[PATCH] D101646: [llvm-dwarfdump] Help option output should be consistent with the command guide

[Owen Reynolds via Phabricator via llvm-commits]

gbreynoo created this revision.
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The dwarfdump command guide shows the short options used as aliases but these are not found in the help text unless `--show-hidden` is used. Investigating other tools some follow this pattern, others like llvm-objdump show aliases with `--help`. This change fixes the help output to be consistent with the command guide.

As part of this change I updated cmdline.test, including some options that were missing testing.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101646

Files:
  llvm/test/tools/llvm-dwarfdump/cmdline.test
  llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp

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