Log Message:
mold: update to 1.0.2.

New features:

- mold now automatically falls back to ld.bfd or ld.lld if GCC-based LTO
  (link time optimization) or LLVM-based LTO are requested, respectively.
  This is a temporary hack until mold gains native LTO support. (a5029d1)
- The following flags have been added: -z ibt (9ca6a9d), -z cet-report
  (31a43a7), -z shstk (e29bd8f), -z ibtplt (fbfa01d)
- [ARM64] Range extension thunks are now supported. Previously, mold
  reported "relocation overflow" errors when the output file's text
  segment is larger than some threshold (~60 MiB). Now, it can link large
  programs just fine. (9287682)
- [NetBSD] mold is now usable on NetBSD. (948248b)
- [x86-64] mold now emits compact 8-byte PLT entries instead of the
  regular 16-byte PLT entries if -z now is given. (0370e7f)
- RELR-type packed dynamic relocations are now supported. You can enable
  it by passing -z pack-dyn-relocs=relr. The good news is that it can
  typically reduce PIE (position-independent executable) size by a few
  percent. This is not a negligible saving because PIE is now default on
  many systems for security reasons. The bad news is that it needs a
  runtime support. To our knowledge, it's supported only on ChromeOS,
  Android, Fuchsia and SerenityOS at this moment. We need to wait for a
  while for other systems to catch up. (bd6afa1)

Performance improvements:

- Version script processor was rewritten with the Aho-Corasick string
  matching algorithm. If your program uses a version script that contains
  lots of glob patterns with the * metacharacter, you'll likely to see a
  significant speedup. (d0c1c4d)
- Relocation processing for non-memory-allocated sections has been
  optimized. You'll likely to see a speedup if your binary contains large
  size of debug info. (d8dc8a6)

Bug fixes and compatibility improvements:

- mold can now link ICC-generated object files with GCC-generated ones
  even if the -static flag is given. (#271, be6ae07)
- mold can now handle archive files (.a files) larger than 4 GiB.
  (bba506d)
- mold no longer have "GNU gold" in its --version string. We had this
  identification string for some ./configure scripts that didn't work
  without it, but it causes other compatibility issue such as #284. Now,
  mold --version prints out something like mold 1.0.2 (compatible with
  GNU ld). We still need "GNU ld" for many ./configure scripts. (cea6a56)
- Symbol resolution algorithm has been completely rewritten. The previous
  implementation was non-deterministic in some edge cases, meaning that
  outcomes from multiple runs of the linker with the same command line
  parameters could be different due to thread scheduling randomness or
  some other internal randomness. Now it is guaranteed to be
  deterministic. (ce5749c)
- mold now try to pull out an object file from an archive if it's needed
  to resolve an undefined symbol with a common symbol. mold used to
  ignore common symbols in archives, so it could fail with an unresolved
  symbol error even if the undefined symbol could be resolved using a
  file in an archive. (27d8361)
- mold no longer converts .ctors/.dtors sections into
  .init_array/.fini_array sections. mold used to convert them but in a
  wrong way. Since .ctors/.dtors have been superseded by
  .init_array/.fini_array long ago, it should be fine to stop doing this
  now. (4348417)
- [i386] mold now ignores some legacy symbols in an i386 CRT files to
  avoid duplicate symbol errors. (#270, 0c19046)