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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [lib/] [profopt.exp] - Blame information for rev 849

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1 701 jeremybenn
# Copyright (C) 2001, 2004, 2005, 2007, 2008, 2010, 2011
2
# Free Software Foundation, Inc.
3
 
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.
8
#
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.
13
#
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
# .
17
#
18
# This script was submitted by Janis Johnson .
19
 
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.
29
 
30
# If perf_ext is defined and the performance value for the
31
# profile-directed test run is nonzero then the performance check will
32
# be done.
33
 
34
load_lib dg.exp
35
load_lib gcc-dg.exp
36
 
37
global PROFOPT_OPTIONS perf_delta
38
 
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."
43
}
44
if ![info exists prof_ext] {
45
    error "No profile data file extensions specified."
46
}
47
 
48
# The maximum perforance degradation can be defined in the including file.
49
if ![info exists perf_delta] {
50
    set perf_delta 4
51
}
52
 
53
# The default option list can be overridden by
54
# PROFOPT_OPTIONS="{ { list1 } ... { list2 } }"
55
 
56
if ![info exists PROFOPT_OPTIONS] {
57
    set PROFOPT_OPTIONS [list \
58
        { -g } \
59
        { -O0 } \
60
        { -O1 } \
61
        { -O2 } \
62
        { -O3 } \
63
        { -O3 -g } \
64
        { -Os } ]
65
}
66
 
67
set prof_option_list $PROFOPT_OPTIONS
68
 
69
#
70
# profopt-cleanup -- remove profiling or performance results files.
71
#
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# TESTCASE is the name of the test
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# EXT is the extensions of files to remove
74
#
75
proc profopt-cleanup { testcase extlist } {
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    set basename [file tail $testcase]
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    set base [file rootname $basename]
78
    foreach ext $extlist {
79
        set files [glob -nocomplain $base.$ext]
80
        if { $files != "" } {
81
            eval "remote_file build delete $files"
82
        }
83
    }
84
}
85
 
86
#
87
# profopt-perf-value -- get performance value for a test
88
#
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
92
#
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.
98
    if { $files == "" } {
99
        return -2
100
    }
101
    remote_upload host $base.$perf_ext $base.$perf_ext
102
    set fd [open $base.$perf_ext r]
103
    gets $fd line
104
    set val -2
105
    if [regexp "TIME" $line] {
106
        if [regexp "TIME -1" $line] {
107
            fail "$testcase perf check: no consistent time available, $optstr"
108
            set val -1
109
        } elseif ![regexp "(\[0-9\]+)" "$line" val] {
110
            set val -2
111
        }
112
    }
113
    # Report problems with an existing file.
114
    if { $val == -2 } {
115
        fail "$testcase perf check: file $base.$perf_ext has wrong format, $optstr"
116
    }
117
    close $fd
118
    profopt-cleanup $testcase $perf_ext
119
    return $val
120
}
121
 
122
#
123
# dg-final-generate -- process code to run after the profile-generate step
124
#
125
# ARGS is the line number of the directive followed by the commands.
126
#
127
proc dg-final-generate { args } {
128
    global generate_final_code
129
 
130
    if { [llength $args] > 2 } {
131
        error "[lindex $args 0]: too many arguments"
132
        return
133
    }
134
    append generate_final_code "[lindex $args 1]\n"
135
}
136
 
137
#
138
# dg-final-use -- process code to run after the profile-use step
139
#
140
# ARGS is the line number of the directive followed by the commands.
141
#
142
proc dg-final-use { args } {
143
    global use_final_code
144
 
145
    if { [llength $args] > 2 } {
146
        error "[lindex $args 0]: too many arguments"
147
        return
148
    }
149
    append use_final_code "[lindex $args 1]\n"
150
}
151
 
152
#
153
# profopt-final-code -- run final code
154
#
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.
158
#
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"
166
    }
167
}
168
 
169
#
170
# profopt-get-options -- process test directives
171
#
172
# SRC is the full pathname of the testcase.
173
#
174
proc profopt-get-options { src } {
175
    # dg-options sets a variable called dg-extra-tool-flags.
176
    set dg-extra-tool-flags ""
177
 
178
    # dg-require-* sets dg-do-what.
179
    upvar dg-do-what dg-do-what
180
 
181
    # current_compiler_flags reads tool_flags from the same stack frame
182
    # as dg-extra-tool-flags
183
    set tool_flags ""
184
 
185
    set tmp [dg-get-options $src]
186
    foreach op $tmp {
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\""
198
                return
199
            }
200
        } else {
201
            # Ignore unrecognized dg- commands, but warn about them.
202
            warning "profopt.exp does not support $cmd"
203
        }
204
    }
205
 
206
    # Return flags to use for compiling the primary source file and for
207
    # linking.
208
    return ${dg-extra-tool-flags}
209
}
210
 
211
#
212
# c-prof-execute -- compile for profiling and then feedback, then normal
213
#
214
# SRC is the full pathname of the testcase.
215
#
216
proc profopt-execute { src } {
217
    global srcdir tmpdir
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
221
    global verbose
222
 
223
    if ![info exists profile_option] {
224
        error "No profile option specified for first compile."
225
    }
226
    if ![info exists feedback_option] {
227
        error "No feedback option specified for second compile."
228
    }
229
 
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
234
    # `test-tool'.
235
    if [string match "/*" $testcase] {
236
        set testcase "[file tail [file dirname $src]]/[file tail $src]"
237
    }
238
 
239
    set executable $tmpdir/[file tail [file rootname $src].x]
240
    set basename [file tail $testcase]
241
    set base [file rootname $basename]
242
 
243
    set count 0
244
    foreach option $prof_option_list {
245
        set execname1 "${executable}${count}1"
246
        set execname2 "${executable}${count}2"
247
        set execname3 "${executable}${count}3"
248
        incr count
249
 
250
        remote_file build delete $execname1
251
        remote_file build delete $execname2
252
        remote_file build delete $execname3
253
        verbose "Testing $testcase, $option" 1
254
 
255
        # Remove old profiling and performance data files.
256
        foreach ext $prof_ext {
257
            remote_file target delete $tmpdir/$base.$ext
258
        }
259
        if [info exists perf_ext] {
260
            profopt-cleanup $testcase $perf_ext
261
        }
262
 
263
        # Process test directives.
264
 
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 ${dg-do-what} 1 ] == "N" } {
270
            unsupported "$src"
271
            verbose "$src not supported on this target, skipping it" 3
272
            return
273
        }
274
 
275
        set extra_options [dg-additional-files-options "" "$src"]
276
 
277
        # Tree profiling requires TLS runtime support, which may need
278
        # additional flags.
279
        if { [string first "-fprofile-generate" $profile_option] >= 0 } {
280
            set extra_flags [add_options_for_tls $extra_flags]
281
        }
282
 
283
        # Compile for profiling.
284
 
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"
293
            continue
294
        }
295
 
296
        # Run the profiled test.
297
 
298
        set result [${tool}_load $execname1 "" ""]
299
        set status [lindex $result 0]
300
        set missing_file 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 { $files == "" } {
307
                    set status "fail"
308
                    set missing_file 1
309
                    fail "$testcase execution: file $base.$ext does not exist, $option $profile_option"
310
                }
311
            }
312
        }
313
        if { $missing_file == 0 } {
314
            $status "$testcase execution,   $optstr"
315
        }
316
 
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
321
        }
322
 
323
        remote_file build delete $execname1
324
 
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"
329
            continue
330
        }
331
 
332
        # Compile with feedback-directed optimizations.
333
 
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]
338
 
339
        # Prune warnings we know are unwanted.
340
        set comp_output [prune_warnings $comp_output]
341
 
342
        if ![${tool}_check_compile "$testcase compilation" $optstr $execname2 $comp_output] {
343
            unresolved "$testcase execution,   $optstr"
344
            continue
345
        }
346
 
347
        # Run the profile-directed optimized test.
348
 
349
        set result [${tool}_load "$execname2" "" ""]
350
        set status [lindex $result 0]
351
        $status "$testcase execution,   $optstr"
352
 
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
356
        }
357
 
358
        # Remove the profiling data files.
359
        foreach ext $prof_ext {
360
            remote_file target delete $tmpdir/$base.$ext
361
        }
362
 
363
        if { $status != "pass" } {
364
            continue
365
        }
366
 
367
        # If the test is not expected to produce performance data then
368
        # we're done now.
369
        if ![info exists perf_ext] {
370
            remote_file build delete $execname2
371
            continue
372
        }
373
 
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]
378
        if { $val2 <= 0 } {
379
            remote_file build delete $execname2
380
            continue
381
        }
382
 
383
        # Compile with normal optimizations.
384
 
385
        set options "$extra_options"
386
        lappend options "additional_flags=$option"
387
        set optstr "$option"
388
        set comp_output [${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"
392
            continue
393
        }
394
 
395
        # Run the test with normal optimizations.
396
 
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"
402
            continue
403
        }
404
 
405
        # Get the performance data from the test built with normal
406
        # optimization.
407
        set val1 [profopt-perf-value $testcase $perf_ext $optstr]
408
        if { $val1 < 0 } {
409
            if { $val1 == -2 } {
410
                # The data file existed with the profile-directed
411
                # optimization so this one should, too.
412
                fail "$testcase perf check: file $base.$perf_ext does not exist, $optstr"
413
            }
414
            continue
415
        }
416
 
417
        # Compare results of the two runs and fail if the time with the
418
        # profile-directed optimization is significantly more than the time
419
        # without it.
420
        set status "pass"
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] } {
424
                set status "fail"
425
            }
426
        }
427
        if { $status == "fail" } {
428
            fail "$testcase perf check: orig: $val1  new: $val2, $optstr"
429
        } else {
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
434
        }
435
    }
436
}

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