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 $NOSANTIZE_CFLAGS" \
  75    {lto-2.c} {} ""] \
  76   [list "LTO 2" \
  77    "-static -O2 -flto -fuse-linker-plugin tmpdir/lto-2.o -lm" \
  78    "$NOSANTIZE_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 $NOSANTIZE_CFLAGS" \
 142    {pr12758b.c} {} "libpr12758.a"] \
 143   [list "PR ld/12758" \
 144    "$NOPIE_LDFLAGS -O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12758a.o -Wl,--start-group tmpdir/libpr12758.a -Wl,--end-group" \
 145    "$NOSANTIZE_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 $lto_fat" \
 309    {pr12760b.c} {} "libpr12760.a"] \
 310   [list "PR ld/12760" \
 311    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin tmpdir/pr12760a.o -Wl,--start-group tmpdir/libpr12760.a -Wl,--end-group" "" \
 312    {dummy.c} {{warning "pr12760a.c:6: warning: Bad \\.?bar"}} \
 313    "pr12760.exe" "c"] \
 314   [list "PR ld/12975" \
 315    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib -Wl,-version-script,pr12975.t" "-O2 -flto" \
 316    {pr12975.c} {{"readelf" {-s --wide} "pr12975.d"}} "pr12975.so" "c"] \
 317   [list "PR ld/13229" \
 318    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -finline -fno-early-inlining -flto" \
 319    {pr13229.cc} {{"readelf" {-s --wide} "pr13229.d"}} "pr13229.so" "c++"] \
 320   [list "PR ld/13244" \
 321    "-shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib" "-O2 -fno-early-inlining -flto" \
 322    {pr13244.c} {{"readelf" {-s --wide} "pr13244.d"}} "pr13244.so" "c"] \
 323   [list "Build libpr15146a.a" \
 324    "$plug_opt" "-flto -O2" \
 325    {pr15146a.c} {} "lib15146a.a"] \
 326   [list "Build pr15146b.so" \
 327    "-shared" "-O2 -fpic" \
 328    {pr15146b.c} {} "pr15146b.so" "c"] \
 329   [list "Build pr15146c.so" \
 330    "-shared -Wl,--no-as-needed tmpdir/pr15146b.so" "-O2 -fpic $no_lto" \
 331    {pr15146c.c} {} "pr15146c.so" "c"] \
 332   [list "PR ld/15146 (1)" \
 333    "-O2 -flto -fuse-linker-plugin -Wl,-rpath-link,. -Wl,--no-copy-dt-needed-entries -Wl,--no-as-needed tmpdir/pr15146a.o tmpdir/pr15146c.so" "" \
 334    {dummy.c} {{"readelf" {-d} "pr15146.d"}} "pr15146a.exe"] \
 335   [list "Build libpr15146d.a" \
 336    "$plug_opt" "-flto -O2" \
 337    {pr15146d.c} {} "lib15146d.a"] \
 338   [list "Build libpr16746a.a" \
 339    "" "" \
 340    {pr16746a.c pr16746b.c} {} "lib15146a.a"] \
 341   [list "Build libpr16746b.a" \
 342    "$plug_opt" "-O2 -flto" \
 343    {pr16746c.c pr16746d.c} {} "lib15146b.a"] \
 344   [list "PR ld/16746 (1)" \
 345    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746a.o tmpdir/pr16746c.o" "-O2 -flto" \
 346    {dummy.c} {} "pr16746a.exe"] \
 347   [list "PR ld/16746 (2)" \
 348    "-O2 -flto -fuse-linker-plugin tmpdir/pr16746c.o tmpdir/pr16746a.o" "-O2 -flto" \
 349    {dummy.c} {} "pr16746b.exe"] \
 350   [list "Build pr21382a.o" \
 351    "" "-O2 -flto" \
 352    {pr21382a.c} {} "" "c"] \
 353   [list "Build pr21382.so" \
 354    "-shared" "-O2 -fpic" \
 355    {pr21382b.c} {} "pr21382.so" "c"] \
 356   [list {Build pr22220lib.so} \
 357    {-shared -Wl,--version-script=pr22220lib.ver} {-fPIC} \
 358    {pr22220lib.cc} {} {pr22220lib.so} {c++}] \
 359   [list {Build pr22220main.o} \
 360    {} {-flto} \
 361    {pr22220main.cc} {} {} {c++}] \
 362   [list "Build libpr23818.so" \
 363    "-shared -flto -g -Wl,-version-script,pr23818.t" \
 364    "-g -flto $lto_fat" \
 365    {pr23818a.c pr23818b.c} \
 366    {{"readelf" {-s --wide} "pr23818.d"}} \
 367    "libpr23818.so"] \
 368   [list "Build libpr23958.so" \
 369    "-shared -flto -Wl,-version-script,pr23958.t" \
 370    "-g -flto $lto_fat" \
 371    {pr23958.c} \
 372    "" \
 373    "libpr23958.so"] \
 374   [list "Build pr24486a.o" \
 375    "$plug_opt" "-flto -O2" \
 376    {pr24486a.c} {} "" "c"] \
 377   [list "Build pr24486b.so" \
 378    "-shared" "-O2 -fpic" \
 379    {pr24486b.c} {} "pr24486b.so" "c"] \
 380   [list "Build pr24486c.so" \
 381    "-shared -Wl,--no-as-needed tmpdir/pr24486b.so" "-O2 -fpic" \
 382    {pr24486c.c} {} "pr24486c.so" "c"] \
 383   [list "PR ld/24486" \
 384    "-O2 -flto tmpdir/pr24486a.o tmpdir/pr24486c.so -Wl,--as-needed tmpdir/pr24486b.so" "" \
 385    {dummy.c} {} "pr24486.exe"] \
 386   [list "Build pr25593a-1.o" \
 387    "$plug_opt" "-flto -O2" \
 388    {pr25593a-1.c} {} "" "c"] \
 389   [list "Build pr25593a-2.o" \
 390    "" "-O2" \
 391    {pr25593a-2.c} {} "" "c"] \
 392   [list "Build pr25593b.o" \
 393    "" "-O2" \
 394    {pr25593b.c} {} "" "c"] \
 395   [list "Build pr25593c.so" \
 396    "-shared" "-O2 -fpic" \
 397    {pr25593c.c} {} "pr25593c.so" "c"] \
 398   [list "Build pr25593d.so" \
 399    "-shared" "-O2 -fpic" \
 400    {pr25593d.c} {} "pr25593d.so" "c"] \
 401   [list "Build pr25593e.so" \
 402    "-shared" "-O2 -fpic" \
 403    {pr25593e.c} {} "pr25593e.so" "c"] \
 404   [list "PR ld/r25593 (LTO)" \
 405    "-O2 -flto -Wl,--as-needed tmpdir/pr25593a-1.o tmpdir/pr25593b.o \
 406     tmpdir/pr25593c.so tmpdir/pr25593d.so tmpdir/pr25593e.so" "" \
 407    {dummy.c} {{readelf {-d --wide} pr25593.d}} "pr25593a.exe"] \
 408   [list "PR ld/r25593" \
 409    "-O2 -flto -Wl,--as-needed tmpdir/pr25593a-2.o tmpdir/pr25593b.o \
 410     tmpdir/pr25593c.so tmpdir/pr25593d.so tmpdir/pr25593e.so" "" \
 411    {dummy.c} {{readelf {-d --wide} pr25593.d}} "pr25593b.exe"] \
 412   [list "Build pr25618a.o" \
 413    "$plug_opt" "-O2 -flto -fpic" \
 414    {pr25618a.cc} {} "" "c++"] \
 415   [list "Build pr25618.a" \
 416    "$plug_opt" "-O2 -flto -fpic" \
 417    {pr25618b.cc} {} "pr25618.a" "c++"] \
 418   [list "Build pr25618.so" \
 419    "-shared -Wl,--exclude-libs,ALL tmpdir/pr25618a.o tmpdir/pr25618.a" \
 420    "-fpic" \
 421    {dummy.c} {{readelf {--dyn-syms --wide} pr25618.d}} "pr25618.so" "c++"] \
 422 ]
 423
 424 # PR 14918 checks that libgcc is not spuriously included in a shared link of
 425 # an empty program.  The ARM crt1.o startup code however calls __libc_csu_init
 426 # in /usr/lib/libc_nonshared.a(elf-init.oS).  This in turn needs
 427 # __aeabi_unwind_cpp_pr0@@GCC_3.5 which is provided by libgcc_s.so.1, so the
 428 # test fails.  Hence this code to skip the test.
 429 if { ! [istarget "arm*-*-*"] } {
 430     set lto_link_elf_tests [concat $lto_link_elf_tests [list \
 431   [list "PR ld/14918" \
 432    "-flto" "-flto" \
 433    {pr14918.c} {{"readelf" {-d --wide} "pr14918.d"}} "pr14918.exe" "c"] \
 434   ]]
 435 }
 436
 437 # PR 12982 checks that an executable stack is not created by default
 438 # when using the LTO plugin.  The HPPA target however requires an
 439 # executable stack for syscall restarts and signal returns, so we
 440 # skip this test for that target.
 441 if { ! [istarget "hppa*-*-*"] } {
 442     set lto_link_elf_tests [concat $lto_link_elf_tests [list \
 443   [list "PR ld/12982" \
 444    "-O2 -flto -fuse-linker-plugin" "-O2 -flto" \
 445    {pr12982.c} {{"readelf" {-l --wide} "pr12982.d"}} "pr12982.exe"] \
 446   ]]
 447 }
 448
 449 # Check final symbols in executables.
 450 set lto_link_symbol_tests [list \
 451   [list "LTO 3 symbol" \
 452    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 453    {dummy.c} {{"nm" {} "lto-3.d"}} "lto-3.exe" "c"] \
 454   [list "LTO 5 symbol" \
 455    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 456    {dummy.c} {{"nm" {} "lto-5.d"}} "lto-5.exe" "c"] \
 457   [list "LTO 9 symbol" \
 458    "-O2 -flto -fuse-linker-plugin tmpdir/lto-9.o" "" \
 459    {dummy.c} {{"nm" {-C} "lto-9.d"}} "lto-9.exe" "c++"] \
 460   [list "LTO 16a symbol" \
 461    "-O2 -Wl,-e,foo -nostdlib -flto -fuse-linker-plugin" "-flto" \
 462    {lto-16a.c} {{"nm" {} "lto-16a.d"}} "lto-16.exe" "c"] \
 463   [list "LTO 16b symbol" \
 464    "-O2 -Wl,-e,foo -u bar -nostdlib -flto -fuse-linker-plugin" "-flto" \
 465    {lto-16a.c lto-16b.c} {{"nm" {} "lto-16b.d"}} "lto-16b.exe" "c"] \
 466   [list "PR ld/13183" \
 467    "-O2 -flto -fuse-linker-plugin tmpdir/pr13183b.o tmpdir/libpr13183.a" "" \
 468    {dummy.c} {{"nm" {} "pr13183.d"}} "pr13183.exe" "c"] \
 469 ]
 470
 471 # LTO run-time tests.
 472 set lto_run_tests [list \
 473   [list "LTO 3a" \
 474    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/liblto-3.a" "" \
 475    {dummy.c} "lto-3b.exe" "lto-3.out" "" "c"] \
 476   [list "LTO 3b" \
 477    "-O2 -flto -fuse-linker-plugin tmpdir/lto-3a.o tmpdir/lto-3c.o tmpdir/lto-3.o" "" \
 478    {dummy.c} "lto-3c.exe" "lto-3.out" "" "c"] \
 479   [list "LTO 3c" \
 480    "-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" "" \
 481    {dummy.c} "lto-3d.exe" "lto-3.out" "" "c"] \
 482   [list "LTO 5" \
 483    "-O2 -flto -fuse-linker-plugin tmpdir/lto-5.o" "" \
 484    {dummy.c} "lto-5.exe" "lto-5.out" "" "c"] \
 485   [list "LTO 11" \
 486    "-O -flto -fuse-linker-plugin tmpdir/liblto-11.a" "" \
 487    {dummy.c} "lto-11.exe" "lto-11.out" "" "c"] \
 488   [list "LTO 12a" \
 489    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/liblto-12.a tmpdir/lto-12b.o" "" \
 490    {dummy.c} "lto-12a.exe" "lto-12.out" "" "c"] \
 491   [list "LTO 12b" \
 492    "-O -flto -fuse-linker-plugin tmpdir/lto-12a.o tmpdir/lto-12b.o tmpdir/liblto-12.a" "" \
 493    {dummy.c} "lto-12b.exe" "lto-12.out" "" "c"] \
 494   [list "LTO 13" \
 495    "-O -flto -fuse-linker-plugin tmpdir/lto-13a.o tmpdir/liblto-13.a tmpdir/lto-13b.o" "" \
 496    {dummy.c} "lto-13.exe" "lto-13.out" "" "c"] \
 497   [list "LTO 14" \
 498    "-O2 -flto -fuse-linker-plugin tmpdir/lto-14a.o -Wl,--whole-archive tmpdir/liblto-14.a -Wl,--no-whole-archive tmpdir/lto-14b.o" "" \
 499    {dummy.c} "lto-14.exe" "lto-14.out" "" "c"] \
 500   [list "LTO 15" \
 501    "-O2 -flto -fuse-linker-plugin -Wl,--start-group tmpdir/liblto-15.a tmpdir/lto-15a.o -Wl,--end-group" "" \
 502    {dummy.c} "lto-15.exe" "lto-15.out" "" "c"] \
 503   [list "PR ld/13066" \
 504    "-O2 -flto -fuse-linker-plugin" "" \
 505    {pr13066.cc} "pr13066.exe" "pr13066.out" "" "c++"] \
 506   [list "PR ld/13201" \
 507    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr13201.o -lm" "" \
 508    {dummy.c} "pr13201.exe" "pr13201.out" "" "c"] \
 509   [list "PR ld/15323 (3)" \
 510    "-O2 -flto -fuse-linker-plugin tmpdir/pr15323a.o" "" \
 511    {pr15323b.c} "pr15323.exe" "pr15323.out" "-flto -O2" "c"] \
 512   [list "PR ld/15323 (4)" \
 513    "-O2 -flto tmpdir/pr15323a-r.o" "" \
 514    {dummy.c} "pr15323a.exe" "pr15323.out" "-flto -O2" "c"] \
 515   [list "PR ld/19317 (3)" \
 516    "-O2 -flto tmpdir/pr19317-r.o" "" \
 517    {dummy.c} "pr19317.exe" "pr19317.out" "-flto -O2" "c"] \
 518   [list "Run pr20276" \
 519    "-O2 -flto tmpdir/pr20276a.o tmpdir/pr20276b.o" "" \
 520    {dummy.c} "pr20276" "pass.out" "-flto -O2" "c"] \
 521   [list "Run pr20267a" \
 522    "-O2 -flto -fcommon tmpdir/pr20267a.o tmpdir/libpr20267a.a" "" \
 523    {dummy.c} "pr20267a" "pass.out" "-flto -O2 -fcommon" "c"] \
 524   [list "Run pr20267b" \
 525    "-O2 -flto -fcommon tmpdir/pr20267a.o tmpdir/libpr20267b.a" "" \
 526    {dummy.c} "pr20267b" "pass.out" "-flto -O2 -fcommon" "c"] \
 527   [list "Run pr22502" \
 528    "-O2 -flto tmpdir/pr22502a.o tmpdir/pr22502b.o" "" \
 529    {dummy.c} "pr20267" "pass.out" "-flto -O2 -fcommon" "c"] \
 530   [list "Run pr22751" \
 531    "-O2 -flto" "" \
 532    {dummy.c} "pr22751" "pass.out" "-flto -O2" "c" "" \
 533    "-Wl,--whole-archive tmpdir/pr22751.a -Wl,--no-whole-archive"] \
 534   [list "Run pr24406-1" \
 535    "-O2 -flto" "" \
 536    {pr24406-1.c} "pr24406-1" "pass.out" "-flto -O2" "c" "" \
 537    "-Wl,--wrap=read"] \
 538   [list "Run pr24406-2" \
 539    "-O2 -flto" "" \
 540    {pr24406-2a.c} "pr24406-2" "pass.out" \
 541    "-flto -O2" "c" "" \
 542    "tmpdir/pr24406-2b.o -Wl,--wrap=cook"] \
 543   [list "Run pr26163" \
 544    "-O2 -flto" "" \
 545    {pr26163b.c} "pr24406-2" "pass.out" \
 546    "-flto -O2" "c" "" \
 547    "tmpdir/pr26163a.o -Wl,--defsym,g=real_g"] \
 548   [list "Run pr26262a" \
 549    "-O2 -flto" "" \
 550    {pr26262a.c} "pr26262a" "pass.out" \
 551    "-flto -O2" "c" "" \
 552    "tmpdir/pr26262b.o tmpdir/pr26262c.o"] \
 553   [list "Run pr26262b" \
 554    "-flto -O2 tmpdir/pr26262b.o tmpdir/pr26262c.o" "" \
 555    {pr26262a.c} "pr26262b" "pass.out" \
 556    "-flto -O2" "c" "" \
 557    ""] \
 558 ]
 559
 560 if { [at_least_gcc_version 4 7] } {
 561     set lto_run_tests [concat $lto_run_tests [list \
 562       [list "PR ld/12942 (1)" \
 563        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942b.o" "" \
 564        {dummy.c} "pr12942a.exe" "pr12942.out" "" "c++"] \
 565       [list "PR ld/12942 (2)" \
 566        "-O2 -flto -fuse-linker-plugin tmpdir/pr12942a.o tmpdir/pr12942c.o" "" \
 567        {dummy.c} "pr12942c.exe" "pr12942.out" "" "c++"] \
 568     ]]
 569 }
 570
 571 # LTO run-time tests for ELF which require shared library support.
 572 set lto_run_elf_shared_tests [list \
 573   [list "LTO 7" \
 574    "-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" "" \
 575    {dummy.c} "lto-7.exe" "lto-7.out" "" "c"] \
 576   [list "Run pr21382" \
 577    "-O2 -flto -fuse-linker-plugin -Wl,--as-needed tmpdir/pr21382a.o tmpdir/pr21382.so" "" \
 578    {dummy.c} "pr21382.exe" "pass.out" "" "c"] \
 579   [list {pr22220a} \
 580    {-flto -fuse-linker-plugin tmpdir/pr22220main.o tmpdir/pr22220lib.so} {} \
 581    {dummy.c} {pr22220a.exe} {pass.out} {} {c++}] \
 582   [list {pr22220b} \
 583    {-flto -fuse-linker-plugin -Wl,--no-as-needed tmpdir/pr22220lib.so tmpdir/pr22220main.o} {} \
 584    {dummy.c} {pr22220b.exe} {pass.out} {} {c++}] \
 585 ]
 586
 587 # LTO run-time tests for ELF
 588 set lto_run_elf_tests [list \
 589   [list "LTO 8" \
 590    "-O2 -flto -fuse-linker-plugin tmpdir/lto-8b.o tmpdir/lto-8a.o" "" \
 591    {dummy.c} "lto-8.exe" "lto-8.out" "" "c"] \
 592   [list "LTO TLS IE" \
 593    "-O2 -flto -fuse-linker-plugin" "" \
 594    {run-ie.c} "run-ie.exe" "run-ie.out" "" "c"] \
 595 ]
 596
 597 run_cc_link_tests $lto_link_tests
 598
 599 # These compilation tests generate intermediate object files which will be used
 600 # by some elf tests besides shared libs tests.  So, always compile them.
 601 run_cc_link_tests $lto_compile_elf_tests
 602
 603 # Restrict these to ELF targets that support shared libs and PIC.
 604 if { [is_elf_format] && [check_lto_shared_available] } {
 605     run_cc_link_tests $lto_link_elf_tests
 606     set testname "PR ld/15146 (2)"
 607     set exec_output [run_host_cmd "$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"]
 608     if { [ regexp "undefined reference to symbol '\\.?xxx'" $exec_output ] } {
 609         pass $testname
 610     } {
 611         fail $testname
 612     }
 613     set testname "PR ld/16746 (3)"
 614     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746b.o tmpdir/pr16746d.o"]
 615     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 616         pass $testname
 617     } {
 618         fail $testname
 619     }
 620     set testname "PR ld/16746 (4)"
 621     set exec_output [run_host_cmd "$CC" "-O2 -flto -fuse-linker-plugin tmpdir/pr16746d.o tmpdir/pr16746b.o"]
 622     if { [ regexp "warning: \\.?foobar" $exec_output ] && ![ regexp "symbol from plugin" $exec_output ] } {
 623         pass $testname
 624     } {
 625         fail $testname
 626     }
 627 }
 628
 629 set testname "Build liblto-11.a"
 630 remote_file host delete "tmpdir/liblto-11.a"
 631 set catch_output [run_host_cmd "$ar" "rc $plug_opt tmpdir/liblto-11.a tmpdir/lto-11a.o tmpdir/lto-11b.o tmpdir/lto-11c.o"]
 632 if {![string match "" $catch_output]} {
 633     unresolved $testname
 634     restore_notify
 635     return
 636 }
 637
 638 if { [at_least_gcc_version 4 7] } {
 639     # Check expected LTO linker errors.
 640     # Since the asm symbol name hack in pr12365b.c doesn't work on all
 641     # targets, run PR ld/12365 tests only for known targets.
 642     if { ([istarget "i?86-*-elf*"]
 643            || [istarget "i?86-*-linux*"]
 644            || [istarget "i?86-*-gnu*"]
 645            || [istarget "x86_64-*-linux*"]
 646            || [istarget "amd64-*-linux*"]) } {
 647         set testname "PR ld/12365"
 648         set exec_output [run_host_cmd "$CC" "-O2 -flto -flto-partition=none -fuse-linker-plugin -o tmpdir/pr12365 tmpdir/pr12365a.o tmpdir/pr12365b.o tmpdir/pr12365c.o"]
 649         set exec_output [prune_warnings $exec_output]
 650         if { [ regexp "undefined reference to `my_bcopy'" $exec_output ] } {
 651             # Linker should catch the reference to undefined `my_bcopy'
 652             # error caused by a GCC bug.
 653             pass $testname
 654         } elseif { [ string match "" $exec_output ] } {
 655             global READELF
 656             set exec_output [run_host_cmd "$READELF" "-s -W tmpdir/pr12365"]
 657             if { [ regexp "my_bcopy" $exec_output ] } {
 658                 # Verify that there is no `my_bcopy' symbol in executable.
 659                 fail $testname
 660             } {
 661                 pass $testname
 662             }
 663         } {
 664             fail $testname
 665         }
 666
 667         run_cc_link_tests [list \
 668             [list \
 669                 "Build pr22721a.so" \
 670                 "-shared -nostdlib -nostartfiles -Wl,-version-script,pr22721.t" \
 671                 "" \
 672                 {pr22721a.s} \
 673                 {} \
 674                 "pr22721a.so" \
 675             ] \
 676             [list \
 677                 "Build pr22721b.o" \
 678                 "$plug_opt" \
 679                 "-O2 -fPIC -flto $lto_no_fat" \
 680                 {pr22721b.c} \
 681             ] \
 682             [list \
 683                 "Build PR ld/pr22721" \
 684                 "-O2 -flto -fuse-linker-plugin -nostdlib -nostartfiles \
 685                 -Wl,-e,_start tmpdir/pr22721b.o tmpdir/pr22721a.so" \
 686                 "" \
 687                 {dummy.c} \
 688                 {} \
 689                 "pr22721.exe"
 690             ] \
 691         ]
 692     }
 693     set testname "PR ld/12942 (3)"
 694     set exec_output [run_host_cmd "$CXX" "-O2 -flto -fuse-linker-plugin tmpdir/pr12942b.o tmpdir/pr12942a.o"]
 695     if { [ regexp "undefined reference to `\\.?link_error\\(\\)'" $exec_output ] } {
 696         pass $testname
 697     } {
 698         fail $testname
 699     }
 700
 701     run_cc_link_tests [list \
 702         [list \
 703             "Build pr23460*.o" \
 704             "$plug_opt" \
 705             "-O2 -fPIC -flto $lto_no_fat" \
 706             {pr23460a.c pr23460b.c pr23460c.c \
 707              pr23460d.c pr23460e.c pr23460f.c} \
 708         ] \
 709     ]
 710     set exec_output [run_host_cmd "sh" \
 711                                   "-c \"ulimit -n 16; \
 712                                    $ar -rc $plug_opt \
 713                                    tmpdir/libpr23460.a \
 714                                    tmpdir/pr23460a.o \
 715                                    tmpdir/pr23460b.o \
 716                                    tmpdir/pr23460c.o \
 717                                    tmpdir/pr23460d.o \
 718                                    tmpdir/pr23460e.o \
 719                                    tmpdir/pr23460f.o\""]
 720     set exec_output [prune_warnings $exec_output]
 721     if [string match "" $exec_output] then {
 722         pass "PR binutils/23460"
 723     } else {
 724         fail "PR binutils/23460"
 725     }
 726 }
 727
 728 # Run "ld -r" to generate inputs for complex LTO tests.
 729 run_dump_test "lto-3r"
 730 remote_exec host "mv" "tmpdir/dump tmpdir/lto-3.o"
 731 run_dump_test "lto-5r"
 732 remote_exec host "mv" "tmpdir/dump tmpdir/lto-5.o"
 733
 734 run_cc_link_tests $lto_link_symbol_tests
 735
 736 run_ld_link_tests [list \
 737   [list "PR ld/19317 (2)" \
 738    "-r tmpdir/pr19317.o" "" "" \
 739    {dummy.s} {} "pr19317-r.o"] \
 740 ]
 741
 742 run_ld_link_exec_tests $lto_run_tests
 743
 744 if { [is_elf_format] } {
 745     run_ld_link_exec_tests $lto_run_elf_tests
 746
 747     # Note - it is not guaranteed that the ordering of symbols in the dynamic
 748     # symbol table will match the ordering of the symbols specified by the
 749     # --dynamic-list command line option.
 750     #
 751     # For PR22983 we want to make sure that all four symbols specified in
 752     # pr222983.t are present in the output, but a simple sequences of regexps
 753     # will not work as we do not know the order of the symbols.  (Readelf
 754     # does not have a symbol sorting option and the run_cc_list_tests proc
 755     # does not allow for the output of the dump program to piped into `sort`).
 756     #
 757     # So instead we run readelf four times, each time checking for the
 758     # presence of a specific symbol from the pr22983.t file.
 759     run_cc_link_tests [list \
 760         [list \
 761             "Build pr22983" \
 762             "-Wl,--dynamic-list,pr22983.t" \
 763             "-flto" \
 764              {pr22983a.c pr22983b.c} \
 765             {{readelf {--dyn-syms --wide} pr22983.1.d} \
 766              {readelf {--dyn-syms --wide} pr22983.2.d} \
 767              {readelf {--dyn-syms --wide} pr22983.3.d} \
 768              {readelf {--dyn-syms --wide} pr22983.4.d}} \
 769             "pr22983" \
 770         ] \
 771     ]
 772 }
 773
 774 if { [is_elf_format] && [check_lto_shared_available] } {
 775     run_ld_link_exec_tests $lto_run_elf_shared_tests
 776 }
 777
 778 proc pr20103 {cflags libs} {
 779     global CC
 780
 781     set testname "PR ld/20103 ($cflags $libs)"
 782     set exec_output [run_host_cmd "$CC" "$cflags $libs"]
 783     if { [ regexp "undefined reference to `\\.?dead'" $exec_output ] } {
 784         pass "$testname (1)"
 785     } {
 786         fail "$testname (1)"
 787     }
 788     if { [ regexp "plugin needed to handle lto object" $exec_output ] } {
 789         fail "$testname (2)"
 790     } {
 791         pass "$testname (2)"
 792     }
 793 }
 794
 795 if { [check_lto_fat_available] } {
 796     run_cc_link_tests [list \
 797         [list \
 798             "Build fatpr20103a.a" \
 799             "$plug_opt" "-flto -ffat-lto-objects" \
 800             {pr20103a.c} {} "fatpr20103a.a"
 801         ] \
 802         [list \
 803             "Build fatpr20103b.a" \
 804             "$plug_opt" "-flto -ffat-lto-objects" \
 805             {pr20103b.c} {} "fatpr20103b.a"
 806         ] \
 807         [list \
 808             "Build fatpr20103c.a" \
 809             "$plug_opt" "-flto -ffat-lto-objects" \
 810             {pr20103c.c} {} "fatpr20103c.a" \
 811         ] \
 812         [list \
 813             "Build thinpr20103a.a" \
 814             "$plug_opt" "-flto -fno-fat-lto-objects" \
 815             {pr20103a.c} {} "thinpr20103a.a"
 816         ] \
 817         [list \
 818             "Build thinpr20103b.a" \
 819             "$plug_opt" "-flto -fno-fat-lto-objects" \
 820             {pr20103b.c} {} "thinpr20103b.a"
 821         ] \
 822         [list \
 823             "Build thinpr20103c.a" \
 824             "$plug_opt" "-flto -fno-fat-lto-objects" \
 825             {pr20103c.c} {} "thinpr20103c.a" \
 826         ] \
 827         [list \
 828             "Build pr20103a" \
 829             "-O2 -flto -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 830             "-O2 -flto" \
 831             {dummy.c} {} "pr20103a" \
 832         ] \
 833         [list \
 834             "Build pr20103b" \
 835             "-O2 -flto -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 836             "-O2 -flto" \
 837             {dummy.c} {} "pr20103b" \
 838         ] \
 839         [list \
 840             "Build pr20103c" \
 841             "-O2 -Wl,--start-group tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a -Wl,--end-group" \
 842             "-O2" \
 843             {dummy.c} {} "pr20103c" \
 844         ] \
 845     ]
 846     pr20103 "-O2 -flto" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 847     pr20103 "-O2 -flto" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 848     pr20103 "-O2" "tmpdir/fatpr20103a.a tmpdir/fatpr20103b.a tmpdir/fatpr20103c.a"
 849
 850     if { [at_least_gcc_version 4 9] } {
 851         run_cc_link_tests [list \
 852             [list \
 853                 "Build pr20103d" \
 854                 "-O2 -Wl,--start-group tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a -Wl,--end-group" \
 855                 "-O2" \
 856                 {dummy.c} {} "pr20103d" \
 857             ] \
 858         ]
 859         pr20103 "-O2" "tmpdir/thinpr20103a.a tmpdir/thinpr20103b.a tmpdir/thinpr20103c.a"
 860     }
 861 }
 862
 863 restore_notify