[Bug ld/19739] ld.bfd performance regression

[address@hidden]

https://sourceware.org/bugzilla/show_bug.cgi?id=19739

Jan Smets <address@hidden> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|mips-wrs-vxworks            |mips-wrs-vxworks,x86_64
           Severity|normal                      |critical

--- Comment #4 from Jan Smets <address@hidden> ---
Same issue on x86_64, roughly 14x slower.


x86_64 2.26.51 (latest snapshot) 

 39.90%  ld-new  ld-new             [.] bfd_get_next_section_by_name
 21.19%  ld-new  libc-2.12.so       [.] __strcmp_sse42
 20.93%  ld-new  ld-new             [.] gldelf_x86_64_place_orphan
  9.53%  ld-new  ld-new             [.] _bfd_elf_match_sections_by_type
  2.54%  ld-new  ld-new             [.] _bfd_elf_make_section_from_shdr

real    0m9.527s


x86_64 2.23.2 

 46.83%  ld-new  ld-new             [.] _bfd_elf_make_section_from_shdr
 16.17%  ld-new  [kernel.kallsyms]  [k] 0xffffffff8103ba6a
  4.00%  ld-new  ld-new             [.] bfd_elf_final_link
  2.38%  ld-new  ld-new             [.] walk_wild_section_general
  1.90%  ld-new  ld-new             [.] bfd_hash_lookup

real    0m0.672s

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