From 3e1864aa14a33a3c917537a241f6a032cfcacf78 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 14 Oct 2017 01:01:14 +0200 Subject: General improvements MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- benchmark-flags | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100755 benchmark-flags (limited to 'benchmark-flags') diff --git a/benchmark-flags b/benchmark-flags new file mode 100755 index 0000000..1168ec0 --- /dev/null +++ b/benchmark-flags @@ -0,0 +1,116 @@ +#!/bin/sh +# See LICENSE file for copyright and license details. + +set -e + +export LD_LIBRARY_PATH=bin +if test "${TRIES}" = ""; then + TRIES=10 +fi + +# List all flags that affect the object files +list_test_flags() { + cat <.benchmark.so.far + +while true; do + exec 3>.benchmarks + + for _try in $(seq ${TRIES}); do + for test_flag in "" ${test_flags}; do + flags="${test_flag} ${base_flags}" + make -B all COPTIMISE="${flags}" CPPFLAGS="${cppflags} $*" + make check + if test "${test_flag}" = ""; then + test_flag=zzz + fi + echo "$(bin/benchmark || echo error) ${test_flag}" >&3 + done + done + + exec 3<&- + + ! grep ^error .benchmarks >/dev/null 2>/dev/null + + good_flag="$(median < .benchmarks | sort -n | cut -d ' ' -f 2 | sed 1q)" + if test "${good_flag}" = zzz || test $pass = 2; then + if test $pass = 1; then + pass=2 + base_flags="$(echo "${base_flags}" | sed -e 's/ -O0//')" + test_flags="-O0 -O1 -O2 -O3 -Ofast -Os" + else + if ! test "${good_flag}" = zzz; then + base_flags="${base_flags} ${good_flag}" + echo "${good_flag}" >&4 + fi + echo + echo + echo "Good flags:" + echo "${base_flags}" + exec 4<&- + exit 0 + fi + else + echo "${good_flag}" >&4 + base_flags="${base_flags} ${good_flag}" + test_flags="$(echo "${test_flags}" | sed -e "s/ ${good_flag} / /")" + fi +done + +# None of these GCC flags affect the object files. +# -faggressive-loop-optimizations -fauto-inc-dec -fbranch-target-load-optimize +# -fbranch-target-load-optimize2 -fbtr-bb-exclusive -fcaller-saves -fcheck-data-deps +# -fcombine-stack-adjustments -fconserve-stack -fcompare-elim -fcprop-registers +# -fcse-follow-jumps -fcse-skip-blocks -fcx-fortran-rules -fcx-limited-range -fdce +# -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fdse +# -fearly-inlining -fipa-sra -ffat-lto-objects -fbranch-probabilities +# -fassociative-math -fforward-propagate -ffunction-sections -fforward-propagate +# -ffast-math -ffinite-math-only -ffloat-store -fgcse -fgcse-after-reload -fgcse-las +# -fgcse-lm -fgraphite-identity -fgcse-sm -fhoist-adjacent-loads -fif-conversion +# -fif-conversion2 -findirect-inlining -finline-functions -finline-functions-called-once +# -finline-small-functions -fipa-cp -fipa-cp-clone -fipa-pta -fipa-profile +# -fipa-pure-const -fipa-reference -fira-hoist-pressure -fira-loop-pressure +# -fno-ira-share-save-slots -fno-ira-share-spill-slots -fisolate-erroneous-paths-dereference +# -fisolate-erroneous-paths-attribute -fivopts -fkeep-static-consts -flive-range-shrinkage +# -floop-block -floop-interchange -floop-strip-mine -floop-nest-optimize +# -floop-parallelize-all -fmodulo-sched -fmodulo-sched-allow-regmoves -fmove-loop-invariants +# -fno-branch-count-reg -fno-defer-pop -fno-function-cse -fno-guess-branch-probability +# -fno-defer-pop -fno-function-cse -fno-guess-branch-probability -fno-inline -fno-math-errno +# -fno-peephole -fno-peephole2 -fno-sched-interblock -fno-sched-spec -fno-signed-zeros +# -fno-toplevel-reorder -fno-trapping-math -fno-zero-initialized-in-bss +# -foptimize-sibling-calls -fpartial-inlining -fpeel-loops -fpredictive-commoning +# -fprefetch-loop-arrays -fprofile-report -fprofile-use -fprofile-values +# -fprofile-reorder-functions -freciprocal-math -free -frename-registers -freorder-blocks +# -frerun-cse-after-loop -freschedule-modulo-scheduled-loops -frounding-math +# -fsched2-use-superblocks -fsched-pressure -fsched-spec-load -fsched-spec-load-dangerous +# -fsched-group-heuristic -fsched-critical-path-heuristic -fsched-spec-insn-heuristic +# -fsched-rank-heuristic -fsched-last-insn-heuristic -fsched-dep-count-heuristic +# -fselective-scheduling -fselective-scheduling2 -fsel-sched-pipelining +# -fsel-sched-pipelining-outer-loops -fshrink-wrap -fsignaling-nans +# -fsingle-precision-constant -fstrict-overflow -fthread-jumps -ftracer -ftree-bit-ccp +# -ftree-builtin-call-dce -ftree-ccp -ftree-ch -ftree-copyrename -ftree-dce +# -ftree-dominator-opts -ftree-dse -ftree-forwprop -ftree-fre -ftree-loop-if-convert +# -ftree-loop-if-convert-stores -ftree-loop-im -ftree-phiprop -ftree-loop-distribution +# -ftree-loop-distribute-patterns -ftree-loop-ivcanon -ftree-loop-linear +# -ftree-loop-optimize -ftree-loop-vectorize -ftree-pre -ftree-partial-pre -ftree-pta +# -ftree-reassoc -ftree-sink -ftree-slsr -ftree-sra -ftree-vectorize -ftree-vrp +# -funit-at-a-time -funroll-all-loops -funroll-loops -funsafe-loop-optimizations +# -funsafe-math-optimizations -funswitch-loops -fvariable-expansion-in-unroller +# -fvect-cost-model -fvpt -fweb -fprofile-correction -freorder-functions +# -fschedule-insns -fschedule-insns2 -fsplit-ivs-in-unroller -fsplit-wide-types +# -fstrict-aliasing -ftree-coalesce-vars -ftree-copy-prop -ftree-switch-conversion +# -ftree-switch-conversion -ftree-tail-merge -ftree-coalesce-inlined-vars +# -falign-jumps=0 -falign-labels=0 -falign-loops=0 -ftree-parallelize-loops=10 +# -fsched-stalled-insns-dep=0 -fsched-stalled-insns=0 + -- cgit v1.2.3-70-g09d2