[PATCH] D141105: [OpenMP] Add support for '--offload-arch=native' to OpenMP offloading

[Joseph Huber via Phabricator via cfe-commits]

jhuber6 created this revision.
jhuber6 added reviewers: jdoerfert, tianshilei1992, JonChesterfield, tra, yaxunl.
Herald added a subscriber: guansong.
Herald added a project: All.
jhuber6 requested review of this revision.
Herald added subscribers: cfe-commits, sstefan1, MaskRay.
Herald added a project: clang.

This patch adds support for '--offload-arch=native' to OpenMP
offloading. This will automatically generate the toolchains required to
fulfil whatever GPUs the user has installed. Getting this to work
requires a bit of a hack. The problem is that we need the ToolChain to
launch its searching program. But we do not yet have that ToolChain
built. I had to temporarily make the ToolChain and also add some logic
to ignore regular warnings & errors.

Depends on D141078 <https://reviews.llvm.org/D141078>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141105

Files:
  clang/include/clang/Driver/Driver.h
  clang/lib/Driver/Driver.cpp

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