Move Pass.{h,cpp} from lib/IR/ to lib/Transforms/.

PiperOrigin-RevId: 208571437

mlir/lib/Transforms/ConvertToCFG.cpp

@@ -23,7 +23,7 @@
 #include "mlir/IR/CFGFunction.h"
 #include "mlir/IR/MLFunction.h"
 #include "mlir/IR/Module.h"
-#include "mlir/IR/Pass.h"
+#include "mlir/Transforms/Pass.h"
 #include "mlir/Transforms/Passes.h"
 #include "llvm/ADT/DenseSet.h"
 using namespace mlir;

mlir/lib/Transforms/LoopUnroll.cpp

@@ -25,10 +25,10 @@
 #include "mlir/IR/MLFunction.h"
 #include "mlir/IR/Module.h"
 #include "mlir/IR/OperationSet.h"
-#include "mlir/IR/Pass.h"
 #include "mlir/IR/StandardOps.h"
 #include "mlir/IR/Statements.h"
 #include "mlir/IR/StmtVisitor.h"
+#include "mlir/Transforms/Pass.h"
 #include "mlir/Transforms/Passes.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/Support/raw_ostream.h"

mlir/lib/Transforms/Pass.cpp

@@ -15,11 +15,11 @@
 // limitations under the License.
 // =============================================================================
 //
-// This file implements loop unrolling.
+// This file implements common pass infrastructure.
 //
 //===----------------------------------------------------------------------===//
 
-#include "mlir/IR/Pass.h"
+#include "mlir/Transforms/Pass.h"
 #include "mlir/IR/CFGFunction.h"
 #include "mlir/IR/MLFunction.h"
 #include "mlir/IR/Module.h"

mlir/tools/mlir-opt/mlir-opt.cpp

@@ -25,10 +25,10 @@
 #include "mlir/IR/MLFunction.h"
 #include "mlir/IR/MLIRContext.h"
 #include "mlir/IR/Module.h"
-#include "mlir/IR/Pass.h"
 #include "mlir/Parser.h"
 #include "mlir/TensorFlow/ControlFlowOps.h"
 #include "mlir/TensorFlow/Passes.h"
+#include "mlir/Transforms/Pass.h"
 #include "mlir/Transforms/Passes.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/FileUtilities.h"