ld/testsuite/ld-plugin/lto.exp

   1 # Expect script for ld-plugin LTO tests
   2 #   Copyright (C) 2011-2017 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 # Check to see if the C and C++ compilers work
  22 if { [which $CC] == 0 || [which $CXX] == 0 } {
  23     return
  24 }
  25
  26 # These tests require plugin and LTO.
  27 if { ![check_plugin_api_available]
  28      || ![check_lto_available] } {
  29     return
  30 }
  31
  32 global CFLAGS
  33 global CXXFLAGS
  34 set saved_CFLAGS "$CFLAGS"
  35 set saved_CXXFLAGS "$CXXFLAGS"
  36 regsub -all "(\\-Wp,)?-D_FORTIFY_SOURCE=\[0-9\]+" $CFLAGS "" CFLAGS
  37 regsub -all "(\\-Wp,)?-D_FORTIFY_SOURCE=\[0-9\]+" $CXXFLAGS "" CXXFLAGS
  38
  39 proc restore_notify { } {
  40   global saved_CFLAGS
  41   global saved_CXXFLAGS
  42   set CFLAGS "$saved_CFLAGS"
  43   set CXXFLAGS "$saved_CXXFLAGS"
  44 }
  45
  46 set plugin_names {
  47     liblto_plugin.so
  48     liblto_plugin-0.dll
  49     cyglto_plugin-0.dll
  50 }
  51 set plug_opt ""
  52 foreach plug $plugin_names {
  53     set plug_so [run_host_cmd $CC "--print-prog-name $plug"]
  54     if { $plug_so eq $plug } then {
  55         set plug_so [run_host_cmd $CC "--print-file-name $plug"]
  56     }
  57     if { $plug_so ne $plug } then {
  58         set plug_opt "--plugin $plug_so"
  59         break
  60     }
  61 }
  62 set lto_fat ""
  63 set lto_no_fat ""
  64 if { [check_lto_fat_available] } {
  65   set lto_fat "-ffat-lto-objects"
  66   set lto_no_fat "-fno-fat-lto-objects"
  67 }
  68
  69 # Simple LTO tests and generate input files for complex LTO tests.
  70 set lto_link_tests [list \
  71   [list "LTO 1" \
  72    "-O2 -flto -fuse-linker-plugin" "-flto -fuse-linker-plugin" \
  73    {lto-1a.c lto-1b.c} {} "lto-1.exe"] \
  74   [list "Compile 2" \
  75    "" "-O2 -flto -fuse-linker-plugin" \
  76    {lto-2.c} {} ""] \
  77   [list "LTO 2" \
  78    "-static -O2 -flto -fuse-linker-plugin tmpdir/lto-2.o -lm" "" \
  79    {dummy.c} {} "lto-2.exe"] \
  80   [list "Compile 3a" \
  81    "" "-flto" \
  82    {lto-3a.c} {} ""] \
  83   [list "Compile 3c" \
  84    "" "-O2" \
  85    {lto-3c.c} {} ""] \
  86   [list "Build liblto-3.a" \
  87    "" "-flto $lto_fat" \
  88    {lto-3b.c} {} "liblto-3.a"] \
  89   [list "Compile 5a" \
  90    "" "-flto $lto_fat" \
  91    {lto-5a.c} {} ""] \
  92   [list "Compile 5b" \
  93    "" "-flto $lto_fat" \
  94    {lto-5b.c} {} ""] \
  95   [list "LTO 6" \
  96    "-O2 -flto -fuse-linker-plugin" "" \
  97    {lto-6.c} {} "lto-6.exe" "c"] \
  98   [list "Compile PR ld/12365" \
  99    "" "-flto -O2 $lto_fat" \
 100    {pr12365a.c pr12365b.c pr12365c.c} {} ""] \
 101   [list "Compile 9" \
 102    "" "-O2 -finline -flto" \
 103    {lto-9.cc} {} "" "c++"] \
 104   [list "Compile 11a" \
 105    "" "-O -flto" \
 106    {lto-11a.c} {} ""] \
 107   [list "Compile 11b" \
 108    "" "-O -flto" \
 109    {lto-11b.c} {} ""] \
 110   [list "Compile 11c" \
 111    "" "-O" \
 112    {lto-11c.c} {} ""] \
 113   [list "Build liblto-12.a" \
 114    "$plug_opt" "-O2 -flto" \
 115    {lto-12c.c} {} "liblto-12.a"] \
 116   [list "Compile 12" \
 117    "" "-O2 -flto" \
 118    {lto-12a.c lto-12b.c} {} ""] \
 119   [list "Compile 13" \
 120    "" "-O2 -flto" \
 121    {lto-13a.c lto-13b.c} {} ""] \
 122   [list "Build liblto-13.a" \
 123    "" "-O2" \
 124    {lto-13c.c} {} "liblto-13.a"] \
 125   [list "Compile 14a" \
 126    "" "-flto" \
 127    {lto-14a.c lto-14b.c} {} ""] \
 128   [list "Build liblto-14.a" \
 129    "$plug_opt" "-flto" \
 130    {lto-14c.c} {} "liblto-14.a"] \
 131   [list "Compile 15a" \
 132    "" "-flto" \
 133    {lto-15a.c} {} ""] \
 134   [list "Build liblto-15.a" \
 135    "$plug_opt" "-flto" \
 136    {lto-15b.c} {} "liblto-15.a"] \
 137   [list "PR ld/12696" \
 138    "-O2 -flto -fuse-linker-plugin -r -nostdlib" "-O2 -flto" \
 139    {pr12696-1.cc} {} "pr12696-1r.o" "c++"] \
 140   [list "Compile PR ld/12758" \
 141    "" "" \
 142    {pr12758a.s} {} ""] \
 143   [list "Build libpr12758.a" \
 144    "" "-flto -O2 $lto_fat" \
 145    {pr12758b.c} {} "libpr12758.a"] \
 146   [list "PR ld/12758" \
 147    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12758a.o -Wl,--start-group tmpdir/libpr12758.a -Wl,--end-group" "" \
 148    {dummy.c} {} "pr12758.exe"] \
 149   [list "Compile PR ld/12760" \
 150    "" "-g -O0" \
 151    {pr12760a.c} {} ""] \
 152   [list "Build libpr12760.a" \
 153    "" "-flto -O2 $lto_fat" \
 154    {pr12760b.c} {} "libpr12760.a"] \
 155   [list "PR ld/12760" \
 156    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12760a.o -Wl,--start-group tmpdir/libpr12760.a -Wl,--end-group" "" \
 157    {dummy.c} {{warning "pr12760a.c:6: warning: Bad \\.?bar"}} \
 158    "pr12760.exe" "c"] \
 159   [list "Build libpr13183.a" \
 160    "-T" "-flto -O2 $lto_fat" \
 161    {pr13183a.c} {} "libpr13183.a"] \
 162   [list "Compile PR ld/13183" \
 163    "" "-flto -O2" \
 164    {pr13183b.c} {} ""] \
 165   [list "Compile PR ld/13201" \
 166    "" "-flto -O2" \
 167    {pr13201.c} {} ""] \
 168   [list "PR ld/13287" \
 169    "-flto -fuse-linker-plugin -Wl,--as-needed" "-flto" \
 170    {pr13287.cc} {} "pr13287.exe" "c++"] \
 171   [list "PR ld/15323 (1)" \
 172    "" "-O2" \
 173    {pr15323a.c} {} "" "c"] \
 174   [list "PR ld/15323 (2)" \
 175    "-O2 -flto -r -nostdlib" "-O2 -flto" \
 176    {pr15323a.c} {} "pr15323a-r.o" "c"] \
 177   [list "Compile(1) PR ld/pr16846" \
 178    "" "-flto" \
 179    {pr16846a.c pr16846b.c} {} ""] \
 180   [list "Compile(2) PR ld/pr16846" \
 181    "" "" \
 182    {pr16846c.c} {} ""] \
 183   [list "PR ld/pr16846(1)" \
 184    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846b.o tmpdir/pr16846c.o" "" \
 185    {dummy.c} {} "pr16846a.exe"] \
 186   [list "PR ld/pr16846(2)" \
 187    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846c.o tmpdir/pr16846b.o" "" \
 188    {dummy.c} {} "pr16846b.exe"] \
 189   [list "PR ld/19317 (1)" \
 190    "$plug_opt" "-flto $lto_no_fat" \
 191    {pr19317.c} {} "libpr19317.a"] \
 192   [list "Build pr20276a.o" \
 193    "" "-fno-lto" \
 194    {pr20276a.c}] \
 195   [list "Build pr20276b.o" \
 196    "$plug_opt" "-flto $lto_no_fat" \
 197    {pr20276b.c}] \
 198   [list "Build pr20267a.o" \
 199    "" "" \
 200    {pr20267a.c}] \
 201   [list "Build libpr20267a.a" \
 202    "$plug_opt" "-flto $lto_fat" \
 203    {pr20267b.c} {} "libpr20267a.a"] \
 204   [list "Build libpr20267b.a" \
 205    "$plug_opt" "-flto $lto_no_fat" \
 206    {pr20267b.c} {} "libpr20267b.a"] \
 207   [list "Build pr20321" \
 208    "-flto -Wl,-plugin,$plug_so" "-flto" \
 209    {pr20321.c} {{warning ".*: duplicated plugin"}} \
 210    "pr20321" "c"] \
 211 ]
 212
 213 if { [at_least_gcc_version 4 7] } {
 214     set lto_link_tests [concat $lto_link_tests [list \
 215       [list "Compile PR ld/12942 (1)" \
 216        "" "-flto -O2" \
 217        {pr12942a.cc pr12942c.cc} {} "" "c++"] \
 218       [list "Compile PR ld/12942 (2)" \
 219        "" "-O0" \
 220        {pr12942b.cc} {} "" "c++"] \
 221     ]]
 222 }
 223
 224 set lto_compile_elf_tests [list \
 225   [list "Compile 7" \
 226    "" "-flto -O2" \
 227    {lto-7a.c lto-7b.c lto-7c.c} {} ""] \
 228   [list "Compile 8a" \
 229    "" "-O2" \
 230    {lto-8a.c} {} ""] \
 231   [list "Compile 8b" \
 232    "" "-flto -O2" \
 233    {lto-8b.c} {} ""] \
 234 ]
 235
 236 # Generate input files for complex LTO tests for ELF.
 237 set lto_link_elf_tests [list \
 238   [list "Build liblto-7.so" \
 239    "-shared" "-O2 -fpic" \
 240    {lto-7d.c} {} "liblto-7.so" "c"] \
 241   [list "Build liblto-17a.so" \
 242    "-shared -O2 -fpic -flto -fuse-linker-plugin" "-O2 -fpic -flto" \
 243    {lto-17a.c} {{"nm" {} "lto-17a.d"}} "liblto-17a.so" "c"] \
 244   [list "Build liblto-17b.so 1" \
 245    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 246    {lto-17b.c} {{"nm" {} "lto-17b-1.d"}} "liblto-17b.so"] \
 247   [list "Build liblto-17b.so 2" \
 248    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 249    {lto-17b.c} {{"nm" {} "lto-17b-2.d"}} "liblto-17b.so"] \
 250   [list "PR ld/12982" \
 251    "-O2 -flto -fuse-linker-plugin" "-O2 -flto" \
 252    {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"] \
 253   [list "PR ld/12975" \
 254    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib -Wl,-version-script,pr12975.t" "-O2 -flto" \
 255    {pr12975.c} {{"readelf" {-s --wide} "pr12975.d"}} "pr12975.so" "c"] \
 256   [list "PR ld/13229" \
 257    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -finline -fno-early-inlining -flto" \
 258    {pr13229.cc} {{"readelf" {-s --wide} "pr13229.d"}} "pr13229.so" "c++"] \
 259   [list "PR ld/13244" \
 260    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -fno-early-inlining -flto" \
 261    {pr13244.c} {{"readelf" {-s --wide} "pr13244.d"}} "pr13244.so" "c"] \
 262   [list "Build libpr15146a.a" \
 263    "$plug_opt" "-flto -O2" \
 264    {pr15146a.c} {} "lib15146a.a"] \
 265   [list "Build pr15146b.so" \
 266    "-shared" "-O2 -fpic" \
 267    {pr15146b.c} {} "pr15146b.so" "c"] \
 268   [list "Build pr15146c.so" \
 269    "-shared -Wl,--no-as-needed tmpdir/pr15146b.so" "-O2 -fpic" \
 270    {pr15146c.c} {} "pr15146c.so" "c"] \
 271   [list "PR ld/15146 (1)" \
 272    "-O2 -flto -fuse-linker-plugin -Wl,-rpath-link,. -Wl,--no-copy-dt-needed-entries -Wl,--no-as-needed tmpdir/pr15146a.o tmpdir/pr15146c.so" "" \
 273    {dummy.c} {{"readelf" {-d} "pr15146.d"}} "pr15146a.exe"] \
 274   [list "Build libpr15146d.a" \
 275    "$plug_opt" "-flto -O2" \
 276    {pr15146d.c} {} "lib15146d.a"] \
 277   [list "Build libpr16746a.a" \
 278    "" "" \
 279    {pr16746a.c pr16746b.c} {} "lib15146a.a"] \
 280   [list "Build libpr16746b.a" \
 281    "$plug_opt" "-O2 -flto" \
 282    {pr16746c.c pr16746d.c} {} "lib15146b.a"] \
 283   [list "PR ld/16746 (1)" \
 284    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746a.o tmpdir/pr16746c.o" "-O2 -flto" \
 285    {dummy.c} {} "pr16746a.exe"] \
 286   [list "PR ld/16746 (2)" \
 287    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746c.o tmpdir/pr16746a.o" "-O2 -flto" \
 288    {dummy.c} {} "pr16746b.exe"] \
 289   [list "PR ld/14918" \
 290    "-flto" "-flto" \
 291    {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"] \
 292   [list "Build pr21382a.o" \
 293    "" "-O2 -flto" \
 294    {pr21382a.c} {} "" "c"] \
 295   [list "Build pr21382.so" \
 296    "-shared" "-O2 -fpic" \
 297    {pr21382b.c} {} "pr21382.so" "c"] \
 298 ]
 299
 300 # Check final symbols in executables.
 301 set lto_link_symbol_tests [list \
 302   [list "LTO 3 symbol" \
 303    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 304    {dummy.c} {{"nm" {} "lto-3.d"}} "lto-3.exe" "c"] \
 305   [list "LTO 5 symbol" \
 306    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 307    {dummy.c} {{"nm" {} "lto-5.d"}} "lto-5.exe" "c"] \
 308   [list "LTO 9 symbol" \
 309    "-O2 -flto -fuse-linker-plugin tmpdir/lto-9.o" "" \
 310    {dummy.c} {{"nm" {-C} "lto-9.d"}} "lto-9.exe" "c++"] \
 311   [list "LTO 16a symbol" \
 312    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin" "-flto" \
 313    {lto-16a.c} {{"nm" {} "lto-16a.d"}} "lto-16.exe" "c"] \
 314   [list "LTO 16b symbol" \
 315    "-O2 -Wl,-e,foo -u bar -nostdlib -flto -fuse-linker-plugin" "-flto" \
 316    {lto-16a.c lto-16b.c} {{"nm" {} "lto-16b.d"}} "lto-16b.exe" "c"] \
 317   [list "PR ld/13183" \
 318    "-O2 -flto -fuse-linker-plugin tmpdir/pr13183b.o tmpdir/libpr13183.a" "" \
 319    {dummy.c} {{"nm" {} "pr13183.d"}} "pr13183.exe" "c"] \
 320 ]
 321
 322 # LTO run-time tests.
 323 set lto_run_tests [list \
 324   [list "LTO 3a" \
 325    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 326    {dummy.c} "lto-3b.exe" "lto-3.out" "" "c"] \
 327   [list "LTO 3b" \
 328    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/lto-3.o" "" \
 329    {dummy.c} "lto-3c.exe" "lto-3.out" "" "c"] \
 330   [list "LTO 3c" \
 331    "-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" "" \
 332    {dummy.c} "lto-3d.exe" "lto-3.out" "" "c"] \
 333   [list "LTO 5" \
 334    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 335    {dummy.c} "lto-5.exe" "lto-5.out" "" "c"] \
 336   [list "LTO 11" \
 337    "-O -flto -fuse-linker-plugin tmpdir/liblto-11.a" "" \
 338    {dummy.c} "lto-11.exe" "lto-11.out" "" "c"] \
 339   [list "LTO 12a" \
 340    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/liblto-12.a tmpdir/lto-12b.o" "" \
 341    {dummy.c} "lto-12a.exe" "lto-12.out" "" "c"] \
 342   [list "LTO 12b" \
 343    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/lto-12b.o tmpdir/liblto-12.a" "" \
 344    {dummy.c} "lto-12b.exe" "lto-12.out" "" "c"] \
 345   [list "LTO 13" \
 346    "-O -flto -fuse-linker-plugin tmpdir/lto-13a.o tmpdir/liblto-13.a tmpdir/lto-13b.o" "" \
 347    {dummy.c} "lto-13.exe" "lto-13.out" "" "c"] \
 348   [list "LTO 14" \
 349    "-O2 -flto -fuse-linker-plugin tmpdir/lto-14a.o -Wl,--whole-archive tmpdir/liblto-14.a -Wl,--no-whole-archive tmpdir/lto-14b.o" "" \
 350    {dummy.c} "lto-14.exe" "lto-14.out" "" "c"] \
 351   [list "LTO 15" \
 352    "-O2 -flto -fuse-linker-plugin -Wl,--start-group tmpdir/liblto-15.a tmpdir/lto-15a.o -Wl,--end-group" "" \
 353    {dummy.c} "lto-15.exe" "lto-15.out" "" "c"] \
 354   [list "PR ld/13066" \
 355    "-O2 -flto -fuse-linker-plugin" "" \
 356    {pr13066.cc} "pr13066.exe" "pr13066.out" "" "c++"] \
 357   [list "PR ld/13201" \
 358    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr13201.o -lm" "" \
 359    {dummy.c} "pr13201.exe" "pr13201.out" "" "c"] \
 360   [list "PR ld/15323 (3)" \
 361    "-O2 -flto -fuse-linker-plugin tmpdir/pr15323a.o" "" \
 362    {pr15323b.c} "pr15323.exe" "pr15323.out" "-flto -O2" "c"] \
 363   [list "PR ld/15323 (4)" \
 364    "-O2 -flto tmpdir/pr15323a-r.o" "" \
 365    {dummy.c} "pr15323a.exe" "pr15323.out" "-flto -O2" "c"] \
 366   [list "PR ld/19317 (3)" \
 367    "-O2 -flto tmpdir/pr19317-r.o" "" \
 368    {dummy.c} "pr19317.exe" "pr19317.out" "-flto -O2" "c"] \
 369   [list "Run pr20276" \
 370    "-O2 -flto tmpdir/pr20276a.o tmpdir/pr20276b.o" "" \
 371    {dummy.c} "pr20276" "pass.out" "-flto -O2" "c"] \
 372   [list "Run pr20267a" \
 373    "-O2 -flto tmpdir/pr20267a.o tmpdir/libpr20267a.a" "" \
 374    {dummy.c} "pr20267a" "pass.out" "-flto -O2" "c"] \
 375   [list "Run pr20267b" \
 376    "-O2 -flto tmpdir/pr20267a.o tmpdir/libpr20267b.a" "" \
 377    {dummy.c} "pr20267b" "pass.out" "-flto -O2" "c"] \
 378 ]
 379
 380 if { [at_least_gcc_version 4 7] } {
 381     set lto_run_tests [concat $lto_run_tests [list \
 382       [list "PR ld/12942 (1)" \
 383        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942b.o" "" \
 384        {dummy.c} "pr12942a.exe" "pr12942.out" "" "c++"] \
 385       [list "PR ld/12942 (2)" \
 386        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942c.o" "" \
 387        {dummy.c} "pr12942c.exe" "pr12942.out" "" "c++"] \
 388     ]]
 389 }
 390
 391 # LTO run-time tests for ELF which require shared library support.
 392 set lto_run_elf_shared_tests [list \
 393   [list "LTO 7" \
 394    "-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" "" \
 395    {dummy.c} "lto-7.exe" "lto-7.out" "" "c"] \
 396   [list "Run pr21382" \
 397    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr21382a.o tmpdir/pr21382.so" "" \
 398    {dummy.c} "pr21382.exe" "pass.out" "" "c"] \
 399 ]
 400
 401 # LTO run-time tests for ELF
 402 set lto_run_elf_tests [list \
 403   [list "LTO 8" \
 404    "-O2 -flto -fuse-linker-plugin tmpdir/lto-8b.o tmpdir/lto-8a.o" "" \
 405    {dummy.c} "lto-8.exe" "lto-8.out" "" "c"] \
 406   [list "LTO TLS IE" \
 407    "-O2 -flto -fuse-linker-plugin" "" \
 408    {run-ie.c} "run-ie.exe" "run-ie.out" "" "c"] \
 409 ]
 410
 411 run_cc_link_tests $lto_link_tests
 412
 413 # These compilation tests generate intermediate object files which will be used
 414 # by some elf tests besides shared libs tests.  So, always compile them.
 415 run_cc_link_tests $lto_compile_elf_tests
 416
 417 # Restrict these to ELF targets that support shared libs and PIC.
 418 if { [is_elf_format] && [check_lto_shared_available] } {
 419     run_cc_link_tests $lto_link_elf_tests
 420     set testname "PR ld/15146 (2)"
 421     set exec_output [run_host_cmd "$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"]
 422     if { [ regexp "undefined reference to symbol '\\.?xxx'" $exec_output ] } {
 423         pass $testname
 424     } {
 425         fail $testname
 426     }
 427     set testname "PR ld/16746 (3)"
 428     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746b.o tmpdir/pr16746d.o"]
 429     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 430         pass $testname
 431     } {
 432         fail $testname
 433     }
 434     set testname "PR ld/16746 (4)"
 435     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746d.o tmpdir/pr16746b.o"]
 436     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 437         pass $testname
 438     } {
 439         fail $testname
 440     }
 441 }
 442
 443 set testname "Build liblto-11.a"
 444 remote_file host delete "tmpdir/liblto-11.a"
 445 set catch_output [run_host_cmd "$ar" "rc $plug_opt tmpdir/liblto-11.a tmpdir/lto-11a.o tmpdir/lto-11b.o tmpdir/lto-11c.o"]
 446 if {![string match "" $catch_output]} {
 447     unresolved $testname
 448     restore_notify
 449     return
 450 }
 451
 452 if { [at_least_gcc_version 4 7] } {
 453     # Check expected LTO linker errors.
 454     # Since the asm symbol name hack in pr12365b.c doesn't work on all
 455     # targets, run PR ld/12365 tests only for known targets.
 456     if { ([istarget "i?86-*-elf*"]
 457            || (([istarget "i?86-*-linux*"] || [istarget "i?86-*-gnu*"])
 458                 && ![istarget "*-*-*aout*"]
 459                 && ![istarget "*-*-*oldld*"])
 460            || [istarget "i?86-*-nacl*"]
 461            || [istarget "x86_64-*-nacl*"]
 462            || [istarget "x86_64-*-linux*"]
 463            || [istarget "amd64-*-linux*"]) } {
 464         set testname "PR ld/12365"
 465         set exec_output [run_host_cmd "$CC" "-O2 -flto -flto-partition=none -fuse-linker-plugin -o tmpdir/pr12365 tmpdir/pr12365a.o tmpdir/pr12365b.o tmpdir/pr12365c.o"]
 466         if { [ regexp "undefined reference to `my_bcopy'" $exec_output ] } {
 467             # Linker should catch the reference to undefined `my_bcopy'
 468             # error caused by a GCC bug.
 469             pass $testname
 470         } elseif { [ string match "" $exec_output ] } {
 471             global READELF
 472             set exec_output [run_host_cmd "$READELF" "-s -W tmpdir/pr12365"]
 473             if { [ regexp "my_bcopy" $exec_output ] } {
 474                 # Verify that there is no `my_bcopy' symbol in executable.
 475                 fail $testname
 476             } {
 477                 pass $testname
 478             }
 479         } {
 480             fail $testname
 481         }
 482     }
 483     set testname "PR ld/12942 (3)"
 484     set exec_output [run_host_cmd "$CXX" "-O2 -flto -fuse-linker-plugin tmpdir/pr12942b.o tmpdir/pr12942a.o"]
 485     if { [ regexp "undefined reference to `\\.?link_error\\(\\)'" $exec_output ] } {
 486         pass $testname
 487     } {
 488         fail $testname
 489     }
 490 }
 491
 492 # Run "ld -r" to generate inputs for complex LTO tests.
 493 run_dump_test "lto-3r"
 494 remote_exec host "mv" "tmpdir/dump tmpdir/lto-3.o"
 495 run_dump_test "lto-5r"
 496 remote_exec host "mv" "tmpdir/dump tmpdir/lto-5.o"
 497
 498 run_cc_link_tests $lto_link_symbol_tests
 499
 500 run_ld_link_tests [list \
 501   [list "PR ld/19317 (2)" \
 502    "-r tmpdir/pr19317.o" "" "" \
 503    {dummy.s} {} "pr19317-r.o"] \
 504 ]
 505
 506 run_ld_link_exec_tests $lto_run_tests
 507
 508 if { [is_elf_format] } {
 509     run_ld_link_exec_tests $lto_run_elf_tests
 510 }
 511
 512 if { [is_elf_format] && [check_lto_shared_available] } {
 513     run_ld_link_exec_tests $lto_run_elf_shared_tests
 514 }
 515
 516 proc pr20103 {cflags libs} {
 517     global CC
 518
 519     set testname "PR ld/20103 ($cflags $libs)"
 520     set exec_output [run_host_cmd "$CC" "$cflags $libs"]
 521     if { [ regexp "undefined reference to `\\.?dead'" $exec_output ] } {
 522         pass "$testname (1)"
 523     } {
 524         fail "$testname (1)"
 525     }
 526     if { [ regexp "plugin needed to handle lto object" $exec_output ] } {
 527         fail "$testname (2)"
 528     } {
 529         pass "$testname (2)"
 530     }
 531 }
 532
 533 if { [check_lto_fat_available] } {
 534     run_cc_link_tests [list \
 535         [list \
 536             "Build fatpr20103a.a" \
 537             "$plug_opt" "-flto -ffat-lto-objects" \
 538             {pr20103a.c} {} "fatpr20103a.a"
 539         ] \
 540         [list \
 541             "Build fatpr20103b.a" \
 542             "$plug_opt" "-flto -ffat-lto-objects" \
 543             {pr20103b.c} {} "fatpr20103b.a"
 544         ] \
 545         [list \
 546             "Build fatpr20103c.a" \
 547             "$plug_opt" "-flto -ffat-lto-objects" \
 548             {pr20103c.c} {} "fatpr20103c.a" \
 549         ] \
 550         [list \
 551             "Build thinpr20103a.a" \
 552             "$plug_opt" "-flto -fno-fat-lto-objects" \
 553             {pr20103a.c} {} "thinpr20103a.a"
 554         ] \
 555         [list \
 556             "Build thinpr20103b.a" \
 557             "$plug_opt" "-flto -fno-fat-lto-objects" \
 558             {pr20103b.c} {} "thinpr20103b.a"
 559         ] \
 560         [list \
 561             "Build thinpr20103c.a" \
 562             "$plug_opt" "-flto -fno-fat-lto-objects" \
 563             {pr20103c.c} {} "thinpr20103c.a" \
 564         ] \
 565         [list \
 566             "Build pr20103a" \
 567             "-O2 -flto -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 568             "-O2 -flto" \
 569             {dummy.c} {} "pr20103a" \
 570         ] \
 571         [list \
 572             "Build pr20103b" \
 573             "-O2 -flto -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 574             "-O2 -flto" \
 575             {dummy.c} {} "pr20103b" \
 576         ] \
 577         [list \
 578             "Build pr20103c" \
 579             "-O2 -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 580             "-O2" \
 581             {dummy.c} {} "pr20103c" \
 582         ] \
 583     ]
 584     pr20103 "-O2 -flto" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 585     pr20103 "-O2 -flto" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 586     pr20103 "-O2" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 587
 588     if { [at_least_gcc_version 4 9] } {
 589         run_cc_link_tests [list \
 590             [list \
 591                 "Build pr20103d" \
 592                 "-O2 -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 593                 "-O2" \
 594                 {dummy.c} {} "pr20103d" \
 595             ] \
 596         ]
 597         pr20103 "-O2" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 598     }
 599 }
 600
 601 restore_notify