1 # Copyright (C) 2001, 2004, 2005, 2007, 2008, 2010, 2011
2 # Free Software Foundation, Inc.
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation; either version 3 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with GCC; see the file COPYING3. If not see
16 # <http://www.gnu.org/licenses/>.
18 # This script was submitted by Janis Johnson <janis187@us.ibm.com>.
20 # Test the functionality and optionally, performance improvement, of
21 # programs compiled with profile-directed optimizations. Compile and
22 # run a test with profile options, compile it with options using the
23 # profile feedback, and then run the test again. Optionally compile
24 # and run a third time without the profile-directed optimization and
25 # compare timing results of the program with normal optimization and
26 # with the profile-directed optimization. Each test is run using
27 # multiple sets of optimization and/or code generation options in
28 # addition to the profiling and feedback options.
30 # If perf_ext is defined and the performance value for the
31 # profile-directed test run is nonzero then the performance check will
37 global PROFOPT_OPTIONS perf_delta
39 # The including .exp file must define these.
40 global tool profile_option feedback_option prof_ext
41 if ![info exists tool] {
42 error "Tools is not specified."
44 if ![info exists prof_ext] {
45 error "No profile data file extensions specified."
48 # The maximum perforance degradation can be defined in the including file.
49 if ![info exists perf_delta] {
53 # The default option list can be overridden by
54 # PROFOPT_OPTIONS="{ { list1 } ... { list2 } }"
56 if ![info exists PROFOPT_OPTIONS] {
57 set PROFOPT_OPTIONS [list \
68 # profopt-cleanup -- remove profiling or performance results files.
70 # TESTCASE is the name of the test
71 # EXT is the extensions of files to remove
73 proc profopt-cleanup { testcase extlist } {
74 set basename [file tail $testcase]
75 set base [file rootname $basename]
76 foreach ext $extlist {
77 set files [glob -nocomplain $base.$ext]
79 eval "remote_file build delete $files"
85 # profopt-perf-value -- get performance value for a test
87 # TESTCASE is the name of the test
88 # PERF_EXT is the extension of the performance result file
89 # OPTSTR is the string of compiler options
91 proc profopt-perf-value { testcase perf_ext optstr } {
92 set basename [file tail $testcase]
93 set base [file rootname $basename]
94 set files [glob -nocomplain $base.$perf_ext]
95 # The file doesn't exist; let the caller decide if that's a problem.
99 remote_upload host $base.$perf_ext $base.$perf_ext
100 set fd [open $base.$perf_ext r]
103 if [regexp "TIME" $line] {
104 if [regexp "TIME -1" $line] {
105 fail "$testcase perf check: no consistent time available, $optstr"
107 } elseif ![regexp "(\[0-9\]+)" "$line" val] {
111 # Report problems with an existing file.
113 fail "$testcase perf check: file $base.$perf_ext has wrong format, $optstr"
116 profopt-cleanup $testcase $perf_ext
121 # dg-final-generate -- process code to run after the profile-generate step
123 # ARGS is the line number of the directive followed by the commands.
125 proc dg-final-generate { args } {
126 global generate_final_code
128 if { [llength $args] > 2 } {
129 error "[lindex $args 0]: too many arguments"
132 append generate_final_code "[lindex $args 1]\n"
136 # dg-final-use -- process code to run after the profile-use step
138 # ARGS is the line number of the directive followed by the commands.
140 proc dg-final-use { args } {
141 global use_final_code
143 if { [llength $args] > 2 } {
144 error "[lindex $args 0]: too many arguments"
147 append use_final_code "[lindex $args 1]\n"
151 # profopt-final-code -- run final code
153 # WHICH is "generate" or "use".
154 # FINAL_CODE is the TCL code to run.
155 # TESTCASE is the name of the test, for error messages.
157 proc profopt-final-code { which final_code name } {
158 # This is copied from dg-test in dg.exp of DejaGnu.
159 regsub -all "\\\\(\[{}\])" $final_code "\\1" final_code
160 proc profopt-final-proc { args } $final_code
161 if [catch "profopt-final-proc $name" errmsg] {
162 perror "$name: error executing dg-final-${which}: $errmsg"
163 unresolved "$name: Error executing dg-final-${which}: $errmsg"
168 # profopt-get-options -- process test directives
170 # SRC is the full pathname of the testcase.
172 proc profopt-get-options { src } {
173 # dg-options sets a variable called dg-extra-tool-flags.
174 set dg-extra-tool-flags ""
176 # dg-require-* sets dg-do-what.
177 upvar dg-do-what dg-do-what
179 # current_compiler_flags reads tool_flags from the same stack frame
180 # as dg-extra-tool-flags
183 set tmp [dg-get-options $src]
185 set cmd [lindex $op 0]
186 if { ![string compare "dg-options" $cmd] \
187 || ![string compare "dg-skip-if" $cmd] \
188 || ![string compare "dg-final-generate" $cmd] \
189 || ![string compare "dg-final-use" $cmd] \
190 || ![string compare "dg-additional-sources" $cmd] \
191 || [string match "dg-require-*" $cmd] } {
192 set status [catch "$op" errmsg]
193 if { $status != 0 } {
194 perror "$src: $errmsg for \"$op\"\n"
195 unresolved "$src: $errmsg for \"$op\""
199 # Ignore unrecognized dg- commands, but warn about them.
200 warning "profopt.exp does not support $cmd"
204 # Return flags to use for compiling the primary source file and for
206 return ${dg-extra-tool-flags}
210 # c-prof-execute -- compile for profiling and then feedback, then normal
212 # SRC is the full pathname of the testcase.
214 proc profopt-execute { src } {
216 global PROFOPT_OPTIONS
217 global tool profile_option feedback_option prof_ext perf_ext perf_delta
218 global generate_final_code use_final_code
220 global testname_with_flags
222 if ![info exists profile_option] {
223 error "No profile option specified for first compile."
225 if ![info exists feedback_option] {
226 error "No feedback option specified for second compile."
229 # Use the default option list or one defined for a set of tests.
230 if ![info exists PROFOPT_OPTIONS] {
231 error "PROFOPT_OPTIONS is not defined"
233 set prof_option_list $PROFOPT_OPTIONS
235 regsub "(?q)$srcdir/" $src "" testcase
236 # If we couldn't rip $srcdir out of `src' then just do the best we can.
237 # The point is to reduce the unnecessary noise in the logs. Don't strip
238 # out too much because different testcases with the same name can confuse
240 if [string match "/*" $testcase] {
241 set testcase "[file tail [file dirname $src]]/[file tail $src]"
244 # Several procedures access the name of the test with torture flags,
245 # normally defined in dg-test. Profile optimization tests don't
246 # use dg-test, so define it here to make it accessible via
247 # testname-for-summary.
248 set testname_with_flags $testcase
250 set executable $tmpdir/[file tail [file rootname $src].x]
251 set basename [file tail $testcase]
252 set base [file rootname $basename]
255 foreach option $prof_option_list {
256 set execname1 "${executable}${count}1"
257 set execname2 "${executable}${count}2"
258 set execname3 "${executable}${count}3"
261 remote_file build delete $execname1
262 remote_file build delete $execname2
263 remote_file build delete $execname3
264 verbose "Testing $testcase, $option" 1
266 # Remove old profiling and performance data files.
267 foreach ext $prof_ext {
268 remote_file target delete $tmpdir/$base.$ext
270 if [info exists perf_ext] {
271 profopt-cleanup $testcase $perf_ext
274 # Process test directives.
276 set generate_final_code ""
277 set use_final_code ""
278 set dg-do-what [list "run" "" P]
279 set extra_flags [profopt-get-options $src]
280 if { [lindex ${dg-do-what} 1 ] == "N" } {
282 unset testname_with_flags
283 verbose "$src not supported on this target, skipping it" 3
287 set extra_options [dg-additional-files-options "" "$src"]
289 # Tree profiling requires TLS runtime support, which may need
291 if { [string first "-fprofile-generate" $profile_option] >= 0 } {
292 set extra_flags [add_options_for_tls $extra_flags]
295 # Compile for profiling.
297 set options "$extra_options"
298 lappend options "additional_flags=$option $extra_flags $profile_option"
299 set optstr "$option $profile_option"
300 set comp_output [${tool}_target_compile "$src" "$execname1" executable $options]
301 if ![${tool}_check_compile "$testcase compilation" $optstr $execname1 $comp_output] {
302 unresolved "$testcase execution, $optstr"
303 unresolved "$testcase compilation, $option $feedback_option"
304 unresolved "$testcase execution, $option $feedback_option"
308 # Run the profiled test.
310 set result [${tool}_load $execname1 "" ""]
311 set status [lindex $result 0]
313 # Make sure the profile data was generated, and fail if not.
314 if { $status == "pass" } {
315 foreach ext $prof_ext {
316 remote_upload target $tmpdir/$base.$ext
317 set files [glob -nocomplain $base.$ext]
318 if { $files == "" } {
321 fail "$testcase execution: file $base.$ext does not exist, $option $profile_option"
325 if { $missing_file == 0 } {
326 $status "$testcase execution, $optstr"
329 # If there is dg-final code to execute for the generate step, do it
330 # even if it failed; it might clean up temporary files.
331 if ![string match $generate_final_code ""] {
332 profopt-final-code "generate" $generate_final_code $testcase
335 remote_file build delete $execname1
337 # Quit for this round if it failed
338 if { $status != "pass" } {
339 unresolved "$testcase compilation, $option $feedback_option"
340 unresolved "$testcase execution, $option $feedback_option"
344 # Compile with feedback-directed optimizations.
346 set options "$extra_options"
347 lappend options "additional_flags=$option $extra_flags $feedback_option"
348 set optstr "$option $feedback_option"
349 set comp_output [${tool}_target_compile "$src" "$execname2" "executable" $options]
351 # Prune warnings we know are unwanted.
352 set comp_output [prune_warnings $comp_output]
354 if ![${tool}_check_compile "$testcase compilation" $optstr $execname2 $comp_output] {
355 unresolved "$testcase execution, $optstr"
359 # Run the profile-directed optimized test.
361 set result [${tool}_load "$execname2" "" ""]
362 set status [lindex $result 0]
363 $status "$testcase execution, $optstr"
365 # If there is dg-final code to execute for the use step, do it.
366 if ![string match $use_final_code ""] {
367 profopt-final-code "use" $use_final_code $testcase
370 # Remove the profiling data files.
371 foreach ext $prof_ext {
372 remote_file target delete $tmpdir/$base.$ext
375 if { $status != "pass" } {
379 # If the test is not expected to produce performance data then
381 if ![info exists perf_ext] {
382 remote_file build delete $execname2
386 # Get the performance data from the test built with
387 # profile-directed optimization. If the file doesn't exist or if
388 # the value is zero, skip the performance comparison.
389 set val2 [profopt-perf-value $testcase $perf_ext $optstr]
391 remote_file build delete $execname2
395 # Compile with normal optimizations.
397 set options "$extra_options"
398 lappend options "additional_flags=$option"
400 set comp_output [${tool}_target_compile "$src" "$execname3" "executable" $options]
401 if ![${tool}_check_compile "$testcase compilation" $optstr $execname3 $comp_output] {
402 unresolved "$testcase execution, $optstr"
403 unresolved "$testcase perf check, $optstr"
407 # Run the test with normal optimizations.
409 set result [${tool}_load "$execname3" "" ""]
410 set status [lindex $result 0]
411 $status "$testcase execution, $optstr"
412 if { $status != "pass" } {
413 unresolved "$testcase perf check, $optstr"
417 # Get the performance data from the test built with normal
419 set val1 [profopt-perf-value $testcase $perf_ext $optstr]
422 # The data file existed with the profile-directed
423 # optimization so this one should, too.
424 fail "$testcase perf check: file $base.$perf_ext does not exist, $optstr"
429 # Compare results of the two runs and fail if the time with the
430 # profile-directed optimization is significantly more than the time
433 if { $val2 > $val1 } {
434 # Check for a performance degration outside of allowable limits.
435 if { [expr $val2 - $val1] > [expr [expr $val1 * $perf_delta] / 100] } {
439 if { $status == "fail" } {
440 fail "$testcase perf check: orig: $val1 new: $val2, $optstr"
442 $status "$testcase perf check, $optstr"
443 verbose "$testcase orig: $val1 new: $val2, $optstr" 2
444 remote_file build delete $execname2
445 remote_file build delete $execname3
448 unset testname_with_flags