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RFC: parallelize "make check"


This patch adds parallelization for "make check", if you are using GNU
make.  If you are not using GNU make, nothing changes.

It mostly runs each testsuite subdirectory in parallel, but it also
splits gdb.base into two parts (because gdb.base took longer than any
other subdir).

On the compile farm, with -j6, the test suite time drops from about 15
minutes to about 5.  This was good enough for me, so I didn't try to
make it any faster.

After running the tests in parallel, it combines them using a script
from gcc's contrib directory.  I just copied this into gdb/testsuite/,
but that might not be best.

Finally, if you pass any arguments via RUNTESTFLAGS, by default
parallelization is disabled.  You can set FORCE_PARALLEL to work
around this -- but this also will force all the tests to be run, so it
can't meaningfully be used in conjunction with "--directory" or
something like that.

Let me know what you think.  Barring objection I will commit this next
week.

Tom

2009-06-24  Tom Tromey  <tromey@redhat.com>

	* dg-extract-results.sh: New file.
	* Makefile.in (FORCE_PARALLEL): New variable.
	(CHECK_TARGET): New conditional variable.
	(check): Use CHECK_TARGET.
	(DO_RUNTEST): New variable.
	(check-single): New target.
	(TEST_DIRS): New variable.
	(TEST_TARGETS): Likewise.
	(check-parallel): New target.
	(check-gdb.%): New pattern.
	(BASE1_FILES): New variable.
	(BASE2_FILES): Likewise.
	(check-gdb.base%): New pattern.
	(%/.dir): New pattern.
	* configure: Rebuild.
	* aclocal.m4 (AM_CONDITIONAL): New defun.
	* configure.ac: Check whether user is using GNU make.
	(GMAKE): New conditional.

diff --git a/gdb/testsuite/Makefile.in b/gdb/testsuite/Makefile.in
index 92f1a67..5344418 100644
--- a/gdb/testsuite/Makefile.in
+++ b/gdb/testsuite/Makefile.in
@@ -48,6 +48,8 @@ RUNTEST = $(RUNTEST_FOR_TARGET)
 
 RUNTESTFLAGS =
 
+FORCE_PARALLEL =
+
 RUNTEST_FOR_TARGET = `\
   if [ -f $${srcdir}/../../dejagnu/runtest ]; then \
     echo $${srcdir}/../../dejagnu/runtest; \
@@ -122,7 +124,18 @@ site.exp: ./config.status Makefile
 
 installcheck:
 
-check: all site.exp
+# For GNU make, try to run the tests in parallel.  If RUNTESTFLAGS is
+# not empty, then by default the tests will be serialized.  This can
+# be overridden by setting FORCE_PARALLEL to any non-empty value.
+# For a non-GNU make, do not parallelize.
+@GMAKE_TRUE@CHECK_TARGET = $(if $(FORCE_PARALLEL),check-parallel,$(if $(RUNTESTFLAGS),check-single,check-parallel))
+@GMAKE_FALSE@CHECK_TARGET = check-single
+
+check: $(CHECK_TARGET)
+
+# All the hair to invoke dejagnu.  A given invocation can just append
+# $(RUNTESTFLAGS)
+DO_RUNTEST = \
 	rootme=`pwd`; export rootme; \
 	srcdir=${srcdir} ; export srcdir ; \
 	EXPECT=${EXPECT} ; export EXPECT ; \
@@ -132,7 +145,46 @@ check: all site.exp
 	if [ -f $${rootme}/../../expect/expect ] ; then  \
 	  TCL_LIBRARY=$${srcdir}/../../tcl/library ; \
 	  export TCL_LIBRARY ; fi ; \
-	$(RUNTEST) $(RUNTESTFLAGS) 
+	$(RUNTEST)
+
+check-single: all site.exp
+	$(DO_RUNTEST) $(RUNTESTFLAGS)
+
+# A list of all directories named "gdb.*" which also hold a .exp file.
+# We filter out gdb.base and add fake entries, because that directory
+# takes the longest to process, and so we split it in half.
+TEST_DIRS = gdb.base1 gdb.base2 $(filter-out gdb.base,$(sort $(notdir $(patsubst %/,%,$(dir $(wildcard $(srcdir)/gdb.*/*.exp))))))
+
+TEST_TARGETS = $(addprefix check-,$(TEST_DIRS))
+
+# We explicitly re-invoke make here for two reasons.  First, it lets
+# us add a -k option, which makes the parallel check mimic the
+# behavior of the serial check; and second, it means that we can still
+# regenerate the sum and log files even if a sub-make fails -- which
+# it usually does because dejagnu exits with an error if any test
+# fails.
+check-parallel:
+	$(MAKE) -k $(TEST_TARGETS); \
+	$(SHELL) $(srcdir)/dg-extract-results.sh \
+	  $(addsuffix /gdb.sum,$(TEST_DIRS)) > gdb.sum; \
+	$(SHELL) $(srcdir)/dg-extract-results.sh -L \
+	  $(addsuffix /gdb.log,$(TEST_DIRS)) > gdb.log
+
+$(filter-out check-gdb.base%,$(TEST_TARGETS)): check-gdb.%: all site.exp gdb.%/.dir
+	$(DO_RUNTEST) --directory=gdb.$* --outdir=gdb.$* $(RUNTESTFLAGS)
+
+# Each half (roughly) of the .exp files from gdb.base.
+BASE1_FILES = $(patsubst $(srcdir)/%,%,$(wildcard $(srcdir)/gdb.base/[a-m]*.exp))
+BASE2_FILES = $(patsubst $(srcdir)/%,%,$(wildcard $(srcdir)/gdb.base/[n-z]*.exp))
+
+# Handle each half of gdb.base.
+check-gdb.base%: all site.exp gdb.base%/.dir
+	@if test ! -d gdb.base$*; then mkdir gdb.base$*; fi
+	$(DO_RUNTEST) $(BASE$*_FILES) --outdir gdb.base$* $(RUNTESTFLAGS)
+
+%/.dir:
+	@-if test ! -d $*; then mkdir $*; fi
+	@echo > $@
 
 subdir_do: force
 	@for i in $(DODIRS); do \
diff --git a/gdb/testsuite/aclocal.m4 b/gdb/testsuite/aclocal.m4
index f58abae..2934db2 100644
--- a/gdb/testsuite/aclocal.m4
+++ b/gdb/testsuite/aclocal.m4
@@ -1,2 +1,35 @@
 sinclude(../../config/acx.m4)
 sinclude(../../config/override.m4)
+
+# AM_CONDITIONAL                                            -*- Autoconf -*-
+
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 7
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ(2.52)dnl
+ ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
+	[$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
+AC_SUBST([$1_TRUE])
+AC_SUBST([$1_FALSE])
+if $2; then
+  $1_TRUE=
+  $1_FALSE='#'
+else
+  $1_TRUE='#'
+  $1_FALSE=
+fi
+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+  AC_MSG_ERROR([[conditional "$1" was never defined.
+Usually this means the macro was only invoked conditionally.]])
+fi])])
diff --git a/gdb/testsuite/configure.ac b/gdb/testsuite/configure.ac
index 3d8fae4..1a0f590 100644
--- a/gdb/testsuite/configure.ac
+++ b/gdb/testsuite/configure.ac
@@ -1,7 +1,7 @@
 #                                                       -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-# Copyright 2002, 2003, 2004, 2005
+# Copyright 2002, 2003, 2004, 2005, 2009
 # Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -26,6 +26,17 @@ AC_CANONICAL_TARGET
 
 ACX_NONCANONICAL_TARGET
 
+# Check for the 'make' the user wants to use.
+AC_CHECK_PROGS(MAKE, make)
+MAKE_IS_GNU=
+case "`$MAKE --version 2>&1 | sed 1q`" in
+  *GNU*)
+    MAKE_IS_GNU=yes
+    ;;
+esac
+AM_CONDITIONAL(GMAKE, test "$MAKE_IS_GNU" = yes)
+AC_PROG_MAKE_SET
+
 # Add HP-specific tests when appropriate.
 case $target in
   hppa*-*-hpux*)
diff --git a/gdb/testsuite/dg-extract-results.sh b/gdb/testsuite/dg-extract-results.sh
new file mode 100755
index 0000000..518c19f
--- /dev/null
+++ b/gdb/testsuite/dg-extract-results.sh
@@ -0,0 +1,423 @@
+#! /bin/sh
+
+# For a specified tool and optional list of test variants, extract
+# test results from one or more test summary (.sum) files and combine
+# the results into a new test summary file, sent to the standard output.
+# The resulting file can be used with test result comparison scripts for
+# results from tests that were run in parallel.  See usage() below.
+
+# Copyright (C) 2008, 2009 Free Software Foundation
+# Contributed by Janis Johnson <janis187@us.ibm.com>
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING.  If not, write to
+# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+
+PROGNAME=dg-extract-results.sh
+
+usage() {
+  cat <<EOF >&2
+Usage: $PROGNAME [-t tool] [-l variant-list] [-L] sum-file ...
+
+    tool           The tool (e.g. g++, libffi) for which to create a
+                   new test summary file.  If not specified then all
+                   specified sum files must be for the same tool.
+    variant-list   One or more test variant names.  If the list is
+                   not specified then one is constructed from all
+                   variants in the files for <tool>.
+    sum-file       A test summary file with the format of those
+                   created by runtest from DejaGnu.
+    If -L is used, merge *.log files instead of *.sum.  In this
+    mode the exact order of lines may not be preserved, just different
+    Running *.exp chunks should be in correct order.
+EOF
+}
+
+# Write a message to the standard error.
+
+msg() {
+  echo "$@" >&2
+}
+
+# Parse the command-line options.
+
+VARIANTS=""
+TOOL=""
+MODE="sum"
+
+while getopts "l:t:L" ARG; do
+  case $ARG in
+  l)  VARIANTS="${VARIANTS} ${OPTARG}";;
+  t)  test -z "$TOOL" || (msg "${PROGNAME}: only one tool can be specified"; exit 1);
+      TOOL="${OPTARG}";;
+  L)  MODE="log";;
+  \?) usage; exit 0;;
+  esac
+done
+shift `expr ${OPTIND} - 1`
+
+if test $# -lt 1 ; then
+  usage
+  exit 1
+fi
+
+TMPDIR=${TMPDIR-/tmp}
+SUM_FILES="$@"
+FIRST_SUM=$1
+TMP=
+trap 'EXIT_STATUS=$?; rm -rf $TMP && exit $EXIT_STATUS' 0
+# Create a (secure) tmp directory for tmp files.
+{
+  TMP=`(umask 077 && mktemp -d -q "${TMPDIR}/dg-combine-results-$$-XXXXXX") 2>/dev/null` &&
+  test -n "$TMP" && test -d "$TMP"
+} ||
+{
+  TMP=${TMPDIR}/dg-combine-results-$$-$RANDOM
+  (umask 077 && mkdir $TMP)
+} ||
+{
+  msg "${PROGNAME}: cannot create a temporary directory"
+  { (exit 1); exit 1; }
+}
+
+# Find a good awk.
+
+if test -z "$AWK" ; then
+  for AWK in gawk nawk awk
+  do
+    if type $AWK 2>&1 | grep 'not found' > /dev/null 2>&1 ; then
+      :
+    else
+      break
+    fi
+  done
+fi
+
+# Verify that the specified summary files exist.
+
+ERROR=0
+for FILE in $SUM_FILES
+do
+  if ! test -f $FILE ; then
+    msg "${PROGNAME}: file $FILE does not exist."
+    ERROR=1
+  fi
+done
+test $ERROR -eq 0 || exit 1
+
+if [ -z "$TOOL" ]; then
+  # If no tool was specified, all specified summary files must be for
+  # the same tool.
+
+  CNT=`grep '=== .* tests ===' $SUM_FILES | $AWK '{ print $3 }' | sort -u | wc -l`
+  if [ $CNT -eq 1 ]; then
+    TOOL=`grep '=== .* tests ===' $FIRST_SUM | $AWK '{ print $2 }'`
+  else
+    msg "${PROGNAME}: sum files are for multiple tools, specify a tool"
+    msg ""
+    usage
+    exit 1
+  fi
+else
+  # Ignore the specified summary files that are not for this tool.  This
+  # should keep the relevant files in the same order.
+
+  SUM_FILES=`grep -l "=== $TOOL" $SUM_FILES`
+  if test -z "$SUM_FILES" ; then
+    msg "${PROGNAME}: none of the specified files are results for $TOOL"
+    exit 1
+  fi
+fi
+
+if [ "$TOOL" = acats ]; then
+  # Acats *.sum or *.log files aren't dejagnu generated, and they have
+  # somewhat different format.
+  ACATS_AWK=${TMP}/acats.awk
+  cat <<EOF > $ACATS_AWK
+BEGIN {
+  print_prologue=1; curfile=""; insummary=0
+  passcnt=0; failcnt=0; unsupcnt=0; failures=""
+}
+/^[ \t]*=== acats configuration ===/ {
+  insummary=0
+  if (print_prologue) print
+  next
+}
+/^[ \t]*=== acats tests ===/ {
+  if (print_prologue) print
+  print_prologue=0
+  next
+}
+/^Running chapter / {
+  if (curfile) close (curfile)
+  curfile="${TMP}/chapter-"\$3
+  print >> curfile
+  next
+}
+/^[ \t]*=== acats Summary ===/ {
+  if (curfile) close (curfile)
+  curfile=""
+  insummary=1
+  next
+}
+/^# of expected passes/		{ if (insummary == 1) passcnt += \$5; next; }
+/^# of unexpected failures/	{ if (insummary == 1) failcnt += \$5; next; }
+/^# of unsupported tests/	{ if (insummary == 1) unsupcnt += \$5; next; }
+/^\*\*\* FAILURES: / {
+  if (insummary == 1) {
+    if (failures) sub(/^\*\*\* FAILURES:/,"")
+    failures=failures""\$0
+  }
+}
+{
+  if (print_prologue) { print; next }
+  if (curfile) print >> curfile
+}
+END {
+  system ("cat ${TMP}/chapter-*")
+  print "		=== acats Summary ==="
+  print "# of expected passes		" passcnt
+  print "# of unexpected failures	" failcnt
+  if (unsupcnt) print "# of unsupported tests		" unsupcnt
+  if (failures) print failures
+}
+EOF
+
+  rm -f ${TMP}/chapter-*
+  $AWK -f $ACATS_AWK $SUM_FILES
+  exit 0
+fi
+
+# If no variants were specified, find all variants in the remaining
+# summary files.  Otherwise, ignore specified variants that aren't in
+# any of those summary files.
+
+if test -z "$VARIANTS" ; then
+  VAR_AWK=${TMP}/variants.awk
+  cat <<EOF > $VAR_AWK
+/^Schedule of variations:/      { in_vars=1; next }
+/^$/                            { in_vars=0 }
+/^Running target/               { exit }
+{ if (in_vars==1) print \$1; else next }
+EOF
+
+  touch ${TMP}/varlist
+  for FILE in $SUM_FILES; do
+    $AWK -f $VAR_AWK $FILE >> ${TMP}/varlist
+  done
+  VARIANTS="`sort -u ${TMP}/varlist`"
+else
+  VARS="$VARIANTS"
+  VARIANTS=""
+  for VAR in $VARS
+  do
+    grep -q "Running target $VAR" $SUM_FILES && VARIANTS="$VARIANTS $VAR"
+  done
+fi
+
+# Find out if we have more than one variant, or any at all.
+
+VARIANT_COUNT=0
+for VAR in $VARIANTS
+do
+  VARIANT_COUNT=`expr $VARIANT_COUNT + 1`
+done
+
+if test $VARIANT_COUNT -eq 0 ; then
+  msg "${PROGNAME}: no file for $TOOL has results for the specified variants"
+  exit 1
+fi
+
+cat $SUM_FILES \
+  | $AWK '/^Running/ { if ($2 != "target" && $3 == "...") print "EXPFILE: "$2 } ' \
+  | sort -u > ${TMP}/expfiles
+
+# Write the begining of the combined summary file.
+
+head -n 2 $FIRST_SUM
+echo
+echo "		=== $TOOL tests ==="
+echo
+echo "Schedule of variations:"
+for VAR in $VARIANTS
+do
+  echo "    $VAR"
+done
+echo
+
+# For each test variant for the tool, copy test reports from each of the
+# summary files.  Set up two awk scripts from within the loop to
+# initialize VAR and TOOL with the script, rather than assuming that the
+# available version of awk can pass variables from the command line.
+
+for VAR in $VARIANTS
+do
+  GUTS_AWK=${TMP}/guts.awk
+  cat << EOF > $GUTS_AWK
+BEGIN {
+  variant="$VAR"
+  firstvar=1
+  expfileno=1
+  cnt=0
+  print_using=0
+  need_close=0
+}
+/^EXPFILE: / {
+  expfiles[expfileno] = \$2
+  expfilesr[\$2] = expfileno
+  expfileno = expfileno + 1
+}
+/^Running target / {
+  curvar = \$3
+  if (variant == curvar && firstvar == 1) { print; print_using=1; firstvar = 0 }
+  next
+}
+/^Using / {
+  if (variant == curvar && print_using) { print; next }
+}
+/^Running / {
+  print_using=0
+  if (variant == curvar) {
+    if (need_close) close(curfile)
+    curfile="${TMP}/list"expfilesr[\$2]
+    expfileseen[\$2]=expfileseen[\$2] + 1
+    need_close=0
+    testname="00"
+    next
+  }
+}
+/\===/ { curvar = ""; next }
+/^(PASS|XPASS|FAIL|XFAIL|UNRESOLVED|WARNING|ERROR|UNSUPPORTED|UNTESTED|KFAIL):/ {
+  testname=\$2
+  # Ugly hack for gfortran.dg/dg.exp
+  if ("$TOOL" == "gfortran" && testname ~ /^gfortran.dg\/g77\//)
+    testname="h"testname
+}
+/^$/ { if ("$MODE" == "sum") next }
+{ if (variant == curvar && curfile) {
+    if ("$MODE" == "sum") {
+      printf "%s %08d|", testname, cnt >> curfile
+      cnt = cnt + 1
+    }
+    filewritten[curfile]=1
+    need_close=1
+    print >> curfile
+  } else
+    next
+}
+END {
+  n=1
+  while (n < expfileno) {
+    if (expfileseen[expfiles[n]]) {
+      print "Running "expfiles[n]" ..."
+      if (filewritten["${TMP}/list"n]) {
+	if (expfileseen[expfiles[n]] == 1)
+	  cmd="cat"
+	else
+	  cmd="LC_ALL=C sort"
+	if ("$MODE" == "sum")
+	  system (cmd" ${TMP}/list"n" | sed -n 's/^[^ ]* [^ |]*|//p'")
+	else
+	  system ("cat ${TMP}/list"n)
+      }
+    }
+    n = n + 1
+  }
+}
+EOF
+
+  SUMS_AWK=${TMP}/sums.awk
+  rm -f $SUMS_AWK
+  cat << EOF > $SUMS_AWK
+BEGIN {
+  variant="$VAR"
+  tool="$TOOL"
+  passcnt=0; failcnt=0; untstcnt=0; xpasscnt=0; xfailcnt=0; unsupcnt=0; unrescnt=0;
+  curvar=""; insummary=0
+}
+/^Running target /		{ curvar = \$3; next }
+/^# of /			{ if (variant == curvar) insummary = 1 }
+/^# of expected passes/		{ if (insummary == 1) passcnt += \$5; next; }
+/^# of unexpected successes/	{ if (insummary == 1) xpasscnt += \$5; next; }
+/^# of unexpected failures/	{ if (insummary == 1) failcnt += \$5; next; }
+/^# of expected failures/	{ if (insummary == 1) xfailcnt += \$5; next; }
+/^# of untested testcases/	{ if (insummary == 1) untstcnt += \$5; next; }
+/^# of unresolved testcases/	{ if (insummary == 1) unrescnt += \$5; next; }
+/^# of unsupported tests/	{ if (insummary == 1) unsupcnt += \$5; next; }
+/^$/				{ if (insummary == 1)
+				    { insummary = 0; curvar = "" }
+				  next
+				}
+{ next }
+END {
+  printf ("\t\t=== %s Summary for %s ===\n\n", tool, variant)
+  if (passcnt != 0) printf ("# of expected passes\t\t%d\n", passcnt)
+  if (xpasscnt != 0) printf ("# of unexpected successes\t%d\n", xpasscnt)
+  if (failcnt != 0) printf ("# of unexpected failures\t%d\n", failcnt)
+  if (xfailcnt != 0) printf ("# of expected failures\t\t%d\n", xfailcnt)
+  if (untstcnt != 0) printf ("# of untested testcases\t\t%d\n", untstcnt)
+  if (unrescnt != 0) printf ("# of unresolved testcases\t%d\n", unrescnt)
+  if (unsupcnt != 0) printf ("# of unsupported tests\t\t%d\n", unsupcnt)
+}
+EOF
+
+  PVAR=`echo $VAR | sed 's,/,.,g'`
+  TMPFILE=${TMP}/var-$PVAR
+  rm -f $TMPFILE
+  rm -f ${TMP}/list*
+  cat ${TMP}/expfiles $SUM_FILES | $AWK -f $GUTS_AWK
+  cat $SUM_FILES | $AWK -f $SUMS_AWK > $TMPFILE
+  # If there are multiple variants, output the counts for this one;
+  # otherwise there will just be the final counts at the end.
+  test $VARIANT_COUNT -eq 1 || cat $TMPFILE
+done
+
+# Set up an awk script to get the combined summary counts for the tool.
+
+TOTAL_AWK=${TMP}/total.awk
+cat << EOF > $TOTAL_AWK
+BEGIN {
+  tool="$TOOL"
+  passcnt=0; failcnt=0; untstcnt=0; xpasscnt=0; xfailcnt=0; unsupcnt=0; unrescnt=0
+}
+/^# of expected passes/		{ passcnt += \$5 }
+/^# of unexpected failures/	{ failcnt += \$5 }
+/^# of unexpected successes/	{ xpasscnt += \$5 }
+/^# of expected failures/	{ xfailcnt += \$5 }
+/^# of untested testcases/	{ untstcnt += \$5 }
+/^# of unresolved testcases/	{ unrescnt += \$5 }
+/^# of unsupported tests/	{ unsupcnt += \$5 }
+END {
+  printf ("\n\t\t=== %s Summary ===\n\n", tool)
+  if (passcnt != 0) printf ("# of expected passes\t\t%d\n", passcnt)
+  if (failcnt != 0) printf ("# of unexpected failures\t%d\n", failcnt)
+  if (xpasscnt != 0) printf ("# of unexpected successes\t%d\n", xpasscnt)
+  if (xfailcnt != 0) printf ("# of expected failures\t\t%d\n", xfailcnt)
+  if (untstcnt != 0) printf ("# of untested testcases\t\t%d\n", untstcnt)
+  if (unrescnt != 0) printf ("# of unresolved testcases\t%d\n", unrescnt)
+  if (unsupcnt != 0) printf ("# of unsupported tests\t\t%d\n", unsupcnt)
+}
+EOF
+
+# Find the total summaries for the tool and add to the end of the output.
+cat ${TMP}/var-* | $AWK -f $TOTAL_AWK
+
+# This is ugly, but if there's version output from the compiler under test
+# at the end of the file, we want it.  The other thing that might be there
+# is the final summary counts.
+tail -n 2 $FIRST_SUM | grep -q '^#' || tail -n 2 $FIRST_SUM
+
+exit 0


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