1 # Copyright (C) 2001, 2004 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 2 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program; if not, write to the Free Software
15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 # This script was submitted by Janis Johnson <janis187@us.ibm.com>.
19 # Test the functionality and optionally, performance improvement, of
20 # programs compiled with profile-directed optimizations. Compile and
21 # run a test with profile options, compile it with options using the
22 # profile feedback, and then run the test again. Optionally compile
23 # and run a third time without the profile-directed optimization and
24 # compare timing results of the program with normal optimization and
25 # with the profile-directed optimization. Each test is run using
26 # multiple sets of optimization and/or code generation options in
27 # addition to the profiling and feedback options.
29 # If perf_ext is defined and the performance value for the
30 # profile-directed test run is nonzero then the performance check will
33 global PROFOPT_OPTIONS perf_delta
35 # The including .exp file must define these.
36 global tool profile_option feedback_option prof_ext
37 if ![info exists tool] {
38 error "Tools is not specified."
40 if ![info exists prof_ext] {
41 error "No profile data file extension specified."
44 # The maximum perforance degradation can be defined in the including file.
45 if ![info exists perf_delta] {
49 # The default option list can be overridden by
50 # PROFOPT_OPTIONS="{ { list1 } ... { list2 } }"
52 if ![info exists PROFOPT_OPTIONS] {
53 set PROFOPT_OPTIONS [list \
63 set prof_option_list $PROFOPT_OPTIONS
66 # profopt-cleanup -- remove profiling or performance results files.
68 # TESTCASE is the name of the test
69 # EXT is the extension of file to remove
71 proc profopt-cleanup { testcase ext } {
72 set basename [file tail $testcase]
73 set base [file rootname $basename]
74 set files [glob -nocomplain $base.$ext]
76 eval "remote_file build delete $files"
81 # profopt-perf-value -- get performance value for a test
83 # TESTCASE is the name of the test
84 # PERF_EXT is the extension of the performance result file
85 # OPTSTR is the string of compiler options
87 proc profopt-perf-value { testcase perf_ext optstr } {
88 set basename [file tail $testcase]
89 set base [file rootname $basename]
90 set files [glob -nocomplain $base.$perf_ext]
91 # The file doesn't exist; let the caller decide if that's a problem.
95 remote_upload host $base.$perf_ext $base.$perf_ext
96 set fd [open $base.$perf_ext r]
99 if [regexp "TIME" $line] {
100 if [regexp "TIME -1" $line] {
101 fail "$testcase perf check: no consistent time available, $optstr"
103 } elseif ![regexp "(\[0-9\]+)" "$line" val] {
107 # Report problems with an existing file.
109 fail "$testcase perf check: file $base.$perf_ext has wrong format, $optstr"
112 profopt-cleanup $testcase $perf_ext
117 # c-prof-execute -- compile for profiling and then feedback, then normal
119 # SRC is the full pathname of the testcase.
121 proc profopt-execute { src } {
123 global prof_option_list
124 global tool profile_option feedback_option prof_ext perf_ext perf_delta
127 if ![info exists profile_option] {
128 error "No profile option specified for first compile."
130 if ![info exists feedback_option] {
131 error "No feedback option specified for second compile."
134 regsub "^$srcdir/?" $src "" testcase
135 # If we couldn't rip $srcdir out of `src' then just do the best we can.
136 # The point is to reduce the unnecessary noise in the logs. Don't strip
137 # out too much because different testcases with the same name can confuse
139 if [string match "/*" $testcase] {
140 set testcase "[file tail [file dirname $src]]/[file tail $src]"
143 set executable $tmpdir/[file tail [file rootname $src].x]
146 foreach option $prof_option_list {
147 set execname1 "${executable}${count}1"
148 set execname2 "${executable}${count}2"
149 set execname3 "${executable}${count}3"
152 remote_file build delete $execname1
153 remote_file build delete $execname2
154 remote_file build delete $execname3
155 verbose "Testing $testcase, $option" 1
157 # Remove old profiling and performance data files.
158 profopt-cleanup $testcase $prof_ext
159 if [info exists perf_ext] {
160 profopt-cleanup $testcase $perf_ext
163 # Compile for profiling.
166 lappend options "additional_flags=$option $profile_option"
167 set optstr "$option $profile_option"
168 set comp_output [${tool}_target_compile "$src" "$execname1" executable $options];
169 if ![${tool}_check_compile "$testcase compilation" $optstr $execname1 $comp_output] {
170 unresolved "$testcase execution, $optstr"
171 unresolved "$testcase compilation, $option $feedback_option"
172 unresolved "$testcase execution, $option $feedback_option"
176 # Run the profiled test.
178 set result [${tool}_load $execname1 "" ""]
179 set status [lindex $result 0]
180 # Make sure the profile data was generated, and fail if not.
181 if { $status == "pass" } {
182 set basename [file tail $testcase]
183 set base [file rootname $basename]
184 set files [glob -nocomplain $base.$prof_ext]
185 if { $files == "" } {
187 fail "$testcase execution: file $base.$prof_ext does not exist, $option $profile_option"
189 $status "$testcase execution, $optstr"
192 $status "$testcase execution, $optstr"
194 # Quit for this round if it failed
195 if { $status != "pass" } {
196 unresolved "$testcase compilation, $option $feedback_option"
197 unresolved "$testcase execution, $option $feedback_option"
200 remote_file build delete $execname1
202 # Compile with feedback-directed optimizations.
205 lappend options "additional_flags=$option $feedback_option"
206 set optstr "$option $feedback_option"
207 set comp_output [${tool}_target_compile "$src" "$execname2" "executable" $options];
208 if ![${tool}_check_compile "$testcase compilation" $optstr $execname2 $comp_output] {
209 unresolved "$testcase execution, $optstr"
213 # Run the profile-directed optimized test.
215 set result [${tool}_load "$execname2" "" ""]
216 set status [lindex $result 0]
217 $status "$testcase execution, $optstr"
218 if { $status != "pass" } {
222 # Remove the profiling data files.
223 profopt-cleanup $testcase $prof_ext
225 # If the test is not expected to produce performance data then
227 if ![info exists perf_ext] {
228 remote_file build delete $execname2
232 # Get the performance data from the test built with
233 # profile-directed optimization. If the file doesn't exist or if
234 # the value is zero, skip the performance comparison.
235 set val2 [profopt-perf-value $testcase $perf_ext $optstr]
237 remote_file build delete $execname2
241 # Compile with normal optimizations.
244 lappend options "additional_flags=$option"
246 set comp_output [${tool}_target_compile "$src" "$execname3" "executable" $options];
247 if ![${tool}_check_compile "$testcase compilation" $optstr $execname3 $comp_output] {
248 unresolved "$testcase execution, $optstr"
249 unresolved "$testcase perf check, $optstr"
253 # Run the test with normal optimizations.
255 set result [${tool}_load "$execname3" "" ""]
256 set status [lindex $result 0]
257 $status "$testcase execution, $optstr"
258 if { $status != "pass" } {
259 unresolved "$testcase perf check, $optstr"
263 # Get the performance data from the test built with normal
265 set val1 [profopt-perf-value $testcase $perf_ext $optstr]
268 # The data file existed with the profile-directed
269 # optimization so this one should, too.
270 fail "$testcase perf check: file $base.$perf_ext does not exist, $optstr"
275 # Compare results of the two runs and fail if the time with the
276 # profile-directed optimization is significantly more than the time
279 if { $val2 > $val1 } {
280 # Check for a performance degration outside of allowable limits.
281 if { [expr $val2 - $val1] > [expr [expr $val1 * $perf_delta] / 100] } {
285 if { $status == "fail" } {
286 fail "$testcase perf check: orig: $val1 new: $val2, $optstr"
288 $status "$testcase perf check, $optstr"
289 verbose "$testcase orig: $val1 new: $val2, $optstr" 2
290 remote_file build delete $execname2
291 remote_file build delete $execname3