[PATCH] D29464: [MinGWToolChain] Don't use GCC headers on Win32

[Yaron Keren via Phabricator via cfe-commits]

yaron.keren added a comment.

The gcc include dirs in mingw contains headers not available esewhere and thus can't be removed.
Notable examples,

  omp.h - OpenMP functions
  openacc.h - OpenACC functions
  quadmath.h - QUADMATH functions


https://reviews.llvm.org/D29464