) in the
build ccache key, so the coverage (gcov), asan, and RTLMeter
(ccwarn-off) configurations no longer share and thrash the single
'<runs-on>-<cc>' bucket, nor warm-start from each other's (near-useless)
caches.
Prune stale entries instead of a fixed size cap: After building/testing,
evict ccache entries this run did not touch (--evict-older-than, based
on the run's own duration). This bounds the saved cache to the current
working set, so CCACHE_MAXSIZE and CCACHE_LIMIT_MULTIPLE are no longer
needed and are removed (ccache falls back to its 5G default ceiling, but
is realistically much smaller).
ccache configuration:
- Drop CCACHE_COMPRESS (already the default in ccache 4.x).
- Add CCACHE_COMPILERCHECK=content, so a changed compiler mtime on a rebuilt
ephemeral runner image does not invalidate the whole restored cache.
- Hoist all ccache-related variables (CACHE_BASE_KEY, CCACHE_*, CXX) to the
workflow-level env.
Remove dead ccache scaffolding:
- reusable-lint-py: the job never compiles or caches; drop its ccache env.
- reusable-rtlmeter-run: remove the disabled persistent-cache step and its
storage variables; keep CCACHE_DISABLE=1, since caching must stay off to
keep RTLMeter timings representative.
Store test job ccache as artifacts for reuse
Code coverage and RTLMeter complete (concluding 'skipped') on branch
pushes where they do no work, and each completion fires the Pages
workflow_run trigger. Rebuilding and redeploying master's pages for
these no-op events is wasteful.
Gate the build job so a workflow_run whose upstream conclusion is
'skipped' does nothing; deploy and notify need build, so they
cascade-skip.
Route such no-op runs to their own throwaway concurrency group. In the
shared 'pages' group they would, as the newest queued run, cancel a
pending real run and then deploy nothing (concurrency keeps only the
in-progress and newest pending run). Real runs keep sharing 'pages' and
serialize as before.
Add retry to deploy step to reduce flakyness due to the Pages back end.
Fix trigger on workflow file changes.
The Windows build never actually used ccache; the '.ccache' directory
only ever held the win_flex_bison install, and cmake/MSVC did no compiler
caching. Clean this up:
- Drop the CCACHE_* environment variables from the job (meaningless here).
- Store win_flex_bison in a dedicated 'win_flex_bison' directory instead of
the misleadingly named '.ccache', and cache just that (static key, as it
is a fixed third-party tool).
- Set WIN_FLEX_BISON inside ci-win-compile.ps1 as an absolute path, rather
than in the workflow, making the script self-contained.
- Use the runner's processor count for build parallelism instead of a fixed
'-j 3', in both ci-win-compile.ps1 and ci-win-test.ps1.
- Remove the verilator-win.zip archive and upload steps; nothing consumes
that artifact.
- Build Verilator with the Ninja generator from an MSVC developer shell
instead of MSBuild. MSBuild only parallelizes across projects, and
Verilator is a single project, so it compiled serially; Ninja keeps all
cores busy. Also compile with /Od: this job only checks that Verilator
builds and can verilate an example, so an optimized binary is not needed
and the otherwise-dominant optimizer time is wasted.
- Merge reusable-rtlmeter-build.yml into reusable-build.yml, selected by
an 'install' flag: archive the installed Verilator for RTLMeter, or
the whole repository tree for the test jobs.
- Align reusable-test.yml input arguments with reusable-build.yml
- Pass build/test options as booleans instead of 0/1.
- Inline the single-entry build matrices, and hoist matrix keys that are
constant across a job.
- Split the monolithic ci-script.bash into ci-build.bash and
ci-test.bash, with shared setup in ci-common.bash.
- Pass job parameters as explicit command-line options rather than
environment variables (--compiler, --prefix, --suite, --asan,
--gcov, --reloc, --ccwarn).
- Detect the host OS and distribution at runtime (uname,
/etc/os-release) instead of the legacy Travis-era CI_OS_NAME,
CI_RUNS_ON and CI_BUILD_STAGE_NAME variables.
- Remove dead code: FreeBSD support, Windows wavediff install, the
unused CI_COMMIT variable, and various redundant operations.
- Inline the single-entry build-job matrices.
- Rename osx to macOS
- Refuse to run these ci scripts outside GitHub Actions to protect
developer checkouts.
PR #7776 removed Ubuntu 22.04 clang from the test matrix, which was the
only one testing the relocation of an installation. Add back under
Ubuntu 24.04 clang.
- If any simulated cycle counts mismatch, report them and fail the job
- Keep "Elapsed" only in cppbuild
- Ignore "Elapsed" and "CPU" samples less than 30 seconds - too noisy
- Widen acceptable ranges on "Elapsed" and "Memory"
- Add badge legend
The intention was to run scheduled with max 2 parallel jobs, however,
due to a bug they were run with 7 just like PR runs. This didn't seem to
cause problems, so change it all to 7, except for the hierarchical,
which runs on 6, for a total of a maximum 20 parallel RTLMeter run jobs
per workflow run.
Small chance a bug gets through, but this will avoid multiple runs on the
common case of reformatting users' pull requests, and related run
cancellation problems.
Add a script that prints the job matrix of cases to run with RTLMeter.
This enables running different sets based on parameters. It will run
everything on scheduled nightly runs, but only a subset on PRs (to reduce
time and variance due to short cases).
Also prints the job matrix in descending duration order, which
effectively makes GitHub actions schedule longest jobs first to reduce
total workflow latency.
Add jemalloc as an alternative malloc implementation for the Verilator
binary. When both tcmalloc and jemalloc are available, jemalloc is
preferred due to its better performance on RTLMeter.
The new --enable-jemalloc flag (default=check) mirrors the existing
--enable-tcmalloc behavior: auto-detected at configure time, supports
both static and dynamic linking, and is disabled when --enable-dev-asan
is active.
Geza Lore
dependabot[bot]
Wilson Snyder
Yangyu Chen