[Mlir-commits] [mlir] [mlir] Add the concept of ASM dialect aliases (PR #86033)

[Fabian Mora]

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@@ -0,0 +1,60 @@
+//===- AsmInterfaces.td - Asm Interfaces -------------------*- tablegen -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains interfaces and other utilities for interacting with the
+// AsmParser and AsmPrinter.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MLIR_IR_ASMINTERFACES_TD
+#define MLIR_IR_ASMINTERFACES_TD
+
+include "mlir/IR/AttrTypeBase.td"
+include "mlir/IR/OpBase.td"
+
+//===----------------------------------------------------------------------===//
+// AttrAsmAliasAttrInterface
+//===----------------------------------------------------------------------===//
+
+def AttrAsmAliasAttrInterface : AttrInterface<"AttrAsmAliasAttrInterface"> {
+  let cppNamespace = "::mlir";
+  let description = [{
+    This interface allows aliasing an attribute between dialects, allowing
+    custom printing of an attribute by an external dialect.
+  }];
+  let methods = [
+    InterfaceMethod<[{
+        Returns the dialect responsible for printing and parsing the attribute
+        instance.
+      }],
+      "Dialect*", "getAliasDialect", (ins), [{}], [{}]
+    >
+  ];
+}
+
+//===----------------------------------------------------------------------===//
----------------
fabianmcg wrote:

Also worth nothing, that for `LLVMPointerType` this interface (`TypeAsmAliasTypeInterface`) solves the issue of printing in all circumstances.

https://github.com/llvm/llvm-project/pull/86033