Adjust License.txt file to use the LLVM license

PiperOrigin-RevId: 286906740

26 files changed, 104 insertions, 338 deletions

diff --git a/mlir/lib/Transforms/AffineDataCopyGeneration.cpp b/mlir/lib/Transforms/AffineDataCopyGeneration.cpp
index 5bc33943e50..1e1b8775d32 100644
--- a/mlir/lib/Transforms/AffineDataCopyGeneration.cpp
+++ b/mlir/lib/Transforms/AffineDataCopyGeneration.cpp
@@ -1,19 +1,10 @@
 //===- AffineDataCopyGeneration.cpp - Explicit memref copying pass ------*-===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements a pass to automatically promote accessed memref regions
 // to buffers in a faster memory space that is explicitly managed, with the
diff --git a/mlir/lib/Transforms/AffineLoopInvariantCodeMotion.cpp b/mlir/lib/Transforms/AffineLoopInvariantCodeMotion.cpp
index 23199dd8a39..1f33c0f5dca 100644
--- a/mlir/lib/Transforms/AffineLoopInvariantCodeMotion.cpp
+++ b/mlir/lib/Transforms/AffineLoopInvariantCodeMotion.cpp
@@ -1,19 +1,10 @@
 //===- AffineLoopInvariantCodeMotion.cpp - Code to perform loop fusion-----===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements loop invariant code motion.
 //
diff --git a/mlir/lib/Transforms/CSE.cpp b/mlir/lib/Transforms/CSE.cpp
index 18f9fce5e46..714fb1d0109 100644
--- a/mlir/lib/Transforms/CSE.cpp
+++ b/mlir/lib/Transforms/CSE.cpp
@@ -1,19 +1,10 @@
 //===- CSE.cpp - Common Sub-expression Elimination ------------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This transformation pass performs a simple common sub-expression elimination
 // algorithm on operations within a function.
diff --git a/mlir/lib/Transforms/Canonicalizer.cpp b/mlir/lib/Transforms/Canonicalizer.cpp
index 7dcdeb67cdc..5b3a1eb1cf3 100644
--- a/mlir/lib/Transforms/Canonicalizer.cpp
+++ b/mlir/lib/Transforms/Canonicalizer.cpp
@@ -1,19 +1,10 @@
 //===- Canonicalizer.cpp - Canonicalize MLIR operations -------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This transformation pass converts operations into their canonical forms by
 // folding constants, applying operation identity transformations etc.
diff --git a/mlir/lib/Transforms/DialectConversion.cpp b/mlir/lib/Transforms/DialectConversion.cpp
index 05066ef599c..a19274acd1b 100644
--- a/mlir/lib/Transforms/DialectConversion.cpp
+++ b/mlir/lib/Transforms/DialectConversion.cpp
@@ -1,19 +1,10 @@
 //===- DialectConversion.cpp - MLIR dialect conversion generic pass -------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 
 #include "mlir/Transforms/DialectConversion.h"
 #include "mlir/IR/Block.h"
diff --git a/mlir/lib/Transforms/Inliner.cpp b/mlir/lib/Transforms/Inliner.cpp
index b158948069e..b2cee7da083 100644
--- a/mlir/lib/Transforms/Inliner.cpp
+++ b/mlir/lib/Transforms/Inliner.cpp
@@ -1,19 +1,10 @@
 //===- Inliner.cpp - Pass to inline function calls ------------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements a basic inlining algorithm that operates bottom up over
 // the Strongly Connect Components(SCCs) of the CallGraph. This enables a more
diff --git a/mlir/lib/Transforms/LoopCoalescing.cpp b/mlir/lib/Transforms/LoopCoalescing.cpp
index c1eec56526e..2aee688c6c1 100644
--- a/mlir/lib/Transforms/LoopCoalescing.cpp
+++ b/mlir/lib/Transforms/LoopCoalescing.cpp
@@ -1,19 +1,10 @@
 //===- LoopCoalescing.cpp - Pass transforming loop nests into single loops-===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 
 #include "mlir/Dialect/LoopOps/LoopOps.h"
 #include "mlir/Dialect/StandardOps/Ops.h"
diff --git a/mlir/lib/Transforms/LoopFusion.cpp b/mlir/lib/Transforms/LoopFusion.cpp
index 60f0264eb35..51e30ba7163 100644
--- a/mlir/lib/Transforms/LoopFusion.cpp
+++ b/mlir/lib/Transforms/LoopFusion.cpp
@@ -1,19 +1,10 @@
 //===- LoopFusion.cpp - Code to perform loop fusion -----------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements loop fusion.
 //
diff --git a/mlir/lib/Transforms/LoopInvariantCodeMotion.cpp b/mlir/lib/Transforms/LoopInvariantCodeMotion.cpp
index bd58827d001..93c80822fb3 100644
--- a/mlir/lib/Transforms/LoopInvariantCodeMotion.cpp
+++ b/mlir/lib/Transforms/LoopInvariantCodeMotion.cpp
@@ -1,19 +1,10 @@
 //===- LoopInvariantCodeMotion.cpp - Code to perform loop fusion-----------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements loop invariant code motion.
 //
diff --git a/mlir/lib/Transforms/LoopTiling.cpp b/mlir/lib/Transforms/LoopTiling.cpp
index 361a4d8ecb9..5389c7e4429 100644
--- a/mlir/lib/Transforms/LoopTiling.cpp
+++ b/mlir/lib/Transforms/LoopTiling.cpp
@@ -1,19 +1,10 @@
 //===- LoopTiling.cpp --- Loop tiling pass ------------------------------*-===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements a pass to tile loop nests.
 //
diff --git a/mlir/lib/Transforms/LoopUnroll.cpp b/mlir/lib/Transforms/LoopUnroll.cpp
index 40f48ada4d7..e94c6c8b0bb 100644
--- a/mlir/lib/Transforms/LoopUnroll.cpp
+++ b/mlir/lib/Transforms/LoopUnroll.cpp
@@ -1,19 +1,10 @@
 //===- LoopUnroll.cpp - Code to perform loop unrolling --------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements loop unrolling.
 //
diff --git a/mlir/lib/Transforms/LoopUnrollAndJam.cpp b/mlir/lib/Transforms/LoopUnrollAndJam.cpp
index a857b8ec95a..3cefcaacadc 100644
--- a/mlir/lib/Transforms/LoopUnrollAndJam.cpp
+++ b/mlir/lib/Transforms/LoopUnrollAndJam.cpp
@@ -1,19 +1,10 @@
 //===- LoopUnrollAndJam.cpp - Code to perform loop unroll and jam ---------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements loop unroll and jam. Unroll and jam is a transformation
 // that improves locality, in particular, register reuse, while also improving
diff --git a/mlir/lib/Transforms/MemRefDataFlowOpt.cpp b/mlir/lib/Transforms/MemRefDataFlowOpt.cpp
index 0695aafe171..957f41a9d3e 100644
--- a/mlir/lib/Transforms/MemRefDataFlowOpt.cpp
+++ b/mlir/lib/Transforms/MemRefDataFlowOpt.cpp
@@ -1,19 +1,10 @@
 //===- MemRefDataFlowOpt.cpp - MemRef DataFlow Optimization pass ------ -*-===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements a pass to forward memref stores to loads, thereby
 // potentially getting rid of intermediate memref's entirely.
diff --git a/mlir/lib/Transforms/PipelineDataTransfer.cpp b/mlir/lib/Transforms/PipelineDataTransfer.cpp
index 4162936ea2d..12ce6c66abd 100644
--- a/mlir/lib/Transforms/PipelineDataTransfer.cpp
+++ b/mlir/lib/Transforms/PipelineDataTransfer.cpp
@@ -1,19 +1,10 @@
 //===- PipelineDataTransfer.cpp --- Pass for pipelining data movement ---*-===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements a pass to pipeline data transfers.
 //
diff --git a/mlir/lib/Transforms/SimplifyAffineStructures.cpp b/mlir/lib/Transforms/SimplifyAffineStructures.cpp
index 9512ff738aa..217e06bc877 100644
--- a/mlir/lib/Transforms/SimplifyAffineStructures.cpp
+++ b/mlir/lib/Transforms/SimplifyAffineStructures.cpp
@@ -1,19 +1,10 @@
 //===- SimplifyAffineStructures.cpp ---------------------------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements a pass to simplify affine structures.
 //
diff --git a/mlir/lib/Transforms/StripDebugInfo.cpp b/mlir/lib/Transforms/StripDebugInfo.cpp
index 772df3da3c7..cdfc7fd7e41 100644
--- a/mlir/lib/Transforms/StripDebugInfo.cpp
+++ b/mlir/lib/Transforms/StripDebugInfo.cpp
@@ -1,19 +1,10 @@
 //===- StripDebugInfo.cpp - Pass to strip debug information ---------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 
 #include "mlir/IR/Function.h"
 #include "mlir/IR/Operation.h"
diff --git a/mlir/lib/Transforms/Utils/FoldUtils.cpp b/mlir/lib/Transforms/Utils/FoldUtils.cpp
index 85d1f21305e..ce39625831a 100644
--- a/mlir/lib/Transforms/Utils/FoldUtils.cpp
+++ b/mlir/lib/Transforms/Utils/FoldUtils.cpp
@@ -1,19 +1,10 @@
 //===- FoldUtils.cpp ---- Fold Utilities ----------------------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file defines various operation fold utilities. These utilities are
 // intended to be used by passes to unify and simply their logic.
diff --git a/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp b/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
index fe4a6f9f9e0..3ab4e287bb2 100644
--- a/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
+++ b/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
@@ -1,19 +1,10 @@
 //===- GreedyPatternRewriteDriver.cpp - A greedy rewriter -----------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements mlir::applyPatternsGreedily.
 //
diff --git a/mlir/lib/Transforms/Utils/InliningUtils.cpp b/mlir/lib/Transforms/Utils/InliningUtils.cpp
index 048130c0d3a..e7b34bb3956 100644
--- a/mlir/lib/Transforms/Utils/InliningUtils.cpp
+++ b/mlir/lib/Transforms/Utils/InliningUtils.cpp
@@ -1,19 +1,10 @@
 //===- InliningUtils.cpp ---- Misc utilities for inlining -----------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements miscellaneous inlining utilities.
 //
diff --git a/mlir/lib/Transforms/Utils/LoopFusionUtils.cpp b/mlir/lib/Transforms/Utils/LoopFusionUtils.cpp
index d5cda3265de..4745a26e168 100644
--- a/mlir/lib/Transforms/Utils/LoopFusionUtils.cpp
+++ b/mlir/lib/Transforms/Utils/LoopFusionUtils.cpp
@@ -1,19 +1,10 @@
 //===- LoopFusionUtils.cpp ---- Utilities for loop fusion ----------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements loop fusion transformation utility functions.
 //
diff --git a/mlir/lib/Transforms/Utils/LoopUtils.cpp b/mlir/lib/Transforms/Utils/LoopUtils.cpp
index bc1ced408a9..3d4db22c866 100644
--- a/mlir/lib/Transforms/Utils/LoopUtils.cpp
+++ b/mlir/lib/Transforms/Utils/LoopUtils.cpp
@@ -1,19 +1,10 @@
 //===- LoopUtils.cpp ---- Misc utilities for loop transformation ----------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements miscellaneous loop transformation routines.
 //
diff --git a/mlir/lib/Transforms/Utils/RegionUtils.cpp b/mlir/lib/Transforms/Utils/RegionUtils.cpp
index 749d5bf1dd0..569c5416edd 100644
--- a/mlir/lib/Transforms/Utils/RegionUtils.cpp
+++ b/mlir/lib/Transforms/Utils/RegionUtils.cpp
@@ -1,19 +1,10 @@
 //===- RegionUtils.cpp - Region-related transformation utilities ----------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 
 #include "mlir/Transforms/RegionUtils.h"
 #include "mlir/IR/Block.h"
diff --git a/mlir/lib/Transforms/Utils/Utils.cpp b/mlir/lib/Transforms/Utils/Utils.cpp
index 96a6cdc544f..409729a5f20 100644
--- a/mlir/lib/Transforms/Utils/Utils.cpp
+++ b/mlir/lib/Transforms/Utils/Utils.cpp
@@ -1,19 +1,10 @@
 //===- Utils.cpp ---- Misc utilities for code and data transformation -----===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements miscellaneous transformation routines for non-loop IR
 // structures.
diff --git a/mlir/lib/Transforms/Vectorize.cpp b/mlir/lib/Transforms/Vectorize.cpp
index d8f5b1dc0e4..2dbac868cc0 100644
--- a/mlir/lib/Transforms/Vectorize.cpp
+++ b/mlir/lib/Transforms/Vectorize.cpp
@@ -1,19 +1,10 @@
 //===- Vectorize.cpp - Vectorize Pass Impl --------------------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 //
 // This file implements vectorization of loops, operations and data types to
 // a target-independent, n-D super-vector abstraction.
diff --git a/mlir/lib/Transforms/ViewOpGraph.cpp b/mlir/lib/Transforms/ViewOpGraph.cpp
index 591562d0245..508c547a52b 100644
--- a/mlir/lib/Transforms/ViewOpGraph.cpp
+++ b/mlir/lib/Transforms/ViewOpGraph.cpp
@@ -1,19 +1,10 @@
 //===- ViewOpGraph.cpp - View/write op graphviz graphs --------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 
 #include "mlir/Transforms/ViewOpGraph.h"
 #include "mlir/IR/Block.h"
diff --git a/mlir/lib/Transforms/ViewRegionGraph.cpp b/mlir/lib/Transforms/ViewRegionGraph.cpp
index db55415d62e..77111087d07 100644
--- a/mlir/lib/Transforms/ViewRegionGraph.cpp
+++ b/mlir/lib/Transforms/ViewRegionGraph.cpp
@@ -1,19 +1,10 @@
 //===- ViewRegionGraph.cpp - View/write graphviz graphs -------------------===//
 //
-// Copyright 2019 The MLIR Authors.
+// Part of the MLIR 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
 //
-// 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.
-// =============================================================================
+//===----------------------------------------------------------------------===//
 
 #include "mlir/Transforms/ViewRegionGraph.h"
 #include "mlir/IR/RegionGraphTraits.h"