[Mlir-commits] [mlir] [mlir][bufferization] Support custom types (1/N) (PR #142986)

[Matthias Springer]

================
@@ -387,20 +388,28 @@ def Bufferization_DeallocTensorOp : Bufferization_Op<"dealloc_tensor",
 // ToTensorOp
 //===----------------------------------------------------------------------===//
 
+class Bufferization_TensorAndBufferMatch<string tensor, string buffer> : PredOpTrait<
+  "specified tensor and buffer types match",
+  CPred<
+    "::mlir::bufferization::detail::typesMatchAfterBufferization("
+        "$_op, $" # tensor # ", $" # buffer #")"
+  >
+>;
+
 def Bufferization_ToTensorOp : Bufferization_Op<"to_tensor", [
     BufferizableOpInterface,
     SameOperandsAndResultShape,
     SameOperandsAndResultElementType,
-    AllElementTypesMatch<["memref", "result"]>
+    Bufferization_TensorAndBufferMatch<"result", "buffer">
   ]> {
-  let summary = "create a tensor from a `memref`";
+  let summary = "create a buffer-like type from a tensor-like type";
   let description = [{
-    An operation that creates a tensor from a `memref`. The result value is a
-    tensor whose shape and element type match the memref operand.
+    An operation that creates a tensor from a buffer. The result value is a
+    tensor-like type whose shape and element type match the buffer-like operand.
----------------
matthias-springer wrote:

Mention in the documentation that operand and result types must be compatible as per `TensorLikeTypeInterface::verifyCompatibleBufferType`.

https://github.com/llvm/llvm-project/pull/142986