From 22bb32ed1b9505ae49145ca7765def6398f4803d Mon Sep 17 00:00:00 2001
From: Tuowen Zhao <ztuowen@gmail.com>
Date: Wed, 24 Apr 2019 10:53:07 -0600
Subject: Initial commit

---
 include/linalg1/RangeType.h | 49 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 include/linalg1/RangeType.h

(limited to 'include/linalg1/RangeType.h')

diff --git a/include/linalg1/RangeType.h b/include/linalg1/RangeType.h
new file mode 100644
index 0000000..d17c058
--- /dev/null
+++ b/include/linalg1/RangeType.h
@@ -0,0 +1,49 @@
+//===- RangeType.h - Linalg RangeType definition --------------------------===//
+//
+// Copyright 2019 The MLIR Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// =============================================================================
+
+#ifndef LINALG1_RANGETYPE_H_
+#define LINALG1_RANGETYPE_H_
+
+#include "linalg1/Types.h"
+#include "mlir/IR/Types.h"
+
+namespace mlir {
+class MLIRContext;
+}
+
+namespace linalg {
+
+/// A RangeType is the simplest possible form of a type in MLIR. It represents
+/// a minimal range abstraction (min, max, step). Since RangeType is constructed
+/// without any additional argument, this example illustrates the minimal
+/// amount of information required to implement a new custom MLIR type.
+class RangeType : public mlir::Type::TypeBase<RangeType, mlir::Type> {
+public:
+  // Used to implement llvm-style cast.
+  using Base::Base;
+  /// Construction hook.
+  static RangeType get(mlir::MLIRContext *context) {
+    /// Custom, uniqu'ed construction in the mlir::MLIRContext.
+    return Base::get(context, LinalgTypes::Range);
+  }
+  /// Used to implement llvm-style cast.
+  static bool kindof(unsigned kind) { return kind == LinalgTypes::Range; }
+};
+
+} // namespace linalg
+
+#endif // LINALG1_RANGETYPE_H_
-- 
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