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

[Hervé Yviquel 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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hyviquel wrote:

We're not using this as a compilation triple; it's only used to add new tests that invoke `mpirun` in LIT, and only if the MPI plugin was built. For reference, see [this line in `lit.cfg`](https://github.com/cl3to/llvm-project/blob/patch/offload-mpi-proxy-plugin/offload/test/lit.cfg#L425). Do you have any suggestion for a cleaner or more appropriate way to handle this?


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