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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [lib/] [profopt.exp] - Blame information for rev 328

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1 306 jeremybenn
# Copyright (C) 2001, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
2
 
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 3 of the License, or
6
# (at your option) any later version.
7
#
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.
12
#
13
# You should have received a copy of the GNU General Public License
14
# along with GCC; see the file COPYING3.  If not see
15
# .
16
#
17
# This script was submitted by Janis Johnson .
18
 
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
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# profile feedback, and then run the test again.  Optionally compile
23
# and run a third time without the profile-directed optimization and
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# compare timing results of the program with normal optimization and
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# with the profile-directed optimization. Each test is run using
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# multiple sets of optimization and/or code generation options in
27
# addition to the profiling and feedback options.
28
 
29
# If perf_ext is defined and the performance value for the
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# profile-directed test run is nonzero then the performance check will
31
# be done.
32
 
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load_lib dg.exp
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load_lib gcc-dg.exp
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global PROFOPT_OPTIONS perf_delta
37
 
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# The including .exp file must define these.
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global tool profile_option feedback_option prof_ext
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if ![info exists tool] {
41
    error "Tools is not specified."
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}
43
if ![info exists prof_ext] {
44
    error "No profile data file extensions specified."
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}
46
 
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# The maximum perforance degradation can be defined in the including file.
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if ![info exists perf_delta] {
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    set perf_delta 4
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}
51
 
52
# The default option list can be overridden by
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# PROFOPT_OPTIONS="{ { list1 } ... { list2 } }"
54
 
55
if ![info exists PROFOPT_OPTIONS] {
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    set PROFOPT_OPTIONS [list \
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        { -g } \
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        { -O0 } \
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        { -O1 } \
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        { -O2 } \
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        { -O3 } \
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        { -O3 -g } \
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        { -Os } ]
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}
65
 
66
set prof_option_list $PROFOPT_OPTIONS
67
 
68
#
69
# profopt-cleanup -- remove profiling or performance results files.
70
#
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# TESTCASE is the name of the test
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# EXT is the extensions of files to remove
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#
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proc profopt-cleanup { testcase extlist } {
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    set basename [file tail $testcase]
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    set base [file rootname $basename]
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    foreach ext $extlist {
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        set files [glob -nocomplain $base.$ext]
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        if { $files != "" } {
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            eval "remote_file build delete $files"
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        }
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    }
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}
84
 
85
#
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# profopt-perf-value -- get performance value for a test
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#
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# TESTCASE is the name of the test
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# PERF_EXT is the extension of the performance result file
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# OPTSTR is the string of compiler options
91
#
92
proc profopt-perf-value { testcase perf_ext optstr } {
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    set basename [file tail $testcase]
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    set base [file rootname $basename]
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    set files [glob -nocomplain $base.$perf_ext]
96
    # The file doesn't exist; let the caller decide if that's a problem.
97
    if { $files == "" } {
98
        return -2
99
    }
100
    remote_upload host $base.$perf_ext $base.$perf_ext
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    set fd [open $base.$perf_ext r]
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    gets $fd line
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    set val -2
104
    if [regexp "TIME" $line] {
105
        if [regexp "TIME -1" $line] {
106
            fail "$testcase perf check: no consistent time available, $optstr"
107
            set val -1
108
        } elseif ![regexp "(\[0-9\]+)" "$line" val] {
109
            set val -2
110
        }
111
    }
112
    # Report problems with an existing file.
113
    if { $val == -2 } {
114
        fail "$testcase perf check: file $base.$perf_ext has wrong format, $optstr"
115
    }
116
    close $fd
117
    profopt-cleanup $testcase $perf_ext
118
    return $val
119
}
120
 
121
#
122
# dg-final-generate -- process code to run after the profile-generate step
123
#
124
# ARGS is the line number of the directive followed by the commands.
125
#
126
proc dg-final-generate { args } {
127
    global generate_final_code
128
 
129
    if { [llength $args] > 2 } {
130
        error "[lindex $args 0]: too many arguments"
131
        return
132
    }
133
    append generate_final_code "[lindex $args 1]\n"
134
}
135
 
136
#
137
# dg-final-use -- process code to run after the profile-use step
138
#
139
# ARGS is the line number of the directive followed by the commands.
140
#
141
proc dg-final-use { args } {
142
    global use_final_code
143
 
144
    if { [llength $args] > 2 } {
145
        error "[lindex $args 0]: too many arguments"
146
        return
147
    }
148
    append use_final_code "[lindex $args 1]\n"
149
}
150
 
151
#
152
# profopt-final-code -- run final code
153
#
154
# WHICH is "generate" or "use".
155
# FINAL_CODE is the TCL code to run.
156
# TESTCASE is the name of the test, for error messages.
157
#
158
proc profopt-final-code { which final_code name } {
159
    # This is copied from dg-test in dg.exp of DejaGnu.
160
    regsub -all "\\\\(\[{}\])" $final_code "\\1" final_code
161
    proc profopt-final-proc { args } $final_code
162
    if [catch "profopt-final-proc $name" errmsg] {
163
        perror "$name: error executing dg-final-${which}: $errmsg"
164
        unresolved "$name: Error executing dg-final-${which}: $errmsg"
165
    }
166
}
167
 
168
#
169
# profopt-get-options -- process test directives
170
#
171
# SRC is the full pathname of the testcase.
172
#
173
proc profopt-get-options { src } {
174
    # dg-options sets a variable called dg-extra-tool-flags.
175
    set dg-extra-tool-flags ""
176
 
177
    # dg-require-* sets dg-do-what.
178
    upvar dg-do-what dg-do-what
179
 
180
    # current_compiler_flags reads tool_flags from the same stack frame
181
    # as dg-extra-tool-flags
182
    set tool_flags ""
183
 
184
    set tmp [dg-get-options $src]
185
    foreach op $tmp {
186
        set cmd [lindex $op 0]
187
        if { ![string compare "dg-options" $cmd] \
188
             || ![string compare "dg-skip-if" $cmd] \
189
             || ![string compare "dg-final-generate" $cmd] \
190
             || ![string compare "dg-final-use" $cmd] \
191
             || ![string compare "dg-additional-sources" $cmd] \
192
             || [string match "dg-require-*" $cmd]  } {
193
            set status [catch "$op" errmsg]
194
            if { $status != 0 } {
195
                perror "$src: $errmsg for \"$op\"\n"
196
                unresolved "$src: $errmsg for \"$op\""
197
                return
198
            }
199
        } else {
200
            # Ignore unrecognized dg- commands, but warn about them.
201
            warning "profopt.exp does not support $cmd"
202
        }
203
    }
204
 
205
    # Return flags to use for compiling the primary source file and for
206
    # linking.
207
    return ${dg-extra-tool-flags}
208
}
209
 
210
#
211
# c-prof-execute -- compile for profiling and then feedback, then normal
212
#
213
# SRC is the full pathname of the testcase.
214
#
215
proc profopt-execute { src } {
216
    global srcdir tmpdir
217
    global prof_option_list
218
    global tool profile_option feedback_option prof_ext perf_ext perf_delta
219
    global generate_final_code use_final_code
220
    global verbose
221
 
222
    if ![info exists profile_option] {
223
        error "No profile option specified for first compile."
224
    }
225
    if ![info exists feedback_option] {
226
        error "No feedback option specified for second compile."
227
    }
228
 
229
    regsub "(?q)$srcdir/" $src "" testcase
230
    # If we couldn't rip $srcdir out of `src' then just do the best we can.
231
    # The point is to reduce the unnecessary noise in the logs.  Don't strip
232
    # out too much because different testcases with the same name can confuse
233
    # `test-tool'.
234
    if [string match "/*" $testcase] {
235
        set testcase "[file tail [file dirname $src]]/[file tail $src]"
236
    }
237
 
238
    set executable $tmpdir/[file tail [file rootname $src].x]
239
    set basename [file tail $testcase]
240
    set base [file rootname $basename]
241
 
242
    set count 0
243
    foreach option $prof_option_list {
244
        set execname1 "${executable}${count}1"
245
        set execname2 "${executable}${count}2"
246
        set execname3 "${executable}${count}3"
247
        incr count
248
 
249
        remote_file build delete $execname1
250
        remote_file build delete $execname2
251
        remote_file build delete $execname3
252
        verbose "Testing $testcase, $option" 1
253
 
254
        # Remove old profiling and performance data files.
255
        foreach ext $prof_ext {
256
            remote_file target delete $tmpdir/$base.$ext
257
        }
258
        if [info exists perf_ext] {
259
            profopt-cleanup $testcase $perf_ext
260
        }
261
 
262
        # Process test directives.
263
 
264
        set generate_final_code ""
265
        set use_final_code ""
266
        set dg-do-what [list "run" "" P]
267
        set extra_flags [profopt-get-options $src]
268
        if { [lindex ${dg-do-what} 1 ] == "N" } {
269
            unsupported "$src"
270
            verbose "$src not supported on this target, skipping it" 3
271
            return
272
        }
273
 
274
        set extra_options [dg-additional-files-options "" "$src"]
275
 
276
        # Compile for profiling.
277
 
278
        set options "$extra_options"
279
        lappend options "additional_flags=$option $extra_flags $profile_option"
280
        set optstr "$option $profile_option"
281
        set comp_output [${tool}_target_compile "$src" "$execname1" executable $options]
282
        if ![${tool}_check_compile "$testcase compilation" $optstr $execname1 $comp_output] {
283
            unresolved "$testcase execution,   $optstr"
284
            unresolved "$testcase compilation, $option $feedback_option"
285
            unresolved "$testcase execution,   $option $feedback_option"
286
            continue
287
        }
288
 
289
        # Run the profiled test.
290
 
291
        set result [${tool}_load $execname1 "" ""]
292
        set status [lindex $result 0]
293
        set missing_file 0
294
        # Make sure the profile data was generated, and fail if not.
295
        if { $status == "pass" } {
296
            foreach ext $prof_ext {
297
                remote_upload target $tmpdir/$base.$ext
298
                set files [glob -nocomplain $base.$ext]
299
                if { $files == "" } {
300
                    set status "fail"
301
                    set missing_file 1
302
                    fail "$testcase execution: file $base.$ext does not exist, $option $profile_option"
303
                }
304
            }
305
        }
306
        if { $missing_file == 0 } {
307
            $status "$testcase execution,   $optstr"
308
        }
309
 
310
        # If there is dg-final code to execute for the generate step, do it
311
        # even if it failed; it might clean up temporary files.
312
        if ![string match $generate_final_code ""] {
313
            profopt-final-code "generate" $generate_final_code $testcase
314
        }
315
 
316
        remote_file build delete $execname1
317
 
318
        # Quit for this round if it failed
319
        if { $status != "pass" } {
320
            unresolved "$testcase compilation, $option $feedback_option"
321
            unresolved "$testcase execution,   $option $feedback_option"
322
            continue
323
        }
324
 
325
        # Compile with feedback-directed optimizations.
326
 
327
        set options "$extra_options"
328
        lappend options "additional_flags=$option $extra_flags $feedback_option"
329
        set optstr "$option $feedback_option"
330
        set comp_output [${tool}_target_compile "$src" "$execname2" "executable" $options]
331
        if ![${tool}_check_compile "$testcase compilation" $optstr $execname2 $comp_output] {
332
            unresolved "$testcase execution,   $optstr"
333
            continue
334
        }
335
 
336
        # Run the profile-directed optimized test.
337
 
338
        set result [${tool}_load "$execname2" "" ""]
339
        set status [lindex $result 0]
340
        $status "$testcase execution,   $optstr"
341
 
342
        # If there is dg-final code to execute for the use step, do it.
343
        if ![string match $use_final_code ""] {
344
            profopt-final-code "use" $use_final_code $testcase
345
        }
346
 
347
        # Remove the profiling data files.
348
        foreach ext $prof_ext {
349
            remote_file target delete $tmpdir/$base.$ext
350
        }
351
 
352
        if { $status != "pass" } {
353
            continue
354
        }
355
 
356
        # If the test is not expected to produce performance data then
357
        # we're done now.
358
        if ![info exists perf_ext] {
359
            remote_file build delete $execname2
360
            continue
361
        }
362
 
363
        # Get the performance data from the test built with
364
        # profile-directed optimization.  If the file doesn't exist or if
365
        # the value is zero, skip the performance comparison.
366
        set val2 [profopt-perf-value $testcase $perf_ext $optstr]
367
        if { $val2 <= 0 } {
368
            remote_file build delete $execname2
369
            continue
370
        }
371
 
372
        # Compile with normal optimizations.
373
 
374
        set options "$extra_options"
375
        lappend options "additional_flags=$option"
376
        set optstr "$option"
377
        set comp_output [${tool}_target_compile "$src" "$execname3" "executable" $options]
378
        if ![${tool}_check_compile "$testcase compilation" $optstr $execname3 $comp_output] {
379
            unresolved "$testcase execution,   $optstr"
380
            unresolved "$testcase perf check,  $optstr"
381
            continue
382
        }
383
 
384
        # Run the test with normal optimizations.
385
 
386
        set result [${tool}_load "$execname3" "" ""]
387
        set status [lindex $result 0]
388
        $status "$testcase execution,   $optstr"
389
        if { $status != "pass" } {
390
            unresolved "$testcase perf check, $optstr"
391
            continue
392
        }
393
 
394
        # Get the performance data from the test built with normal
395
        # optimization.
396
        set val1 [profopt-perf-value $testcase $perf_ext $optstr]
397
        if { $val1 < 0 } {
398
            if { $val1 == -2 } {
399
                # The data file existed with the profile-directed
400
                # optimization so this one should, too.
401
                fail "$testcase perf check: file $base.$perf_ext does not exist, $optstr"
402
            }
403
            continue
404
        }
405
 
406
        # Compare results of the two runs and fail if the time with the
407
        # profile-directed optimization is significantly more than the time
408
        # without it.
409
        set status "pass"
410
        if { $val2 > $val1 } {
411
            # Check for a performance degration outside of allowable limits.
412
            if { [expr $val2 - $val1] > [expr [expr $val1 * $perf_delta] / 100] } {
413
                set status "fail"
414
            }
415
        }
416
        if { $status == "fail" } {
417
            fail "$testcase perf check: orig: $val1  new: $val2, $optstr"
418
        } else {
419
            $status "$testcase perf check,  $optstr"
420
            verbose "$testcase orig: $val1  new: $val2, $optstr" 2
421
            remote_file build delete $execname2
422
            remote_file build delete $execname3
423
        }
424
    }
425
}

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