[PATCH] D125008: [llvm-objdump] Print Mnemonic Histogram

[Sjoerd Meijer via Phabricator via llvm-commits]

SjoerdMeijer created this revision.
SjoerdMeijer added reviewers: jhenderson, MaskRay, ostannard, keith, DavidSpickett.
Herald added subscribers: StephenFan, rupprecht, mgrang.
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SjoerdMeijer requested review of this revision.
Herald added a project: LLVM.

This adds option --mnemonic-hist to print a histogram of all (static) instructions/mnemonics. For example:

  $ llvm-objdump --triple=thumbv7 -d --mnemonic-hist
  ..
  Instruction histogram:
           ldr:   120 (27.3973%)
           mov:    96 (21.9178%)
           blx:    56 (12.7854%)
           bl:    31 (7.07763%)
           str:    26 (5.93607%)
           add:    18 (4.10959%)
           b:    12 (2.73973%)
           sub:    10 (2.28311%)
           cmp:     9 (2.05479%)
           ..

I am probably interested in printing more information, like the encoding width, but this seems a good first step.


https://reviews.llvm.org/D125008

Files:
  llvm/test/tools/llvm-objdump/ARM/mnemonic-hist0.test
  llvm/test/tools/llvm-objdump/ARM/mnemonic-hist1.test
  llvm/tools/llvm-objdump/ObjdumpOpts.td
  llvm/tools/llvm-objdump/llvm-objdump.cpp

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