[all-commits] [llvm/llvm-project] d695d0: [lld-macho] Optimize bind opcodes with multiple pa...

[Vincent Lee via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d695d0d6f60528841ab8671cdccff85f889ca95d
      https://github.com/llvm/llvm-project/commit/d695d0d6f60528841ab8671cdccff85f889ca95d
  Author: Vincent Lee <leevince at fb.com>
  Date:   2021-07-15 (Thu, 15 Jul 2021)

  Changed paths:
    M lld/MachO/Config.h
    M lld/MachO/Driver.cpp
    M lld/MachO/Options.td
    M lld/MachO/SyntheticSections.cpp
    M lld/test/MachO/bind-opcodes.s

  Log Message:
  -----------
  [lld-macho] Optimize bind opcodes with multiple passes

In D105866, we used an intermediate container to store a list of opcodes. Here,
we use that data structure to help us perform optimization passes that would allow
a more efficient encoding of bind opcodes. Currently, the functionality mirrors the
optimization pass {1,2} done in ld64 for bind opcodes under optimization gate
to prevent slight regressions.

Reviewed By: int3, #lld-macho

Differential Revision: https://reviews.llvm.org/D105867