ld/testsuite/ld-plugin/lto.exp

   1 # Expect script for ld-plugin LTO tests
   2 #   Copyright (C) 2011-2016 Free Software Foundation, Inc.
   3 #
   4 # This file is part of the GNU Binutils.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19 # MA 02110-1301, USA.
  20
  21 # These tests require plugin and LTO.
  22 if { ![check_plugin_api_available]
  23      || ![check_lto_available] } {
  24     return
  25 }
  26
  27 global CFLAGS
  28 global CXXFLAGS
  29 set saved_CFLAGS "$CFLAGS"
  30 set saved_CXXFLAGS "$CXXFLAGS"
  31 regsub -all "(\\-Wp,)?-D_FORTIFY_SOURCE=\[0-9\]+" $CFLAGS "" CFLAGS
  32 regsub -all "(\\-Wp,)?-D_FORTIFY_SOURCE=\[0-9\]+" $CXXFLAGS "" CXXFLAGS
  33
  34 proc restore_notify { } {
  35   global saved_CFLAGS
  36   global saved_CXXFLAGS
  37   set CFLAGS "$saved_CFLAGS"
  38   set CXXFLAGS "$saved_CXXFLAGS"
  39 }
  40
  41 set plugin_names {
  42     liblto_plugin.so
  43     liblto_plugin-0.dll
  44     cyglto_plugin-0.dll
  45 }
  46 set plug_opt ""
  47 foreach plug $plugin_names {
  48     set plug_so [run_host_cmd $CC "--print-prog-name $plug"]
  49     if { $plug_so eq $plug } then {
  50         set plug_so [run_host_cmd $CC "--print-file-name $plug"]
  51     }
  52     if { $plug_so ne $plug } then {
  53         set plug_opt "--plugin $plug_so"
  54         break
  55     }
  56 }
  57 set lto_fat ""
  58 set lto_no_fat ""
  59 if { [check_lto_fat_available] } {
  60   set lto_fat "-ffat-lto-objects"
  61   set lto_no_fat "-fno-fat-lto-objects"
  62 }
  63
  64 # Simple LTO tests and generate input files for complex LTO tests.
  65 set lto_link_tests [list \
  66   [list "LTO 1" \
  67    "-O2 -flto -fuse-linker-plugin" "-flto -fuse-linker-plugin" \
  68    {lto-1a.c lto-1b.c} {} "lto-1.exe"] \
  69   [list "Compile 2" \
  70    "" "-O2 -flto -fuse-linker-plugin" \
  71    {lto-2.c} {} ""] \
  72   [list "LTO 2" \
  73    "-static -O2 -flto -fuse-linker-plugin tmpdir/lto-2.o -lm" "" \
  74    {dummy.c} {} "lto-2.exe"] \
  75   [list "Compile 3a" \
  76    "" "-flto" \
  77    {lto-3a.c} {} ""] \
  78   [list "Compile 3c" \
  79    "" "-O2" \
  80    {lto-3c.c} {} ""] \
  81   [list "Build liblto-3.a" \
  82    "" "-flto $lto_fat" \
  83    {lto-3b.c} {} "liblto-3.a"] \
  84   [list "Compile 5a" \
  85    "" "-flto $lto_fat" \
  86    {lto-5a.c} {} ""] \
  87   [list "Compile 5b" \
  88    "" "-flto $lto_fat" \
  89    {lto-5b.c} {} ""] \
  90   [list "LTO 6" \
  91    "-O2 -flto -fuse-linker-plugin" "" \
  92    {lto-6.c} {} "lto-6.exe" "c"] \
  93   [list "Compile PR ld/12365" \
  94    "" "-flto -O2 $lto_fat" \
  95    {pr12365a.c pr12365b.c pr12365c.c} {} ""] \
  96   [list "Compile 9" \
  97    "" "-O2 -finline -flto" \
  98    {lto-9.cc} {} "" "c++"] \
  99   [list "Compile 11a" \
 100    "" "-O -flto" \
 101    {lto-11a.c} {} ""] \
 102   [list "Compile 11b" \
 103    "" "-O -flto" \
 104    {lto-11b.c} {} ""] \
 105   [list "Compile 11c" \
 106    "" "-O" \
 107    {lto-11c.c} {} ""] \
 108   [list "Build liblto-12.a" \
 109    "$plug_opt" "-O2 -flto" \
 110    {lto-12c.c} {} "liblto-12.a"] \
 111   [list "Compile 12" \
 112    "" "-O2 -flto" \
 113    {lto-12a.c lto-12b.c} {} ""] \
 114   [list "Compile 13" \
 115    "" "-O2 -flto" \
 116    {lto-13a.c lto-13b.c} {} ""] \
 117   [list "Build liblto-13.a" \
 118    "" "-O2" \
 119    {lto-13c.c} {} "liblto-13.a"] \
 120   [list "Compile 14a" \
 121    "" "-flto" \
 122    {lto-14a.c lto-14b.c} {} ""] \
 123   [list "Build liblto-14.a" \
 124    "$plug_opt" "-flto" \
 125    {lto-14c.c} {} "liblto-14.a"] \
 126   [list "Compile 15a" \
 127    "" "-flto" \
 128    {lto-15a.c} {} ""] \
 129   [list "Build liblto-15.a" \
 130    "$plug_opt" "-flto" \
 131    {lto-15b.c} {} "liblto-15.a"] \
 132   [list "PR ld/12696" \
 133    "-O2 -flto -fuse-linker-plugin -r -nostdlib" "-O2 -flto" \
 134    {pr12696-1.cc} {} "pr12696-1r.o" "c++"] \
 135   [list "Compile PR ld/12758" \
 136    "" "" \
 137    {pr12758a.s} {} ""] \
 138   [list "Build libpr12758.a" \
 139    "" "-flto -O2 $lto_fat" \
 140    {pr12758b.c} {} "libpr12758.a"] \
 141   [list "PR ld/12758" \
 142    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12758a.o -Wl,--start-group tmpdir/libpr12758.a -Wl,--end-group" "" \
 143    {dummy.c} {} "pr12758.exe"] \
 144   [list "Compile PR ld/12760" \
 145    "" "-g -O0" \
 146    {pr12760a.c} {} ""] \
 147   [list "Build libpr12760.a" \
 148    "" "-flto -O2 $lto_fat" \
 149    {pr12760b.c} {} "libpr12760.a"] \
 150   [list "PR ld/12760" \
 151    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12760a.o -Wl,--start-group tmpdir/libpr12760.a -Wl,--end-group" "" \
 152    {dummy.c} {} "pr12760.exe" "c" "pr12760a.c:6: warning: Bad bar"] \
 153   [list "Build libpr13183.a" \
 154    "-T" "-flto -O2 $lto_fat" \
 155    {pr13183a.c} {} "libpr13183.a"] \
 156   [list "Compile PR ld/13183" \
 157    "" "-flto -O2" \
 158    {pr13183b.c} {} ""] \
 159   [list "Compile PR ld/13201" \
 160    "" "-flto -O2" \
 161    {pr13201.c} {} ""] \
 162   [list "PR ld/13287" \
 163    "-flto -fuse-linker-plugin -Wl,--as-needed" "-flto" \
 164    {pr13287.cc} {} "pr13287.exe" "c++"] \
 165   [list "PR ld/15323 (1)" \
 166    "" "-O2" \
 167    {pr15323a.c} {} "" "c"] \
 168   [list "PR ld/15323 (2)" \
 169    "-O2 -flto -r -nostdlib" "-O2 -flto" \
 170    {pr15323a.c} {} "pr15323a-r.o" "c"] \
 171   [list "Compile(1) PR ld/pr16846" \
 172    "" "-flto" \
 173    {pr16846a.c pr16846b.c} {} ""] \
 174   [list "Compile(2) PR ld/pr16846" \
 175    "" "" \
 176    {pr16846c.c} {} ""] \
 177   [list "PR ld/pr16846(1)" \
 178    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846b.o tmpdir/pr16846c.o" "" \
 179    {dummy.c} {} "pr16846a.exe"] \
 180   [list "PR ld/pr16846(2)" \
 181    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846c.o tmpdir/pr16846b.o" "" \
 182    {dummy.c} {} "pr16846b.exe"] \
 183   [list "PR ld/19317 (1)" \
 184    "$plug_opt" "-flto $lto_no_fat" \
 185    {pr19317.c} {} "libpr19317.a"] \
 186 ]
 187
 188 if { [at_least_gcc_version 4 7] } {
 189     set lto_link_tests [concat $lto_link_tests [list \
 190       [list "Compile PR ld/12942 (1)" \
 191        "" "-flto -O2" \
 192        {pr12942a.cc pr12942c.cc} {} "" "c++"] \
 193       [list "Compile PR ld/12942 (2)" \
 194        "" "-O0" \
 195        {pr12942b.cc} {} "" "c++"] \
 196     ]]
 197 }
 198
 199 # Generate input files for complex LTO tests for ELF.
 200 set lto_link_elf_tests [list \
 201   [list "Compile 7" \
 202    "" "-flto -O2" \
 203    {lto-7a.c lto-7b.c lto-7c.c} {} ""] \
 204   [list "Build liblto-7.so" \
 205    "-shared" "-O2 -fpic" \
 206    {lto-7d.c} {} "liblto-7.so" "c"] \
 207   [list "Compile 8a" \
 208    "" "-O2" \
 209    {lto-8a.c} {} ""] \
 210   [list "Compile 8b" \
 211    "" "-flto -O2" \
 212    {lto-8b.c} {} ""] \
 213   [list "Build liblto-17a.so" \
 214    "-shared -O2 -fpic -flto -fuse-linker-plugin" "-O2 -fpic -flto" \
 215    {lto-17a.c} {{"nm" {} "lto-17a.d"}} "liblto-17a.so" "c"] \
 216   [list "Build liblto-17b.so 1" \
 217    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 218    {lto-17b.c} {{"nm" {} "lto-17b-1.d"}} "liblto-17b.so"] \
 219   [list "Build liblto-17b.so 2" \
 220    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 221    {lto-17b.c} {{"nm" {} "lto-17b-2.d"}} "liblto-17b.so"] \
 222   [list "PR ld/12982" \
 223    "-O2 -flto -fuse-linker-plugin" "-O2 -flto" \
 224    {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"] \
 225   [list "PR ld/12975" \
 226    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib -Wl,-version-script,pr12975.t" "-O2 -flto" \
 227    {pr12975.c} {{"readelf" {-s --wide} "pr12975.d"}} "pr12975.so" "c"] \
 228   [list "PR ld/13229" \
 229    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -finline -fno-early-inlining -flto" \
 230    {pr13229.cc} {{"readelf" {-s --wide} "pr13229.d"}} "pr13229.so" "c++"] \
 231   [list "PR ld/13244" \
 232    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -fno-early-inlining -flto" \
 233    {pr13244.c} {{"readelf" {-s --wide} "pr13244.d"}} "pr13244.so" "c"] \
 234   [list "Build libpr15146a.a" \
 235    "$plug_opt" "-flto -O2" \
 236    {pr15146a.c} {} "lib15146a.a"] \
 237   [list "Build pr15146b.so" \
 238    "-shared" "-O2 -fpic" \
 239    {pr15146b.c} {} "pr15146b.so" "c"] \
 240   [list "Build pr15146c.so" \
 241    "-shared -Wl,--no-as-needed tmpdir/pr15146b.so" "-O2 -fpic" \
 242    {pr15146c.c} {} "pr15146c.so" "c"] \
 243   [list "PR ld/15146 (1)" \
 244    "-O2 -flto -fuse-linker-plugin -Wl,-rpath-link,. -Wl,--no-copy-dt-needed-entries -Wl,--no-as-needed tmpdir/pr15146a.o tmpdir/pr15146c.so" "" \
 245    {dummy.c} {{"readelf" {-d} "pr15146.d"}} "pr15146a.exe"] \
 246   [list "Build libpr15146d.a" \
 247    "$plug_opt" "-flto -O2" \
 248    {pr15146d.c} {} "lib15146d.a"] \
 249   [list "Build libpr16746a.a" \
 250    "" "" \
 251    {pr16746a.c pr16746b.c} {} "lib15146a.a"] \
 252   [list "Build libpr16746b.a" \
 253    "$plug_opt" "-O2 -flto" \
 254    {pr16746c.c pr16746d.c} {} "lib15146b.a"] \
 255   [list "PR ld/16746 (1)" \
 256    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746a.o tmpdir/pr16746c.o" "-O2 -flto" \
 257    {dummy.c} {} "pr16746a.exe"] \
 258   [list "PR ld/16746 (2)" \
 259    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746c.o tmpdir/pr16746a.o" "-O2 -flto" \
 260    {dummy.c} {} "pr16746b.exe"] \
 261   [list "PR ld/14918" \
 262    "-flto" "-flto" \
 263    {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"] \
 264 ]
 265
 266 # Check final symbols in executables.
 267 set lto_link_symbol_tests [list \
 268   [list "LTO 3 symbol" \
 269    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 270    {dummy.c} {{"nm" {} "lto-3.d"}} "lto-3.exe" "c"] \
 271   [list "LTO 5 symbol" \
 272    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 273    {dummy.c} {{"nm" {} "lto-5.d"}} "lto-5.exe" "c"] \
 274   [list "LTO 9 symbol" \
 275    "-O2 -flto -fuse-linker-plugin tmpdir/lto-9.o" "" \
 276    {dummy.c} {{"nm" {-C} "lto-9.d"}} "lto-9.exe" "c++"] \
 277   [list "LTO 16a symbol" \
 278    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin" "-flto" \
 279    {lto-16a.c} {{"nm" {} "lto-16a.d"}} "lto-16.exe" "c"] \
 280   [list "LTO 16b symbol" \
 281    "-O2 -Wl,-e,foo -u bar -nostdlib -flto -fuse-linker-plugin" "-flto" \
 282    {lto-16a.c lto-16b.c} {{"nm" {} "lto-16b.d"}} "lto-16b.exe" "c"] \
 283   [list "PR ld/13183" \
 284    "-O2 -flto -fuse-linker-plugin tmpdir/pr13183b.o tmpdir/libpr13183.a" "" \
 285    {dummy.c} {{"nm" {} "pr13183.d"}} "pr13183.exe" "c"] \
 286 ]
 287
 288 # LTO run-time tests.
 289 set lto_run_tests [list \
 290   [list "LTO 3a" \
 291    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 292    {dummy.c} "lto-3b.exe" "lto-3.out" "" "c"] \
 293   [list "LTO 3b" \
 294    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/lto-3.o" "" \
 295    {dummy.c} "lto-3c.exe" "lto-3.out" "" "c"] \
 296   [list "LTO 3c" \
 297    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o -Wl,--whole-archive tmpdir/liblto-3.a -Wl,--no-whole-archive tmpdir/liblto-3.a" "" \
 298    {dummy.c} "lto-3d.exe" "lto-3.out" "" "c"] \
 299   [list "LTO 5" \
 300    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 301    {dummy.c} "lto-5.exe" "lto-5.out" "" "c"] \
 302   [list "LTO 11" \
 303    "-O -flto -fuse-linker-plugin tmpdir/liblto-11.a" "" \
 304    {dummy.c} "lto-11.exe" "lto-11.out" "" "c"] \
 305   [list "LTO 12a" \
 306    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/liblto-12.a tmpdir/lto-12b.o" "" \
 307    {dummy.c} "lto-12a.exe" "lto-12.out" "" "c"] \
 308   [list "LTO 12b" \
 309    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/lto-12b.o tmpdir/liblto-12.a" "" \
 310    {dummy.c} "lto-12b.exe" "lto-12.out" "" "c"] \
 311   [list "LTO 13" \
 312    "-O -flto -fuse-linker-plugin tmpdir/lto-13a.o tmpdir/liblto-13.a tmpdir/lto-13b.o" "" \
 313    {dummy.c} "lto-13.exe" "lto-13.out" "" "c"] \
 314   [list "LTO 14" \
 315    "-O2 -flto -fuse-linker-plugin tmpdir/lto-14a.o -Wl,--whole-archive tmpdir/liblto-14.a -Wl,--no-whole-archive tmpdir/lto-14b.o" "" \
 316    {dummy.c} "lto-14.exe" "lto-14.out" "" "c"] \
 317   [list "LTO 15" \
 318    "-O2 -flto -fuse-linker-plugin -Wl,--start-group tmpdir/liblto-15.a tmpdir/lto-15a.o -Wl,--end-group" "" \
 319    {dummy.c} "lto-15.exe" "lto-15.out" "" "c"] \
 320   [list "PR ld/13066" \
 321    "-O2 -flto -fuse-linker-plugin" "" \
 322    {pr13066.cc} "pr13066.exe" "pr13066.out" "" "c++"] \
 323   [list "PR ld/13201" \
 324    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr13201.o -lm" "" \
 325    {dummy.c} "pr13201.exe" "pr13201.out" "" "c"] \
 326   [list "PR ld/15323 (3)" \
 327    "-O2 -flto -fuse-linker-plugin tmpdir/pr15323a.o" "" \
 328    {pr15323b.c} "pr15323.exe" "pr15323.out" "-flto -O2" "c"] \
 329   [list "PR ld/15323 (4)" \
 330    "-O2 -flto tmpdir/pr15323a-r.o" "" \
 331    {dummy.c} "pr15323a.exe" "pr15323.out" "-flto -O2" "c"] \
 332   [list "PR ld/19317 (3)" \
 333    "-O2 -flto tmpdir/pr19317-r.o" "" \
 334    {dummy.c} "pr19317.exe" "pr19317.out" "-flto -O2" "c"] \
 335 ]
 336
 337 if { [at_least_gcc_version 4 7] } {
 338     set lto_run_tests [concat $lto_run_tests [list \
 339       [list "PR ld/12942 (1)" \
 340        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942b.o" "" \
 341        {dummy.c} "pr12942a.exe" "pr12942.out" "" "c++"] \
 342       [list "PR ld/12942 (2)" \
 343        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942c.o" "" \
 344        {dummy.c} "pr12942c.exe" "pr12942.out" "" "c++"] \
 345     ]]
 346 }
 347
 348 # LTO run-time tests for ELF
 349 set lto_run_elf_tests [list \
 350   [list "LTO 7" \
 351    "-O2 -flto -fuse-linker-plugin tmpdir/lto-7b.o tmpdir/lto-7c.o tmpdir/lto-7a.o -Wl,--no-as-needed tmpdir/liblto-7.so" "" \
 352    {dummy.c} "lto-7.exe" "lto-7.out" "" "c"] \
 353   [list "LTO 8" \
 354    "-O2 -flto -fuse-linker-plugin tmpdir/lto-8b.o tmpdir/lto-8a.o" "" \
 355    {dummy.c} "lto-8.exe" "lto-8.out" "" "c"] \
 356   [list "LTO TLS IE" \
 357    "-O2 -flto -fuse-linker-plugin" "" \
 358    {run-ie.c} "run-ie.exe" "run-ie.out" "" "c"] \
 359 ]
 360
 361 run_cc_link_tests $lto_link_tests
 362
 363 # Restrict these to ELF targets that support shared libs and PIC.
 364 if { [is_elf_format] && [check_lto_shared_available] } {
 365     run_cc_link_tests $lto_link_elf_tests
 366     set testname "PR ld/15146 (2)"
 367     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin -Wl,-rpath-link,. -Wl,--no-copy-dt-needed-entries -Wl,--no-as-needed tmpdir/pr15146d.o tmpdir/pr15146c.so"]
 368     if { [ regexp "undefined reference to symbol 'xxx'" $exec_output ] } {
 369         pass $testname
 370     } {
 371         fail $testname
 372     }
 373     set testname "PR ld/16746 (3)"
 374     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746b.o tmpdir/pr16746d.o"]
 375     if { [ regexp "warning: foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 376         pass $testname
 377     } {
 378         fail $testname
 379     }
 380     set testname "PR ld/16746 (4)"
 381     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746d.o tmpdir/pr16746b.o"]
 382     if { [ regexp "warning: foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 383         pass $testname
 384     } {
 385         fail $testname
 386     }
 387 }
 388
 389 set testname "Build liblto-11.a"
 390 remote_file host delete "tmpdir/liblto-11.a"
 391 set catch_output [run_host_cmd "$ar" "rc $plug_opt tmpdir/liblto-11.a tmpdir/lto-11a.o tmpdir/lto-11b.o tmpdir/lto-11c.o"]
 392 if {![string match "" $catch_output]} {
 393     unresolved $testname
 394     restore_notify
 395     return
 396 }
 397
 398 if { [at_least_gcc_version 4 7] } {
 399     # Check expected LTO linker errors.
 400     # Since the asm symbol name hack in pr12365b.c doesn't work on all
 401     # targets, run PR ld/12365 tests only for known targets.
 402     if { ([istarget "i?86-*-elf*"]
 403            || (([istarget "i?86-*-linux*"] || [istarget "i?86-*-gnu*"])
 404                 && ![istarget "*-*-*aout*"]
 405                 && ![istarget "*-*-*oldld*"])
 406            || [istarget "i?86-*-nacl*"]
 407            || [istarget "x86_64-*-nacl*"]
 408            || [istarget "x86_64-*-linux*"]
 409            || [istarget "amd64-*-linux*"]) } {
 410         set testname "PR ld/12365"
 411         set exec_output [run_host_cmd "$CC" "-O2 -flto -flto-partition=none -fuse-linker-plugin -o tmpdir/pr12365 tmpdir/pr12365a.o tmpdir/pr12365b.o tmpdir/pr12365c.o"]
 412         if { [ regexp "undefined reference to `my_bcopy'" $exec_output ] } {
 413             # Linker should catch the reference to undefined `my_bcopy'
 414             # error caused by a GCC bug.
 415             pass $testname
 416         } elseif { [ string match "" $exec_output ] } {
 417             global READELF
 418             set exec_output [run_host_cmd "$READELF" "-s -W tmpdir/pr12365"]
 419             if { [ regexp "my_bcopy" $exec_output ] } {
 420                 # Verify that there is no `my_bcopy' symbol in executable.
 421                 fail $testname
 422             } {
 423                 pass $testname
 424             }
 425         } {
 426             fail $testname
 427         }
 428     }
 429     set testname "PR ld/12942 (3)"
 430     set exec_output [run_host_cmd "$CXX" "-O2 -flto -fuse-linker-plugin tmpdir/pr12942b.o tmpdir/pr12942a.o"]
 431     if { [ regexp "undefined reference to `link_error\\(\\)'" $exec_output ] } {
 432         pass $testname
 433     } {
 434         fail $testname
 435     }
 436 }
 437
 438 # Run "ld -r" to generate inputs for complex LTO tests.
 439 run_dump_test "lto-3r"
 440 remote_exec host "mv" "tmpdir/dump tmpdir/lto-3.o"
 441 run_dump_test "lto-5r"
 442 remote_exec host "mv" "tmpdir/dump tmpdir/lto-5.o"
 443
 444 run_cc_link_tests $lto_link_symbol_tests
 445
 446 run_ld_link_tests [list \
 447   [list "PR ld/19317 (2)" \
 448    "-r tmpdir/pr19317.o" "" "" \
 449    {dummy.s} {} "pr19317-r.o"] \
 450 ]
 451
 452 # The following tests require running the executable generated by ld.
 453 if ![isnative] {
 454     return
 455 }
 456
 457 run_ld_link_exec_tests [] $lto_run_tests
 458
 459 if { [is_elf_format] } {
 460     run_ld_link_exec_tests [] $lto_run_elf_tests
 461 }
 462
 463 restore_notify