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[libc++] Allow passing individual commits to LNT runners (#189020)

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This is useful for generating specific data points.
This commit is contained in:
Louis Dionne 2026-03-27 11:14:55 -04:00 committed by GitHub
parent b2f5992412
commit e56161ef98
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3 changed files with 68 additions and 33 deletions
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5
libcxx/utils/ci/lnt/runners/README.md
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@ -3,5 +3,8 @@
This directory defines some LNT runners for tracking libc++ performance. A runner can be run with
```
bash <(curl -Ls https://raw.githubusercontent.com/llvm/llvm-project/main/libcxx/utils/ci/lnt/runners/RUNNER) <ARGS...>
bash <(curl -Ls https://raw.githubusercontent.com/llvm/llvm-project/main/libcxx/utils/ci/lnt/runners/RUNNER) <path-to-llvm-monorepo> [-- commit ...]
```
By default, runners poll `lnt.llvm.org` to discover un-benchmarked commits. If commits are provided
after `--`, only those commits are benchmarked and the runner exits.

49
libcxx/utils/ci/lnt/runners/apple-m5-clang21
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@ -5,27 +5,44 @@
#
if [ -z "${1}" ] || [ ! -d "${1}" ]; then
echo "usage: ${0} <path-to-llvm-monorepo>"
echo "usage: ${0} <path-to-llvm-monorepo> [-- commit ...]"
echo "error: Please provide a valid path to the LLVM monorepo."
exit 1
fi
MONOREPO_DIR=$(cd "${1}" && pwd)
shift
if [ "${1}" = "--" ]; then
shift
fi
COMMITS=("$@")
export SDKROOT=$(xcrun --show-sdk-path)
while true; do
${MONOREPO_DIR}/libcxx/utils/ci/lnt/commit-watch --git-repo ${MONOREPO_DIR} \
--lnt-url http://lnt.llvm.org --test-suite libcxx2 --machine apple-m5-clang21 | \
while read commit; do \
${MONOREPO_DIR}/libcxx/utils/ci/lnt/run-benchmarks \
--test-suite-commit 0eefb2682bf8c04954c46e91916b5164d8424702 \
--git-repo ${MONOREPO_DIR} \
--lnt-url http://lnt.llvm.org \
--test-suite libcxx2 \
--machine apple-m5-clang21 \
--compiler $(brew --prefix)/opt/llvm/bin/clang++ \
--benchmark-commit ${commit}; \
done
sleep 60 # To avoid busy looping in case something goes really wrong
done
COMPILER=$(brew --prefix)/opt/llvm/bin/clang++
run_benchmarks() {
${MONOREPO_DIR}/libcxx/utils/ci/lnt/run-benchmarks \
--test-suite-commit 0eefb2682bf8c04954c46e91916b5164d8424702 \
--git-repo ${MONOREPO_DIR} \
--lnt-url http://lnt.llvm.org \
--test-suite libcxx2 \
--machine apple-m5-clang21 \
--compiler ${COMPILER} \
--benchmark-commit ${1}
}
if [ ${#COMMITS[@]} -gt 0 ]; then
for commit in "${COMMITS[@]}"; do
run_benchmarks ${commit}
done
else
while true; do
${MONOREPO_DIR}/libcxx/utils/ci/lnt/commit-watch --git-repo ${MONOREPO_DIR} \
--lnt-url http://lnt.llvm.org --test-suite libcxx2 --machine apple-m5-clang21 | \
while read commit; do \
run_benchmarks ${commit}
done
sleep 60 # To avoid busy looping in case something goes really wrong
done
fi

47
libcxx/utils/ci/lnt/runners/apple-m5-xcode26
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@ -5,25 +5,40 @@
#
if [ -z "${1}" ] || [ ! -d "${1}" ]; then
echo "usage: ${0} <path-to-llvm-monorepo>"
echo "usage: ${0} <path-to-llvm-monorepo> [-- commit ...]"
echo "error: Please provide a valid path to the LLVM monorepo."
exit 1
fi
MONOREPO_DIR=$(cd "${1}" && pwd)
shift
if [ "${1}" = "--" ]; then
shift
fi
COMMITS=("$@")
while true; do
${MONOREPO_DIR}/libcxx/utils/ci/lnt/commit-watch --git-repo ${MONOREPO_DIR} \
--lnt-url http://lnt.llvm.org --test-suite libcxx2 --machine apple-m5-xcode26 | \
while read commit; do \
${MONOREPO_DIR}/libcxx/utils/ci/lnt/run-benchmarks \
--test-suite-commit 0eefb2682bf8c04954c46e91916b5164d8424702 \
--git-repo ${MONOREPO_DIR} \
--lnt-url http://lnt.llvm.org \
--test-suite libcxx2 \
--machine apple-m5-xcode26 \
--compiler clang++ \
--benchmark-commit ${commit}; \
done
sleep 60 # To avoid busy looping in case something goes really wrong
done
run_benchmarks() {
${MONOREPO_DIR}/libcxx/utils/ci/lnt/run-benchmarks \
--test-suite-commit 0eefb2682bf8c04954c46e91916b5164d8424702 \
--git-repo ${MONOREPO_DIR} \
--lnt-url http://lnt.llvm.org \
--test-suite libcxx2 \
--machine apple-m5-xcode26 \
--compiler clang++ \
--benchmark-commit ${1}
}
if [ ${#COMMITS[@]} -gt 0 ]; then
for commit in "${COMMITS[@]}"; do
run_benchmarks ${commit}
done
else
while true; do
${MONOREPO_DIR}/libcxx/utils/ci/lnt/commit-watch --git-repo ${MONOREPO_DIR} \
--lnt-url http://lnt.llvm.org --test-suite libcxx2 --machine apple-m5-xcode26 | \
while read commit; do \
run_benchmarks ${commit}
done
sleep 60 # To avoid busy looping in case something goes really wrong
done
fi