1#!/bin/bash 2# 3# Script that checks that critical functions in TSan runtime have correct number 4# of push/pop/rsp instructions to verify that runtime is efficient enough. 5# 6# This test can fail when backend code generation changes the output for various 7# tsan interceptors. When such a change happens, you can ensure that the 8# performance has not regressed by running the following benchmarks before and 9# after the breaking change to verify that the values in this file are safe to 10# update: 11# ./projects/compiler-rt/lib/tsan/tests/rtl/TsanRtlTest-x86_64-Test 12# --gtest_also_run_disabled_tests --gtest_filter=DISABLED_BENCH.Mop* 13 14set -u 15 16if [[ "$#" != 1 ]]; then 17 echo "Usage: $0 /path/to/binary/built/with/tsan" 18 exit 1 19fi 20 21SCRIPTDIR=$(dirname $0) 22RES=$(${SCRIPTDIR}/analyze_libtsan.sh $1) 23PrintRes() { 24 printf "%s\n" "$RES" 25} 26 27PrintRes 28 29check() { 30 res=$(PrintRes | egrep "$1 .* $2 $3; ") 31 if [ "$res" == "" ]; then 32 echo FAILED $1 must contain $2 $3 33 exit 1 34 fi 35} 36 37for f in write1 write2 write4 write8 read2 read4; do 38 check $f rsp 1 39 check $f push 1 40 check $f pop 6 41done 42 43for f in read1 read8; do 44 check $f rsp 1 45 check $f push 2 46 check $f pop 12 47done 48 49for f in func_entry func_exit; do 50 check $f rsp 0 51 check $f push 0 52 check $f pop 0 53 check $f call 1 # TraceSwitch() 54done 55 56echo LGTM 57