binutils-gdb/ld/testsuite/ld-x86-64/pr22782b.d

#source: pr22782.s
#as: --x32
#ld: -melf32_x86_64
#readelf: -SWs

#failif
#...
[ 	]*\[.*\][ 	]+.*\.got\.plt .*
#...
.* _GLOBAL_OFFSET_TABLE_
#...
x86: Remove the unused _GLOBAL_OFFSET_TABLE_ Since _GLOBAL_OFFSET_TABLE_ may be referenced implicitly on x86, checking ref_regular_nonweak leaves the unused _GLOBAL_OFFSET_TABLE_ in output. This patch checks explicit GOT references instead. ld-i386/discarded1.s and ld-x86-64/discarded1.s are updated to avoid linker optimization which removes GOT references. bfd/ PR ld/22782 * elf32-i386.c (elf_i386_check_relocs): Set got_referenced if _GLOBAL_OFFSET_TABLE_ is referenced or GOT is needed to resolve undefined weak symbol to 0. * elf64-x86-64.c (elf_x86_64_check_relocs): Set got_referenced if _GLOBAL_OFFSET_TABLE_ is referenced. * elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Check got_referenced instead of ref_regular_nonweak. Remove the unused _GLOBAL_OFFSET_TABLE_ from symbol table. * elfxx-x86.h (elf_x86_link_hash_table): Add got_referenced. ld/ PR ld/22782 * testsuite/ld-i386/discarded1.s: Replace mov with div. * testsuite/ld-x86-64/discarded1.s: Likewise. * testsuite/ld-i386/i386.exp: Run pr22782. * testsuite/ld-i386/load1-nacl.d: Updated for removing _GLOBAL_OFFSET_TABLE_ from output. * testsuite/ld-i386/load1.d: Likewise. * testsuite/ld-x86-64/load1a-nacl.d: Likewise. * testsuite/ld-x86-64/load1a.d: Likewise. * testsuite/ld-x86-64/load1b-nacl.d: Likewise. * testsuite/ld-x86-64/load1b.d: Likewise. * testsuite/ld-i386/pr22782.d: New file. * testsuite/ld-i386/pr22782.s: Likewise. * testsuite/ld-x86-64/pr22782.s: Likewise. * testsuite/ld-x86-64/pr22782a.d: Likewise. * testsuite/ld-x86-64/pr22782b.d: Likewise. * testsuite/ld-x86-64/x86-64.exp: Run pr22782a and pr22782b. 2018-02-06 00:38:16 +08:00			`#source: pr22782.s`
			`#as: --x32`
			`#ld: -melf32_x86_64`
			`#readelf: -SWs`

			`#failif`
			`#...`
			`[ ]\[.\][ ]+.\.got\.plt .`
			`#...`
			`.* _GLOBAL_OFFSET_TABLE_`
			`#...`