Files
RedBear-OS/local/recipes/dev/libclc/source/libcxx/utils/libcxx-compare-benchmarks
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class)
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

74 lines
2.1 KiB
Bash
Executable File

#!/usr/bin/env bash
set -e
PROGNAME="$(basename "${0}")"
MONOREPO_ROOT="$(realpath $(dirname "${PROGNAME}"))"
function usage() {
cat <<EOF
Usage:
${PROGNAME} [-h|--help] <baseline-build> <candidate-build> benchmarks... [-- gbench-args...]
Compare the given benchmarks between the baseline and the candidate build directories.
This requires those benchmarks to have already been generated in both build directories.
<baseline-build> The path to the build directory considered the baseline.
<candidate-build> The path to the build directory considered the candidate.
benchmarks... Paths of the benchmarks to compare. Those paths are relative to '<monorepo-root>'.
[-- gbench-args...] Any arguments provided after '--' will be passed as-is to GoogleBenchmark's compare.py tool.
Example
=======
$ libcxx-lit build1/ -sv libcxx/test/benchmarks/algorithms/for_each.bench.cpp
$ libcxx-lit build2/ -sv libcxx/test/benchmarks/algorithms/for_each.bench.cpp
$ ${PROGNAME} build1/ build2/ libcxx/test/benchmarks/algorithms/for_each.bench.cpp
EOF
}
if [[ "${1}" == "-h" || "${1}" == "--help" ]]; then
usage
exit 0
fi
if [[ $# -lt 1 ]]; then
usage
exit 1
fi
baseline="${1}"
candidate="${2}"
shift; shift
GBENCH="${MONOREPO_ROOT}/third-party/benchmark"
python3 -m venv /tmp/libcxx-compare-benchmarks-venv
source /tmp/libcxx-compare-benchmarks-venv/bin/activate
pip3 install -r ${GBENCH}/tools/requirements.txt
benchmarks=""
while [[ $# -gt 0 ]]; do
if [[ "${1}" == "--" ]]; then
shift
break
fi
benchmarks+=" ${1}"
shift
done
for benchmark in ${benchmarks}; do
base="$(${MONOREPO_ROOT}/libcxx/utils/libcxx-benchmark-json ${baseline} ${benchmark})"
cand="$(${MONOREPO_ROOT}/libcxx/utils/libcxx-benchmark-json ${candidate} ${benchmark})"
if [[ ! -e "${base}" ]]; then
echo "Benchmark ${benchmark} does not exist in the baseline"
continue
fi
if [[ ! -e "${cand}" ]]; then
echo "Benchmark ${benchmark} does not exist in the candidate"
continue
fi
"${GBENCH}/tools/compare.py" benchmarks "${base}" "${cand}" ${@}
done