[PATCH] D118193: [llvm-nm] add a new option --bit-mode to specify the type of object file llvm-nm should examine

[Digger Lin via Phabricator via llvm-commits]

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DiggerLin added reviewers: jhenderson, MaskRay, hubert.reinterpretcast, Esme, PowerPC.
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The archive file may contain 32bit and 64bit object files at the same time. adding a new option "--bit-mode" to specify, which type of object file should be examine. 
for example , "llvm-nm --bit-mode=64  archive.a" only deal with the 64bit object files in the archive.a ,ignore the all 32bit object files in the archive.a


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D118193

Files:
  llvm/docs/CommandGuide/llvm-nm.rst
  llvm/test/tools/llvm-nm/XCOFF/option-bit-mode.test
  llvm/tools/llvm-nm/Opts.td
  llvm/tools/llvm-nm/llvm-nm.cpp

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