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