[PATCH] D115283: [AMDGPU] Set "amdgpu_hostcall" module flag if an AMDGPU function has calls to device lib functions that use hostcalls.

[Yaxun Liu via Phabricator via cfe-commits]

yaxunl added a comment.

One drawback of this approach is that it does not work for LLVM modules generated from assembly or programmatically e.g. Tensorflow XLA.

Another drawback is that if `__ockl_call_host_function` or `__ockl_fprintf_stderr_begin` are eliminated by optimizer, the module flag is still kept. This could happen if users use printf in assert.

Is there a way to detect use of hostcall later in LLVM IR not by calling of these functions?


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  https://reviews.llvm.org/D115283/new/

https://reviews.llvm.org/D115283