[PATCH] D106870: [OpenMP] Multi architecture compilation support

[Jon Chesterfield via Phabricator via cfe-commits]

JonChesterfield added a comment.

There seems to be a bunch of different things in this patch.

There's some driver plumbing to compile for more than one arch (presumably by calling the target compiler N times). That's a great feature, I want to build an application bthat can run on nvptx or amdgpu. Probably need a test case showing that combination.

Then there's a bunch of stuff to do with 'requirements', but it's not clear what that is.

Finally there's some stuff where libomptarget dlopens itself then spawns amdgpu-arch. I can't tell why we would want to do that.

My guess was that each arch would get its own section in the host executable containing a code object and each host plugin would be responsible for indicating whether it could do anything with a given code object. That should work out of the box for machines with only one offloading arch available, and need some work around device_id to handle multiple ones.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D106870/new/

https://reviews.llvm.org/D106870