gcc/testsuite/lib/c-torture.exp

   1 # Copyright (C) 1992-1998, 1999, 2000, 2007, 2008
   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 # <http://www.gnu.org/licenses/>.
  17
  18 # This file was written by Rob Savoye. (rob@cygnus.com)
  19
  20 load_lib target-supports.exp
  21 load_lib file-format.exp
  22 load_lib target-libpath.exp
  23
  24 # The default option list can be overridden by
  25 # TORTURE_OPTIONS="{ { list1 } ... { listN } }"
  26
  27 if [info exists TORTURE_OPTIONS] {
  28     set C_TORTURE_OPTIONS $TORTURE_OPTIONS
  29 } else {
  30     # It is theoretically beneficial to group all of the O2/O3 options together,
  31     # as in many cases the compiler will generate identical executables for
  32     # all of them--and the c-torture testsuite will skip testing identical
  33     # executables multiple times.
  34     # Also note that -finline-functions is explicitly included in one of the
  35     # items below, even though -O3 is also specified, because some ports may
  36     # choose to disable inlining functions by default, even when optimizing.
  37     set C_TORTURE_OPTIONS [list \
  38         { -O0 } \
  39         { -O1 } \
  40         { -O2 } \
  41         { -O3 -fomit-frame-pointer } \
  42         { -O3 -fomit-frame-pointer -funroll-loops } \
  43         { -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions } \
  44         { -O3 -g } \
  45         { -Os } ]
  46 }
  47
  48 if [info exists ADDITIONAL_TORTURE_OPTIONS] {
  49     set C_TORTURE_OPTIONS \
  50         [concat $C_TORTURE_OPTIONS $ADDITIONAL_TORTURE_OPTIONS]
  51 }
  52
  53 set LTO_TORTURE_OPTIONS ""
  54 if [check_effective_target_lto] {
  55     set LTO_TORTURE_OPTIONS [list \
  56         { -O2 -flto } \
  57         { -O2 -fwhopr }
  58     ]
  59 }
  60
  61 global GCC_UNDER_TEST
  62 if ![info exists GCC_UNDER_TEST] {
  63     set GCC_UNDER_TEST "[find_gcc]"
  64 }
  65
  66 global orig_environment_saved
  67
  68 # This file may be sourced, so don't override environment settings
  69 # that have been previously setup.
  70 if { $orig_environment_saved == 0 } {
  71     append ld_library_path [gcc-set-multilib-library-path $GCC_UNDER_TEST]
  72     set_ld_library_path_env_vars
  73 }
  74
  75 #
  76 # c-torture-compile -- runs the Tege C-torture test
  77 #
  78 # SRC is the full pathname of the testcase.
  79 # OPTION is the specific compiler flag we're testing (eg: -O2).
  80 #
  81 proc c-torture-compile { src option } {
  82     global output
  83     global srcdir tmpdir
  84     global host_triplet
  85
  86     set output "$tmpdir/[file tail [file rootname $src]].o"
  87
  88     regsub "(?q)$srcdir/" $src "" testcase
  89     # If we couldn't rip $srcdir out of `src' then just do the best we can.
  90     # The point is to reduce the unnecessary noise in the logs.  Don't strip
  91     # out too much because different testcases with the same name can confuse
  92     # `test-tool'.
  93     if [string match "/*" $testcase] {
  94         set testcase "[file tail [file dirname $src]]/[file tail $src]"
  95     }
  96
  97     verbose "Testing $testcase, $option" 1
  98
  99     # Run the compiler and analyze the results.
 100     set options ""
 101     lappend options "additional_flags=-w $option"
 102
 103     set comp_output [gcc_target_compile "$src" "$output" object $options]
 104     gcc_check_compile $testcase $option $output $comp_output
 105     file_on_host delete $output
 106 }
 107
 108 #
 109 # c-torture-execute -- utility to compile and execute a testcase
 110 #
 111 # SOURCES is a list of full pathnames to the test source files.
 112 # The first filename in this list forms the "testcase".
 113 #
 114 # If the testcase has an associated .x file, we source that to run the
 115 # test instead.  We use .x so that we don't lengthen the existing filename
 116 # to more than 14 chars.
 117 #
 118 proc c-torture-execute { sources args } {
 119     global tmpdir tool srcdir output compiler_conditional_xfail_data
 120
 121     # Use the first source filename given as the filename under test.
 122     set src [lindex $sources 0]
 123
 124     if { [llength $args] > 0 } {
 125         set additional_flags [lindex $args 0]
 126     } else {
 127         set additional_flags ""
 128     }
 129     # Check for alternate driver.
 130     if [file exists [file rootname $src].x] {
 131         verbose "Using alternate driver [file rootname [file tail $src]].x" 2
 132         set done_p 0
 133         catch "set done_p \[source [file rootname $src].x\]"
 134         if { $done_p } {
 135             return
 136         }
 137     }
 138
 139     # Look for a loop within the source code - if we don't find one,
 140     # don't pass -funroll[-all]-loops.
 141     global torture_with_loops torture_without_loops
 142     if [expr [search_for $src "for*("]+[search_for $src "while*("]] then {
 143         set option_list $torture_with_loops
 144     } else {
 145         set option_list $torture_without_loops
 146     }
 147
 148     set executable $tmpdir/[file tail [file rootname $src].x]
 149
 150     regsub "(?q)$srcdir/" $src "" testcase
 151     # If we couldn't rip $srcdir out of `src' then just do the best we can.
 152     # The point is to reduce the unnecessary noise in the logs.  Don't strip
 153     # out too much because different testcases with the same name can confuse
 154     # `test-tool'.
 155     if [string match "/*" $testcase] {
 156         set testcase "[file tail [file dirname $src]]/[file tail $src]"
 157     }
 158
 159     set count 0
 160     set oldstatus "foo"
 161     foreach option $option_list {
 162         if { $count > 0 } {
 163             set oldexec $execname
 164         }
 165         set execname "${executable}${count}"
 166         incr count
 167
 168         # torture_{compile,execute}_xfail are set by the .x script
 169         # (if present)
 170         if [info exists torture_compile_xfail] {
 171             setup_xfail $torture_compile_xfail
 172         }
 173
 174         # torture_execute_before_{compile,execute} can be set by the .x script
 175         # (if present)
 176         if [info exists torture_eval_before_compile] {
 177             set ignore_me [eval $torture_eval_before_compile]
 178         }
 179
 180         file_on_host delete $execname
 181         verbose "Testing $testcase, $option" 1
 182
 183         set options ""
 184         lappend options "additional_flags=-w $option"
 185         if { $additional_flags != "" } {
 186             lappend options "additional_flags=$additional_flags"
 187         }
 188         set comp_output [gcc_target_compile "$sources" "${execname}" executable $options]
 189
 190         if ![gcc_check_compile "$testcase compilation" $option $execname $comp_output] {
 191             unresolved "$testcase execution, $option"
 192             file_on_host delete $execname
 193             continue
 194         }
 195
 196         # See if this source file uses "long long" types, if it does, and
 197         # no_long_long is set, skip execution of the test.
 198         if [target_info exists no_long_long] then {
 199             if [expr [search_for $src "long long"]] then {
 200                 unsupported "$testcase execution, $option"
 201                 continue
 202             }
 203         }
 204
 205         if [info exists torture_execute_xfail] {
 206             setup_xfail $torture_execute_xfail
 207         }
 208
 209         if [info exists torture_eval_before_execute] {
 210             set ignore_me [eval $torture_eval_before_execute]
 211         }
 212
 213
 214         # Sometimes we end up creating identical executables for two
 215         # consecutive sets of different of compiler options.
 216         #
 217         # In such cases we know the result of this test will be identical
 218         # to the result of the last test.
 219         #
 220         # So in cases where the time to load and run/simulate the test
 221         # is relatively high, compare the two binaries and avoid rerunning
 222         # tests if the executables are identical.
 223         #
 224         # Do not do this for native testing since the cost to load/execute
 225         # the test is fairly small and the comparison step actually slows
 226         # the entire process down because it usually does not "hit".
 227         set skip 0
 228         if { ![isnative] && [info exists oldexec] } {
 229             if { [file_on_host cmp $oldexec $execname] == 0 } {
 230                 set skip 1
 231             }
 232         }
 233         if { $skip == 0 } {
 234             set result [gcc_load "$execname" "" ""]
 235             set status [lindex $result 0]
 236             set output [lindex $result 1]
 237         }
 238         if { $oldstatus == "pass" } {
 239             file_on_host delete $oldexec
 240         }
 241         $status "$testcase execution, $option"
 242         set oldstatus $status
 243     }
 244     if [info exists status] {
 245         if { $status == "pass" } {
 246             file_on_host delete $execname
 247         }
 248     }
 249 }
 250
 251 #
 252 # search_for -- looks for a string match in a file
 253 #
 254 proc search_for { file pattern } {
 255     set fd [open $file r]
 256     while { [gets $fd cur_line]>=0 } {
 257         if [string match "*$pattern*" $cur_line] then {
 258             close $fd
 259             return 1
 260         }
 261     }
 262     close $fd
 263     return 0
 264 }
 265
 266 #
 267 # c-torture -- the c-torture testcase source file processor
 268 #
 269 # This runs compilation only tests (no execute tests).
 270 # SRC is the full pathname of the testcase, or just a file name in which case
 271 # we prepend $srcdir/$subdir.
 272 #
 273 # If the testcase has an associated .x file, we source that to run the
 274 # test instead.  We use .x so that we don't lengthen the existing filename
 275 # to more than 14 chars.
 276 #
 277 proc c-torture { args } {
 278     global srcdir subdir compiler_conditional_xfail_data
 279
 280     set src [lindex $args 0]
 281     if { [llength $args] > 1 } {
 282         set options [lindex $args 1]
 283     } else {
 284         set options ""
 285     }
 286
 287     # Prepend $srdir/$subdir if missing.
 288     if ![string match "*/*" $src] {
 289         set src "$srcdir/$subdir/$src"
 290     }
 291
 292     # Check for alternate driver.
 293     if [file exists [file rootname $src].x] {
 294         verbose "Using alternate driver [file rootname [file tail $src]].x" 2
 295         set done_p 0
 296         catch "set done_p \[source [file rootname $src].x\]"
 297         if { $done_p } {
 298             return
 299         }
 300     }
 301
 302     # Look for a loop within the source code - if we don't find one,
 303     # don't pass -funroll[-all]-loops.
 304     global torture_with_loops torture_without_loops
 305     if [expr [search_for $src "for*("]+[search_for $src "while*("]] then {
 306         set option_list $torture_with_loops
 307     } else {
 308         set option_list $torture_without_loops
 309     }
 310
 311     # loop through all the options
 312     foreach option $option_list {
 313         # torture_compile_xfail is set by the .x script (if present)
 314         if [info exists torture_compile_xfail] {
 315             setup_xfail $torture_compile_xfail
 316         }
 317
 318         # torture_execute_before_compile is set by the .x script (if present)
 319         if [info exists torture_eval_before_compile] {
 320             set ignore_me [eval $torture_eval_before_compile]
 321         }
 322
 323         c-torture-compile $src "$option $options"
 324     }
 325 }