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 \
67 set prof_option_list $PROFOPT_OPTIONS
70 # profopt-cleanup -- remove profiling or performance results files.
72 # TESTCASE is the name of the test
73 # EXT is the extensions of files to remove
75 proc profopt-cleanup { testcase extlist } {
76 set basename [file tail $testcase]
77 set base [file rootname $basename]
78 foreach ext $extlist {
79 set files [glob -nocomplain $base.$ext]
81 eval "remote_file build delete $files"
87 # profopt-perf-value -- get performance value for a test
89 # TESTCASE is the name of the test
90 # PERF_EXT is the extension of the performance result file
91 # OPTSTR is the string of compiler options
93 proc profopt-perf-value { testcase perf_ext optstr } {
94 set basename [file tail $testcase]
95 set base [file rootname $basename]
96 set files [glob -nocomplain $base.$perf_ext]
97 # The file doesn't exist; let the caller decide if that's a problem.
101 remote_upload host $base.$perf_ext $base.$perf_ext
102 set fd [open $base.$perf_ext r]
105 if [regexp "TIME" $line] {
106 if [regexp "TIME -1" $line] {
107 fail "$testcase perf check: no consistent time available, $optstr"
109 } elseif ![regexp "(\[0-9\]+)" "$line" val] {
113 # Report problems with an existing file.
115 fail "$testcase perf check: file $base.$perf_ext has wrong format, $optstr"
118 profopt-cleanup $testcase $perf_ext
123 # dg-final-generate -- process code to run after the profile-generate step
125 # ARGS is the line number of the directive followed by the commands.
127 proc dg-final-generate { args } {
128 global generate_final_code
130 if { [llength $args] > 2 } {
131 error "[lindex $args 0]: too many arguments"
134 append generate_final_code "[lindex $args 1]\n"
138 # dg-final-use -- process code to run after the profile-use step
140 # ARGS is the line number of the directive followed by the commands.
142 proc dg-final-use { args } {
143 global use_final_code
145 if { [llength $args] > 2 } {
146 error "[lindex $args 0]: too many arguments"
149 append use_final_code "[lindex $args 1]\n"
153 # profopt-final-code -- run final code
155 # WHICH is "generate" or "use".
156 # FINAL_CODE is the TCL code to run.
157 # TESTCASE is the name of the test, for error messages.
159 proc profopt-final-code { which final_code name } {
160 # This is copied from dg-test in dg.exp of DejaGnu.
161 regsub -all "\\\\(\[{}\])" $final_code "\\1" final_code
162 proc profopt-final-proc { args } $final_code
163 if [catch "profopt-final-proc $name" errmsg] {
164 perror "$name: error executing dg-final-${which}: $errmsg"
165 unresolved "$name: Error executing dg-final-${which}: $errmsg"
170 # profopt-get-options -- process test directives
172 # SRC is the full pathname of the testcase.
174 proc profopt-get-options { src } {
175 # dg-options sets a variable called dg-extra-tool-flags.
176 set dg-extra-tool-flags ""
178 # dg-require-* sets dg-do-what.
179 upvar dg-do-what dg-do-what
181 # current_compiler_flags reads tool_flags from the same stack frame
182 # as dg-extra-tool-flags
185 set tmp [dg-get-options $src]
187 set cmd [lindex $op 0]
188 if { ![string compare "dg-options" $cmd] \
189 || ![string compare "dg-skip-if" $cmd] \
190 || ![string compare "dg-final-generate" $cmd] \
191 || ![string compare "dg-final-use" $cmd] \
192 || ![string compare "dg-additional-sources" $cmd] \
193 || [string match "dg-require-*" $cmd] } {
194 set status [catch "$op" errmsg]
195 if { $status != 0 } {
196 perror "$src: $errmsg for \"$op\"\n"
197 unresolved "$src: $errmsg for \"$op\""
201 # Ignore unrecognized dg- commands, but warn about them.
202 warning "profopt.exp does not support $cmd"
206 # Return flags to use for compiling the primary source file and for
208 return ${dg-extra-tool-flags}
212 # c-prof-execute -- compile for profiling and then feedback, then normal
214 # SRC is the full pathname of the testcase.
216 proc profopt-execute { src } {
218 global prof_option_list
219 global tool profile_option feedback_option prof_ext perf_ext perf_delta
220 global generate_final_code use_final_code
223 if ![info exists profile_option] {
224 error "No profile option specified for first compile."
226 if ![info exists feedback_option] {
227 error "No feedback option specified for second compile."
230 regsub "(?q)$srcdir/" $src "" testcase
231 # If we couldn't rip $srcdir out of `src' then just do the best we can.
232 # The point is to reduce the unnecessary noise in the logs. Don't strip
233 # out too much because different testcases with the same name can confuse
235 if [string match "/*" $testcase] {
236 set testcase "[file tail [file dirname $src]]/[file tail $src]"
239 set executable $tmpdir/[file tail [file rootname $src].x]
240 set basename [file tail $testcase]
241 set base [file rootname $basename]
244 foreach option $prof_option_list {
245 set execname1 "${executable}${count}1"
246 set execname2 "${executable}${count}2"
247 set execname3 "${executable}${count}3"
250 remote_file build delete $execname1
251 remote_file build delete $execname2
252 remote_file build delete $execname3
253 verbose "Testing $testcase, $option" 1
255 # Remove old profiling and performance data files.
256 foreach ext $prof_ext {
257 remote_file target delete $tmpdir/$base.$ext
259 if [info exists perf_ext] {
260 profopt-cleanup $testcase $perf_ext
263 # Process test directives.
265 set generate_final_code ""
266 set use_final_code ""
267 set dg-do-what [list "run" "" P]
268 set extra_flags [profopt-get-options $src]
269 if { [lindex ${dg-do-what} 1 ] == "N" } {
271 verbose "$src not supported on this target, skipping it" 3
275 set extra_options [dg-additional-files-options "" "$src"]
277 # Tree profiling requires TLS runtime support, which may need
279 if { [string first "-fprofile-generate" $profile_option] >= 0 } {
280 set extra_flags [add_options_for_tls $extra_flags]
283 # Compile for profiling.
285 set options "$extra_options"
286 lappend options "additional_flags=$option $extra_flags $profile_option"
287 set optstr "$option $profile_option"
288 set comp_output [${tool}_target_compile "$src" "$execname1" executable $options]
289 if ![${tool}_check_compile "$testcase compilation" $optstr $execname1 $comp_output] {
290 unresolved "$testcase execution, $optstr"
291 unresolved "$testcase compilation, $option $feedback_option"
292 unresolved "$testcase execution, $option $feedback_option"
296 # Run the profiled test.
298 set result [${tool}_load $execname1 "" ""]
299 set status [lindex $result 0]
301 # Make sure the profile data was generated, and fail if not.
302 if { $status == "pass" } {
303 foreach ext $prof_ext {
304 remote_upload target $tmpdir/$base.$ext
305 set files [glob -nocomplain $base.$ext]
306 if { $files == "" } {
309 fail "$testcase execution: file $base.$ext does not exist, $option $profile_option"
313 if { $missing_file == 0 } {
314 $status "$testcase execution, $optstr"
317 # If there is dg-final code to execute for the generate step, do it
318 # even if it failed; it might clean up temporary files.
319 if ![string match $generate_final_code ""] {
320 profopt-final-code "generate" $generate_final_code $testcase
323 remote_file build delete $execname1
325 # Quit for this round if it failed
326 if { $status != "pass" } {
327 unresolved "$testcase compilation, $option $feedback_option"
328 unresolved "$testcase execution, $option $feedback_option"
332 # Compile with feedback-directed optimizations.
334 set options "$extra_options"
335 lappend options "additional_flags=$option $extra_flags $feedback_option"
336 set optstr "$option $feedback_option"
337 set comp_output [${tool}_target_compile "$src" "$execname2" "executable" $options]
339 # Prune warnings we know are unwanted.
340 set comp_output [prune_warnings $comp_output]
342 if ![${tool}_check_compile "$testcase compilation" $optstr $execname2 $comp_output] {
343 unresolved "$testcase execution, $optstr"
347 # Run the profile-directed optimized test.
349 set result [${tool}_load "$execname2" "" ""]
350 set status [lindex $result 0]
351 $status "$testcase execution, $optstr"
353 # If there is dg-final code to execute for the use step, do it.
354 if ![string match $use_final_code ""] {
355 profopt-final-code "use" $use_final_code $testcase
358 # Remove the profiling data files.
359 foreach ext $prof_ext {
360 remote_file target delete $tmpdir/$base.$ext
363 if { $status != "pass" } {
367 # If the test is not expected to produce performance data then
369 if ![info exists perf_ext] {
370 remote_file build delete $execname2
374 # Get the performance data from the test built with
375 # profile-directed optimization. If the file doesn't exist or if
376 # the value is zero, skip the performance comparison.
377 set val2 [profopt-perf-value $testcase $perf_ext $optstr]
379 remote_file build delete $execname2
383 # Compile with normal optimizations.
385 set options "$extra_options"
386 lappend options "additional_flags=$option"
388 set comp_output [${tool}_target_compile "$src" "$execname3" "executable" $options]
389 if ![${tool}_check_compile "$testcase compilation" $optstr $execname3 $comp_output] {
390 unresolved "$testcase execution, $optstr"
391 unresolved "$testcase perf check, $optstr"
395 # Run the test with normal optimizations.
397 set result [${tool}_load "$execname3" "" ""]
398 set status [lindex $result 0]
399 $status "$testcase execution, $optstr"
400 if { $status != "pass" } {
401 unresolved "$testcase perf check, $optstr"
405 # Get the performance data from the test built with normal
407 set val1 [profopt-perf-value $testcase $perf_ext $optstr]
410 # The data file existed with the profile-directed
411 # optimization so this one should, too.
412 fail "$testcase perf check: file $base.$perf_ext does not exist, $optstr"
417 # Compare results of the two runs and fail if the time with the
418 # profile-directed optimization is significantly more than the time
421 if { $val2 > $val1 } {
422 # Check for a performance degration outside of allowable limits.
423 if { [expr $val2 - $val1] > [expr [expr $val1 * $perf_delta] / 100] } {
427 if { $status == "fail" } {
428 fail "$testcase perf check: orig: $val1 new: $val2, $optstr"
430 $status "$testcase perf check, $optstr"
431 verbose "$testcase orig: $val1 new: $val2, $optstr" 2
432 remote_file build delete $execname2
433 remote_file build delete $execname3