[llvm] [mlir][transform] LISH: Add transform op (PR #70630)

[Oleksandr Alex Zinenko via llvm-commits]

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@@ -691,6 +691,65 @@ def GetTypeOp : TransformDialectOp<"get_type",
                        "functional-type(operands, results)";
 }
 
+def HoistLoopInvariantSubsetsOp
+    : TransformDialectOp<"hoist_loop_invariant_subsets",
+        [TransformOpInterface, TransformEachOpTrait,
+         DeclareOpInterfaceMethods<MemoryEffectsOpInterface>,
+         ReportTrackingListenerFailuresOpTrait]> {
+  let summary = "Hoist loop invariant subset ops";
+  let description = [{
+    This transform hoist loop-invariant subset ops out of loop-like ops. It
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ftynse wrote:

Nit: hoists

https://github.com/llvm/llvm-project/pull/70630