[PATCH] D114737: [lld][Macho] Include dead-stripped symbols in mapfile

[Roger Kim via Phabricator via llvm-commits]

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Roger retitled this revision from "[lld][Macho] Provide option to print dead-stripped symbols." to "[lld][Macho] Include dead-stripped symbols in mapfile".
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Small fixes.


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small fix.


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Compilation fix.


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test passes


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Update.


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Update


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I expect this will need some advice but I think it's ready for its initial review.


ld64 outputs dead stripped symbols when using the -dead-strip flag. This change mimics that behavior for lld.

ld64's -dead_strip flag outputs:

  $ ld -map map test.o foo.o -o out -L/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib -lSystem
  $ cat map
  # Path: out
  # Arch: x86_64
  # Object files:
  [  0] linker synthesized
  [  1] test.o
  [  2] foo.o
  # Sections:
  # Address       Size            Segment Section
  0x100003FB7     0x00000001      __TEXT  __text
  0x100003FB8     0x00000000      __TEXT  obj
  0x100003FB8     0x00000048      __TEXT  __unwind_info
  # Symbols:
  # Address       Size            File  Name
  0x100003FB7     0x00000001      [  1] _main
  0x100003FB8     0x00000000      [  2] _foo
  0x100003FB8     0x00000048      [  0] compact unwind info
  
  # Dead Stripped Symbols:
  #               Size            File  Name
  <<dead>>        0x00000001      [  1] _number


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D114737

Files:
  lld/MachO/MapFile.cpp
  lld/test/MachO/dead-strip.s

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