1 # Copyright (C) 2001 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 non-zero 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 profile_option] {
41 error "No profile option specified for first compile."
43 if ![info exists feedback_option] {
44 error "No feedback option specified for second compile."
46 if ![info exists prof_ext] {
47 error "No profile data file extension specified."
50 # The maximum perforance degradation can be defined in the including file.
51 if ![info exists perf_delta] {
55 # The default option list can be overridden by
56 # PROFOPT_OPTIONS="{ { list1 } ... { list2 } }"
58 if ![info exists PROFOPT_OPTIONS] {
59 set PROFOPT_OPTIONS [list \
69 set option_list $PROFOPT_OPTIONS
72 # profopt-cleanup -- remove profiling or performance results files.
74 # EXT is the extension of files to remove
76 proc profopt-cleanup { ext } {
77 set files [glob -nocomplain *.$ext]
79 eval "remote_file build delete $files"
84 # profopt-perf-value -- get performance value for a test
86 # TESTCASE is the name of the test
87 # PERF_EXT is the extension of the performance result file
88 # OPTSTR is the string of compiler options
90 proc profopt-perf-value { testcase perf_ext optstr } {
91 set basename [file tail $testcase]
92 set base [file rootname $basename]
93 set files [glob -nocomplain $base.$perf_ext]
94 # The file doesn't exist; let the caller decide if that's a problem.
98 remote_upload host $base.$perf_ext $base.$perf_ext
99 set fd [open $base.$perf_ext r]
102 if [regexp "TIME" $line] {
103 if [regexp "TIME -1" $line] {
104 fail "$testcase perf check: no consistent time available, $optstr"
106 } elseif ![regexp "(\[0-9\]+)" "$line" val] {
110 # Report problems with an existing file.
112 fail "$testcase perf check: file $base.$perf_ext has wrong format, $optstr"
115 profopt-cleanup $perf_ext
120 # c-prof-execute -- compile for profiling and then feedback, then normal
122 # SRC is the full pathname of the testcase.
124 proc profopt-execute { src } {
127 global tool profile_option feedback_option prof_ext perf_ext perf_delta
130 regsub "^$srcdir/?" $src "" testcase
131 # If we couldn't rip $srcdir out of `src' then just do the best we can.
132 # The point is to reduce the unnecessary noise in the logs. Don't strip
133 # out too much because different testcases with the same name can confuse
135 if [string match "/*" $testcase] {
136 set testcase "[file tail [file dirname $src]]/[file tail $src]"
139 set executable $tmpdir/[file tail [file rootname $src].x]
142 foreach option $option_list {
143 set execname1 "${executable}${count}1"
144 set execname2 "${executable}${count}2"
145 set execname3 "${executable}${count}3"
148 remote_file build delete $execname1
149 remote_file build delete $execname2
150 remote_file build delete $execname3
151 verbose "Testing $testcase, $option" 1
153 # Compile for profiling.
156 lappend options "additional_flags=$option $profile_option"
157 set optstr "$option $profile_option"
158 set comp_output [${tool}_target_compile "$src" "$execname1" executable $options];
159 if ![${tool}_check_compile "$testcase compilation" $optstr $execname1 $comp_output] {
160 unresolved "$testcase execution, $optstr"
161 unresolved "$testcase compilation, $option $feedback_option"
162 unresolved "$testcase execution, $option $feedback_option"
166 # Run the profiled test.
168 set result [${tool}_load $execname1 "" ""]
169 set status [lindex $result 0]
170 # Make sure the profile data was generated, and fail if not.
171 if { $status == "pass" } {
172 set basename [file tail $testcase]
173 set base [file rootname $basename]
174 set files [glob -nocomplain $base.$prof_ext]
175 if { $files == "" } {
177 fail "$testcase execution: file $base.$prof_ext does not exist, $option $profile_option"
179 $status "$testcase execution, $optstr"
182 $status "$testcase execution, $optstr"
184 # Quit for this round if it failed
185 if { $status != "pass" } {
186 unresolved "$testcase compilation, $option $feedback_option"
187 unresolved "$testcase execution, $option $feedback_option"
190 remote_file build delete $execname1
192 # Compile with feedback-directed optimizations.
195 lappend options "additional_flags=$option $feedback_option"
196 set optstr "$option $feedback_option"
197 set comp_output [${tool}_target_compile "$src" "$execname2" "executable" $options];
198 if ![${tool}_check_compile "$testcase compilation" $optstr $execname2 $comp_output] {
199 unresolved "$testcase execution, $optstr"
203 # Run the profile-directed optimized test.
205 set result [${tool}_load "$execname2" "" ""]
206 set status [lindex $result 0]
207 $status "$testcase execution, $optstr"
208 if { $status != "pass" } {
212 # Remove the profiling data files.
213 profopt-cleanup $prof_ext
215 # If the test is not expected to produce performance data then
217 if ![info exists perf_ext] {
218 remote_file build delete $execname2
222 # Get the performance data from the test built with
223 # profile-directed optimization. If the file doesn't exist or if
224 # the value is zero, skip the performance comparison.
225 set val2 [profopt-perf-value $testcase $perf_ext $optstr]
227 remote_file build delete $execname2
231 # Compile with normal optimizations.
234 lappend options "additional_flags=$option"
236 set comp_output [${tool}_target_compile "$src" "$execname3" "executable" $options];
237 if ![${tool}_check_compile "$testcase compilation" $optstr $execname3 $comp_output] {
238 unresolved "$testcase execution, $optstr"
239 unresolved "$testcase perf check, $optstr"
243 # Run the test with normal optimizations.
245 set result [${tool}_load "$execname3" "" ""]
246 set status [lindex $result 0]
247 $status "$testcase execution, $optstr"
248 if { $status != "pass" } {
249 unresolved "$testcase perf check, $optstr"
253 # Get the performance data from the test built with normal
255 set val1 [profopt-perf-value $testcase $perf_ext $optstr]
258 # The data file existed with the profile-directed
259 # optimization so this one should, too.
260 fail "$testcase perf check: file $base.$perf_ext does not exist, $optstr"
265 # Compare results of the two runs and fail if the time with the
266 # profile-directed optimization is significantly more than the time
269 if { $val2 > $val1 } {
270 # Check for a performance degration outside of allowable limits.
271 if { [expr $val2 - $val1] > [expr [expr $val1 * $perf_delta] / 100] } {
275 if { $status == "fail" } {
276 fail "$testcase perf check: orig: $val1 new: $val2, $optstr"
278 $status "$testcase perf check, $optstr"
279 verbose "$testcase orig: $val1 new: $val2, $optstr" 2
280 remote_file build delete $execname2
281 remote_file build delete $execname3