foot/meson-pgo.sh
2021-09-12 10:39:43 +02:00

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#!/bin/sh
set -e
usage_and_die() {
echo "Usage: ${0} none|partial|full|full-headless-sway|[auto] <source-dir> <build-dir>"
exit 1
}
[ ${#} -ge 3 ] || usage_and_die
mode=${1}
source_dir=$(realpath "${2}")
build_dir=$(realpath "${3}")
shift 3
case ${mode} in
none|auto|partial|full|full-headless-sway)
;;
*)
usage_and_die
;;
esac
# meson will complain if source dir is invalid
if [ -d "${build_dir}" ]; then
echo "${build_dir}: build directory already exists"
exit 1
fi
compiler=other
do_pgo=no
CFLAGS="${CFLAGS} -O3"
case $(${CC-cc} --version) in
*GCC*)
compiler=gcc
do_pgo=yes
;;
*clang*)
compiler=clang
if command -v llvm-profdata > /dev/null; then
do_pgo=yes
CFLAGS="${CFLAGS} -Wno-ignored-optimization-argument"
fi
;;
esac
case ${mode} in
none)
do_pgo=no
;;
auto)
if command -v sway > /dev/null; then
mode=full-headless-sway
elif [ -n "${WAYLAND_DISPLAY+x}" ]; then
mode=full
else
mode=partial
fi
;;
esac
# echo "source: ${source_dir}"
# echo "build: ${build_dir}"
# echo "compiler: ${compiler}"
# echo "mode: ${mode}"
export CFLAGS
meson "${@}" "${build_dir}"
if [ ${do_pgo} = yes ]; then
find . -name "*.gcda" -delete
meson configure "${build_dir}" -Db_pgo=generate
ninja -C "${build_dir}"
# If fcft/tllist are subprojects, we need to ensure their tests
# have been executed, or well get “profile count data file not
# found” errors.
ninja -C "${build_dir}" test
script_options="--scroll --scroll-region --colors-regular --colors-bright --colors-256 --colors-rgb --attr-bold --attr-italic --attr-underline --sixel"
tmp_file=$(mktemp)
pwd=$(pwd)
cleanup() {
rm -f "${tmp_file}"
cd "${pwd}"
}
trap cleanup EXIT INT HUP TERM
cd "${build_dir}"
case ${mode} in
full)
./footclient --version
./foot \
--config=/dev/null \
--term=xterm \
sh -c "${source_dir}/scripts/generate-alt-random-writes.py ${script_options} ${tmp_file} && cat ${tmp_file}"
;;
full-headless-sway)
./footclient --version
sway_conf=$(mktemp)
echo "exec ${build_dir}/foot -o tweak.render-timer=log --config=/dev/null --term=xterm sh -c \"${source_dir}/scripts/generate-alt-random-writes.py ${script_options} ${tmp_file} && cat ${tmp_file}\" && swaymsg exit" > "${sway_conf}"
export WLR_BACKENDS=headless
sway -c "${sway_conf}"
rm "${sway_conf}"
;;
partial)
./footclient --version
./foot --version
"${source_dir}/scripts/generate-alt-random-writes.py" \
--rows=67 \
--cols=135 \
${script_options} \
"${tmp_file}"
./pgo "${tmp_file}"
;;
esac
cd "${pwd}"
rm "${tmp_file}"
if [ ${compiler} = clang ]; then
llvm-profdata merge "${build_dir}"/default_*.profraw --output="${build_dir}/default.profdata"
fi
meson configure "${build_dir}" -Db_pgo=use
fi