ld/testsuite/ld-plugin/lto.exp

   1 # Expect script for ld-plugin LTO tests
   2 #   Copyright (C) 2011-2018 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 $CXX] == 0 } {
  23     return
  24 }
  25
  26 # These tests require plugin and LTO.
  27 if { ![check_plugin_api_available]
  28      || ![check_lto_available] } {
  29     return
  30 }
  31
  32 global INT128_CFLAGS
  33
  34 global CFLAGS
  35 global CXXFLAGS
  36 set saved_CFLAGS "$CFLAGS"
  37 set saved_CXXFLAGS "$CXXFLAGS"
  38 regsub -all "(\\-Wp,)?-D_FORTIFY_SOURCE=\[0-9\]+" $CFLAGS "" CFLAGS
  39 regsub -all "(\\-Wp,)?-D_FORTIFY_SOURCE=\[0-9\]+" $CXXFLAGS "" CXXFLAGS
  40
  41 proc restore_notify { } {
  42   global saved_CFLAGS
  43   global saved_CXXFLAGS
  44   set CFLAGS "$saved_CFLAGS"
  45   set CXXFLAGS "$saved_CXXFLAGS"
  46 }
  47
  48 set plugin_names {
  49     liblto_plugin.so
  50     liblto_plugin-0.dll
  51     cyglto_plugin-0.dll
  52 }
  53 set plug_opt ""
  54 foreach plug $plugin_names {
  55     set plug_so [run_host_cmd $CC "--print-prog-name $plug"]
  56     if { $plug_so eq $plug } then {
  57         set plug_so [run_host_cmd $CC "--print-file-name $plug"]
  58     }
  59     if { $plug_so ne $plug } then {
  60         set plug_opt "--plugin $plug_so"
  61         break
  62     }
  63 }
  64 set lto_fat ""
  65 set lto_no_fat ""
  66 if { [check_lto_fat_available] } {
  67   set lto_fat "-ffat-lto-objects"
  68   set lto_no_fat "-fno-fat-lto-objects"
  69 }
  70
  71 # Simple LTO tests and generate input files for complex LTO tests.
  72 set lto_link_tests [list \
  73   [list "LTO 1" \
  74    "-O2 -flto -fuse-linker-plugin" "-flto -fuse-linker-plugin" \
  75    {lto-1a.c lto-1b.c} {} "lto-1.exe"] \
  76   [list "Compile 2" \
  77    "" "-O2 -flto -fuse-linker-plugin" \
  78    {lto-2.c} {} ""] \
  79   [list "LTO 2" \
  80    "-static -O2 -flto -fuse-linker-plugin tmpdir/lto-2.o -lm" "" \
  81    {dummy.c} {} "lto-2.exe"] \
  82   [list "Compile 3a" \
  83    "" "-flto" \
  84    {lto-3a.c} {} ""] \
  85   [list "Compile 3c" \
  86    "" "-O2" \
  87    {lto-3c.c} {} ""] \
  88   [list "Build liblto-3.a" \
  89    "" "-flto $lto_fat" \
  90    {lto-3b.c} {} "liblto-3.a"] \
  91   [list "Compile 5a" \
  92    "" "-flto $lto_fat" \
  93    {lto-5a.c} {} ""] \
  94   [list "Compile 5b" \
  95    "" "-flto $lto_fat" \
  96    {lto-5b.c} {} ""] \
  97   [list "LTO 6" \
  98    "-O2 -flto -fuse-linker-plugin" "" \
  99    {lto-6.c} {} "lto-6.exe" "c"] \
 100   [list "Compile PR ld/12365" \
 101    "" "-flto -O2 $lto_fat" \
 102    {pr12365a.c pr12365b.c pr12365c.c} {} ""] \
 103   [list "Compile 9" \
 104    "" "-O2 -finline -flto" \
 105    {lto-9.cc} {} "" "c++"] \
 106   [list "Compile 11a" \
 107    "" "-O -flto" \
 108    {lto-11a.c} {} ""] \
 109   [list "Compile 11b" \
 110    "" "-O -flto" \
 111    {lto-11b.c} {} ""] \
 112   [list "Compile 11c" \
 113    "" "-O" \
 114    {lto-11c.c} {} ""] \
 115   [list "Build liblto-12.a" \
 116    "$plug_opt" "-O2 -flto" \
 117    {lto-12c.c} {} "liblto-12.a"] \
 118   [list "Compile 12" \
 119    "" "-O2 -flto" \
 120    {lto-12a.c lto-12b.c} {} ""] \
 121   [list "Compile 13" \
 122    "" "-O2 -flto" \
 123    {lto-13a.c lto-13b.c} {} ""] \
 124   [list "Build liblto-13.a" \
 125    "" "-O2" \
 126    {lto-13c.c} {} "liblto-13.a"] \
 127   [list "Compile 14a" \
 128    "" "-flto" \
 129    {lto-14a.c lto-14b.c} {} ""] \
 130   [list "Build liblto-14.a" \
 131    "$plug_opt" "-flto" \
 132    {lto-14c.c} {} "liblto-14.a"] \
 133   [list "Compile 15a" \
 134    "" "-flto" \
 135    {lto-15a.c} {} ""] \
 136   [list "Build liblto-15.a" \
 137    "$plug_opt" "-flto" \
 138    {lto-15b.c} {} "liblto-15.a"] \
 139   [list "PR ld/12696" \
 140    "-O2 -flto -fuse-linker-plugin -r -nostdlib" "-O2 -flto" \
 141    {pr12696-1.cc} {} "pr12696-1r.o" "c++"] \
 142   [list "Compile PR ld/12758" \
 143    "" "" \
 144    {pr12758a.s} {} ""] \
 145   [list "Build libpr12758.a" \
 146    "" "-flto -O2 $lto_fat" \
 147    {pr12758b.c} {} "libpr12758.a"] \
 148   [list "PR ld/12758" \
 149    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12758a.o -Wl,--start-group tmpdir/libpr12758.a -Wl,--end-group" "" \
 150    {dummy.c} {} "pr12758.exe"] \
 151   [list "Compile PR ld/12760" \
 152    "" "-g -O0" \
 153    {pr12760a.c} {} ""] \
 154   [list "Build libpr12760.a" \
 155    "" "-flto -O2 $lto_fat" \
 156    {pr12760b.c} {} "libpr12760.a"] \
 157   [list "PR ld/12760" \
 158    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12760a.o -Wl,--start-group tmpdir/libpr12760.a -Wl,--end-group" "" \
 159    {dummy.c} {{warning "pr12760a.c:6: warning: Bad \\.?bar"}} \
 160    "pr12760.exe" "c"] \
 161   [list "Build libpr13183.a" \
 162    "-T" "-flto -O2 $lto_fat" \
 163    {pr13183a.c} {} "libpr13183.a"] \
 164   [list "Compile PR ld/13183" \
 165    "" "-flto -O2" \
 166    {pr13183b.c} {} ""] \
 167   [list "Compile PR ld/13201" \
 168    "" "-flto -O2" \
 169    {pr13201.c} {} ""] \
 170   [list "PR ld/13287" \
 171    "-flto -fuse-linker-plugin -Wl,--as-needed" "-flto" \
 172    {pr13287.cc} {} "pr13287.exe" "c++"] \
 173   [list "PR ld/15323 (1)" \
 174    "" "-O2" \
 175    {pr15323a.c} {} "" "c"] \
 176   [list "PR ld/15323 (2)" \
 177    "-O2 -flto -r -nostdlib" "-O2 -flto" \
 178    {pr15323a.c} {} "pr15323a-r.o" "c"] \
 179   [list "Compile(1) PR ld/pr16846" \
 180    "" "-flto" \
 181    {pr16846a.c pr16846b.c} {} ""] \
 182   [list "Compile(2) PR ld/pr16846" \
 183    "" "" \
 184    {pr16846c.c} {} ""] \
 185   [list "PR ld/pr16846(1)" \
 186    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846b.o tmpdir/pr16846c.o" "" \
 187    {dummy.c} {} "pr16846a.exe"] \
 188   [list "PR ld/pr16846(2)" \
 189    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846c.o tmpdir/pr16846b.o" "" \
 190    {dummy.c} {} "pr16846b.exe"] \
 191   [list "PR ld/19317 (1)" \
 192    "$plug_opt" "-flto $lto_no_fat" \
 193    {pr19317.c} {} "libpr19317.a"] \
 194   [list "Build pr20276a.o" \
 195    "" "-fno-lto" \
 196    {pr20276a.c}] \
 197   [list "Build pr20276b.o" \
 198    "$plug_opt" "-flto $lto_no_fat" \
 199    {pr20276b.c}] \
 200   [list "Build pr20267a.o" \
 201    "" "" \
 202    {pr20267a.c}] \
 203   [list "Build libpr20267a.a" \
 204    "$plug_opt" "-flto $lto_fat" \
 205    {pr20267b.c} {} "libpr20267a.a"] \
 206   [list "Build libpr20267b.a" \
 207    "$plug_opt" "-flto $lto_no_fat" \
 208    {pr20267b.c} {} "libpr20267b.a"] \
 209   [list "Build pr20321" \
 210    "-flto -Wl,-plugin,$plug_so" "-flto" \
 211    {pr20321.c} {{warning ".*: duplicated plugin"}} \
 212    "pr20321" "c"] \
 213   [list "Build pr22502a.o" \
 214    "" "" \
 215    {pr22502a.c}] \
 216   [list "Build pr22502b.o" \
 217    "$plug_opt" "-flto $lto_no_fat" \
 218    {pr22502b.c}] \
 219   [list "Build pr22751.a" \
 220    "$plug_opt" "-flto $lto_no_fat $INT128_CFLAGS" \
 221    {pr22751.c} {} "pr22751.a"] \
 222 ]
 223
 224 if { [at_least_gcc_version 4 7] } {
 225     set lto_link_tests [concat $lto_link_tests [list \
 226       [list "Compile PR ld/12942 (1)" \
 227        "" "-flto -O2" \
 228        {pr12942a.cc pr12942c.cc} {} "" "c++"] \
 229       [list "Compile PR ld/12942 (2)" \
 230        "" "-O0" \
 231        {pr12942b.cc} {} "" "c++"] \
 232     ]]
 233 }
 234
 235 set lto_compile_elf_tests [list \
 236   [list "Compile 7" \
 237    "" "-flto -O2" \
 238    {lto-7a.c lto-7b.c lto-7c.c} {} ""] \
 239   [list "Compile 8a" \
 240    "" "-O2" \
 241    {lto-8a.c} {} ""] \
 242   [list "Compile 8b" \
 243    "" "-flto -O2" \
 244    {lto-8b.c} {} ""] \
 245   [list "PR ld/23309" \
 246    "-O2 -flto -fuse-linker-plugin -fvisibility=hidden -ffunction-sections -Wl,--gc-sections,-u,KeepMe" \
 247    "-O2 -flto -fuse-linker-plugin -fvisibility=hidden -ffunction-sections" \
 248    {pr23309.c} {{"nm" {} "pr23309.d"}} "pr23309.exe" "c"] \
 249 ]
 250
 251 # Generate input files for complex LTO tests for ELF.
 252 set lto_link_elf_tests [list \
 253   [list "Build liblto-7.so" \
 254    "-shared" "-O2 -fpic" \
 255    {lto-7d.c} {} "liblto-7.so" "c"] \
 256   [list "Build liblto-17a.so" \
 257    "-shared -O2 -fpic -flto -fuse-linker-plugin" "-O2 -fpic -flto" \
 258    {lto-17a.c} {{"nm" {} "lto-17a.d"}} "liblto-17a.so" "c"] \
 259   [list "Build liblto-17b.so 1" \
 260    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 261    {lto-17b.c} {{"nm" {} "lto-17b-1.d"}} "liblto-17b.so"] \
 262   [list "Build liblto-17b.so 2" \
 263    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 264    {lto-17b.c} {{"nm" {} "lto-17b-2.d"}} "liblto-17b.so"] \
 265   [list "PR ld/12982" \
 266    "-O2 -flto -fuse-linker-plugin" "-O2 -flto" \
 267    {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"] \
 268   [list "PR ld/12975" \
 269    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib -Wl,-version-script,pr12975.t" "-O2 -flto" \
 270    {pr12975.c} {{"readelf" {-s --wide} "pr12975.d"}} "pr12975.so" "c"] \
 271   [list "PR ld/13229" \
 272    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -finline -fno-early-inlining -flto" \
 273    {pr13229.cc} {{"readelf" {-s --wide} "pr13229.d"}} "pr13229.so" "c++"] \
 274   [list "PR ld/13244" \
 275    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -fno-early-inlining -flto" \
 276    {pr13244.c} {{"readelf" {-s --wide} "pr13244.d"}} "pr13244.so" "c"] \
 277   [list "Build libpr15146a.a" \
 278    "$plug_opt" "-flto -O2" \
 279    {pr15146a.c} {} "lib15146a.a"] \
 280   [list "Build pr15146b.so" \
 281    "-shared" "-O2 -fpic" \
 282    {pr15146b.c} {} "pr15146b.so" "c"] \
 283   [list "Build pr15146c.so" \
 284    "-shared -Wl,--no-as-needed tmpdir/pr15146b.so" "-O2 -fpic" \
 285    {pr15146c.c} {} "pr15146c.so" "c"] \
 286   [list "PR ld/15146 (1)" \
 287    "-O2 -flto -fuse-linker-plugin -Wl,-rpath-link,. -Wl,--no-copy-dt-needed-entries -Wl,--no-as-needed tmpdir/pr15146a.o tmpdir/pr15146c.so" "" \
 288    {dummy.c} {{"readelf" {-d} "pr15146.d"}} "pr15146a.exe"] \
 289   [list "Build libpr15146d.a" \
 290    "$plug_opt" "-flto -O2" \
 291    {pr15146d.c} {} "lib15146d.a"] \
 292   [list "Build libpr16746a.a" \
 293    "" "" \
 294    {pr16746a.c pr16746b.c} {} "lib15146a.a"] \
 295   [list "Build libpr16746b.a" \
 296    "$plug_opt" "-O2 -flto" \
 297    {pr16746c.c pr16746d.c} {} "lib15146b.a"] \
 298   [list "PR ld/16746 (1)" \
 299    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746a.o tmpdir/pr16746c.o" "-O2 -flto" \
 300    {dummy.c} {} "pr16746a.exe"] \
 301   [list "PR ld/16746 (2)" \
 302    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746c.o tmpdir/pr16746a.o" "-O2 -flto" \
 303    {dummy.c} {} "pr16746b.exe"] \
 304   [list "Build pr21382a.o" \
 305    "" "-O2 -flto" \
 306    {pr21382a.c} {} "" "c"] \
 307   [list "Build pr21382.so" \
 308    "-shared" "-O2 -fpic" \
 309    {pr21382b.c} {} "pr21382.so" "c"] \
 310   [list {Build pr22220lib.so} \
 311    {-shared -Wl,--version-script=pr22220lib.ver} {-fPIC} \
 312    {pr22220lib.cc} {} {pr22220lib.so} {c++}] \
 313   [list {Build pr22220main.o} \
 314    {} {-flto} \
 315    {pr22220main.cc} {} {} {c++}] \
 316 ]
 317
 318 # PR 14918 checks that libgcc is not spuriously included in a shared link of
 319 # an empty program.  The ARM crt1.o startup code however calls __libc_csu_init
 320 # in /usr/lib/libc_nonshared.a(elf-init.oS).  This in turn needs
 321 # __aeabi_unwind_cpp_pr0@@GCC_3.5 which is provided by libgcc_s.so.1, so the
 322 # test fails.  Hence this code to skip the test.
 323 if { ! [istarget "arm*-*-*"] } {
 324     set lto_link_elf_tests [concat $lto_link_elf_tests [list \
 325   [list "PR ld/14918" \
 326    "-flto" "-flto" \
 327    {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"] \
 328   ]]
 329 }
 330
 331 # Check final symbols in executables.
 332 set lto_link_symbol_tests [list \
 333   [list "LTO 3 symbol" \
 334    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 335    {dummy.c} {{"nm" {} "lto-3.d"}} "lto-3.exe" "c"] \
 336   [list "LTO 5 symbol" \
 337    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 338    {dummy.c} {{"nm" {} "lto-5.d"}} "lto-5.exe" "c"] \
 339   [list "LTO 9 symbol" \
 340    "-O2 -flto -fuse-linker-plugin tmpdir/lto-9.o" "" \
 341    {dummy.c} {{"nm" {-C} "lto-9.d"}} "lto-9.exe" "c++"] \
 342   [list "LTO 16a symbol" \
 343    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin" "-flto" \
 344    {lto-16a.c} {{"nm" {} "lto-16a.d"}} "lto-16.exe" "c"] \
 345   [list "LTO 16b symbol" \
 346    "-O2 -Wl,-e,foo -u bar -nostdlib -flto -fuse-linker-plugin" "-flto" \
 347    {lto-16a.c lto-16b.c} {{"nm" {} "lto-16b.d"}} "lto-16b.exe" "c"] \
 348   [list "PR ld/13183" \
 349    "-O2 -flto -fuse-linker-plugin tmpdir/pr13183b.o tmpdir/libpr13183.a" "" \
 350    {dummy.c} {{"nm" {} "pr13183.d"}} "pr13183.exe" "c"] \
 351 ]
 352
 353 # LTO run-time tests.
 354 set lto_run_tests [list \
 355   [list "LTO 3a" \
 356    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 357    {dummy.c} "lto-3b.exe" "lto-3.out" "" "c"] \
 358   [list "LTO 3b" \
 359    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/lto-3.o" "" \
 360    {dummy.c} "lto-3c.exe" "lto-3.out" "" "c"] \
 361   [list "LTO 3c" \
 362    "-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" "" \
 363    {dummy.c} "lto-3d.exe" "lto-3.out" "" "c"] \
 364   [list "LTO 5" \
 365    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 366    {dummy.c} "lto-5.exe" "lto-5.out" "" "c"] \
 367   [list "LTO 11" \
 368    "-O -flto -fuse-linker-plugin tmpdir/liblto-11.a" "" \
 369    {dummy.c} "lto-11.exe" "lto-11.out" "" "c"] \
 370   [list "LTO 12a" \
 371    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/liblto-12.a tmpdir/lto-12b.o" "" \
 372    {dummy.c} "lto-12a.exe" "lto-12.out" "" "c"] \
 373   [list "LTO 12b" \
 374    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/lto-12b.o tmpdir/liblto-12.a" "" \
 375    {dummy.c} "lto-12b.exe" "lto-12.out" "" "c"] \
 376   [list "LTO 13" \
 377    "-O -flto -fuse-linker-plugin tmpdir/lto-13a.o tmpdir/liblto-13.a tmpdir/lto-13b.o" "" \
 378    {dummy.c} "lto-13.exe" "lto-13.out" "" "c"] \
 379   [list "LTO 14" \
 380    "-O2 -flto -fuse-linker-plugin tmpdir/lto-14a.o -Wl,--whole-archive tmpdir/liblto-14.a -Wl,--no-whole-archive tmpdir/lto-14b.o" "" \
 381    {dummy.c} "lto-14.exe" "lto-14.out" "" "c"] \
 382   [list "LTO 15" \
 383    "-O2 -flto -fuse-linker-plugin -Wl,--start-group tmpdir/liblto-15.a tmpdir/lto-15a.o -Wl,--end-group" "" \
 384    {dummy.c} "lto-15.exe" "lto-15.out" "" "c"] \
 385   [list "PR ld/13066" \
 386    "-O2 -flto -fuse-linker-plugin" "" \
 387    {pr13066.cc} "pr13066.exe" "pr13066.out" "" "c++"] \
 388   [list "PR ld/13201" \
 389    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr13201.o -lm" "" \
 390    {dummy.c} "pr13201.exe" "pr13201.out" "" "c"] \
 391   [list "PR ld/15323 (3)" \
 392    "-O2 -flto -fuse-linker-plugin tmpdir/pr15323a.o" "" \
 393    {pr15323b.c} "pr15323.exe" "pr15323.out" "-flto -O2" "c"] \
 394   [list "PR ld/15323 (4)" \
 395    "-O2 -flto tmpdir/pr15323a-r.o" "" \
 396    {dummy.c} "pr15323a.exe" "pr15323.out" "-flto -O2" "c"] \
 397   [list "PR ld/19317 (3)" \
 398    "-O2 -flto tmpdir/pr19317-r.o" "" \
 399    {dummy.c} "pr19317.exe" "pr19317.out" "-flto -O2" "c"] \
 400   [list "Run pr20276" \
 401    "-O2 -flto tmpdir/pr20276a.o tmpdir/pr20276b.o" "" \
 402    {dummy.c} "pr20276" "pass.out" "-flto -O2" "c"] \
 403   [list "Run pr20267a" \
 404    "-O2 -flto tmpdir/pr20267a.o tmpdir/libpr20267a.a" "" \
 405    {dummy.c} "pr20267a" "pass.out" "-flto -O2" "c"] \
 406   [list "Run pr20267b" \
 407    "-O2 -flto tmpdir/pr20267a.o tmpdir/libpr20267b.a" "" \
 408    {dummy.c} "pr20267b" "pass.out" "-flto -O2" "c"] \
 409   [list "Run pr22502" \
 410    "-O2 -flto tmpdir/pr22502a.o tmpdir/pr22502b.o" "" \
 411    {dummy.c} "pr20267" "pass.out" "-flto -O2" "c"] \
 412   [list "Run pr22751" \
 413    "-O2 -flto" "" \
 414    {dummy.c} "pr22751" "pass.out" "-flto -O2" "c" "" \
 415    "-Wl,--whole-archive tmpdir/pr22751.a -Wl,--no-whole-archive"] \
 416 ]
 417
 418 if { [at_least_gcc_version 4 7] } {
 419     set lto_run_tests [concat $lto_run_tests [list \
 420       [list "PR ld/12942 (1)" \
 421        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942b.o" "" \
 422        {dummy.c} "pr12942a.exe" "pr12942.out" "" "c++"] \
 423       [list "PR ld/12942 (2)" \
 424        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942c.o" "" \
 425        {dummy.c} "pr12942c.exe" "pr12942.out" "" "c++"] \
 426     ]]
 427 }
 428
 429 # LTO run-time tests for ELF which require shared library support.
 430 set lto_run_elf_shared_tests [list \
 431   [list "LTO 7" \
 432    "-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" "" \
 433    {dummy.c} "lto-7.exe" "lto-7.out" "" "c"] \
 434   [list "Run pr21382" \
 435    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr21382a.o tmpdir/pr21382.so" "" \
 436    {dummy.c} "pr21382.exe" "pass.out" "" "c"] \
 437   [list {pr22220a} \
 438    {-flto -fuse-linker-plugin tmpdir/pr22220main.o tmpdir/pr22220lib.so} {} \
 439    {dummy.c} {pr22220a.exe} {pass.out} {} {c++}] \
 440   [list {pr22220b} \
 441    {-flto -fuse-linker-plugin -Wl,--no-as-needed tmpdir/pr22220lib.so tmpdir/pr22220main.o} {} \
 442    {dummy.c} {pr22220b.exe} {pass.out} {} {c++}] \
 443 ]
 444
 445 # LTO run-time tests for ELF
 446 set lto_run_elf_tests [list \
 447   [list "LTO 8" \
 448    "-O2 -flto -fuse-linker-plugin tmpdir/lto-8b.o tmpdir/lto-8a.o" "" \
 449    {dummy.c} "lto-8.exe" "lto-8.out" "" "c"] \
 450   [list "LTO TLS IE" \
 451    "-O2 -flto -fuse-linker-plugin" "" \
 452    {run-ie.c} "run-ie.exe" "run-ie.out" "" "c"] \
 453 ]
 454
 455 run_cc_link_tests $lto_link_tests
 456
 457 # These compilation tests generate intermediate object files which will be used
 458 # by some elf tests besides shared libs tests.  So, always compile them.
 459 run_cc_link_tests $lto_compile_elf_tests
 460
 461 # Restrict these to ELF targets that support shared libs and PIC.
 462 if { [is_elf_format] && [check_lto_shared_available] } {
 463     run_cc_link_tests $lto_link_elf_tests
 464     set testname "PR ld/15146 (2)"
 465     set exec_output [run_host_cmd "$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"]
 466     if { [ regexp "undefined reference to symbol '\\.?xxx'" $exec_output ] } {
 467         pass $testname
 468     } {
 469         fail $testname
 470     }
 471     set testname "PR ld/16746 (3)"
 472     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746b.o tmpdir/pr16746d.o"]
 473     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 474         pass $testname
 475     } {
 476         fail $testname
 477     }
 478     set testname "PR ld/16746 (4)"
 479     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746d.o tmpdir/pr16746b.o"]
 480     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 481         pass $testname
 482     } {
 483         fail $testname
 484     }
 485 }
 486
 487 set testname "Build liblto-11.a"
 488 remote_file host delete "tmpdir/liblto-11.a"
 489 set catch_output [run_host_cmd "$ar" "rc $plug_opt tmpdir/liblto-11.a tmpdir/lto-11a.o tmpdir/lto-11b.o tmpdir/lto-11c.o"]
 490 if {![string match "" $catch_output]} {
 491     unresolved $testname
 492     restore_notify
 493     return
 494 }
 495
 496 if { [at_least_gcc_version 4 7] } {
 497     # Check expected LTO linker errors.
 498     # Since the asm symbol name hack in pr12365b.c doesn't work on all
 499     # targets, run PR ld/12365 tests only for known targets.
 500     if { ([istarget "i?86-*-elf*"]
 501            || [istarget "i?86-*-linux*"]
 502            || [istarget "i?86-*-gnu*"]
 503            || [istarget "i?86-*-nacl*"]
 504            || [istarget "x86_64-*-nacl*"]
 505            || [istarget "x86_64-*-linux*"]
 506            || [istarget "amd64-*-linux*"]) } {
 507         set testname "PR ld/12365"
 508         set exec_output [run_host_cmd "$CC" "-O2 -flto -flto-partition=none -fuse-linker-plugin -o tmpdir/pr12365 tmpdir/pr12365a.o tmpdir/pr12365b.o tmpdir/pr12365c.o"]
 509         if { [ regexp "undefined reference to `my_bcopy'" $exec_output ] } {
 510             # Linker should catch the reference to undefined `my_bcopy'
 511             # error caused by a GCC bug.
 512             pass $testname
 513         } elseif { [ string match "" $exec_output ] } {
 514             global READELF
 515             set exec_output [run_host_cmd "$READELF" "-s -W tmpdir/pr12365"]
 516             if { [ regexp "my_bcopy" $exec_output ] } {
 517                 # Verify that there is no `my_bcopy' symbol in executable.
 518                 fail $testname
 519             } {
 520                 pass $testname
 521             }
 522         } {
 523             fail $testname
 524         }
 525
 526         run_cc_link_tests [list \
 527             [list \
 528                 "Build pr22721a.so" \
 529                 "-shared -nostdlib -nostartfiles -Wl,-version-script,pr22721.t" \
 530                 "" \
 531                 {pr22721a.s} \
 532                 {} \
 533                 "pr22721a.so" \
 534             ] \
 535             [list \
 536                 "Build pr22721b.o" \
 537                 "$plug_opt" \
 538                 "-O2 -fPIC -flto $lto_no_fat" \
 539                 {pr22721b.c} \
 540             ] \
 541             [list \
 542                 "Build PR ld/pr22721" \
 543                 "-O2 -flto -fuse-linker-plugin -nostdlib -nostartfiles \
 544                 -Wl,-e,_start tmpdir/pr22721b.o tmpdir/pr22721a.so" \
 545                 "" \
 546                 {dummy.c} \
 547                 {} \
 548                 "pr22721.exe"
 549             ] \
 550         ]
 551     }
 552     set testname "PR ld/12942 (3)"
 553     set exec_output [run_host_cmd "$CXX" "-O2 -flto -fuse-linker-plugin tmpdir/pr12942b.o tmpdir/pr12942a.o"]
 554     if { [ regexp "undefined reference to `\\.?link_error\\(\\)'" $exec_output ] } {
 555         pass $testname
 556     } {
 557         fail $testname
 558     }
 559 }
 560
 561 # Run "ld -r" to generate inputs for complex LTO tests.
 562 run_dump_test "lto-3r"
 563 remote_exec host "mv" "tmpdir/dump tmpdir/lto-3.o"
 564 run_dump_test "lto-5r"
 565 remote_exec host "mv" "tmpdir/dump tmpdir/lto-5.o"
 566
 567 run_cc_link_tests $lto_link_symbol_tests
 568
 569 run_ld_link_tests [list \
 570   [list "PR ld/19317 (2)" \
 571    "-r tmpdir/pr19317.o" "" "" \
 572    {dummy.s} {} "pr19317-r.o"] \
 573 ]
 574
 575 run_ld_link_exec_tests $lto_run_tests
 576
 577 if { [is_elf_format] } {
 578     run_ld_link_exec_tests $lto_run_elf_tests
 579
 580     # Note - it is not guaranteed that the ordering of symbols in the dynamic
 581     # symbol table will match the ordering of the symbols specified by the
 582     # --dynamic-list command line option.
 583     #
 584     # For PR22983 we want to make sure that all four symbols specified in
 585     # pr222983.t are present in the output, but a simple sequences of regexps
 586     # will not work as we do not know the order of the symbols.  (Readelf
 587     # does not have a symbol sorting option and the run_cc_list_tests proc
 588     # does not allow for the output of the dump program to piped into `sort`).
 589     #
 590     # So instead we run readelf four times, each time checking for the
 591     # presence of a specific symbol from the pr22983.t file.
 592     run_cc_link_tests [list \
 593         [list \
 594             "Build pr22983" \
 595             "-Wl,--dynamic-list,pr22983.t" \
 596             "-flto" \
 597              {pr22983a.c pr22983b.c} \
 598             {{readelf {--dyn-syms --wide} pr22983.1.d} \
 599              {readelf {--dyn-syms --wide} pr22983.2.d} \
 600              {readelf {--dyn-syms --wide} pr22983.3.d} \
 601              {readelf {--dyn-syms --wide} pr22983.4.d}} \
 602             "pr22983" \
 603         ] \
 604     ]
 605 }
 606
 607 if { [is_elf_format] && [check_lto_shared_available] } {
 608     run_ld_link_exec_tests $lto_run_elf_shared_tests
 609 }
 610
 611 proc pr20103 {cflags libs} {
 612     global CC
 613
 614     set testname "PR ld/20103 ($cflags $libs)"
 615     set exec_output [run_host_cmd "$CC" "$cflags $libs"]
 616     if { [ regexp "undefined reference to `\\.?dead'" $exec_output ] } {
 617         pass "$testname (1)"
 618     } {
 619         fail "$testname (1)"
 620     }
 621     if { [ regexp "plugin needed to handle lto object" $exec_output ] } {
 622         fail "$testname (2)"
 623     } {
 624         pass "$testname (2)"
 625     }
 626 }
 627
 628 if { [check_lto_fat_available] } {
 629     run_cc_link_tests [list \
 630         [list \
 631             "Build fatpr20103a.a" \
 632             "$plug_opt" "-flto -ffat-lto-objects" \
 633             {pr20103a.c} {} "fatpr20103a.a"
 634         ] \
 635         [list \
 636             "Build fatpr20103b.a" \
 637             "$plug_opt" "-flto -ffat-lto-objects" \
 638             {pr20103b.c} {} "fatpr20103b.a"
 639         ] \
 640         [list \
 641             "Build fatpr20103c.a" \
 642             "$plug_opt" "-flto -ffat-lto-objects" \
 643             {pr20103c.c} {} "fatpr20103c.a" \
 644         ] \
 645         [list \
 646             "Build thinpr20103a.a" \
 647             "$plug_opt" "-flto -fno-fat-lto-objects" \
 648             {pr20103a.c} {} "thinpr20103a.a"
 649         ] \
 650         [list \
 651             "Build thinpr20103b.a" \
 652             "$plug_opt" "-flto -fno-fat-lto-objects" \
 653             {pr20103b.c} {} "thinpr20103b.a"
 654         ] \
 655         [list \
 656             "Build thinpr20103c.a" \
 657             "$plug_opt" "-flto -fno-fat-lto-objects" \
 658             {pr20103c.c} {} "thinpr20103c.a" \
 659         ] \
 660         [list \
 661             "Build pr20103a" \
 662             "-O2 -flto -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 663             "-O2 -flto" \
 664             {dummy.c} {} "pr20103a" \
 665         ] \
 666         [list \
 667             "Build pr20103b" \
 668             "-O2 -flto -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 669             "-O2 -flto" \
 670             {dummy.c} {} "pr20103b" \
 671         ] \
 672         [list \
 673             "Build pr20103c" \
 674             "-O2 -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 675             "-O2" \
 676             {dummy.c} {} "pr20103c" \
 677         ] \
 678     ]
 679     pr20103 "-O2 -flto" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 680     pr20103 "-O2 -flto" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 681     pr20103 "-O2" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 682
 683     if { [at_least_gcc_version 4 9] } {
 684         run_cc_link_tests [list \
 685             [list \
 686                 "Build pr20103d" \
 687                 "-O2 -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 688                 "-O2" \
 689                 {dummy.c} {} "pr20103d" \
 690             ] \
 691         ]
 692         pr20103 "-O2" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 693     }
 694 }
 695
 696 restore_notify