[llvm-dev] [RFC] Refactor llvm-dwp in to a library.

[Alexander Yermolovich via llvm-dev]

Hello

I am working on adding support for bolt (https://github.com/facebookincubator/BOLT/tree/rebased) to write out DWP directly.  I want to re-use as much llvm-dwp functionality as possible.
Plan is to move most of functionality that is now in llvm-dwp in to llvm/lib/DWP, with corresponding header file in llvm/include/llvm/DWP.
In the header files have
getContributionIndex
handleSection
parseCompileUnitHeader
writeStringsAndOffsets
getCUIdentifiers
buildDuplicateError
writeIndex

For structs that are passed around define in the header also.
UnitIndexEntry
CompileUnitHeader
CompileUnitIdentifiers


Thought I would solicit opinions before I dive too deep into this.

Thank You
Alex
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