[llvm] [Offload] Add MPI Proxy Plugin (PR #114574)

[Joseph Huber via llvm-commits]

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@@ -194,8 +194,10 @@ set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} powerpc64-ibm-linux-g
 set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} powerpc64-ibm-linux-gnu-LTO")
 set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} x86_64-unknown-linux-gnu")
 set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} x86_64-unknown-linux-gnu-LTO")
+set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} x86_64-unknown-linux-gnu-mpi")
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jhuber6 wrote:

I'm confused what this is testing. The target regions get lowered to MPI calls? Where does a GPU come in? The tests basically just make sure that the target region executes properly, we can just make that agnostic to the underlying device that it actually executes on. Honestly a lot of this stuff should be reworked but that's time consuming.

https://github.com/llvm/llvm-project/pull/114574