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jeremybenn |
# Copyright (C) 2001, 2004, 2005, 2007, 2008, 2010, 2011
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# Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GCC; see the file COPYING3. If not see
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# .
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#
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# This script was submitted by Janis Johnson .
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# Test the functionality and optionally, performance improvement, of
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# programs compiled with profile-directed optimizations. Compile and
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# 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
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# 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
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# addition to the profiling and feedback options.
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# 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
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# be done.
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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
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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] {
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error "Tools is not specified."
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}
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if ![info exists prof_ext] {
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error "No profile data file extensions specified."
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}
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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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}
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# The default option list can be overridden by
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# PROFOPT_OPTIONS="{ { list1 } ... { list2 } }"
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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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}
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set prof_option_list $PROFOPT_OPTIONS
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#
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# profopt-cleanup -- remove profiling or performance results files.
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#
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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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}
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#
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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
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#
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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]
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# The file doesn't exist; let the caller decide if that's a problem.
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if { $files == "" } {
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return -2
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}
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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
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if [regexp "TIME" $line] {
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if [regexp "TIME -1" $line] {
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fail "$testcase perf check: no consistent time available, $optstr"
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set val -1
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} elseif ![regexp "(\[0-9\]+)" "$line" val] {
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set val -2
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}
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}
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# Report problems with an existing file.
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if { $val == -2 } {
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fail "$testcase perf check: file $base.$perf_ext has wrong format, $optstr"
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}
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close $fd
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profopt-cleanup $testcase $perf_ext
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return $val
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}
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#
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# dg-final-generate -- process code to run after the profile-generate step
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#
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# ARGS is the line number of the directive followed by the commands.
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#
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proc dg-final-generate { args } {
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global generate_final_code
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if { [llength $args] > 2 } {
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error "[lindex $args 0]: too many arguments"
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return
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}
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append generate_final_code "[lindex $args 1]\n"
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}
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#
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# dg-final-use -- process code to run after the profile-use step
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#
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# ARGS is the line number of the directive followed by the commands.
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#
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proc dg-final-use { args } {
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global use_final_code
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if { [llength $args] > 2 } {
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error "[lindex $args 0]: too many arguments"
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return
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}
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append use_final_code "[lindex $args 1]\n"
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}
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#
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# profopt-final-code -- run final code
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#
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# WHICH is "generate" or "use".
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# FINAL_CODE is the TCL code to run.
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# TESTCASE is the name of the test, for error messages.
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#
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proc profopt-final-code { which final_code name } {
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# This is copied from dg-test in dg.exp of DejaGnu.
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regsub -all "\\\\(\[{}\])" $final_code "\\1" final_code
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proc profopt-final-proc { args } $final_code
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if [catch "profopt-final-proc $name" errmsg] {
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perror "$name: error executing dg-final-${which}: $errmsg"
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unresolved "$name: Error executing dg-final-${which}: $errmsg"
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}
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}
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#
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# profopt-get-options -- process test directives
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#
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# SRC is the full pathname of the testcase.
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#
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proc profopt-get-options { src } {
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# dg-options sets a variable called dg-extra-tool-flags.
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set dg-extra-tool-flags ""
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# dg-require-* sets dg-do-what.
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upvar dg-do-what dg-do-what
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# current_compiler_flags reads tool_flags from the same stack frame
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# as dg-extra-tool-flags
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set tool_flags ""
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set tmp [dg-get-options $src]
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foreach op $tmp {
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set cmd [lindex $op 0]
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if { ![string compare "dg-options" $cmd] \
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|| ![string compare "dg-skip-if" $cmd] \
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|| ![string compare "dg-final-generate" $cmd] \
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|| ![string compare "dg-final-use" $cmd] \
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|| ![string compare "dg-additional-sources" $cmd] \
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|| [string match "dg-require-*" $cmd] } {
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set status [catch "$op" errmsg]
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if { $status != 0 } {
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perror "$src: $errmsg for \"$op\"\n"
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unresolved "$src: $errmsg for \"$op\""
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return
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}
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} else {
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# Ignore unrecognized dg- commands, but warn about them.
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warning "profopt.exp does not support $cmd"
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}
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}
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# Return flags to use for compiling the primary source file and for
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# linking.
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return ${dg-extra-tool-flags}
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}
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#
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# c-prof-execute -- compile for profiling and then feedback, then normal
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#
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# SRC is the full pathname of the testcase.
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#
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proc profopt-execute { src } {
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global srcdir tmpdir
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global prof_option_list
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global tool profile_option feedback_option prof_ext perf_ext perf_delta
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global generate_final_code use_final_code
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global verbose
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if ![info exists profile_option] {
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error "No profile option specified for first compile."
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}
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if ![info exists feedback_option] {
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error "No feedback option specified for second compile."
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}
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regsub "(?q)$srcdir/" $src "" testcase
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# If we couldn't rip $srcdir out of `src' then just do the best we can.
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# The point is to reduce the unnecessary noise in the logs. Don't strip
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# out too much because different testcases with the same name can confuse
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# `test-tool'.
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if [string match "/*" $testcase] {
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set testcase "[file tail [file dirname $src]]/[file tail $src]"
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}
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set executable $tmpdir/[file tail [file rootname $src].x]
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set basename [file tail $testcase]
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set base [file rootname $basename]
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set count 0
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foreach option $prof_option_list {
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set execname1 "${executable}${count}1"
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set execname2 "${executable}${count}2"
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set execname3 "${executable}${count}3"
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incr count
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remote_file build delete $execname1
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remote_file build delete $execname2
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remote_file build delete $execname3
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verbose "Testing $testcase, $option" 1
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# Remove old profiling and performance data files.
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foreach ext $prof_ext {
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remote_file target delete $tmpdir/$base.$ext
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}
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if [info exists perf_ext] {
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profopt-cleanup $testcase $perf_ext
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}
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# Process test directives.
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set generate_final_code ""
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set use_final_code ""
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set dg-do-what [list "run" "" P]
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set extra_flags [profopt-get-options $src]
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if { [lindex ${dg-do-what} 1 ] == "N" } {
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unsupported "$src"
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verbose "$src not supported on this target, skipping it" 3
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return
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}
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set extra_options [dg-additional-files-options "" "$src"]
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# Tree profiling requires TLS runtime support, which may need
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# additional flags.
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if { [string first "-fprofile-generate" $profile_option] >= 0 } {
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set extra_flags [add_options_for_tls $extra_flags]
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}
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# Compile for profiling.
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set options "$extra_options"
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lappend options "additional_flags=$option $extra_flags $profile_option"
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set optstr "$option $profile_option"
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set comp_output [${tool}_target_compile "$src" "$execname1" executable $options]
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if ![${tool}_check_compile "$testcase compilation" $optstr $execname1 $comp_output] {
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unresolved "$testcase execution, $optstr"
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unresolved "$testcase compilation, $option $feedback_option"
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unresolved "$testcase execution, $option $feedback_option"
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continue
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}
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# Run the profiled test.
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set result [${tool}_load $execname1 "" ""]
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set status [lindex $result 0]
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set missing_file 0
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| 301 |
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# Make sure the profile data was generated, and fail if not.
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if { $status == "pass" } {
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foreach ext $prof_ext {
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remote_upload target $tmpdir/$base.$ext
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set files [glob -nocomplain $base.$ext]
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| 306 |
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if { $files == "" } {
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set status "fail"
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set missing_file 1
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fail "$testcase execution: file $base.$ext does not exist, $option $profile_option"
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}
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}
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}
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if { $missing_file == 0 } {
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$status "$testcase execution, $optstr"
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}
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| 316 |
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| 317 |
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# If there is dg-final code to execute for the generate step, do it
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# even if it failed; it might clean up temporary files.
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if ![string match $generate_final_code ""] {
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profopt-final-code "generate" $generate_final_code $testcase
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}
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remote_file build delete $execname1
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| 324 |
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# Quit for this round if it failed
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if { $status != "pass" } {
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unresolved "$testcase compilation, $option $feedback_option"
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unresolved "$testcase execution, $option $feedback_option"
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continue
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}
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| 331 |
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| 332 |
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# Compile with feedback-directed optimizations.
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set options "$extra_options"
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lappend options "additional_flags=$option $extra_flags $feedback_option"
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| 336 |
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set optstr "$option $feedback_option"
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| 337 |
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set comp_output [${tool}_target_compile "$src" "$execname2" "executable" $options]
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| 339 |
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# Prune warnings we know are unwanted.
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set comp_output [prune_warnings $comp_output]
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| 342 |
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if ![${tool}_check_compile "$testcase compilation" $optstr $execname2 $comp_output] {
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unresolved "$testcase execution, $optstr"
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continue
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| 345 |
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}
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|
| 347 |
|
|
# Run the profile-directed optimized test.
|
| 348 |
|
|
|
| 349 |
|
|
set result [${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 |
|
|
}
|
