gcc/testsuite/lib/c-torture.exp

   1 # Copyright (C) 1992-2017 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 # <http://www.gnu.org/licenses/>.
  16
  17 # This file was written by Rob Savoye. (rob@cygnus.com)
  18
  19 load_lib target-supports.exp
  20 load_lib file-format.exp
  21 load_lib target-libpath.exp
  22 load_lib target-utils.exp
  23
  24 global GCC_UNDER_TEST
  25 if ![info exists GCC_UNDER_TEST] {
  26     set GCC_UNDER_TEST "[find_gcc]"
  27 }
  28
  29 global orig_environment_saved
  30
  31 # This file may be sourced, so don't override environment settings
  32 # that have been previously setup.
  33 if { $orig_environment_saved == 0 } {
  34     append ld_library_path [gcc-set-multilib-library-path $GCC_UNDER_TEST]
  35     set_ld_library_path_env_vars
  36 }
  37
  38 # The default option list can be overridden by
  39 # TORTURE_OPTIONS="{ list1 } ... { listN }"
  40
  41 set LTO_TORTURE_OPTIONS ""
  42 if [info exists TORTURE_OPTIONS] {
  43     set C_TORTURE_OPTIONS $TORTURE_OPTIONS
  44 } else {
  45     # It is theoretically beneficial to group all of the O2/O3 options together,
  46     # as in many cases the compiler will generate identical executables for
  47     # all of them--and the c-torture testsuite will skip testing identical
  48     # executables multiple times.
  49     # Also note that -finline-functions is explicitly included in one of the
  50     # items below, even though -O3 is also specified, because some ports may
  51     # choose to disable inlining functions by default, even when optimizing.
  52     set C_TORTURE_OPTIONS [list \
  53         { -O0 } \
  54         { -O1 } \
  55         { -O2 } \
  56         { -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions } \
  57         { -O3 -g } \
  58         { -Os } \
  59         { -Og -g } ]
  60
  61     if [check_effective_target_lto] {
  62         # When having plugin test both slim and fat LTO and plugin/nonplugin
  63         # path.
  64         if [check_linker_plugin_available] {
  65           set LTO_TORTURE_OPTIONS [list \
  66               { -O2 -flto -fno-use-linker-plugin -flto-partition=none } \
  67               { -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects }
  68           ]
  69         } else {
  70           set LTO_TORTURE_OPTIONS [list \
  71               { -O2 -flto -flto-partition=none } \
  72               { -O2 -flto }
  73           ]
  74         }
  75     }
  76 }
  77
  78 if [info exists ADDITIONAL_TORTURE_OPTIONS] {
  79     set C_TORTURE_OPTIONS \
  80         [concat $C_TORTURE_OPTIONS $ADDITIONAL_TORTURE_OPTIONS]
  81 }
  82
  83 #
  84 # c-torture-compile -- runs the Tege C-torture test
  85 #
  86 # SRC is the full pathname of the testcase.
  87 # OPTION is the specific compiler flag we're testing (eg: -O2).
  88 #
  89 proc c-torture-compile { src option } {
  90     global output
  91     global srcdir tmpdir
  92     global host_triplet
  93
  94     set output "$tmpdir/[file tail [file rootname $src]].o"
  95
  96     regsub "(?q)$srcdir/" $src "" testcase
  97     # If we couldn't rip $srcdir out of `src' then just do the best we can.
  98     # The point is to reduce the unnecessary noise in the logs.  Don't strip
  99     # out too much because different testcases with the same name can confuse
 100     # `test-tool'.
 101     if [string match "/*" $testcase] {
 102         set testcase "[file tail [file dirname $src]]/[file tail $src]"
 103     }
 104
 105     verbose "Testing $testcase, $option" 1
 106
 107     # Run the compiler and analyze the results.
 108     set options ""
 109     lappend options "additional_flags=-w $option"
 110
 111     set comp_output [gcc_target_compile "$src" "$output" object $options]
 112     gcc_check_compile $testcase $option $output $comp_output
 113     file_on_host delete $output
 114 }
 115
 116 #
 117 # c-torture-execute -- utility to compile and execute a testcase
 118 #
 119 # SOURCES is a list of full pathnames to the test source files.
 120 # The first filename in this list forms the "testcase".
 121 #
 122 # If the testcase has an associated .x file, we source that to run the
 123 # test instead.  We use .x so that we don't lengthen the existing filename
 124 # to more than 14 chars.
 125 #
 126 proc c-torture-execute { sources args } {
 127     global tmpdir tool srcdir output compiler_conditional_xfail_data
 128
 129     # Use the first source filename given as the filename under test.
 130     set src [lindex $sources 0]
 131
 132     if { [llength $args] > 0 } {
 133         set additional_flags [lindex $args 0]
 134     } else {
 135         set additional_flags ""
 136     }
 137     # Check for alternate driver.
 138     if [file exists [file rootname $src].x] {
 139         verbose "Using alternate driver [file rootname [file tail $src]].x" 2
 140         set done_p 0
 141         catch "set done_p \[source [file rootname $src].x\]"
 142         if { $done_p } {
 143             return
 144         }
 145     }
 146
 147     # Look for a loop within the source code - if we don't find one,
 148     # don't pass -funroll[-all]-loops.
 149     global torture_with_loops torture_without_loops
 150     if [expr [search_for $src "for*("]+[search_for $src "while*("]] then {
 151         set option_list $torture_with_loops
 152     } else {
 153         set option_list $torture_without_loops
 154     }
 155
 156     set executable $tmpdir/[file tail [file rootname $src].x]
 157
 158     regsub "(?q)$srcdir/" $src "" testcase
 159     # If we couldn't rip $srcdir out of `src' then just do the best we can.
 160     # The point is to reduce the unnecessary noise in the logs.  Don't strip
 161     # out too much because different testcases with the same name can confuse
 162     # `test-tool'.
 163     if [string match "/*" $testcase] {
 164         set testcase "[file tail [file dirname $src]]/[file tail $src]"
 165     }
 166
 167     set count 0
 168     set oldstatus "foo"
 169     foreach option $option_list {
 170         if { $count > 0 } {
 171             set oldexec $execname
 172         }
 173         set execname "${executable}${count}"
 174         incr count
 175
 176         # torture_{compile,execute}_xfail are set by the .x script
 177         # (if present)
 178         if [info exists torture_compile_xfail] {
 179             setup_xfail $torture_compile_xfail
 180         }
 181
 182         # torture_execute_before_{compile,execute} can be set by the .x script
 183         # (if present)
 184         if [info exists torture_eval_before_compile] {
 185             set ignore_me [eval $torture_eval_before_compile]
 186         }
 187
 188         file_on_host delete $execname
 189         verbose "Testing $testcase, $option" 1
 190
 191         set options ""
 192         lappend options "additional_flags=-w $option"
 193         if { $additional_flags != "" } {
 194             lappend options "additional_flags=$additional_flags"
 195         }
 196         set comp_output [gcc_target_compile "$sources" "${execname}" executable $options]
 197
 198         if ![gcc_check_compile "$testcase compilation" $option $execname $comp_output] {
 199             unresolved "$testcase execution, $option"
 200             file_on_host delete $execname
 201             continue
 202         }
 203
 204         # See if this source file uses "long long" types, if it does, and
 205         # no_long_long is set, skip execution of the test.
 206         if [target_info exists no_long_long] then {
 207             if [expr [search_for $src "long long"]] then {
 208                 unsupported "$testcase execution, $option"
 209                 continue
 210             }
 211         }
 212
 213         if [info exists torture_execute_xfail] {
 214             setup_xfail $torture_execute_xfail
 215         }
 216
 217         if [info exists torture_eval_before_execute] {
 218             set ignore_me [eval $torture_eval_before_execute]
 219         }
 220
 221
 222         # Sometimes we end up creating identical executables for two
 223         # consecutive sets of different of compiler options.
 224         #
 225         # In such cases we know the result of this test will be identical
 226         # to the result of the last test.
 227         #
 228         # So in cases where the time to load and run/simulate the test
 229         # is relatively high, compare the two binaries and avoid rerunning
 230         # tests if the executables are identical.
 231         #
 232         # Do not do this for native testing since the cost to load/execute
 233         # the test is fairly small and the comparison step actually slows
 234         # the entire process down because it usually does not "hit".
 235         set skip 0
 236         if { ![isnative] && [info exists oldexec] } {
 237             if { [file_on_host cmp $oldexec $execname] == 0 } {
 238                 set skip 1
 239             }
 240         }
 241         if { $skip == 0 } {
 242             set result [gcc_load "$execname" "" ""]
 243             set status [lindex $result 0]
 244             set output [lindex $result 1]
 245         }
 246         if { $oldstatus == "pass" } {
 247             file_on_host delete $oldexec
 248         }
 249         $status "$testcase execution, $option"
 250         set oldstatus $status
 251     }
 252     if [info exists status] {
 253         if { $status == "pass" } {
 254             file_on_host delete $execname
 255         }
 256     }
 257 }
 258
 259 #
 260 # search_for -- looks for a string match in a file
 261 #
 262 proc search_for { file pattern } {
 263     set fd [open $file r]
 264     while { [gets $fd cur_line]>=0 } {
 265         if [string match "*$pattern*" $cur_line] then {
 266             close $fd
 267             return 1
 268         }
 269     }
 270     close $fd
 271     return 0
 272 }
 273
 274 #
 275 # c-torture -- the c-torture testcase source file processor
 276 #
 277 # This runs compilation only tests (no execute tests).
 278 # SRC is the full pathname of the testcase, or just a file name in which case
 279 # we prepend $srcdir/$subdir.
 280 #
 281 # If the testcase has an associated .x file, we source that to run the
 282 # test instead.  We use .x so that we don't lengthen the existing filename
 283 # to more than 14 chars.
 284 #
 285 proc c-torture { args } {
 286     global srcdir subdir compiler_conditional_xfail_data
 287
 288     set src [lindex $args 0]
 289     if { [llength $args] > 1 } {
 290         set options [lindex $args 1]
 291     } else {
 292         set options ""
 293     }
 294
 295     # Prepend $srdir/$subdir if missing.
 296     if ![string match "*/*" $src] {
 297         set src "$srcdir/$subdir/$src"
 298     }
 299
 300     # Check for alternate driver.
 301     if [file exists [file rootname $src].x] {
 302         verbose "Using alternate driver [file rootname [file tail $src]].x" 2
 303         set done_p 0
 304         catch "set done_p \[source [file rootname $src].x\]"
 305         if { $done_p } {
 306             return
 307         }
 308     }
 309
 310     # Look for a loop within the source code - if we don't find one,
 311     # don't pass -funroll[-all]-loops.
 312     global torture_with_loops torture_without_loops
 313     if [expr [search_for $src "for*("]+[search_for $src "while*("]] then {
 314         set option_list $torture_with_loops
 315     } else {
 316         set option_list $torture_without_loops
 317     }
 318
 319     # loop through all the options
 320     foreach option $option_list {
 321         # torture_compile_xfail is set by the .x script (if present)
 322         if [info exists torture_compile_xfail] {
 323             setup_xfail $torture_compile_xfail
 324         }
 325
 326         # torture_execute_before_compile is set by the .x script (if present)
 327         if [info exists torture_eval_before_compile] {
 328             set ignore_me [eval $torture_eval_before_compile]
 329         }
 330
 331         c-torture-compile $src "$option $options"
 332     }
 333 }