[PATCH] D146757: [Driver] Enable defining multilib print options independently of flags

[Michael Platings via Phabricator via cfe-commits]

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Sometimes it's necessary to define a multilib in terms of attributes
that don't correspond directly to a valid command line option.
However to support -print-multi-lib we still need to specify a
representative set of command line options for the multilib.
Decoupling flags from print options enables this.

The default of deriving print options from flags beginning '+' remains.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D146757

Files:
  clang/include/clang/Driver/Multilib.h
  clang/lib/Driver/Multilib.cpp
  clang/unittests/Driver/MultilibBuilderTest.cpp
  clang/unittests/Driver/MultilibTest.cpp

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