[MINOR] Added some missing license headers and fixed a typo.

.git-blame-ignore-revs

@@ -1,4 +1,4 @@
-# These commits are ignore by `git blame`.
+# These commits are ignored by `git blame`.
 # https://git-scm.com/docs/git-blame
 # Run this command to configure git to use this file.
 # `$ git config blame.ignoreRevsFile .git-blame-ignore-revs`

src/ir/daphneir/Canonicalize.cpp

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2024 The DAPHNE Consortium
+ *
+ * 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 "ir/daphneir/Daphne.h"
 #include "mlir/Dialect/SCF/IR/SCF.h"
 #include "mlir/Support/LogicalResult.h"

src/ir/daphneir/Fold.cpp

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2024 The DAPHNE Consortium
+ *
+ * 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/OpDefinition.h"
 #include <ir/daphneir/Daphne.h>
 #include <ir/daphneir/DaphneOps.cpp.inc>