[PATCH] D130096: [Clang][AMDGPU] Emit AMDGPU library control constants in clang

[Joseph Huber via Phabricator via cfe-commits]

jhuber6 added a comment.

Let me know if I should move this code somewhere else, or if there are problems. One change I made is that the constant is `weak_odr` and `hidden` instead of `linkonce_odr` and `protected`. This is so this constant is alive until link time, AMDGPU pretty much always uses LTO so these should be optimized out when we internalize symbols. I'm assuming we don't need `protected` visibility as these shouldn't be read from another executable (e.g. the host).


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D130096