[Mlir-commits] [mlir] [mlir][mesh] Add collective communication operations (PR #71960)

[Boian Petkantchin]

================
@@ -129,6 +205,347 @@ MeshShardingAttr::verify(function_ref<InFlightDiagnostic()> emitError,
   return success();
 }
 
+//===----------------------------------------------------------------------===//
+// collective communication ops
+//===----------------------------------------------------------------------===//
+
+namespace {
+
+std::optional<DenseI16ArrayAttr>
+canonicalizeAxesSetAttribute(DenseI16ArrayAttr attr) {
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sogartar wrote:

Done.
I also change the meaning of `mesh_axes` to induce the order of devices in the device groups. I added documentation about this.

https://github.com/llvm/llvm-project/pull/71960