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diff --git a/include/linalg3/Analysis.h b/include/linalg3/Analysis.h
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+//===- Analysis.h - Linalg dialect Analysis function definitions ----------===//
+//
+// 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 LINALG3_ANALYSIS_H_
+#define LINALG3_ANALYSIS_H_
+
+#include "linalg2/Analysis.h"
+
+namespace mlir {
+class AffineMap;
+} // namespace mlir
+
+namespace linalg {
+
+/// Given a `map` specification and a subset of its results
+/// `[beginResult, endResult)`, returns the inverse map that maps result
+/// positions to dim positions.
+mlir::AffineMap inverseSubMap(mlir::AffineMap map, unsigned beginResult = 0,
+                              unsigned endResult = 0);
+
+} // namespace linalg
+
+#endif // LINALG3_ANALYSIS_H_