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   set no_lto "-fno-lto"
  66 }
  67
  68 # Simple LTO tests and generate input files for complex LTO tests.
  69 set lto_link_tests [list \
  70   [list "LTO 1" \
  71    "-O2 -flto -fuse-linker-plugin" "-flto -fuse-linker-plugin" \
  72    {lto-1a.c lto-1b.c} {} "lto-1.exe"] \
  73   [list "Compile 2" \
  74    "" "-O2 -flto -fuse-linker-plugin $NOSANITIZE_CFLAGS" \
  75    {lto-2.c} {} ""] \
  76   [list "LTO 2" \
  77    "-static -O2 -flto -fuse-linker-plugin tmpdir/lto-2.o -lm" \
  78    "$NOSANITIZE_CFLAGS" \
  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 "Compile PR ld/12365" \
  96    "" "-flto -O2 $lto_fat" \
  97    {pr12365a.c pr12365b.c pr12365c.c} {} ""] \
  98   [list "Compile 9" \
  99    "" "-O2 -finline -flto" \
 100    {lto-9.cc} {} "" "c++"] \
 101   [list "Compile 11a" \
 102    "" "-O -flto" \
 103    {lto-11a.c} {} ""] \
 104   [list "Compile 11b" \
 105    "" "-O -flto" \
 106    {lto-11b.c} {} ""] \
 107   [list "Compile 11c" \
 108    "" "-O" \
 109    {lto-11c.c} {} ""] \
 110   [list "Build liblto-12.a" \
 111    "$plug_opt" "-O2 -flto" \
 112    {lto-12c.c} {} "liblto-12.a"] \
 113   [list "Compile 12" \
 114    "" "-O2 -flto" \
 115    {lto-12a.c lto-12b.c} {} ""] \
 116   [list "Compile 13" \
 117    "" "-O2 -flto" \
 118    {lto-13a.c lto-13b.c} {} ""] \
 119   [list "Build liblto-13.a" \
 120    "" "-O2" \
 121    {lto-13c.c} {} "liblto-13.a"] \
 122   [list "Compile 14a" \
 123    "" "-flto" \
 124    {lto-14a.c lto-14b.c} {} ""] \
 125   [list "Build liblto-14.a" \
 126    "$plug_opt" "-flto" \
 127    {lto-14c.c} {} "liblto-14.a"] \
 128   [list "Compile 15a" \
 129    "" "-flto" \
 130    {lto-15a.c} {} ""] \
 131   [list "Build liblto-15.a" \
 132    "$plug_opt" "-flto" \
 133    {lto-15b.c} {} "liblto-15.a"] \
 134   [list "PR ld/12696" \
 135    "-O2 -flto -fuse-linker-plugin -r -nostdlib" "-O2 -flto" \
 136    {pr12696-1.cc} {} "pr12696-1r.o" "c++"] \
 137   [list "Compile PR ld/12758" \
 138    "" "" \
 139    {pr12758a.s} {} ""] \
 140   [list "Build libpr12758.a" \
 141    "" "-flto -O2 $lto_fat $NOSANITIZE_CFLAGS" \
 142    {pr12758b.c} {} "libpr12758.a"] \
 143   [list "PR ld/12758" \
 144    "$NOPIE_LDFLAGS $NOSANITIZE_CFLAGS -O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12758a.o -Wl,--start-group tmpdir/libpr12758.a -Wl,--end-group" \
 145    "$NOSANITIZE_CFLAGS" \
 146    {dummy.c} {} "pr12758.exe"] \
 147   [list "Build libpr13183.a" \
 148    "-T" "-flto -O2 $lto_fat" \
 149    {pr13183a.c} {} "libpr13183.a"] \
 150   [list "Compile PR ld/13183" \
 151    "" "-flto -O2" \
 152    {pr13183b.c} {} ""] \
 153   [list "Compile PR ld/13201" \
 154    "" "-flto -O2" \
 155    {pr13201.c} {} ""] \
 156   [list "PR ld/13287" \
 157    "-flto -fuse-linker-plugin -Wl,--as-needed" "-flto" \
 158    {pr13287.cc} {} "pr13287.exe" "c++"] \
 159   [list "PR ld/15323 (1)" \
 160    "" "-O2" \
 161    {pr15323a.c} {} "" "c"] \
 162   [list "PR ld/15323 (2)" \
 163    "-O2 -flto -r -nostdlib" "-O2 -flto" \
 164    {pr15323a.c} {} "pr15323a-r.o" "c"] \
 165   [list "Compile(1) PR ld/pr16846" \
 166    "" "-flto" \
 167    {pr16846a.c pr16846b.c} {} ""] \
 168   [list "Compile(2) PR ld/pr16846" \
 169    "" "" \
 170    {pr16846c.c} {} ""] \
 171   [list "PR ld/pr16846(1)" \
 172    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846b.o tmpdir/pr16846c.o" "" \
 173    {dummy.c} {} "pr16846a.exe"] \
 174   [list "PR ld/pr16846(2)" \
 175    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846c.o tmpdir/pr16846b.o" "" \
 176    {dummy.c} {} "pr16846b.exe"] \
 177   [list "PR ld/19317 (1)" \
 178    "$plug_opt" "-flto $lto_no_fat" \
 179    {pr19317.c} {} "libpr19317.a"] \
 180   [list "Build pr20276a.o" \
 181    "" "-fno-lto -fcommon" \
 182    {pr20276a.c}] \
 183   [list "Build pr20276b.o" \
 184    "$plug_opt" "-flto $lto_no_fat -fcommon" \
 185    {pr20276b.c}] \
 186   [list "Build pr20267a.o" \
 187    "" "-fcommon" \
 188    {pr20267a.c}] \
 189   [list "Build libpr20267a.a" \
 190    "$plug_opt" "-flto $lto_fat -fcommon" \
 191    {pr20267b.c} {} "libpr20267a.a"] \
 192   [list "Build libpr20267b.a" \
 193    "$plug_opt" "-flto $lto_no_fat -fcommon" \
 194    {pr20267b.c} {} "libpr20267b.a"] \
 195   [list "Build pr20321" \
 196    "-flto -Wl,-plugin,$plug_so" "-flto" \
 197    {pr20321.c} {{warning ".*: duplicated plugin"}} \
 198    "pr20321" "c"] \
 199   [list "Build pr22502a.o" \
 200    "" "" \
 201    {pr22502a.c}] \
 202   [list "Build pr22502b.o" \
 203    "$plug_opt" "-flto $lto_no_fat" \
 204    {pr22502b.c}] \
 205   [list "Build pr22751.a" \
 206    "$plug_opt" "-flto $lto_no_fat $INT128_CFLAGS" \
 207    {pr22751.c} {} "pr22751.a"] \
 208   [list "Build pr24406-2b.o" \
 209    "" "-O2 -fno-lto" \
 210    {pr24406-2b.c}] \
 211   [list "Build pr26163a.o" \
 212    "" "-O2 -fno-lto" \
 213    {pr26163a.c}] \
 214   [list "Build pr26262b.o" \
 215    "" "-O2" \
 216    {pr26262b.c} {} "" "c"] \
 217   [list "Build pr26262c.o" \
 218    "" "-O2" \
 219    {pr26262c.c} {} "" "c"] \
 220   [list "Build pr26267a.o" \
 221    "" "-O2 -flto $lto_no_fat" \
 222    {pr26267a.c} {} "" "c"] \
 223   [list "Build pr26267b.o" \
 224    "" "-O2" \
 225    {pr26267b.c} {} "" "c"] \
 226   [list "Build pr26267c.o" \
 227    "" "-O2" \
 228    {pr26267c.c} {} "" "c"] \
 229   [list "Build pr26267a" \
 230    "" "-O2" \
 231    {pr26267a.c} {} "" "c"] \
 232   [list "Build pr26267a" \
 233    "-flto tmpdir/pr26267a.o tmpdir/pr26267b.o tmpdir/pr26267c.o" \
 234    "-flto $lto_no_fat" \
 235    {dummy.c} \
 236    {{error_output "pr26267.err"}} \
 237    "pr26267a"] \
 238   [list "Build pr26267b" \
 239    "-flto tmpdir/pr26267b.o tmpdir/pr26267c.o tmpdir/pr26267a.o" \
 240    "-flto $lto_no_fat" \
 241    {dummy.c} \
 242    {{error_output "pr26267.err"}} \
 243    "pr26267b"] \
 244   [list "Build pr26389.o" \
 245    "$plug_opt" "-flto $lto_no_fat -fcommon" \
 246    {pr26389.c} \
 247    [list [list "nm" "$plug_opt" "pr26389.d"]]] \
 248 ]
 249
 250 if { [at_least_gcc_version 10 0] } {
 251     set lto_link_tests [concat $lto_link_tests [list \
 252         [list "pr25355.o" \
 253          "" \
 254          "-flto -fno-common $lto_no_fat" \
 255          {pr25355.c} \
 256          [list [list "nm" "$plug_opt" "pr25355.d"]]] \
 257     ]]
 258 }
 259
 260 if { [at_least_gcc_version 4 7] } {
 261     set lto_link_tests [concat $lto_link_tests [list \
 262       [list "Compile PR ld/12942 (1)" \
 263        "" "-flto -O2" \
 264        {pr12942a.cc pr12942c.cc} {} "" "c++"] \
 265       [list "Compile PR ld/12942 (2)" \
 266        "" "-O0" \
 267        {pr12942b.cc} {} "" "c++"] \
 268     ]]
 269 }
 270
 271 set lto_compile_elf_tests [list \
 272   [list "Compile 7" \
 273    "" "-flto -O2" \
 274    {lto-7a.c lto-7b.c lto-7c.c} {} ""] \
 275   [list "Compile 8a" \
 276    "" "-O2" \
 277    {lto-8a.c} {} ""] \
 278   [list "Compile 8b" \
 279    "" "-flto -O2" \
 280    {lto-8b.c} {} ""] \
 281   [list "PR ld/23309" \
 282    "-O2 -flto -fuse-linker-plugin -fvisibility=hidden -ffunction-sections -Wl,--gc-sections,-u,KeepMe" \
 283    "-O2 -flto -fuse-linker-plugin -fvisibility=hidden -ffunction-sections" \
 284    {pr23309.c} {{"nm" {} "pr23309.d"}} "pr23309.exe" "c"] \
 285 ]
 286
 287 # Generate input files for complex LTO tests for ELF.
 288 set lto_link_elf_tests [list \
 289   [list "LTO 6" \
 290    "-O2 -flto -fuse-linker-plugin" "" \
 291    {lto-6.c} {} "lto-6.exe" "c"] \
 292   [list "Build liblto-7.so" \
 293    "-shared" "-O2 -fpic" \
 294    {lto-7d.c} {} "liblto-7.so" "c"] \
 295   [list "Build liblto-17a.so" \
 296    "-shared -O2 -fpic -flto -fuse-linker-plugin" "-O2 -fpic -flto" \
 297    {lto-17a.c} {{"nm" {} "lto-17a.d"}} "liblto-17a.so" "c"] \
 298   [list "Build liblto-17b.so 1" \
 299    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 300    {lto-17b.c} {{"nm" {} "lto-17b-1.d"}} "liblto-17b.so"] \
 301   [list "Build liblto-17b.so 2" \
 302    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 303    {lto-17b.c} {{"nm" {} "lto-17b-2.d"}} "liblto-17b.so"] \
 304   [list "Compile PR ld/12760" \
 305    "" "-g -O0" \
 306    {pr12760a.c} {} ""] \
 307   [list "Build libpr12760.a" \
 308    "" "-flto -O2 $lto_fat" \
 309    {pr12760b.c} {} "libpr12760.a"] \
 310   [list "PR ld/12760" \
 311    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12760a.o -Wl,--start-group tmpdir/libpr12760.a -Wl,--end-group" "" \
 312    {dummy.c} {{warning "pr12760a.c:6: warning: Bad \\.?bar"}} \
 313    "pr12760.exe" "c"] \
 314   [list "PR ld/12975" \
 315    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib -Wl,-version-script,pr12975.t" "-O2 -flto" \
 316    {pr12975.c} {{"readelf" {-s --wide} "pr12975.d"}} "pr12975.so" "c"] \
 317   [list "PR ld/13229" \
 318    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -finline -fno-early-inlining -flto" \
 319    {pr13229.cc} {{"readelf" {-s --wide} "pr13229.d"}} "pr13229.so" "c++"] \
 320   [list "PR ld/13244" \
 321    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -fno-early-inlining -flto" \
 322    {pr13244.c} {{"readelf" {-s --wide} "pr13244.d"}} "pr13244.so" "c"] \
 323   [list "Build libpr16746a.a" \
 324    "" "" \
 325    {pr16746a.c pr16746b.c} {} "lib15146a.a"] \
 326   [list "Build libpr16746b.a" \
 327    "$plug_opt" "-O2 -flto" \
 328    {pr16746c.c pr16746d.c} {} "lib15146b.a"] \
 329   [list "PR ld/16746 (1)" \
 330    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746a.o tmpdir/pr16746c.o" "-O2 -flto" \
 331    {dummy.c} {} "pr16746a.exe"] \
 332   [list "PR ld/16746 (2)" \
 333    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746c.o tmpdir/pr16746a.o" "-O2 -flto" \
 334    {dummy.c} {} "pr16746b.exe"] \
 335   [list "Build pr21382a.o" \
 336    "" "-O2 -flto" \
 337    {pr21382a.c} {} "" "c"] \
 338   [list "Build pr21382.so" \
 339    "-shared" "-O2 -fpic" \
 340    {pr21382b.c} {} "pr21382.so" "c"] \
 341   [list {Build pr22220lib.so} \
 342    {-shared -Wl,--version-script=pr22220lib.ver} {-fPIC} \
 343    {pr22220lib.cc} {} {pr22220lib.so} {c++}] \
 344   [list {Build pr22220main.o} \
 345    {} {-flto} \
 346    {pr22220main.cc} {} {} {c++}] \
 347   [list "Build libpr23818.so" \
 348    "-shared -flto -g -Wl,-version-script,pr23818.t" \
 349    "-g -flto $lto_fat" \
 350    {pr23818a.c pr23818b.c} \
 351    {{"readelf" {-s --wide} "pr23818.d"}} \
 352    "libpr23818.so"] \
 353   [list "Build libpr23958.so" \
 354    "-shared -flto -Wl,-version-script,pr23958.t" \
 355    "-g -flto $lto_fat" \
 356    {pr23958.c} \
 357    "" \
 358    "libpr23958.so"] \
 359   [list "Build pr24486a.o" \
 360    "$plug_opt" "-flto -O2" \
 361    {pr24486a.c} {} "" "c"] \
 362   [list "Build pr24486b.so" \
 363    "-shared" "-O2 -fpic" \
 364    {pr24486b.c} {} "pr24486b.so" "c"] \
 365   [list "Build pr24486c.so" \
 366    "-shared -Wl,--no-as-needed tmpdir/pr24486b.so" "-O2 -fpic" \
 367    {pr24486c.c} {} "pr24486c.so" "c"] \
 368   [list "PR ld/24486" \
 369    "-O2 -flto tmpdir/pr24486a.o tmpdir/pr24486c.so -Wl,--as-needed tmpdir/pr24486b.so" "" \
 370    {dummy.c} {} "pr24486.exe"] \
 371   [list "Build pr25593a-1.o" \
 372    "$plug_opt" "-flto -O2" \
 373    {pr25593a-1.c} {} "" "c"] \
 374   [list "Build pr25593a-2.o" \
 375    "" "-O2" \
 376    {pr25593a-2.c} {} "" "c"] \
 377   [list "Build pr25593b.o" \
 378    "" "-O2" \
 379    {pr25593b.c} {} "" "c"] \
 380   [list "Build pr25593c.so" \
 381    "-shared" "-O2 -fpic" \
 382    {pr25593c.c} {} "pr25593c.so" "c"] \
 383   [list "Build pr25593d.so" \
 384    "-shared" "-O2 -fpic" \
 385    {pr25593d.c} {} "pr25593d.so" "c"] \
 386   [list "Build pr25593e.so" \
 387    "-shared" "-O2 -fpic" \
 388    {pr25593e.c} {} "pr25593e.so" "c"] \
 389   [list "PR ld/r25593 (LTO)" \
 390    "-O2 -flto -Wl,--as-needed tmpdir/pr25593a-1.o tmpdir/pr25593b.o \
 391     tmpdir/pr25593c.so tmpdir/pr25593d.so tmpdir/pr25593e.so" "" \
 392    {dummy.c} {{readelf {-d --wide} pr25593.d}} "pr25593a.exe"] \
 393   [list "PR ld/r25593" \
 394    "-O2 -flto -Wl,--as-needed tmpdir/pr25593a-2.o tmpdir/pr25593b.o \
 395     tmpdir/pr25593c.so tmpdir/pr25593d.so tmpdir/pr25593e.so" "" \
 396    {dummy.c} {{readelf {-d --wide} pr25593.d}} "pr25593b.exe"] \
 397   [list "Build pr25618a.o" \
 398    "$plug_opt" "-O2 -flto -fpic" \
 399    {pr25618a.cc} {} "" "c++"] \
 400   [list "Build pr25618.a" \
 401    "$plug_opt" "-O2 -flto -fpic" \
 402    {pr25618b.cc} {} "pr25618.a" "c++"] \
 403   [list "Build pr25618.so" \
 404    "-shared -Wl,--exclude-libs,ALL tmpdir/pr25618a.o tmpdir/pr25618.a" \
 405    "-fpic" \
 406    {dummy.c} {{readelf {--dyn-syms --wide} pr25618.d}} "pr25618.so" "c++"] \
 407 ]
 408
 409 # PR 14918 checks that libgcc is not spuriously included in a shared link of
 410 # an empty program.  The ARM crt1.o startup code however calls __libc_csu_init
 411 # in /usr/lib/libc_nonshared.a(elf-init.oS).  This in turn needs
 412 # __aeabi_unwind_cpp_pr0@@GCC_3.5 which is provided by libgcc_s.so.1, so the
 413 # test fails.  Hence this code to skip the test.
 414 if { ! [istarget "arm*-*-*"] } {
 415     set lto_link_elf_tests [concat $lto_link_elf_tests [list \
 416   [list "PR ld/14918" \
 417    "-flto" "-flto" \
 418    {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"] \
 419   ]]
 420 }
 421
 422 # PR 12982 checks that an executable stack is not created by default
 423 # when using the LTO plugin.  The HPPA target however requires an
 424 # executable stack for syscall restarts and signal returns, so we
 425 # skip this test for that target.
 426 if { ! [istarget "hppa*-*-*"] } {
 427     set lto_link_elf_tests [concat $lto_link_elf_tests [list \
 428   [list "PR ld/12982" \
 429    "-O2 -flto -fuse-linker-plugin" "-O2 -flto" \
 430    {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"] \
 431   ]]
 432 }
 433
 434 # Check final symbols in executables.
 435 set lto_link_symbol_tests [list \
 436   [list "LTO 3 symbol" \
 437    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 438    {dummy.c} {{"nm" {} "lto-3.d"}} "lto-3.exe" "c"] \
 439   [list "LTO 5 symbol" \
 440    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 441    {dummy.c} {{"nm" {} "lto-5.d"}} "lto-5.exe" "c"] \
 442   [list "LTO 9 symbol" \
 443    "-O2 -flto -fuse-linker-plugin tmpdir/lto-9.o" "" \
 444    {dummy.c} {{"nm" {-C} "lto-9.d"}} "lto-9.exe" "c++"] \
 445   [list "LTO 16a symbol" \
 446    "-O2 $NOSANITIZE_CFLAGS -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin" \
 447    "-flto $NOSANITIZE_CFLAGS" \
 448    {lto-16a.c} {{"nm" {} "lto-16a.d"}} "lto-16.exe" "c"] \
 449   [list "LTO 16b symbol" \
 450    "-O2 $NOSANITIZE_CFLAGS -Wl,-e,foo -u bar -nostdlib -flto -fuse-linker-plugin" \
 451    "-flto $NOSANITIZE_CFLAGS" \
 452    {lto-16a.c lto-16b.c} {{"nm" {} "lto-16b.d"}} "lto-16b.exe" "c"] \
 453   [list "PR ld/13183" \
 454    "-O2 -flto -fuse-linker-plugin tmpdir/pr13183b.o tmpdir/libpr13183.a" "" \
 455    {dummy.c} {{"nm" {} "pr13183.d"}} "pr13183.exe" "c"] \
 456 ]
 457
 458 # LTO run-time tests.
 459 set lto_run_tests [list \
 460   [list "LTO 3a" \
 461    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 462    {dummy.c} "lto-3b.exe" "lto-3.out" "" "c"] \
 463   [list "LTO 3b" \
 464    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/lto-3.o" "" \
 465    {dummy.c} "lto-3c.exe" "lto-3.out" "" "c"] \
 466   [list "LTO 3c" \
 467    "-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" "" \
 468    {dummy.c} "lto-3d.exe" "lto-3.out" "" "c"] \
 469   [list "LTO 5" \
 470    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 471    {dummy.c} "lto-5.exe" "lto-5.out" "" "c"] \
 472   [list "LTO 11" \
 473    "-O -flto -fuse-linker-plugin tmpdir/liblto-11.a" "" \
 474    {dummy.c} "lto-11.exe" "lto-11.out" "" "c"] \
 475   [list "LTO 12a" \
 476    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/liblto-12.a tmpdir/lto-12b.o" "" \
 477    {dummy.c} "lto-12a.exe" "lto-12.out" "" "c"] \
 478   [list "LTO 12b" \
 479    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/lto-12b.o tmpdir/liblto-12.a" "" \
 480    {dummy.c} "lto-12b.exe" "lto-12.out" "" "c"] \
 481   [list "LTO 13" \
 482    "-O -flto -fuse-linker-plugin tmpdir/lto-13a.o tmpdir/liblto-13.a tmpdir/lto-13b.o" "" \
 483    {dummy.c} "lto-13.exe" "lto-13.out" "" "c"] \
 484   [list "LTO 14" \
 485    "-O2 -flto -fuse-linker-plugin tmpdir/lto-14a.o -Wl,--whole-archive tmpdir/liblto-14.a -Wl,--no-whole-archive tmpdir/lto-14b.o" "" \
 486    {dummy.c} "lto-14.exe" "lto-14.out" "" "c"] \
 487   [list "LTO 15" \
 488    "-O2 -flto -fuse-linker-plugin -Wl,--start-group tmpdir/liblto-15.a tmpdir/lto-15a.o -Wl,--end-group" "" \
 489    {dummy.c} "lto-15.exe" "lto-15.out" "" "c"] \
 490   [list "PR ld/13066" \
 491    "-O2 -flto -fuse-linker-plugin" "" \
 492    {pr13066.cc} "pr13066.exe" "pr13066.out" "" "c++"] \
 493   [list "PR ld/13201" \
 494    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr13201.o -lm" "" \
 495    {dummy.c} "pr13201.exe" "pr13201.out" "" "c"] \
 496   [list "PR ld/15323 (3)" \
 497    "-O2 -flto -fuse-linker-plugin tmpdir/pr15323a.o" "" \
 498    {pr15323b.c} "pr15323.exe" "pr15323.out" "-flto -O2" "c"] \
 499   [list "PR ld/15323 (4)" \
 500    "-O2 -flto tmpdir/pr15323a-r.o" "" \
 501    {dummy.c} "pr15323a.exe" "pr15323.out" "-flto -O2" "c"] \
 502   [list "PR ld/19317 (3)" \
 503    "-O2 -flto tmpdir/pr19317-r.o" "" \
 504    {dummy.c} "pr19317.exe" "pr19317.out" "-flto -O2" "c"] \
 505   [list "Run pr20276" \
 506    "-O2 -flto tmpdir/pr20276a.o tmpdir/pr20276b.o" "" \
 507    {dummy.c} "pr20276" "pass.out" "-flto -O2" "c"] \
 508   [list "Run pr20267a" \
 509    "-O2 -flto -fcommon tmpdir/pr20267a.o tmpdir/libpr20267a.a" "" \
 510    {dummy.c} "pr20267a" "pass.out" "-flto -O2 -fcommon" "c"] \
 511   [list "Run pr20267b" \
 512    "-O2 -flto -fcommon tmpdir/pr20267a.o tmpdir/libpr20267b.a" "" \
 513    {dummy.c} "pr20267b" "pass.out" "-flto -O2 -fcommon" "c"] \
 514   [list "Run pr22502" \
 515    "-O2 -flto tmpdir/pr22502a.o tmpdir/pr22502b.o" "" \
 516    {dummy.c} "pr20267" "pass.out" "-flto -O2 -fcommon" "c"] \
 517   [list "Run pr22751" \
 518    "-O2 -flto" "" \
 519    {dummy.c} "pr22751" "pass.out" "-flto -O2" "c" "" \
 520    "-Wl,--whole-archive tmpdir/pr22751.a -Wl,--no-whole-archive"] \
 521   [list "Run pr24406-1" \
 522    "-O2 -flto" "" \
 523    {pr24406-1.c} "pr24406-1" "pass.out" "-flto -O2" "c" "" \
 524    "-Wl,--wrap=read"] \
 525   [list "Run pr24406-2" \
 526    "-O2 -flto" "" \
 527    {pr24406-2a.c} "pr24406-2" "pass.out" \
 528    "-flto -O2" "c" "" \
 529    "tmpdir/pr24406-2b.o -Wl,--wrap=cook"] \
 530   [list "Run pr26163" \
 531    "-O2 -flto" "" \
 532    {pr26163b.c} "pr24406-2" "pass.out" \
 533    "-flto -O2" "c" "" \
 534    "tmpdir/pr26163a.o -Wl,--defsym,g=real_g"] \
 535   [list "Run pr26262a" \
 536    "-O2 -flto" "" \
 537    {pr26262a.c} "pr26262a" "pass.out" \
 538    "-flto -O2" "c" "" \
 539    "tmpdir/pr26262b.o tmpdir/pr26262c.o"] \
 540   [list "Run pr26262b" \
 541    "-flto -O2 tmpdir/pr26262b.o tmpdir/pr26262c.o" "" \
 542    {pr26262a.c} "pr26262b" "pass.out" \
 543    "-flto -O2" "c" "" \
 544    ""] \
 545 ]
 546
 547 if { [at_least_gcc_version 4 7] } {
 548     set lto_run_tests [concat $lto_run_tests [list \
 549       [list "PR ld/12942 (1)" \
 550        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942b.o" "" \
 551        {dummy.c} "pr12942a.exe" "pr12942.out" "" "c++"] \
 552       [list "PR ld/12942 (2)" \
 553        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942c.o" "" \
 554        {dummy.c} "pr12942c.exe" "pr12942.out" "" "c++"] \
 555     ]]
 556 }
 557
 558 # LTO run-time tests for ELF which require shared library support.
 559 set lto_run_elf_shared_tests [list \
 560   [list "LTO 7" \
 561    "-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" "" \
 562    {dummy.c} "lto-7.exe" "lto-7.out" "" "c"] \
 563   [list "Run pr21382" \
 564    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr21382a.o tmpdir/pr21382.so" "" \
 565    {dummy.c} "pr21382.exe" "pass.out" "" "c"] \
 566   [list {pr22220a} \
 567    {-flto -fuse-linker-plugin tmpdir/pr22220main.o tmpdir/pr22220lib.so} {} \
 568    {dummy.c} {pr22220a.exe} {pass.out} {} {c++}] \
 569   [list {pr22220b} \
 570    {-flto -fuse-linker-plugin -Wl,--no-as-needed tmpdir/pr22220lib.so tmpdir/pr22220main.o} {} \
 571    {dummy.c} {pr22220b.exe} {pass.out} {} {c++}] \
 572 ]
 573
 574 # LTO run-time tests for ELF
 575 set lto_run_elf_tests [list \
 576   [list "LTO 8" \
 577    "-O2 -flto -fuse-linker-plugin tmpdir/lto-8b.o tmpdir/lto-8a.o" "" \
 578    {dummy.c} "lto-8.exe" "lto-8.out" "" "c"] \
 579   [list "LTO TLS IE" \
 580    "-O2 -flto -fuse-linker-plugin" "" \
 581    {run-ie.c} "run-ie.exe" "run-ie.out" "" "c"] \
 582 ]
 583
 584 run_cc_link_tests $lto_link_tests
 585
 586 # These compilation tests generate intermediate object files which will be used
 587 # by some elf tests besides shared libs tests.  So, always compile them.
 588 run_cc_link_tests $lto_compile_elf_tests
 589
 590 # Restrict these to ELF targets that support shared libs and PIC.
 591 if { [is_elf_format] && [check_lto_shared_available] } {
 592     run_cc_link_tests $lto_link_elf_tests
 593     set testname "PR ld/16746 (3)"
 594     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746b.o tmpdir/pr16746d.o"]
 595     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 596         pass $testname
 597     } {
 598         fail $testname
 599     }
 600     set testname "PR ld/16746 (4)"
 601     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746d.o tmpdir/pr16746b.o"]
 602     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 603         pass $testname
 604     } {
 605         fail $testname
 606     }
 607 }
 608
 609 set testname "Build liblto-11.a"
 610 remote_file host delete "tmpdir/liblto-11.a"
 611 set catch_output [run_host_cmd "$ar" "rc $plug_opt tmpdir/liblto-11.a tmpdir/lto-11a.o tmpdir/lto-11b.o tmpdir/lto-11c.o"]
 612 if {![string match "" $catch_output]} {
 613     unresolved $testname
 614     restore_notify
 615     return
 616 }
 617
 618 if { [at_least_gcc_version 4 7] } {
 619     # Check expected LTO linker errors.
 620     # Since the asm symbol name hack in pr12365b.c doesn't work on all
 621     # targets, run PR ld/12365 tests only for known targets.
 622     if { ([istarget "i?86-*-elf*"]
 623            || [istarget "i?86-*-linux*"]
 624            || [istarget "i?86-*-gnu*"]
 625            || [istarget "x86_64-*-linux*"]
 626            || [istarget "amd64-*-linux*"]) } {
 627         set testname "PR ld/12365"
 628         set exec_output [run_host_cmd "$CC" "-O2 -flto -flto-partition=none -fuse-linker-plugin -o tmpdir/pr12365 tmpdir/pr12365a.o tmpdir/pr12365b.o tmpdir/pr12365c.o"]
 629         set exec_output [prune_warnings $exec_output]
 630         if { [ regexp "undefined reference to `my_bcopy'" $exec_output ] } {
 631             # Linker should catch the reference to undefined `my_bcopy'
 632             # error caused by a GCC bug.
 633             pass $testname
 634         } elseif { [ string match "" $exec_output ] } {
 635             global READELF
 636             set exec_output [run_host_cmd "$READELF" "-s -W tmpdir/pr12365"]
 637             if { [ regexp "my_bcopy" $exec_output ] } {
 638                 # Verify that there is no `my_bcopy' symbol in executable.
 639                 fail $testname
 640             } {
 641                 pass $testname
 642             }
 643         } {
 644             fail $testname
 645         }
 646
 647         run_cc_link_tests [list \
 648             [list \
 649                 "Build pr22721a.so" \
 650                 "-shared $NOSANITIZE_CFLAGS -nostdlib -nostartfiles \
 651                  -Wl,-version-script,pr22721.t" \
 652                 "" \
 653                 {pr22721a.s} \
 654                 {} \
 655                 "pr22721a.so" \
 656             ] \
 657             [list \
 658                 "Build pr22721b.o" \
 659                 "$plug_opt $NOSANITIZE_CFLAGS" \
 660                 "-O2 -fPIC -flto $lto_no_fat" \
 661                 {pr22721b.c} \
 662             ] \
 663             [list \
 664                 "Build PR ld/pr22721" \
 665                 "-O2 -flto -fuse-linker-plugin -nostdlib -nostartfiles \
 666                  $NOSANITIZE_CFLAGS \
 667                  -Wl,-e,_start tmpdir/pr22721b.o tmpdir/pr22721a.so" \
 668                 "$NOSANITIZE_CFLAGS" \
 669                 {dummy.c} \
 670                 {} \
 671                 "pr22721.exe"
 672             ] \
 673         ]
 674     }
 675     set testname "PR ld/12942 (3)"
 676     set exec_output [run_host_cmd "$CXX" "-O2 -flto -fuse-linker-plugin tmpdir/pr12942b.o tmpdir/pr12942a.o"]
 677     if { [ regexp "undefined reference to `\\.?link_error\\(\\)'" $exec_output ] } {
 678         pass $testname
 679     } {
 680         fail $testname
 681     }
 682
 683     run_cc_link_tests [list \
 684         [list \
 685             "Build pr23460*.o" \
 686             "$plug_opt" \
 687             "-O2 -fPIC -flto $lto_no_fat" \
 688             {pr23460a.c pr23460b.c pr23460c.c \
 689              pr23460d.c pr23460e.c pr23460f.c} \
 690         ] \
 691     ]
 692     set exec_output [run_host_cmd "sh" \
 693                                   "-c \"ulimit -n 16; \
 694                                    $ar -rc $plug_opt \
 695                                    tmpdir/libpr23460.a \
 696                                    tmpdir/pr23460a.o \
 697                                    tmpdir/pr23460b.o \
 698                                    tmpdir/pr23460c.o \
 699                                    tmpdir/pr23460d.o \
 700                                    tmpdir/pr23460e.o \
 701                                    tmpdir/pr23460f.o\""]
 702     set exec_output [prune_warnings $exec_output]
 703     if [string match "" $exec_output] then {
 704         pass "PR binutils/23460"
 705     } else {
 706         fail "PR binutils/23460"
 707     }
 708 }
 709
 710 # Run "ld -r" to generate inputs for complex LTO tests.
 711 run_dump_test "lto-3r"
 712 remote_exec host "mv" "tmpdir/dump tmpdir/lto-3.o"
 713 run_dump_test "lto-5r"
 714 remote_exec host "mv" "tmpdir/dump tmpdir/lto-5.o"
 715
 716 run_cc_link_tests $lto_link_symbol_tests
 717
 718 run_ld_link_tests [list \
 719   [list "PR ld/19317 (2)" \
 720    "-r tmpdir/pr19317.o" "" "" \
 721    {dummy.s} {} "pr19317-r.o"] \
 722 ]
 723
 724 run_ld_link_exec_tests $lto_run_tests
 725
 726 if { [is_elf_format] } {
 727     run_ld_link_exec_tests $lto_run_elf_tests
 728
 729     # Note - it is not guaranteed that the ordering of symbols in the dynamic
 730     # symbol table will match the ordering of the symbols specified by the
 731     # --dynamic-list command line option.
 732     #
 733     # For PR22983 we want to make sure that all four symbols specified in
 734     # pr222983.t are present in the output, but a simple sequences of regexps
 735     # will not work as we do not know the order of the symbols.  (Readelf
 736     # does not have a symbol sorting option and the run_cc_list_tests proc
 737     # does not allow for the output of the dump program to piped into `sort`).
 738     #
 739     # So instead we run readelf four times, each time checking for the
 740     # presence of a specific symbol from the pr22983.t file.
 741     run_cc_link_tests [list \
 742         [list \
 743             "Build pr22983" \
 744             "-Wl,--dynamic-list,pr22983.t" \
 745             "-flto" \
 746              {pr22983a.c pr22983b.c} \
 747             {{readelf {--dyn-syms --wide} pr22983.1.d} \
 748              {readelf {--dyn-syms --wide} pr22983.2.d} \
 749              {readelf {--dyn-syms --wide} pr22983.3.d} \
 750              {readelf {--dyn-syms --wide} pr22983.4.d}} \
 751             "pr22983" \
 752         ] \
 753     ]
 754 }
 755
 756 if { [is_elf_format] && [check_lto_shared_available] } {
 757     run_ld_link_exec_tests $lto_run_elf_shared_tests
 758 }
 759
 760 proc pr20103 {cflags libs} {
 761     global CC
 762
 763     set testname "PR ld/20103 ($cflags $libs)"
 764     set exec_output [run_host_cmd "$CC" "$cflags $libs"]
 765     if { [ regexp "undefined reference to `\\.?dead'" $exec_output ] } {
 766         pass "$testname (1)"
 767     } {
 768         fail "$testname (1)"
 769     }
 770     if { [ regexp "plugin needed to handle lto object" $exec_output ] } {
 771         fail "$testname (2)"
 772     } {
 773         pass "$testname (2)"
 774     }
 775 }
 776
 777 if { [check_lto_fat_available] } {
 778     run_cc_link_tests [list \
 779         [list \
 780             "Build fatpr20103a.a" \
 781             "$plug_opt" "-flto -ffat-lto-objects" \
 782             {pr20103a.c} {} "fatpr20103a.a"
 783         ] \
 784         [list \
 785             "Build fatpr20103b.a" \
 786             "$plug_opt" "-flto -ffat-lto-objects" \
 787             {pr20103b.c} {} "fatpr20103b.a"
 788         ] \
 789         [list \
 790             "Build fatpr20103c.a" \
 791             "$plug_opt" "-flto -ffat-lto-objects" \
 792             {pr20103c.c} {} "fatpr20103c.a" \
 793         ] \
 794         [list \
 795             "Build thinpr20103a.a" \
 796             "$plug_opt" "-flto -fno-fat-lto-objects" \
 797             {pr20103a.c} {} "thinpr20103a.a"
 798         ] \
 799         [list \
 800             "Build thinpr20103b.a" \
 801             "$plug_opt" "-flto -fno-fat-lto-objects" \
 802             {pr20103b.c} {} "thinpr20103b.a"
 803         ] \
 804         [list \
 805             "Build thinpr20103c.a" \
 806             "$plug_opt" "-flto -fno-fat-lto-objects" \
 807             {pr20103c.c} {} "thinpr20103c.a" \
 808         ] \
 809         [list \
 810             "Build pr20103a" \
 811             "-O2 -flto -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 812             "-O2 -flto" \
 813             {dummy.c} {} "pr20103a" \
 814         ] \
 815         [list \
 816             "Build pr20103b" \
 817             "-O2 -flto -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 818             "-O2 -flto" \
 819             {dummy.c} {} "pr20103b" \
 820         ] \
 821         [list \
 822             "Build pr20103c" \
 823             "-O2 -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 824             "-O2" \
 825             {dummy.c} {} "pr20103c" \
 826         ] \
 827     ]
 828     pr20103 "-O2 -flto" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 829     pr20103 "-O2 -flto" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 830     pr20103 "-O2" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 831
 832     if { [at_least_gcc_version 4 9] } {
 833         run_cc_link_tests [list \
 834             [list \
 835                 "Build pr20103d" \
 836                 "-O2 -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 837                 "-O2" \
 838                 {dummy.c} {} "pr20103d" \
 839             ] \
 840         ]
 841         pr20103 "-O2" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 842     }
 843 }
 844
 845 restore_notify