[PATCH] MachO: support N_INDR aliases in the assembler

[Tim Northover]

Hi kledzik,

Hi,

This patch should allow LLVM to emit N_INDR symbols (essentially telling the linker that some symbol should be resolved to another named one when it becomes available).

I'm not all that good at the actual MachO object format though, so I may have made some mistakes. Does it look OK?

Cheers.

Tim.

http://reviews.llvm.org/D3892

Files:
  include/llvm/MC/MCMachObjectWriter.h
  include/llvm/Object/SymbolicFile.h
  lib/MC/MachObjectWriter.cpp
  lib/Object/MachOObjectFile.cpp
  test/MC/MachO/aliased-symbols.s
  test/MC/MachO/variable-exprs.s
  tools/llvm-nm/llvm-nm.cpp
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