[OpenMP] Add flag for overwriting default PTX version for OpenMP targets
Summary:
This flag "--fopenmp-ptx=" enables the overwriting of the default PTX version used for GPU offloaded OpenMP target regions: "+ptx42".
Reviewers: arpith-jacob, caomhin, carlo.bertolli, ABataev, Hahnfeld, jlebar, hfinkel, tstellar
Reviewed By: ABataev
Subscribers: rengolin, cfe-commits
Differential Revision: https://reviews.llvm.org/D29660
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@310489
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projects / clang / commit