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#!/bin/bash
set -x
# This script is a helper to bisect GCC regressions.
# Inputs (as env. variables):
# EXP: name of .exp file to run
# TESTNAME: name of test to run
# GOOD (svn) or GOODGIT (git)
# BAD (svn) or (BADGIT) (git)
# TARGET
# CPU
# FPU
# MODE
# SIMU
# TARGETBOARD: additional test flags
# Sample usage:
# EXP=advsimd-intrinsics.exp TESTNAME=vduph_lane.c TARGET=aarch64-linux-gnu GOOD=242941 BAD=242954 ./abe-bisect.sh
# Check if the variable NAME is set
check_set()
{
name=$1
local val
eval val=\$${name}
[ x$val = x ] && echo $1 not set && exit 1
}
check_set EXP
check_set TESTNAME
check_set GOODGIT
check_set BADGIT
check_set TARGET
#check_set CPU
#check_set FPU
#check_set MODE
#check_set SIMU
#check_set TARGETBOARD
rundir=`pwd -P`
mydir="$(dirname $0)"
cd "${mydir}" || exit
mydir="$(pwd)"
cd ${rundir} || exit
MAILBODY=${rundir}/mail-body.txt
rm -f $MAILBODY
echo "Please check console output at ${BUILD_URL} to view the results." > $MAILBODY
rm -rf abe
git clone http://git.linaro.org/toolchain/abe.git
ABE=${rundir}/abe
${ABE}/configure --with-git-reference-dir=/home/tcwg-buildslave/snapshots-ref
# Checkout GCC master
${ABE}/abe.sh --target $TARGET --retrieve all
rm -rf gcc-bisect-dir
git-new-workdir ./snapshots/gcc.git gcc-bisect-dir
cd gcc-bisect-dir || exit
git bisect reset
git reset --hard
git pull
git bisect start --no-checkout
# GIT revisions take precedence over SVN ones (normally one should
# provide either SVN revs or GIT revs, not both
[ "x$GOOD" != "x" ] && GOODSHA1=`git log --format=format:"%H" --grep=trunk@${GOOD} master`
[ "x$BAD" != "x" ] && BADSHA1=`git log --format=format:"%H" --grep=trunk@${BAD} master`
[ "x$GOODGIT" != "x" ] && GOODSHA1=`git log --format=format:"%H" -n1 ${GOODGIT}`
[ "x$BADGIT" != "x" ] && BADSHA1=`git log --format=format:"%H" -n1 ${BADGIT}`
echo GOOD: $GOODSHA1
echo BAD: $BADSHA1
[ x"$GOODSHA1" = x ] && (echo "ERROR: Could not find good commit ($GOOD)" | tee -a $MAILBODY) && exit 1
[ x"$BADSHA1" = x ] && (echo "ERROR: Could not find bad commit ($BAD)" | tee -a $MAILBODY) && exit 1
# Build list of gcc configure options depending on cpu/fpu/mode
GCC_OVERRIDE_CONFIGURE=
if [ x"${CPU}" != x ]; then
GCC_OVERRIDE_CONFIGURE="${GCC_OVERRIDE_CONFIGURE} --set gcc_override_configure=--with-cpu=${CPU}"
fi
if [ x"${FPU}" != x ]; then
GCC_OVERRIDE_CONFIGURE="${GCC_OVERRIDE_CONFIGURE} --set gcc_override_configure=--with-fpu=${FPU}"
fi
if [ x"${MODE}" != x ]; then
GCC_OVERRIDE_CONFIGURE="${GCC_OVERRIDE_CONFIGURE} --set gcc_override_configure=--with-mode=${MODE}"
fi
# Sanity checks on the number of passes/fails in GOOD and BAD
pushd ${rundir} || exit
${ABE}/abe.sh --target ${TARGET} \
gcc=gcc.git@${GOODSHA1} \
--set runtestflags="${EXP}=${TESTNAME}" \
${GCC_OVERRIDE_CONFIGURE} \
--build all \
--check gcc \
--excludecheck gdb >& gcc-${GOODSHA1}.log
if [ $? -ne 0 ]; then
echo "ERROR: failure while building/testing GOOD ($GOOD}" | tee -a $MAILBODY
exit 1
fi
sums=`find builds/*/${TARGET}/*gcc.git~master_rev_${GOODSHA1}-stage2/ -name "*.sum"`
good_nb_fail=$(cat $sums | grep -wc FAIL)
good_nb_pass=$(cat $sums | grep -wc PASS)
${ABE}/abe.sh --target ${TARGET} \
gcc=gcc.git@${BADSHA1} \
--set runtestflags="${EXP}=${TESTNAME}" \
${GCC_OVERRIDE_CONFIGURE} \
--build all \
--check gcc \
--excludecheck gdb >& gcc-${BADSHA1}.log
if [ $? -ne 0 ]; then
echo "ERROR: failure while building/testing BAD ($BAD}" | tee -a $MAILBODY
exit 1
fi
sums=`find builds/*/${TARGET}/*gcc.git~master_rev_${BADSHA1}-stage2/ -name "*.sum"`
bad_nb_fail=$(cat $sums | grep -wc FAIL)
bad_nb_pass=$(cat $sums | grep -wc PASS)
# make sure BAD has more failures than GOOD
if [ $bad_nb_fail -le $good_nb_fail ]; then
echo "ERROR: BAD ($BAD) does not have more failures ($bad_nb_fail) than GOOD ($GOOD) ($good_nb_fail)" | tee -a $MAILBODY
exit 1
fi
popd || exit
git bisect good ${GOODSHA1}
git bisect bad ${BADSHA1}
RUNDIR=${rundir} ABE=${ABE} EXP=${EXP} TESTNAME=${TESTNAME} TARGET=${TARGET} CPU=${CPU} FPU=${FPU} MODE=${MODE} SIMU=${SIMU} TARGETBOARD=${TARGETBOARD} GOODPASS=${good_nb_pass} GOODFAIL=${good_nb_fail} BADPASS=${bad_nb_pass} BADFAIL=${bad_nb_fail} git bisect run ${mydir}/abe-bisect-helper.sh | tee bisect.log
git bisect visualize | tee -a $MAILBODY
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