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 lto_fat ""
  45 set lto_no_fat ""
  46 if { [check_lto_fat_available] } {
  47   set lto_fat "-ffat-lto-objects"
  48   set lto_no_fat "-fno-fat-lto-objects"
  49   set no_lto "-fno-lto"
  50 }
  51
  52 # Simple LTO tests and generate input files for complex LTO tests.
  53 set lto_link_tests [list \
  54   [list "LTO 1" \
  55    "-O2 -flto -fuse-linker-plugin" "-flto -fuse-linker-plugin" \
  56    {lto-1a.c lto-1b.c} {} "lto-1.exe"] \
  57   [list "Compile 2" \
  58    "" "-O2 -flto -fuse-linker-plugin $NOSANITIZE_CFLAGS" \
  59    {lto-2.c} {} ""] \
  60   [list "LTO 2" \
  61    "-static -O2 -flto -fuse-linker-plugin tmpdir/lto-2.o -lm" \
  62    "$NOSANITIZE_CFLAGS" \
  63    {dummy.c} {} "lto-2.exe"] \
  64   [list "Compile 3a" \
  65    "" "-flto" \
  66    {lto-3a.c} {} ""] \
  67   [list "Compile 3c" \
  68    "" "-O2" \
  69    {lto-3c.c} {} ""] \
  70   [list "Build liblto-3.a" \
  71    "" "-flto $lto_fat" \
  72    {lto-3b.c} {} "liblto-3.a"] \
  73   [list "Compile 5a" \
  74    "" "-flto $lto_fat" \
  75    {lto-5a.c} {} ""] \
  76   [list "Compile 5b" \
  77    "" "-flto $lto_fat" \
  78    {lto-5b.c} {} ""] \
  79   [list "Compile PR ld/12365" \
  80    "" "-flto -O2 $lto_fat" \
  81    {pr12365a.c pr12365b.c pr12365c.c} {} ""] \
  82   [list "Compile 9" \
  83    "" "-O2 -finline -flto" \
  84    {lto-9.cc} {} "" "c++"] \
  85   [list "Compile 11a" \
  86    "" "-O -flto" \
  87    {lto-11a.c} {} ""] \
  88   [list "Compile 11b" \
  89    "" "-O -flto" \
  90    {lto-11b.c} {} ""] \
  91   [list "Compile 11c" \
  92    "" "-O" \
  93    {lto-11c.c} {} ""] \
  94   [list "Build liblto-12.a" \
  95    "$plug_opt" "-O2 -flto" \
  96    {lto-12c.c} {} "liblto-12.a"] \
  97   [list "Compile 12" \
  98    "" "-O2 -flto" \
  99    {lto-12a.c lto-12b.c} {} ""] \
 100   [list "Compile 13" \
 101    "" "-O2 -flto" \
 102    {lto-13a.c lto-13b.c} {} ""] \
 103   [list "Build liblto-13.a" \
 104    "" "-O2" \
 105    {lto-13c.c} {} "liblto-13.a"] \
 106   [list "Compile 14a" \
 107    "" "-flto" \
 108    {lto-14a.c lto-14b.c} {} ""] \
 109   [list "Build liblto-14.a" \
 110    "$plug_opt" "-flto" \
 111    {lto-14c.c} {} "liblto-14.a"] \
 112   [list "Compile 15a" \
 113    "" "-flto" \
 114    {lto-15a.c} {} ""] \
 115   [list "Build liblto-15.a" \
 116    "$plug_opt" "-flto" \
 117    {lto-15b.c} {} "liblto-15.a"] \
 118   [list "PR ld/12696" \
 119    "-O2 -flto -fuse-linker-plugin -r -nostdlib" "-O2 -flto" \
 120    {pr12696-1.cc} {} "pr12696-1r.o" "c++"] \
 121   [list "Compile PR ld/12758" \
 122    "" "" \
 123    {pr12758a.s} {} ""] \
 124   [list "Build libpr12758.a" \
 125    "" "-flto -O2 $lto_fat $NOSANITIZE_CFLAGS" \
 126    {pr12758b.c} {} "libpr12758.a"] \
 127   [list "PR ld/12758" \
 128    "$NOPIE_LDFLAGS $NOSANITIZE_CFLAGS -O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12758a.o -Wl,--start-group tmpdir/libpr12758.a -Wl,--end-group" \
 129    "$NOSANITIZE_CFLAGS" \
 130    {dummy.c} {} "pr12758.exe"] \
 131   [list "Build libpr13183.a" \
 132    "-T" "-flto -O2 $lto_fat" \
 133    {pr13183a.c} {} "libpr13183.a"] \
 134   [list "Compile PR ld/13183" \
 135    "" "-flto -O2" \
 136    {pr13183b.c} {} ""] \
 137   [list "Compile PR ld/13201" \
 138    "" "-flto -O2" \
 139    {pr13201.c} {} ""] \
 140   [list "PR ld/13287" \
 141    "-flto -fuse-linker-plugin -Wl,--as-needed" "-flto" \
 142    {pr13287.cc} {} "pr13287.exe" "c++"] \
 143   [list "PR ld/15323 (1)" \
 144    "" "-O2" \
 145    {pr15323a.c} {} "" "c"] \
 146   [list "PR ld/15323 (2)" \
 147    "-O2 -flto -r -nostdlib" "-O2 -flto" \
 148    {pr15323a.c} {} "pr15323a-r.o" "c"] \
 149   [list "Compile(1) PR ld/pr16846" \
 150    "" "-flto" \
 151    {pr16846a.c pr16846b.c} {} ""] \
 152   [list "Compile(2) PR ld/pr16846" \
 153    "" "" \
 154    {pr16846c.c} {} ""] \
 155   [list "PR ld/pr16846(1)" \
 156    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846b.o tmpdir/pr16846c.o" "" \
 157    {dummy.c} {} "pr16846a.exe"] \
 158   [list "PR ld/pr16846(2)" \
 159    "-flto -fuse-linker-plugin tmpdir/pr16846a.o tmpdir/pr16846c.o tmpdir/pr16846b.o" "" \
 160    {dummy.c} {} "pr16846b.exe"] \
 161   [list "PR ld/19317 (1)" \
 162    "$plug_opt" "-flto $lto_no_fat" \
 163    {pr19317.c} {} "libpr19317.a"] \
 164   [list "Build pr20276a.o" \
 165    "" "-fno-lto -fcommon" \
 166    {pr20276a.c}] \
 167   [list "Build pr20276b.o" \
 168    "$plug_opt" "-flto $lto_no_fat -fcommon" \
 169    {pr20276b.c}] \
 170   [list "Build pr20267a.o" \
 171    "" "-fcommon" \
 172    {pr20267a.c}] \
 173   [list "Build libpr20267a.a" \
 174    "$plug_opt" "-flto $lto_fat -fcommon" \
 175    {pr20267b.c} {} "libpr20267a.a"] \
 176   [list "Build libpr20267b.a" \
 177    "$plug_opt" "-flto $lto_no_fat -fcommon" \
 178    {pr20267b.c} {} "libpr20267b.a"] \
 179   [list "Build pr20321" \
 180    "-flto -Wl,-plugin,$plug_so" "-flto" \
 181    {pr20321.c} {{warning ".*: duplicated plugin"}} \
 182    "pr20321" "c"] \
 183   [list "Build pr22502a.o" \
 184    "" "" \
 185    {pr22502a.c}] \
 186   [list "Build pr22502b.o" \
 187    "$plug_opt" "-flto $lto_no_fat" \
 188    {pr22502b.c}] \
 189   [list "Build pr22751.a" \
 190    "$plug_opt" "-flto $lto_no_fat $INT128_CFLAGS" \
 191    {pr22751.c} {} "pr22751.a"] \
 192   [list "Build pr24406-2b.o" \
 193    "" "-O2 -fno-lto" \
 194    {pr24406-2b.c}] \
 195   [list "Build pr26163a.o" \
 196    "" "-O2 -fno-lto" \
 197    {pr26163a.c}] \
 198   [list "Build pr26262b.o" \
 199    "" "-O2" \
 200    {pr26262b.c} {} "" "c"] \
 201   [list "Build pr26262c.o" \
 202    "" "-O2" \
 203    {pr26262c.c} {} "" "c"] \
 204   [list "Build pr26267a.o" \
 205    "" "-O2 -flto $lto_no_fat" \
 206    {pr26267a.c} {} "" "c"] \
 207   [list "Build pr26267b.o" \
 208    "" "-O2" \
 209    {pr26267b.c} {} "" "c"] \
 210   [list "Build pr26267c.o" \
 211    "" "-O2" \
 212    {pr26267c.c} {} "" "c"] \
 213   [list "Build pr26267a" \
 214    "" "-O2" \
 215    {pr26267a.c} {} "" "c"] \
 216   [list "Build pr26267a" \
 217    "-flto tmpdir/pr26267a.o tmpdir/pr26267b.o tmpdir/pr26267c.o" \
 218    "-flto $lto_no_fat" \
 219    {dummy.c} \
 220    {{error_output "pr26267.err"}} \
 221    "pr26267a"] \
 222   [list "Build pr26267b" \
 223    "-flto tmpdir/pr26267b.o tmpdir/pr26267c.o tmpdir/pr26267a.o" \
 224    "-flto $lto_no_fat" \
 225    {dummy.c} \
 226    {{error_output "pr26267.err"}} \
 227    "pr26267b"] \
 228   [list "Build pr26389.o" \
 229    "$plug_opt" "-flto $lto_no_fat -fcommon" \
 230    {pr26389.c} \
 231    [list [list "nm" "$plug_opt" "pr26389.d"]]] \
 232 ]
 233
 234 if { [at_least_gcc_version 10 0] } {
 235     set lto_link_tests [concat $lto_link_tests [list \
 236         [list "pr25355.o" \
 237          "" \
 238          "-flto -fno-common $lto_no_fat" \
 239          {pr25355.c} \
 240          [list [list "nm" "$plug_opt" "pr25355.d"]]] \
 241     ]]
 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 "LTO 6" \
 274    "-O2 -flto -fuse-linker-plugin" "" \
 275    {lto-6.c} {} "lto-6.exe" "c"] \
 276   [list "Build liblto-7.so" \
 277    "-shared" "-O2 -fpic" \
 278    {lto-7d.c} {} "liblto-7.so" "c"] \
 279   [list "Build liblto-17a.so" \
 280    "-shared -O2 -fpic -flto -fuse-linker-plugin" "-O2 -fpic -flto" \
 281    {lto-17a.c} {{"nm" {} "lto-17a.d"}} "liblto-17a.so" "c"] \
 282   [list "Build liblto-17b.so 1" \
 283    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 284    {lto-17b.c} {{"nm" {} "lto-17b-1.d"}} "liblto-17b.so"] \
 285   [list "Build liblto-17b.so 2" \
 286    "-shared -O2 -fpic -flto -fuse-linker-plugin tmpdir/lto-17a.o" "-O2 -fpic -flto" \
 287    {lto-17b.c} {{"nm" {} "lto-17b-2.d"}} "liblto-17b.so"] \
 288   [list "Compile PR ld/12760" \
 289    "" "-g -O0" \
 290    {pr12760a.c} {} ""] \
 291   [list "Build libpr12760.a" \
 292    "" "-flto -O2 $lto_fat" \
 293    {pr12760b.c} {} "libpr12760.a"] \
 294   [list "PR ld/12760" \
 295    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12760a.o -Wl,--start-group tmpdir/libpr12760.a -Wl,--end-group" "" \
 296    {dummy.c} {{warning "pr12760a.c:6: warning: Bad \\.?bar"}} \
 297    "pr12760.exe" "c"] \
 298   [list "PR ld/12975" \
 299    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib -Wl,-version-script,pr12975.t" "-O2 -flto" \
 300    {pr12975.c} {{"readelf" {-s --wide} "pr12975.d"}} "pr12975.so" "c"] \
 301   [list "PR ld/13229" \
 302    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -finline -fno-early-inlining -flto" \
 303    {pr13229.cc} {{"readelf" {-s --wide} "pr13229.d"}} "pr13229.so" "c++"] \
 304   [list "PR ld/13244" \
 305    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -fno-early-inlining -flto" \
 306    {pr13244.c} {{"readelf" {-s --wide} "pr13244.d"}} "pr13244.so" "c"] \
 307   [list "Build libpr16746a.a" \
 308    "" "" \
 309    {pr16746a.c pr16746b.c} {} "lib15146a.a"] \
 310   [list "Build libpr16746b.a" \
 311    "$plug_opt" "-O2 -flto" \
 312    {pr16746c.c pr16746d.c} {} "lib15146b.a"] \
 313   [list "PR ld/16746 (1)" \
 314    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746a.o tmpdir/pr16746c.o" "-O2 -flto" \
 315    {dummy.c} {} "pr16746a.exe"] \
 316   [list "PR ld/16746 (2)" \
 317    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746c.o tmpdir/pr16746a.o" "-O2 -flto" \
 318    {dummy.c} {} "pr16746b.exe"] \
 319   [list "Build pr21382a.o" \
 320    "" "-O2 -flto" \
 321    {pr21382a.c} {} "" "c"] \
 322   [list "Build pr21382.so" \
 323    "-shared" "-O2 -fpic" \
 324    {pr21382b.c} {} "pr21382.so" "c"] \
 325   [list {Build pr22220lib.so} \
 326    {-shared -Wl,--version-script=pr22220lib.ver} {-fPIC} \
 327    {pr22220lib.cc} {} {pr22220lib.so} {c++}] \
 328   [list {Build pr22220main.o} \
 329    {} {-flto} \
 330    {pr22220main.cc} {} {} {c++}] \
 331   [list "Build libpr23818.so" \
 332    "-shared -flto -g -Wl,-version-script,pr23818.t" \
 333    "-g -flto $lto_fat" \
 334    {pr23818a.c pr23818b.c} \
 335    {{"readelf" {-s --wide} "pr23818.d"}} \
 336    "libpr23818.so"] \
 337   [list "Build libpr23958.so" \
 338    "-shared -flto -Wl,-version-script,pr23958.t" \
 339    "-g -flto $lto_fat" \
 340    {pr23958.c} \
 341    "" \
 342    "libpr23958.so"] \
 343   [list "Build pr24486a.o" \
 344    "$plug_opt" "-flto -O2" \
 345    {pr24486a.c} {} "" "c"] \
 346   [list "Build pr24486b.so" \
 347    "-shared" "-O2 -fpic" \
 348    {pr24486b.c} {} "pr24486b.so" "c"] \
 349   [list "Build pr24486c.so" \
 350    "-shared -Wl,--no-as-needed tmpdir/pr24486b.so" "-O2 -fpic" \
 351    {pr24486c.c} {} "pr24486c.so" "c"] \
 352   [list "PR ld/24486" \
 353    "-O2 -flto tmpdir/pr24486a.o tmpdir/pr24486c.so -Wl,--as-needed tmpdir/pr24486b.so" "" \
 354    {dummy.c} {} "pr24486.exe"] \
 355   [list "Build pr25593a-1.o" \
 356    "$plug_opt" "-flto -O2" \
 357    {pr25593a-1.c} {} "" "c"] \
 358   [list "Build pr25593a-2.o" \
 359    "" "-O2" \
 360    {pr25593a-2.c} {} "" "c"] \
 361   [list "Build pr25593b.o" \
 362    "" "-O2" \
 363    {pr25593b.c} {} "" "c"] \
 364   [list "Build pr25593c.so" \
 365    "-shared" "-O2 -fpic" \
 366    {pr25593c.c} {} "pr25593c.so" "c"] \
 367   [list "Build pr25593d.so" \
 368    "-shared" "-O2 -fpic" \
 369    {pr25593d.c} {} "pr25593d.so" "c"] \
 370   [list "Build pr25593e.so" \
 371    "-shared" "-O2 -fpic" \
 372    {pr25593e.c} {} "pr25593e.so" "c"] \
 373   [list "PR ld/r25593 (LTO)" \
 374    "-O2 -flto -Wl,--as-needed tmpdir/pr25593a-1.o tmpdir/pr25593b.o \
 375     tmpdir/pr25593c.so tmpdir/pr25593d.so tmpdir/pr25593e.so" "" \
 376    {dummy.c} {{readelf {-d --wide} pr25593.d}} "pr25593a.exe"] \
 377   [list "PR ld/r25593" \
 378    "-O2 -flto -Wl,--as-needed tmpdir/pr25593a-2.o tmpdir/pr25593b.o \
 379     tmpdir/pr25593c.so tmpdir/pr25593d.so tmpdir/pr25593e.so" "" \
 380    {dummy.c} {{readelf {-d --wide} pr25593.d}} "pr25593b.exe"] \
 381   [list "Build pr25618a.o" \
 382    "$plug_opt" "-O2 -flto -fpic" \
 383    {pr25618a.cc} {} "" "c++"] \
 384   [list "Build pr25618.a" \
 385    "$plug_opt" "-O2 -flto -fpic" \
 386    {pr25618b.cc} {} "pr25618.a" "c++"] \
 387   [list "Build pr25618.so" \
 388    "-shared -Wl,--exclude-libs,ALL tmpdir/pr25618a.o tmpdir/pr25618.a" \
 389    "-fpic" \
 390    {dummy.c} {{readelf {--dyn-syms --wide} pr25618.d}} "pr25618.so" "c++"] \
 391   [list {liblto-18b.so} \
 392    {-shared} {-O2 -fpic} \
 393    {lto-18b.c} {} {liblto-18b.so}] \
 394   [list {liblto-18b.a} \
 395    "$plug_opt" {-flto -O2} \
 396    {lto-18b.c} {} {liblto-18b.a}] \
 397   [list {liblto-18c.so} \
 398    {-shared} {-O2 -fpic} \
 399    {lto-18c.c} {} {liblto-18c.so}] \
 400   [list {liblto-18c.a} \
 401    "$plug_opt" {-flto -O2} \
 402    {lto-18c.c} {} {liblto-18c.a}] \
 403   [list {lto-18d.o} \
 404    {} {-flto -O2} \
 405    {lto-18d.c} {} {}] \
 406 ]
 407
 408 # PR 14918 checks that libgcc is not spuriously included in a shared link of
 409 # an empty program.  The ARM crt1.o startup code however calls __libc_csu_init
 410 # in /usr/lib/libc_nonshared.a(elf-init.oS).  This in turn needs
 411 # __aeabi_unwind_cpp_pr0@@GCC_3.5 which is provided by libgcc_s.so.1, so the
 412 # test fails.  Hence this code to skip the test.
 413 if { ! [istarget "arm*-*-*"] } {
 414     lappend lto_link_elf_tests [list \
 415   [list "PR ld/14918" \
 416    "-flto" "-flto" \
 417    {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"] \
 418   ]
 419 }
 420
 421 # PR 12982 checks that an executable stack is not created by default
 422 # when using the LTO plugin.  The HPPA target however requires an
 423 # executable stack for syscall restarts and signal returns, so we
 424 # skip this test for that target.
 425 if { ! [istarget "hppa*-*-*"] } {
 426     lappend lto_link_elf_tests [list \
 427   [list "PR ld/12982" \
 428    "-O2 -flto -fuse-linker-plugin" "-O2 -flto" \
 429    {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"] \
 430   ]
 431 }
 432
 433 # Check final symbols in executables.
 434 set lto_link_symbol_tests [list \
 435   [list "LTO 3 symbol" \
 436    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 437    {dummy.c} {{"nm" {} "lto-3.d"}} "lto-3.exe" "c"] \
 438   [list "LTO 5 symbol" \
 439    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 440    {dummy.c} {{"nm" {} "lto-5.d"}} "lto-5.exe" "c"] \
 441   [list "LTO 9 symbol" \
 442    "-O2 -flto -fuse-linker-plugin tmpdir/lto-9.o" "" \
 443    {dummy.c} {{"nm" {-C} "lto-9.d"}} "lto-9.exe" "c++"] \
 444   [list "LTO 16a symbol" \
 445    "-O2 $NOSANITIZE_CFLAGS -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin" \
 446    "-flto $NOSANITIZE_CFLAGS" \
 447    {lto-16a.c} {{"nm" {} "lto-16a.d"}} "lto-16.exe" "c"] \
 448   [list "LTO 16b symbol" \
 449    "-O2 $NOSANITIZE_CFLAGS -Wl,-e,foo -u bar -nostdlib -flto -fuse-linker-plugin" \
 450    "-flto $NOSANITIZE_CFLAGS" \
 451    {lto-16a.c lto-16b.c} {{"nm" {} "lto-16b.d"}} "lto-16b.exe" "c"] \
 452   [list "PR ld/13183" \
 453    "-O2 -flto -fuse-linker-plugin tmpdir/pr13183b.o tmpdir/libpr13183.a" "" \
 454    {dummy.c} {{"nm" {} "pr13183.d"}} "pr13183.exe" "c"] \
 455 ]
 456
 457 # LTO run-time tests.
 458 set lto_run_tests [list \
 459   [list "LTO 3a" \
 460    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 461    {dummy.c} "lto-3b.exe" "lto-3.out" "" "c"] \
 462   [list "LTO 3b" \
 463    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/lto-3.o" "" \
 464    {dummy.c} "lto-3c.exe" "lto-3.out" "" "c"] \
 465   [list "LTO 3c" \
 466    "-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" "" \
 467    {dummy.c} "lto-3d.exe" "lto-3.out" "" "c"] \
 468   [list "LTO 5" \
 469    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 470    {dummy.c} "lto-5.exe" "lto-5.out" "" "c"] \
 471   [list "LTO 11" \
 472    "-O -flto -fuse-linker-plugin tmpdir/liblto-11.a" "" \
 473    {dummy.c} "lto-11.exe" "lto-11.out" "" "c"] \
 474   [list "LTO 12a" \
 475    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/liblto-12.a tmpdir/lto-12b.o" "" \
 476    {dummy.c} "lto-12a.exe" "lto-12.out" "" "c"] \
 477   [list "LTO 12b" \
 478    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/lto-12b.o tmpdir/liblto-12.a" "" \
 479    {dummy.c} "lto-12b.exe" "lto-12.out" "" "c"] \
 480   [list "LTO 13" \
 481    "-O -flto -fuse-linker-plugin tmpdir/lto-13a.o tmpdir/liblto-13.a tmpdir/lto-13b.o" "" \
 482    {dummy.c} "lto-13.exe" "lto-13.out" "" "c"] \
 483   [list "LTO 14" \
 484    "-O2 -flto -fuse-linker-plugin tmpdir/lto-14a.o -Wl,--whole-archive tmpdir/liblto-14.a -Wl,--no-whole-archive tmpdir/lto-14b.o" "" \
 485    {dummy.c} "lto-14.exe" "lto-14.out" "" "c"] \
 486   [list "LTO 15" \
 487    "-O2 -flto -fuse-linker-plugin -Wl,--start-group tmpdir/liblto-15.a tmpdir/lto-15a.o -Wl,--end-group" "" \
 488    {dummy.c} "lto-15.exe" "lto-15.out" "" "c"] \
 489   [list "PR ld/13066" \
 490    "-O2 -flto -fuse-linker-plugin" "" \
 491    {pr13066.cc} "pr13066.exe" "pr13066.out" "" "c++"] \
 492   [list "PR ld/13201" \
 493    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr13201.o -lm" "" \
 494    {dummy.c} "pr13201.exe" "pr13201.out" "" "c"] \
 495   [list "PR ld/15323 (3)" \
 496    "-O2 -flto -fuse-linker-plugin tmpdir/pr15323a.o" "" \
 497    {pr15323b.c} "pr15323.exe" "pr15323.out" "-flto -O2" "c"] \
 498   [list "PR ld/15323 (4)" \
 499    "-O2 -flto tmpdir/pr15323a-r.o" "" \
 500    {dummy.c} "pr15323a.exe" "pr15323.out" "-flto -O2" "c"] \
 501   [list "PR ld/19317 (3)" \
 502    "-O2 -flto tmpdir/pr19317-r.o" "" \
 503    {dummy.c} "pr19317.exe" "pr19317.out" "-flto -O2" "c"] \
 504   [list "Run pr20276" \
 505    "-O2 -flto tmpdir/pr20276a.o tmpdir/pr20276b.o" "" \
 506    {dummy.c} "pr20276" "pass.out" "-flto -O2" "c"] \
 507   [list "Run pr20267a" \
 508    "-O2 -flto -fcommon tmpdir/pr20267a.o tmpdir/libpr20267a.a" "" \
 509    {dummy.c} "pr20267a" "pass.out" "-flto -O2 -fcommon" "c"] \
 510   [list "Run pr20267b" \
 511    "-O2 -flto -fcommon tmpdir/pr20267a.o tmpdir/libpr20267b.a" "" \
 512    {dummy.c} "pr20267b" "pass.out" "-flto -O2 -fcommon" "c"] \
 513   [list "Run pr22502" \
 514    "-O2 -flto tmpdir/pr22502a.o tmpdir/pr22502b.o" "" \
 515    {dummy.c} "pr20267" "pass.out" "-flto -O2 -fcommon" "c"] \
 516   [list "Run pr22751" \
 517    "-O2 -flto" "" \
 518    {dummy.c} "pr22751" "pass.out" "-flto -O2" "c" "" \
 519    "-Wl,--whole-archive tmpdir/pr22751.a -Wl,--no-whole-archive"] \
 520   [list "Run pr24406-1" \
 521    "-O2 -flto" "" \
 522    {pr24406-1.c} "pr24406-1" "pass.out" "-flto -O2" "c" "" \
 523    "-Wl,--wrap=read"] \
 524   [list "Run pr24406-2" \
 525    "-O2 -flto" "" \
 526    {pr24406-2a.c} "pr24406-2" "pass.out" \
 527    "-flto -O2" "c" "" \
 528    "tmpdir/pr24406-2b.o -Wl,--wrap=cook"] \
 529   [list "Run pr26163" \
 530    "-O2 -flto" "" \
 531    {pr26163b.c} "pr24406-2" "pass.out" \
 532    "-flto -O2" "c" "" \
 533    "tmpdir/pr26163a.o -Wl,--defsym,g=real_g"] \
 534   [list "Run pr26262a" \
 535    "-O2 -flto" "" \
 536    {pr26262a.c} "pr26262a" "pass.out" \
 537    "-flto -O2" "c" "" \
 538    "tmpdir/pr26262b.o tmpdir/pr26262c.o"] \
 539   [list "Run pr26262b" \
 540    "-flto -O2 tmpdir/pr26262b.o tmpdir/pr26262c.o" "" \
 541    {pr26262a.c} "pr26262b" "pass.out" \
 542    "-flto -O2" "c" "" \
 543    ""] \
 544 ]
 545
 546 if { [at_least_gcc_version 4 7] } {
 547     set lto_run_tests [concat $lto_run_tests [list \
 548       [list "PR ld/12942 (1)" \
 549        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942b.o" "" \
 550        {dummy.c} "pr12942a.exe" "pr12942.out" "" "c++"] \
 551       [list "PR ld/12942 (2)" \
 552        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942c.o" "" \
 553        {dummy.c} "pr12942c.exe" "pr12942.out" "" "c++"] \
 554     ]]
 555 }
 556
 557 # LTO run-time tests for ELF which require shared library support.
 558 set lto_run_elf_shared_tests [list \
 559   [list "LTO 7" \
 560    "-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" "" \
 561    {dummy.c} "lto-7.exe" "lto-7.out" "" "c"] \
 562   [list "Run pr21382" \
 563    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr21382a.o tmpdir/pr21382.so" "" \
 564    {dummy.c} "pr21382.exe" "pass.out" "" "c"] \
 565   [list {pr22220a} \
 566    {-flto -fuse-linker-plugin tmpdir/pr22220main.o tmpdir/pr22220lib.so} {} \
 567    {dummy.c} {pr22220a.exe} {pass.out} {} {c++}] \
 568   [list {pr22220b} \
 569    {-flto -fuse-linker-plugin -Wl,--no-as-needed tmpdir/pr22220lib.so tmpdir/pr22220main.o} {} \
 570    {dummy.c} {pr22220b.exe} {pass.out} {} {c++}] \
 571   [list {lto-18 (1)} \
 572    {-flto -fuse-linker-plugin} {} \
 573    {lto-18a.c} {lto-18-1.exe} {lto-18.out} {-flto -O2} {c} {} \
 574    {tmpdir/lto-18d.o -Wl,--as-needed,-R,tmpdir -Ltmpdir -llto-18b -llto-18c}] \
 575   [list {lto-18 (2)} \
 576    {-flto -fuse-linker-plugin} {} \
 577    {lto-18a.c} {lto-18-2.exe} {lto-18.out} {-flto -O2} {c} {} \
 578    {-Wl,--as-needed,-R,tmpdir -Ltmpdir -llto-18b -llto-18c tmpdir/lto-18d.o}] \
 579   [list {lto-18 (3)} \
 580    {-static -flto -fuse-linker-plugin} {} \
 581    {lto-18a.c} {lto-18-3.exe} {lto-18.out} {-flto -O2} {c} {} \
 582    {tmpdir/lto-18d.o -Ltmpdir -llto-18b -llto-18c}] \
 583   [list {lto-18 (4)} \
 584    {-static -flto -fuse-linker-plugin} {} \
 585    {lto-18a.c} {lto-18-4.exe} {lto-18.out} {-flto -O2} {c} {} \
 586    { -Ltmpdir -llto-18b -llto-18c tmpdir/lto-18d.o}] \
 587 ]
 588
 589 # LTO run-time tests for ELF
 590 set lto_run_elf_tests [list \
 591   [list "LTO 8" \
 592    "-O2 -flto -fuse-linker-plugin tmpdir/lto-8b.o tmpdir/lto-8a.o" "" \
 593    {dummy.c} "lto-8.exe" "lto-8.out" "" "c"] \
 594   [list "LTO TLS IE" \
 595    "-O2 -flto -fuse-linker-plugin" "" \
 596    {run-ie.c} "run-ie.exe" "run-ie.out" "" "c"] \
 597 ]
 598
 599 run_cc_link_tests $lto_link_tests
 600
 601 # These compilation tests generate intermediate object files which will be used
 602 # by some elf tests besides shared libs tests.  So, always compile them.
 603 run_cc_link_tests $lto_compile_elf_tests
 604
 605 # Restrict these to ELF targets that support shared libs and PIC.
 606 if { [is_elf_format] && [check_lto_shared_available] } {
 607     run_cc_link_tests $lto_link_elf_tests
 608     set testname "PR ld/16746 (3)"
 609     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746b.o tmpdir/pr16746d.o"]
 610     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 611         pass $testname
 612     } {
 613         fail $testname
 614     }
 615     set testname "PR ld/16746 (4)"
 616     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746d.o tmpdir/pr16746b.o"]
 617     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 618         pass $testname
 619     } {
 620         fail $testname
 621     }
 622 }
 623
 624 set testname "Build liblto-11.a"
 625 remote_file host delete "tmpdir/liblto-11.a"
 626 set catch_output [run_host_cmd "$ar" "rc $plug_opt tmpdir/liblto-11.a tmpdir/lto-11a.o tmpdir/lto-11b.o tmpdir/lto-11c.o"]
 627 if {![string match "" $catch_output]} {
 628     unresolved $testname
 629     restore_notify
 630     return
 631 }
 632
 633 if { [at_least_gcc_version 4 7] } {
 634     # Check expected LTO linker errors.
 635     # Since the asm symbol name hack in pr12365b.c doesn't work on all
 636     # targets, run PR ld/12365 tests only for known targets.
 637     if { ([istarget "i?86-*-elf*"]
 638            || [istarget "i?86-*-linux*"]
 639            || [istarget "i?86-*-gnu*"]
 640            || [istarget "x86_64-*-linux*"]
 641            || [istarget "amd64-*-linux*"]) } {
 642         set testname "PR ld/12365"
 643         set exec_output [run_host_cmd "$CC" "-O2 -flto -flto-partition=none -fuse-linker-plugin -o tmpdir/pr12365 tmpdir/pr12365a.o tmpdir/pr12365b.o tmpdir/pr12365c.o"]
 644         set exec_output [prune_warnings $exec_output]
 645         if { [ regexp "undefined reference to `my_bcopy'" $exec_output ] } {
 646             # Linker should catch the reference to undefined `my_bcopy'
 647             # error caused by a GCC bug.
 648             pass $testname
 649         } elseif { [ string match "" $exec_output ] } {
 650             global READELF
 651             set exec_output [run_host_cmd "$READELF" "-s -W tmpdir/pr12365"]
 652             if { [ regexp "my_bcopy" $exec_output ] } {
 653                 # Verify that there is no `my_bcopy' symbol in executable.
 654                 fail $testname
 655             } {
 656                 pass $testname
 657             }
 658         } {
 659             fail $testname
 660         }
 661
 662         run_cc_link_tests [list \
 663             [list \
 664                 "Build pr22721a.so" \
 665                 "-shared $NOSANITIZE_CFLAGS -nostdlib -nostartfiles \
 666                  -Wl,-version-script,pr22721.t" \
 667                 "" \
 668                 {pr22721a.s} \
 669                 {} \
 670                 "pr22721a.so" \
 671             ] \
 672             [list \
 673                 "Build pr22721b.o" \
 674                 "$plug_opt $NOSANITIZE_CFLAGS" \
 675                 "-O2 -fPIC -flto $lto_no_fat" \
 676                 {pr22721b.c} \
 677             ] \
 678             [list \
 679                 "Build PR ld/pr22721" \
 680                 "-O2 -flto -fuse-linker-plugin -nostdlib -nostartfiles \
 681                  $NOSANITIZE_CFLAGS \
 682                  -Wl,-e,_start tmpdir/pr22721b.o tmpdir/pr22721a.so" \
 683                 "$NOSANITIZE_CFLAGS" \
 684                 {dummy.c} \
 685                 {} \
 686                 "pr22721.exe"
 687             ] \
 688         ]
 689     }
 690     set testname "PR ld/12942 (3)"
 691     set exec_output [run_host_cmd "$CXX" "-O2 -flto -fuse-linker-plugin tmpdir/pr12942b.o tmpdir/pr12942a.o"]
 692     if { [ regexp "undefined reference to `\\.?link_error\\(\\)'" $exec_output ] } {
 693         pass $testname
 694     } {
 695         fail $testname
 696     }
 697
 698     run_cc_link_tests [list \
 699         [list \
 700             "Build pr23460*.o" \
 701             "$plug_opt" \
 702             "-O2 -fPIC -flto $lto_no_fat" \
 703             {pr23460a.c pr23460b.c pr23460c.c \
 704              pr23460d.c pr23460e.c pr23460f.c} \
 705         ] \
 706     ]
 707     set exec_output [run_host_cmd "sh" \
 708                                   "-c \"ulimit -n 16; \
 709                                    $ar -rc $plug_opt \
 710                                    tmpdir/libpr23460.a \
 711                                    tmpdir/pr23460a.o \
 712                                    tmpdir/pr23460b.o \
 713                                    tmpdir/pr23460c.o \
 714                                    tmpdir/pr23460d.o \
 715                                    tmpdir/pr23460e.o \
 716                                    tmpdir/pr23460f.o\""]
 717     set exec_output [prune_warnings $exec_output]
 718     if [string match "" $exec_output] then {
 719         pass "PR binutils/23460"
 720     } else {
 721         fail "PR binutils/23460"
 722     }
 723 }
 724
 725 # Run "ld -r" to generate inputs for complex LTO tests.
 726 run_dump_test "lto-3r"
 727 remote_exec host "mv" "tmpdir/dump tmpdir/lto-3.o"
 728 run_dump_test "lto-5r"
 729 remote_exec host "mv" "tmpdir/dump tmpdir/lto-5.o"
 730
 731 run_cc_link_tests $lto_link_symbol_tests
 732
 733 run_ld_link_tests [list \
 734   [list "PR ld/19317 (2)" \
 735    "-r tmpdir/pr19317.o" "" "" \
 736    {dummy.s} {} "pr19317-r.o"] \
 737 ]
 738
 739 run_ld_link_exec_tests $lto_run_tests
 740
 741 if { [is_elf_format] } {
 742     run_ld_link_exec_tests $lto_run_elf_tests
 743
 744     # Note - it is not guaranteed that the ordering of symbols in the dynamic
 745     # symbol table will match the ordering of the symbols specified by the
 746     # --dynamic-list command line option.
 747     #
 748     # For PR22983 we want to make sure that all four symbols specified in
 749     # pr222983.t are present in the output, but a simple sequences of regexps
 750     # will not work as we do not know the order of the symbols.  (Readelf
 751     # does not have a symbol sorting option and the run_cc_list_tests proc
 752     # does not allow for the output of the dump program to piped into `sort`).
 753     #
 754     # So instead we run readelf four times, each time checking for the
 755     # presence of a specific symbol from the pr22983.t file.
 756     run_cc_link_tests [list \
 757         [list \
 758             "Build pr22983" \
 759             "-Wl,--dynamic-list,pr22983.t" \
 760             "-flto" \
 761              {pr22983a.c pr22983b.c} \
 762             {{readelf {--dyn-syms --wide} pr22983.1.d} \
 763              {readelf {--dyn-syms --wide} pr22983.2.d} \
 764              {readelf {--dyn-syms --wide} pr22983.3.d} \
 765              {readelf {--dyn-syms --wide} pr22983.4.d}} \
 766             "pr22983" \
 767         ] \
 768     ]
 769 }
 770
 771 if { [is_elf_format] && [check_lto_shared_available] } {
 772     run_ld_link_exec_tests $lto_run_elf_shared_tests
 773 }
 774
 775 proc pr20103 {cflags libs} {
 776     global CC
 777
 778     set testname "PR ld/20103 ($cflags $libs)"
 779     set exec_output [run_host_cmd "$CC" "$cflags $libs"]
 780     if { [ regexp "undefined reference to `\\.?dead'" $exec_output ] } {
 781         pass "$testname (1)"
 782     } {
 783         fail "$testname (1)"
 784     }
 785     if { [ regexp "plugin needed to handle lto object" $exec_output ] } {
 786         fail "$testname (2)"
 787     } {
 788         pass "$testname (2)"
 789     }
 790 }
 791
 792 if { [check_lto_fat_available] } {
 793     run_cc_link_tests [list \
 794         [list \
 795             "Build fatpr20103a.a" \
 796             "$plug_opt" "-flto -ffat-lto-objects" \
 797             {pr20103a.c} {} "fatpr20103a.a"
 798         ] \
 799         [list \
 800             "Build fatpr20103b.a" \
 801             "$plug_opt" "-flto -ffat-lto-objects" \
 802             {pr20103b.c} {} "fatpr20103b.a"
 803         ] \
 804         [list \
 805             "Build fatpr20103c.a" \
 806             "$plug_opt" "-flto -ffat-lto-objects" \
 807             {pr20103c.c} {} "fatpr20103c.a" \
 808         ] \
 809         [list \
 810             "Build thinpr20103a.a" \
 811             "$plug_opt" "-flto -fno-fat-lto-objects" \
 812             {pr20103a.c} {} "thinpr20103a.a"
 813         ] \
 814         [list \
 815             "Build thinpr20103b.a" \
 816             "$plug_opt" "-flto -fno-fat-lto-objects" \
 817             {pr20103b.c} {} "thinpr20103b.a"
 818         ] \
 819         [list \
 820             "Build thinpr20103c.a" \
 821             "$plug_opt" "-flto -fno-fat-lto-objects" \
 822             {pr20103c.c} {} "thinpr20103c.a" \
 823         ] \
 824         [list \
 825             "Build pr20103a" \
 826             "-O2 -flto -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 827             "-O2 -flto" \
 828             {dummy.c} {} "pr20103a" \
 829         ] \
 830         [list \
 831             "Build pr20103b" \
 832             "-O2 -flto -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 833             "-O2 -flto" \
 834             {dummy.c} {} "pr20103b" \
 835         ] \
 836         [list \
 837             "Build pr20103c" \
 838             "-O2 -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 839             "-O2" \
 840             {dummy.c} {} "pr20103c" \
 841         ] \
 842     ]
 843     pr20103 "-O2 -flto" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 844     pr20103 "-O2 -flto" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 845     pr20103 "-O2" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 846
 847     if { [at_least_gcc_version 4 9] } {
 848         run_cc_link_tests [list \
 849             [list \
 850                 "Build pr20103d" \
 851                 "-O2 -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 852                 "-O2" \
 853                 {dummy.c} {} "pr20103d" \
 854             ] \
 855         ]
 856         pr20103 "-O2" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 857     }
 858 }
 859
 860 restore_notify