ld/testsuite/ld-plugin/lto.exp

   1 # Expect script for ld-plugin LTO tests
   2 #   Copyright (C) 2011-2020 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 { ![check_compiler_available] || [which $CXX] == 0 } {
  23     return
  24 }
  25
  26 # These tests require plugin and LTO.
  27 if { ![check_plugin_api_available]
  28      || ![check_lto_available] } {
  29     return
  30 }
  31
  32 set saved_CFLAGS "$CFLAGS"
  33 set saved_CXXFLAGS "$CXXFLAGS"
  34 regsub -all "(\\-Wp,)?-D_FORTIFY_SOURCE=\[0-9\]+" $CFLAGS "" CFLAGS
  35 regsub -all "(\\-Wp,)?-D_FORTIFY_SOURCE=\[0-9\]+" $CXXFLAGS "" CXXFLAGS
  36
  37 proc restore_notify { } {
  38   global saved_CFLAGS
  39   global saved_CXXFLAGS
  40   set CFLAGS "$saved_CFLAGS"
  41   set CXXFLAGS "$saved_CXXFLAGS"
  42 }
  43
  44 set plugin_names {
  45     liblto_plugin.so
  46     liblto_plugin-0.dll
  47     cyglto_plugin-0.dll
  48 }
  49 set plug_opt ""
  50 foreach plug $plugin_names {
  51     set plug_so [run_host_cmd $CC "--print-prog-name $plug"]
  52     if { $plug_so eq $plug } then {
  53         set plug_so [run_host_cmd $CC "--print-file-name $plug"]
  54     }
  55     if { $plug_so ne $plug } then {
  56         set plug_opt "--plugin $plug_so"
  57         break
  58     }
  59 }
  60 set lto_fat ""
  61 set lto_no_fat ""
  62 if { [check_lto_fat_available] } {
  63   set lto_fat "-ffat-lto-objects"
  64   set lto_no_fat "-fno-fat-lto-objects"
  65 }
  66
  67 # Simple LTO tests and generate input files for complex LTO tests.
  68 set lto_link_tests [list \
  69   [list "LTO 1" \
  70    "-O2 -flto -fuse-linker-plugin" "-flto -fuse-linker-plugin" \
  71    {lto-1a.c lto-1b.c} {} "lto-1.exe"] \
  72   [list "Compile 2" \
  73    "" "-O2 -flto -fuse-linker-plugin $NOSANTIZE_CFLAGS" \
  74    {lto-2.c} {} ""] \
  75   [list "LTO 2" \
  76    "-static -O2 -flto -fuse-linker-plugin tmpdir/lto-2.o -lm" \
  77    "$NOSANTIZE_CFLAGS" \
  78    {dummy.c} {} "lto-2.exe"] \
  79   [list "Compile 3a" \
  80    "" "-flto" \
  81    {lto-3a.c} {} ""] \
  82   [list "Compile 3c" \
  83    "" "-O2" \
  84    {lto-3c.c} {} ""] \
  85   [list "Build liblto-3.a" \
  86    "" "-flto $lto_fat" \
  87    {lto-3b.c} {} "liblto-3.a"] \
  88   [list "Compile 5a" \
  89    "" "-flto $lto_fat" \
  90    {lto-5a.c} {} ""] \
  91   [list "Compile 5b" \
  92    "" "-flto $lto_fat" \
  93    {lto-5b.c} {} ""] \
  94   [list "Compile PR ld/12365" \
  95    "" "-flto -O2 $lto_fat" \
  96    {pr12365a.c pr12365b.c pr12365c.c} {} ""] \
  97   [list "Compile 9" \
  98    "" "-O2 -finline -flto" \
  99    {lto-9.cc} {} "" "c++"] \
 100   [list "Compile 11a" \
 101    "" "-O -flto" \
 102    {lto-11a.c} {} ""] \
 103   [list "Compile 11b" \
 104    "" "-O -flto" \
 105    {lto-11b.c} {} ""] \
 106   [list "Compile 11c" \
 107    "" "-O" \
 108    {lto-11c.c} {} ""] \
 109   [list "Build liblto-12.a" \
 110    "$plug_opt" "-O2 -flto" \
 111    {lto-12c.c} {} "liblto-12.a"] \
 112   [list "Compile 12" \
 113    "" "-O2 -flto" \
 114    {lto-12a.c lto-12b.c} {} ""] \
 115   [list "Compile 13" \
 116    "" "-O2 -flto" \
 117    {lto-13a.c lto-13b.c} {} ""] \
 118   [list "Build liblto-13.a" \
 119    "" "-O2" \
 120    {lto-13c.c} {} "liblto-13.a"] \
 121   [list "Compile 14a" \
 122    "" "-flto" \
 123    {lto-14a.c lto-14b.c} {} ""] \
 124   [list "Build liblto-14.a" \
 125    "$plug_opt" "-flto" \
 126    {lto-14c.c} {} "liblto-14.a"] \
 127   [list "Compile 15a" \
 128    "" "-flto" \
 129    {lto-15a.c} {} ""] \
 130   [list "Build liblto-15.a" \
 131    "$plug_opt" "-flto" \
 132    {lto-15b.c} {} "liblto-15.a"] \
 133   [list "PR ld/12696" \
 134    "-O2 -flto -fuse-linker-plugin -r -nostdlib" "-O2 -flto" \
 135    {pr12696-1.cc} {} "pr12696-1r.o" "c++"] \
 136   [list "Compile PR ld/12758" \
 137    "" "" \
 138    {pr12758a.s} {} ""] \
 139   [list "Build libpr12758.a" \
 140    "" "-flto -O2 $lto_fat $NOSANTIZE_CFLAGS" \
 141    {pr12758b.c} {} "libpr12758.a"] \
 142   [list "PR ld/12758" \
 143    "$NOPIE_LDFLAGS -O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12758a.o -Wl,--start-group tmpdir/libpr12758.a -Wl,--end-group" \
 144    "$NOSANTIZE_CFLAGS" \
 145    {dummy.c} {} "pr12758.exe"] \
 146   [list "Build libpr13183.a" \
 147    "-T" "-flto -O2 $lto_fat" \
 148    {pr13183a.c} {} "libpr13183.a"] \
 149   [list "Compile PR ld/13183" \
 150    "" "-flto -O2" \
 151    {pr13183b.c} {} ""] \
 152   [list "Compile PR ld/13201" \
 153    "" "-flto -O2" \
 154    {pr13201.c} {} ""] \
 155   [list "PR ld/13287" \
 156    "-flto -fuse-linker-plugin -Wl,--as-needed" "-flto" \
 157    {pr13287.cc} {} "pr13287.exe" "c++"] \
 158   [list "PR ld/15323 (1)" \
 159    "" "-O2" \
 160    {pr15323a.c} {} "" "c"] \
 161   [list "PR ld/15323 (2)" \
 162    "-O2 -flto -r -nostdlib" "-O2 -flto" \
 163    {pr15323a.c} {} "pr15323a-r.o" "c"] \
 164   [list "Compile(1) PR ld/pr16846" \
 165    "" "-flto" \
 166    {pr16846a.c pr16846b.c} {} ""] \
 167   [list "Compile(2) PR ld/pr16846" \
 168    "" "" \
 169    {pr16846c.c} {} ""] \
 170   [list "PR ld/pr16846(1)" \
 171    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846b.o tmpdir/pr16846c.o" "" \
 172    {dummy.c} {} "pr16846a.exe"] \
 173   [list "PR ld/pr16846(2)" \
 174    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846c.o tmpdir/pr16846b.o" "" \
 175    {dummy.c} {} "pr16846b.exe"] \
 176   [list "PR ld/19317 (1)" \
 177    "$plug_opt" "-flto $lto_no_fat" \
 178    {pr19317.c} {} "libpr19317.a"] \
 179   [list "Build pr20276a.o" \
 180    "" "-fno-lto -fcommon" \
 181    {pr20276a.c}] \
 182   [list "Build pr20276b.o" \
 183    "$plug_opt" "-flto $lto_no_fat -fcommon" \
 184    {pr20276b.c}] \
 185   [list "Build pr20267a.o" \
 186    "" "-fcommon" \
 187    {pr20267a.c}] \
 188   [list "Build libpr20267a.a" \
 189    "$plug_opt" "-flto $lto_fat -fcommon" \
 190    {pr20267b.c} {} "libpr20267a.a"] \
 191   [list "Build libpr20267b.a" \
 192    "$plug_opt" "-flto $lto_no_fat -fcommon" \
 193    {pr20267b.c} {} "libpr20267b.a"] \
 194   [list "Build pr20321" \
 195    "-flto -Wl,-plugin,$plug_so" "-flto" \
 196    {pr20321.c} {{warning ".*: duplicated plugin"}} \
 197    "pr20321" "c"] \
 198   [list "Build pr22502a.o" \
 199    "" "" \
 200    {pr22502a.c}] \
 201   [list "Build pr22502b.o" \
 202    "$plug_opt" "-flto $lto_no_fat" \
 203    {pr22502b.c}] \
 204   [list "Build pr22751.a" \
 205    "$plug_opt" "-flto $lto_no_fat $INT128_CFLAGS" \
 206    {pr22751.c} {} "pr22751.a"] \
 207   [list "Build pr24406-2b.o" \
 208    "" "-O2 -fno-lto" \
 209    {pr24406-2b.c}] \
 210   [list "Build pr26163a.o" \
 211    "" "-O2 -fno-lto" \
 212    {pr26163a.c}] \
 213 ]
 214
 215 if { [at_least_gcc_version 10 0] } {
 216     set lto_link_tests [concat $lto_link_tests [list \
 217         [list "pr25355.o" \
 218          "" \
 219          "-flto -fno-common $lto_no_fat" \
 220          {pr25355.c} \
 221          [list [list "nm" "$plug_opt" "pr25355.d"]]] \
 222     ]]
 223 }
 224
 225 if { [at_least_gcc_version 4 7] } {
 226     set lto_link_tests [concat $lto_link_tests [list \
 227       [list "Compile PR ld/12942 (1)" \
 228        "" "-flto -O2" \
 229        {pr12942a.cc pr12942c.cc} {} "" "c++"] \
 230       [list "Compile PR ld/12942 (2)" \
 231        "" "-O0" \
 232        {pr12942b.cc} {} "" "c++"] \
 233     ]]
 234 }
 235
 236 set lto_compile_elf_tests [list \
 237   [list "Compile 7" \
 238    "" "-flto -O2" \
 239    {lto-7a.c lto-7b.c lto-7c.c} {} ""] \
 240   [list "Compile 8a" \
 241    "" "-O2" \
 242    {lto-8a.c} {} ""] \
 243   [list "Compile 8b" \
 244    "" "-flto -O2" \
 245    {lto-8b.c} {} ""] \
 246   [list "PR ld/23309" \
 247    "-O2 -flto -fuse-linker-plugin -fvisibility=hidden -ffunction-sections -Wl,--gc-sections,-u,KeepMe" \
 248    "-O2 -flto -fuse-linker-plugin -fvisibility=hidden -ffunction-sections" \
 249    {pr23309.c} {{"nm" {} "pr23309.d"}} "pr23309.exe" "c"] \
 250 ]
 251
 252 # Generate input files for complex LTO tests for ELF.
 253 set lto_link_elf_tests [list \
 254   [list "LTO 6" \
 255    "-O2 -flto -fuse-linker-plugin" "" \
 256    {lto-6.c} {} "lto-6.exe" "c"] \
 257   [list "Build liblto-7.so" \
 258    "-shared" "-O2 -fpic" \
 259    {lto-7d.c} {} "liblto-7.so" "c"] \
 260   [list "Build liblto-17a.so" \
 261    "-shared -O2 -fpic -flto -fuse-linker-plugin" "-O2 -fpic -flto" \
 262    {lto-17a.c} {{"nm" {} "lto-17a.d"}} "liblto-17a.so" "c"] \
 263   [list "Build liblto-17b.so 1" \
 264    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 265    {lto-17b.c} {{"nm" {} "lto-17b-1.d"}} "liblto-17b.so"] \
 266   [list "Build liblto-17b.so 2" \
 267    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 268    {lto-17b.c} {{"nm" {} "lto-17b-2.d"}} "liblto-17b.so"] \
 269   [list "Compile PR ld/12760" \
 270    "" "-g -O0" \
 271    {pr12760a.c} {} ""] \
 272   [list "Build libpr12760.a" \
 273    "" "-flto -O2 $lto_fat" \
 274    {pr12760b.c} {} "libpr12760.a"] \
 275   [list "PR ld/12760" \
 276    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12760a.o -Wl,--start-group tmpdir/libpr12760.a -Wl,--end-group" "" \
 277    {dummy.c} {{warning "pr12760a.c:6: warning: Bad \\.?bar"}} \
 278    "pr12760.exe" "c"] \
 279   [list "PR ld/12975" \
 280    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib -Wl,-version-script,pr12975.t" "-O2 -flto" \
 281    {pr12975.c} {{"readelf" {-s --wide} "pr12975.d"}} "pr12975.so" "c"] \
 282   [list "PR ld/13229" \
 283    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -finline -fno-early-inlining -flto" \
 284    {pr13229.cc} {{"readelf" {-s --wide} "pr13229.d"}} "pr13229.so" "c++"] \
 285   [list "PR ld/13244" \
 286    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -fno-early-inlining -flto" \
 287    {pr13244.c} {{"readelf" {-s --wide} "pr13244.d"}} "pr13244.so" "c"] \
 288   [list "Build libpr15146a.a" \
 289    "$plug_opt" "-flto -O2" \
 290    {pr15146a.c} {} "lib15146a.a"] \
 291   [list "Build pr15146b.so" \
 292    "-shared" "-O2 -fpic" \
 293    {pr15146b.c} {} "pr15146b.so" "c"] \
 294   [list "Build pr15146c.so" \
 295    "-shared -Wl,--no-as-needed tmpdir/pr15146b.so" "-O2 -fpic" \
 296    {pr15146c.c} {} "pr15146c.so" "c"] \
 297   [list "PR ld/15146 (1)" \
 298    "-O2 -flto -fuse-linker-plugin -Wl,-rpath-link,. -Wl,--no-copy-dt-needed-entries -Wl,--no-as-needed tmpdir/pr15146a.o tmpdir/pr15146c.so" "" \
 299    {dummy.c} {{"readelf" {-d} "pr15146.d"}} "pr15146a.exe"] \
 300   [list "Build libpr15146d.a" \
 301    "$plug_opt" "-flto -O2" \
 302    {pr15146d.c} {} "lib15146d.a"] \
 303   [list "Build libpr16746a.a" \
 304    "" "" \
 305    {pr16746a.c pr16746b.c} {} "lib15146a.a"] \
 306   [list "Build libpr16746b.a" \
 307    "$plug_opt" "-O2 -flto" \
 308    {pr16746c.c pr16746d.c} {} "lib15146b.a"] \
 309   [list "PR ld/16746 (1)" \
 310    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746a.o tmpdir/pr16746c.o" "-O2 -flto" \
 311    {dummy.c} {} "pr16746a.exe"] \
 312   [list "PR ld/16746 (2)" \
 313    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746c.o tmpdir/pr16746a.o" "-O2 -flto" \
 314    {dummy.c} {} "pr16746b.exe"] \
 315   [list "Build pr21382a.o" \
 316    "" "-O2 -flto" \
 317    {pr21382a.c} {} "" "c"] \
 318   [list "Build pr21382.so" \
 319    "-shared" "-O2 -fpic" \
 320    {pr21382b.c} {} "pr21382.so" "c"] \
 321   [list {Build pr22220lib.so} \
 322    {-shared -Wl,--version-script=pr22220lib.ver} {-fPIC} \
 323    {pr22220lib.cc} {} {pr22220lib.so} {c++}] \
 324   [list {Build pr22220main.o} \
 325    {} {-flto} \
 326    {pr22220main.cc} {} {} {c++}] \
 327   [list "Build libpr23818.so" \
 328    "-shared -flto -g -Wl,-version-script,pr23818.t" \
 329    "-g -flto $lto_fat" \
 330    {pr23818a.c pr23818b.c} \
 331    {{"readelf" {-s --wide} "pr23818.d"}} \
 332    "libpr23818.so"] \
 333   [list "Build libpr23958.so" \
 334    "-shared -flto -Wl,-version-script,pr23958.t" \
 335    "-g -flto $lto_fat" \
 336    {pr23958.c} \
 337    "" \
 338    "libpr23958.so"] \
 339   [list "Build pr24486a.o" \
 340    "$plug_opt" "-flto -O2" \
 341    {pr24486a.c} {} "" "c"] \
 342   [list "Build pr24486b.so" \
 343    "-shared" "-O2 -fpic" \
 344    {pr24486b.c} {} "pr24486b.so" "c"] \
 345   [list "Build pr24486c.so" \
 346    "-shared -Wl,--no-as-needed tmpdir/pr24486b.so" "-O2 -fpic" \
 347    {pr24486c.c} {} "pr24486c.so" "c"] \
 348   [list "PR ld/24486" \
 349    "-O2 -flto tmpdir/pr24486a.o tmpdir/pr24486c.so -Wl,--as-needed tmpdir/pr24486b.so" "" \
 350    {dummy.c} {} "pr24486.exe"] \
 351   [list "Build pr25593a-1.o" \
 352    "$plug_opt" "-flto -O2" \
 353    {pr25593a-1.c} {} "" "c"] \
 354   [list "Build pr25593a-2.o" \
 355    "" "-O2" \
 356    {pr25593a-2.c} {} "" "c"] \
 357   [list "Build pr25593b.o" \
 358    "" "-O2" \
 359    {pr25593b.c} {} "" "c"] \
 360   [list "Build pr25593c.so" \
 361    "-shared" "-O2 -fpic" \
 362    {pr25593c.c} {} "pr25593c.so" "c"] \
 363   [list "Build pr25593d.so" \
 364    "-shared" "-O2 -fpic" \
 365    {pr25593d.c} {} "pr25593d.so" "c"] \
 366   [list "Build pr25593e.so" \
 367    "-shared" "-O2 -fpic" \
 368    {pr25593e.c} {} "pr25593e.so" "c"] \
 369   [list "PR ld/r25593 (LTO)" \
 370    "-O2 -flto -Wl,--as-needed tmpdir/pr25593a-1.o tmpdir/pr25593b.o \
 371     tmpdir/pr25593c.so tmpdir/pr25593d.so tmpdir/pr25593e.so" "" \
 372    {dummy.c} {{readelf {-d --wide} pr25593.d}} "pr25593a.exe"] \
 373   [list "PR ld/r25593" \
 374    "-O2 -flto -Wl,--as-needed tmpdir/pr25593a-2.o tmpdir/pr25593b.o \
 375     tmpdir/pr25593c.so tmpdir/pr25593d.so tmpdir/pr25593e.so" "" \
 376    {dummy.c} {{readelf {-d --wide} pr25593.d}} "pr25593b.exe"] \
 377   [list "Build pr25618a.o" \
 378    "$plug_opt" "-O2 -flto -fpic" \
 379    {pr25618a.cc} {} "" "c++"] \
 380   [list "Build pr25618.a" \
 381    "$plug_opt" "-O2 -flto -fpic" \
 382    {pr25618b.cc} {} "pr25618.a" "c++"] \
 383   [list "Build pr25618.so" \
 384    "-shared -Wl,--exclude-libs,ALL tmpdir/pr25618a.o tmpdir/pr25618.a" \
 385    "-fpic" \
 386    {dummy.c} {{readelf {--dyn-syms --wide} pr25618.d}} "pr25618.so" "c++"] \
 387 ]
 388
 389 # PR 14918 checks that libgcc is not spuriously included in a shared link of
 390 # an empty program.  The ARM crt1.o startup code however calls __libc_csu_init
 391 # in /usr/lib/libc_nonshared.a(elf-init.oS).  This in turn needs
 392 # __aeabi_unwind_cpp_pr0@@GCC_3.5 which is provided by libgcc_s.so.1, so the
 393 # test fails.  Hence this code to skip the test.
 394 if { ! [istarget "arm*-*-*"] } {
 395     set lto_link_elf_tests [concat $lto_link_elf_tests [list \
 396   [list "PR ld/14918" \
 397    "-flto" "-flto" \
 398    {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"] \
 399   ]]
 400 }
 401
 402 # PR 12982 checks that an executable stack is not created by default
 403 # when using the LTO plugin.  The HPPA target however requires an
 404 # executable stack for syscall restarts and signal returns, so we
 405 # skip this test for that target.
 406 if { ! [istarget "hppa*-*-*"] } {
 407     set lto_link_elf_tests [concat $lto_link_elf_tests [list \
 408   [list "PR ld/12982" \
 409    "-O2 -flto -fuse-linker-plugin" "-O2 -flto" \
 410    {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"] \
 411   ]]
 412 }
 413
 414 # Check final symbols in executables.
 415 set lto_link_symbol_tests [list \
 416   [list "LTO 3 symbol" \
 417    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 418    {dummy.c} {{"nm" {} "lto-3.d"}} "lto-3.exe" "c"] \
 419   [list "LTO 5 symbol" \
 420    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 421    {dummy.c} {{"nm" {} "lto-5.d"}} "lto-5.exe" "c"] \
 422   [list "LTO 9 symbol" \
 423    "-O2 -flto -fuse-linker-plugin tmpdir/lto-9.o" "" \
 424    {dummy.c} {{"nm" {-C} "lto-9.d"}} "lto-9.exe" "c++"] \
 425   [list "LTO 16a symbol" \
 426    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin" "-flto" \
 427    {lto-16a.c} {{"nm" {} "lto-16a.d"}} "lto-16.exe" "c"] \
 428   [list "LTO 16b symbol" \
 429    "-O2 -Wl,-e,foo -u bar -nostdlib -flto -fuse-linker-plugin" "-flto" \
 430    {lto-16a.c lto-16b.c} {{"nm" {} "lto-16b.d"}} "lto-16b.exe" "c"] \
 431   [list "PR ld/13183" \
 432    "-O2 -flto -fuse-linker-plugin tmpdir/pr13183b.o tmpdir/libpr13183.a" "" \
 433    {dummy.c} {{"nm" {} "pr13183.d"}} "pr13183.exe" "c"] \
 434 ]
 435
 436 # LTO run-time tests.
 437 set lto_run_tests [list \
 438   [list "LTO 3a" \
 439    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 440    {dummy.c} "lto-3b.exe" "lto-3.out" "" "c"] \
 441   [list "LTO 3b" \
 442    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/lto-3.o" "" \
 443    {dummy.c} "lto-3c.exe" "lto-3.out" "" "c"] \
 444   [list "LTO 3c" \
 445    "-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" "" \
 446    {dummy.c} "lto-3d.exe" "lto-3.out" "" "c"] \
 447   [list "LTO 5" \
 448    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 449    {dummy.c} "lto-5.exe" "lto-5.out" "" "c"] \
 450   [list "LTO 11" \
 451    "-O -flto -fuse-linker-plugin tmpdir/liblto-11.a" "" \
 452    {dummy.c} "lto-11.exe" "lto-11.out" "" "c"] \
 453   [list "LTO 12a" \
 454    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/liblto-12.a tmpdir/lto-12b.o" "" \
 455    {dummy.c} "lto-12a.exe" "lto-12.out" "" "c"] \
 456   [list "LTO 12b" \
 457    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/lto-12b.o tmpdir/liblto-12.a" "" \
 458    {dummy.c} "lto-12b.exe" "lto-12.out" "" "c"] \
 459   [list "LTO 13" \
 460    "-O -flto -fuse-linker-plugin tmpdir/lto-13a.o tmpdir/liblto-13.a tmpdir/lto-13b.o" "" \
 461    {dummy.c} "lto-13.exe" "lto-13.out" "" "c"] \
 462   [list "LTO 14" \
 463    "-O2 -flto -fuse-linker-plugin tmpdir/lto-14a.o -Wl,--whole-archive tmpdir/liblto-14.a -Wl,--no-whole-archive tmpdir/lto-14b.o" "" \
 464    {dummy.c} "lto-14.exe" "lto-14.out" "" "c"] \
 465   [list "LTO 15" \
 466    "-O2 -flto -fuse-linker-plugin -Wl,--start-group tmpdir/liblto-15.a tmpdir/lto-15a.o -Wl,--end-group" "" \
 467    {dummy.c} "lto-15.exe" "lto-15.out" "" "c"] \
 468   [list "PR ld/13066" \
 469    "-O2 -flto -fuse-linker-plugin" "" \
 470    {pr13066.cc} "pr13066.exe" "pr13066.out" "" "c++"] \
 471   [list "PR ld/13201" \
 472    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr13201.o -lm" "" \
 473    {dummy.c} "pr13201.exe" "pr13201.out" "" "c"] \
 474   [list "PR ld/15323 (3)" \
 475    "-O2 -flto -fuse-linker-plugin tmpdir/pr15323a.o" "" \
 476    {pr15323b.c} "pr15323.exe" "pr15323.out" "-flto -O2" "c"] \
 477   [list "PR ld/15323 (4)" \
 478    "-O2 -flto tmpdir/pr15323a-r.o" "" \
 479    {dummy.c} "pr15323a.exe" "pr15323.out" "-flto -O2" "c"] \
 480   [list "PR ld/19317 (3)" \
 481    "-O2 -flto tmpdir/pr19317-r.o" "" \
 482    {dummy.c} "pr19317.exe" "pr19317.out" "-flto -O2" "c"] \
 483   [list "Run pr20276" \
 484    "-O2 -flto tmpdir/pr20276a.o tmpdir/pr20276b.o" "" \
 485    {dummy.c} "pr20276" "pass.out" "-flto -O2" "c"] \
 486   [list "Run pr20267a" \
 487    "-O2 -flto -fcommon tmpdir/pr20267a.o tmpdir/libpr20267a.a" "" \
 488    {dummy.c} "pr20267a" "pass.out" "-flto -O2 -fcommon" "c"] \
 489   [list "Run pr20267b" \
 490    "-O2 -flto -fcommon tmpdir/pr20267a.o tmpdir/libpr20267b.a" "" \
 491    {dummy.c} "pr20267b" "pass.out" "-flto -O2 -fcommon" "c"] \
 492   [list "Run pr22502" \
 493    "-O2 -flto tmpdir/pr22502a.o tmpdir/pr22502b.o" "" \
 494    {dummy.c} "pr20267" "pass.out" "-flto -O2 -fcommon" "c"] \
 495   [list "Run pr22751" \
 496    "-O2 -flto" "" \
 497    {dummy.c} "pr22751" "pass.out" "-flto -O2" "c" "" \
 498    "-Wl,--whole-archive tmpdir/pr22751.a -Wl,--no-whole-archive"] \
 499   [list "Run pr24406-1" \
 500    "-O2 -flto" "" \
 501    {pr24406-1.c} "pr24406-1" "pass.out" "-flto -O2" "c" "" \
 502    "-Wl,--wrap=read"] \
 503   [list "Run pr24406-2" \
 504    "-O2 -flto" "" \
 505    {pr24406-2a.c} "pr24406-2" "pass.out" \
 506    "-flto -O2" "c" "" \
 507    "tmpdir/pr24406-2b.o -Wl,--wrap=cook"] \
 508   [list "Run pr26163" \
 509    "-O2 -flto" "" \
 510    {pr26163b.c} "pr24406-2" "pass.out" \
 511    "-flto -O2" "c" "" \
 512    "tmpdir/pr26163a.o -Wl,--defsym,g=real_g"] \
 513 ]
 514
 515 if { [at_least_gcc_version 4 7] } {
 516     set lto_run_tests [concat $lto_run_tests [list \
 517       [list "PR ld/12942 (1)" \
 518        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942b.o" "" \
 519        {dummy.c} "pr12942a.exe" "pr12942.out" "" "c++"] \
 520       [list "PR ld/12942 (2)" \
 521        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942c.o" "" \
 522        {dummy.c} "pr12942c.exe" "pr12942.out" "" "c++"] \
 523     ]]
 524 }
 525
 526 # LTO run-time tests for ELF which require shared library support.
 527 set lto_run_elf_shared_tests [list \
 528   [list "LTO 7" \
 529    "-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" "" \
 530    {dummy.c} "lto-7.exe" "lto-7.out" "" "c"] \
 531   [list "Run pr21382" \
 532    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr21382a.o tmpdir/pr21382.so" "" \
 533    {dummy.c} "pr21382.exe" "pass.out" "" "c"] \
 534   [list {pr22220a} \
 535    {-flto -fuse-linker-plugin tmpdir/pr22220main.o tmpdir/pr22220lib.so} {} \
 536    {dummy.c} {pr22220a.exe} {pass.out} {} {c++}] \
 537   [list {pr22220b} \
 538    {-flto -fuse-linker-plugin -Wl,--no-as-needed tmpdir/pr22220lib.so tmpdir/pr22220main.o} {} \
 539    {dummy.c} {pr22220b.exe} {pass.out} {} {c++}] \
 540 ]
 541
 542 # LTO run-time tests for ELF
 543 set lto_run_elf_tests [list \
 544   [list "LTO 8" \
 545    "-O2 -flto -fuse-linker-plugin tmpdir/lto-8b.o tmpdir/lto-8a.o" "" \
 546    {dummy.c} "lto-8.exe" "lto-8.out" "" "c"] \
 547   [list "LTO TLS IE" \
 548    "-O2 -flto -fuse-linker-plugin" "" \
 549    {run-ie.c} "run-ie.exe" "run-ie.out" "" "c"] \
 550 ]
 551
 552 run_cc_link_tests $lto_link_tests
 553
 554 # These compilation tests generate intermediate object files which will be used
 555 # by some elf tests besides shared libs tests.  So, always compile them.
 556 run_cc_link_tests $lto_compile_elf_tests
 557
 558 # Restrict these to ELF targets that support shared libs and PIC.
 559 if { [is_elf_format] && [check_lto_shared_available] } {
 560     run_cc_link_tests $lto_link_elf_tests
 561     set testname "PR ld/15146 (2)"
 562     set exec_output [run_host_cmd "$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"]
 563     if { [ regexp "undefined reference to symbol '\\.?xxx'" $exec_output ] } {
 564         pass $testname
 565     } {
 566         fail $testname
 567     }
 568     set testname "PR ld/16746 (3)"
 569     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746b.o tmpdir/pr16746d.o"]
 570     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 571         pass $testname
 572     } {
 573         fail $testname
 574     }
 575     set testname "PR ld/16746 (4)"
 576     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746d.o tmpdir/pr16746b.o"]
 577     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 578         pass $testname
 579     } {
 580         fail $testname
 581     }
 582 }
 583
 584 set testname "Build liblto-11.a"
 585 remote_file host delete "tmpdir/liblto-11.a"
 586 set catch_output [run_host_cmd "$ar" "rc $plug_opt tmpdir/liblto-11.a tmpdir/lto-11a.o tmpdir/lto-11b.o tmpdir/lto-11c.o"]
 587 if {![string match "" $catch_output]} {
 588     unresolved $testname
 589     restore_notify
 590     return
 591 }
 592
 593 if { [at_least_gcc_version 4 7] } {
 594     # Check expected LTO linker errors.
 595     # Since the asm symbol name hack in pr12365b.c doesn't work on all
 596     # targets, run PR ld/12365 tests only for known targets.
 597     if { ([istarget "i?86-*-elf*"]
 598            || [istarget "i?86-*-linux*"]
 599            || [istarget "i?86-*-gnu*"]
 600            || [istarget "x86_64-*-linux*"]
 601            || [istarget "amd64-*-linux*"]) } {
 602         set testname "PR ld/12365"
 603         set exec_output [run_host_cmd "$CC" "-O2 -flto -flto-partition=none -fuse-linker-plugin -o tmpdir/pr12365 tmpdir/pr12365a.o tmpdir/pr12365b.o tmpdir/pr12365c.o"]
 604         set exec_output [prune_warnings $exec_output]
 605         if { [ regexp "undefined reference to `my_bcopy'" $exec_output ] } {
 606             # Linker should catch the reference to undefined `my_bcopy'
 607             # error caused by a GCC bug.
 608             pass $testname
 609         } elseif { [ string match "" $exec_output ] } {
 610             global READELF
 611             set exec_output [run_host_cmd "$READELF" "-s -W tmpdir/pr12365"]
 612             if { [ regexp "my_bcopy" $exec_output ] } {
 613                 # Verify that there is no `my_bcopy' symbol in executable.
 614                 fail $testname
 615             } {
 616                 pass $testname
 617             }
 618         } {
 619             fail $testname
 620         }
 621
 622         run_cc_link_tests [list \
 623             [list \
 624                 "Build pr22721a.so" \
 625                 "-shared -nostdlib -nostartfiles -Wl,-version-script,pr22721.t" \
 626                 "" \
 627                 {pr22721a.s} \
 628                 {} \
 629                 "pr22721a.so" \
 630             ] \
 631             [list \
 632                 "Build pr22721b.o" \
 633                 "$plug_opt" \
 634                 "-O2 -fPIC -flto $lto_no_fat" \
 635                 {pr22721b.c} \
 636             ] \
 637             [list \
 638                 "Build PR ld/pr22721" \
 639                 "-O2 -flto -fuse-linker-plugin -nostdlib -nostartfiles \
 640                 -Wl,-e,_start tmpdir/pr22721b.o tmpdir/pr22721a.so" \
 641                 "" \
 642                 {dummy.c} \
 643                 {} \
 644                 "pr22721.exe"
 645             ] \
 646         ]
 647     }
 648     set testname "PR ld/12942 (3)"
 649     set exec_output [run_host_cmd "$CXX" "-O2 -flto -fuse-linker-plugin tmpdir/pr12942b.o tmpdir/pr12942a.o"]
 650     if { [ regexp "undefined reference to `\\.?link_error\\(\\)'" $exec_output ] } {
 651         pass $testname
 652     } {
 653         fail $testname
 654     }
 655
 656     run_cc_link_tests [list \
 657         [list \
 658             "Build pr23460*.o" \
 659             "$plug_opt" \
 660             "-O2 -fPIC -flto $lto_no_fat" \
 661             {pr23460a.c pr23460b.c pr23460c.c \
 662              pr23460d.c pr23460e.c pr23460f.c} \
 663         ] \
 664     ]
 665     set exec_output [run_host_cmd "sh" \
 666                                   "-c \"ulimit -n 16; \
 667                                    $ar -rc $plug_opt \
 668                                    tmpdir/libpr23460.a \
 669                                    tmpdir/pr23460a.o \
 670                                    tmpdir/pr23460b.o \
 671                                    tmpdir/pr23460c.o \
 672                                    tmpdir/pr23460d.o \
 673                                    tmpdir/pr23460e.o \
 674                                    tmpdir/pr23460f.o\""]
 675     set exec_output [prune_warnings $exec_output]
 676     if [string match "" $exec_output] then {
 677         pass "PR binutils/23460"
 678     } else {
 679         fail "PR binutils/23460"
 680     }
 681 }
 682
 683 # Run "ld -r" to generate inputs for complex LTO tests.
 684 run_dump_test "lto-3r"
 685 remote_exec host "mv" "tmpdir/dump tmpdir/lto-3.o"
 686 run_dump_test "lto-5r"
 687 remote_exec host "mv" "tmpdir/dump tmpdir/lto-5.o"
 688
 689 run_cc_link_tests $lto_link_symbol_tests
 690
 691 run_ld_link_tests [list \
 692   [list "PR ld/19317 (2)" \
 693    "-r tmpdir/pr19317.o" "" "" \
 694    {dummy.s} {} "pr19317-r.o"] \
 695 ]
 696
 697 run_ld_link_exec_tests $lto_run_tests
 698
 699 if { [is_elf_format] } {
 700     run_ld_link_exec_tests $lto_run_elf_tests
 701
 702     # Note - it is not guaranteed that the ordering of symbols in the dynamic
 703     # symbol table will match the ordering of the symbols specified by the
 704     # --dynamic-list command line option.
 705     #
 706     # For PR22983 we want to make sure that all four symbols specified in
 707     # pr222983.t are present in the output, but a simple sequences of regexps
 708     # will not work as we do not know the order of the symbols.  (Readelf
 709     # does not have a symbol sorting option and the run_cc_list_tests proc
 710     # does not allow for the output of the dump program to piped into `sort`).
 711     #
 712     # So instead we run readelf four times, each time checking for the
 713     # presence of a specific symbol from the pr22983.t file.
 714     run_cc_link_tests [list \
 715         [list \
 716             "Build pr22983" \
 717             "-Wl,--dynamic-list,pr22983.t" \
 718             "-flto" \
 719              {pr22983a.c pr22983b.c} \
 720             {{readelf {--dyn-syms --wide} pr22983.1.d} \
 721              {readelf {--dyn-syms --wide} pr22983.2.d} \
 722              {readelf {--dyn-syms --wide} pr22983.3.d} \
 723              {readelf {--dyn-syms --wide} pr22983.4.d}} \
 724             "pr22983" \
 725         ] \
 726     ]
 727 }
 728
 729 if { [is_elf_format] && [check_lto_shared_available] } {
 730     run_ld_link_exec_tests $lto_run_elf_shared_tests
 731 }
 732
 733 proc pr20103 {cflags libs} {
 734     global CC
 735
 736     set testname "PR ld/20103 ($cflags $libs)"
 737     set exec_output [run_host_cmd "$CC" "$cflags $libs"]
 738     if { [ regexp "undefined reference to `\\.?dead'" $exec_output ] } {
 739         pass "$testname (1)"
 740     } {
 741         fail "$testname (1)"
 742     }
 743     if { [ regexp "plugin needed to handle lto object" $exec_output ] } {
 744         fail "$testname (2)"
 745     } {
 746         pass "$testname (2)"
 747     }
 748 }
 749
 750 if { [check_lto_fat_available] } {
 751     run_cc_link_tests [list \
 752         [list \
 753             "Build fatpr20103a.a" \
 754             "$plug_opt" "-flto -ffat-lto-objects" \
 755             {pr20103a.c} {} "fatpr20103a.a"
 756         ] \
 757         [list \
 758             "Build fatpr20103b.a" \
 759             "$plug_opt" "-flto -ffat-lto-objects" \
 760             {pr20103b.c} {} "fatpr20103b.a"
 761         ] \
 762         [list \
 763             "Build fatpr20103c.a" \
 764             "$plug_opt" "-flto -ffat-lto-objects" \
 765             {pr20103c.c} {} "fatpr20103c.a" \
 766         ] \
 767         [list \
 768             "Build thinpr20103a.a" \
 769             "$plug_opt" "-flto -fno-fat-lto-objects" \
 770             {pr20103a.c} {} "thinpr20103a.a"
 771         ] \
 772         [list \
 773             "Build thinpr20103b.a" \
 774             "$plug_opt" "-flto -fno-fat-lto-objects" \
 775             {pr20103b.c} {} "thinpr20103b.a"
 776         ] \
 777         [list \
 778             "Build thinpr20103c.a" \
 779             "$plug_opt" "-flto -fno-fat-lto-objects" \
 780             {pr20103c.c} {} "thinpr20103c.a" \
 781         ] \
 782         [list \
 783             "Build pr20103a" \
 784             "-O2 -flto -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 785             "-O2 -flto" \
 786             {dummy.c} {} "pr20103a" \
 787         ] \
 788         [list \
 789             "Build pr20103b" \
 790             "-O2 -flto -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 791             "-O2 -flto" \
 792             {dummy.c} {} "pr20103b" \
 793         ] \
 794         [list \
 795             "Build pr20103c" \
 796             "-O2 -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 797             "-O2" \
 798             {dummy.c} {} "pr20103c" \
 799         ] \
 800     ]
 801     pr20103 "-O2 -flto" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 802     pr20103 "-O2 -flto" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 803     pr20103 "-O2" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 804
 805     if { [at_least_gcc_version 4 9] } {
 806         run_cc_link_tests [list \
 807             [list \
 808                 "Build pr20103d" \
 809                 "-O2 -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 810                 "-O2" \
 811                 {dummy.c} {} "pr20103d" \
 812             ] \
 813         ]
 814         pr20103 "-O2" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 815     }
 816 }
 817
 818 restore_notify