diff --git a/mlir/include/mlir/Dialect/LoopOps/Transforms.h b/mlir/include/mlir/Dialect/LoopOps/Transforms.h
new file mode 100644
--- /dev/null
+++ b/mlir/include/mlir/Dialect/LoopOps/Transforms.h
@@ -0,0 +1,48 @@
+//===- Transforms.h - Pass Entrypoints --------------------------*- C++ -*-===//
+//
+// Part of the LLVM 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This header file defines transformations on loop operations.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MLIR_DIALECT_LOOPOPS_TRANSFORMS_H_
+#define MLIR_DIALECT_LOOPOPS_TRANSFORMS_H_
+
+#include "llvm/ADT/ArrayRef.h"
+
+namespace mlir {
+
+class Region;
+
+namespace loop {
+
+class ParallelOp;
+
+/// Fuses all adjacent loop.parallel operations with identical bounds and step
+/// into one loop.parallel operations. Uses a naive aliasing and dependency
+/// analysis.
+void naivelyFuseParallelOps(Region &region);
+
+/// Tile a parallel loop of the form
+///   loop.parallel (%i0, %i1) = (%arg0, %arg1) to (%arg2, %arg3)
+///                                             step (%arg4, %arg5)
+///
+/// into
+///   loop.parallel (%i0, %i1) = (%arg0, %arg1) to (%arg2, %arg3)
+///                                             step (%arg4*tileSize[0],
+///                                                   %arg5*tileSize[1])
+///     loop.parallel (%j0, %j1) = (0, 0) to (min(tileSize[0], %arg2-%j0)
+///                                           min(tileSize[1], %arg3-%j1))
+///                                        step (%arg4, %arg5)
+/// The old loop is replaced with the new one.
+void tileParallelLoop(ParallelOp op, ArrayRef<int64_t> tileSizes);
+
+} // namespace loop
+} // namespace mlir
+
+#endif // MLIR_DIALECT_LOOPOPS_PASSES_H_
diff --git a/mlir/lib/Dialect/LoopOps/Transforms/ParallelLoopFusion.cpp b/mlir/lib/Dialect/LoopOps/Transforms/ParallelLoopFusion.cpp
--- a/mlir/lib/Dialect/LoopOps/Transforms/ParallelLoopFusion.cpp
+++ b/mlir/lib/Dialect/LoopOps/Transforms/ParallelLoopFusion.cpp
@@ -12,6 +12,7 @@
 
 #include "mlir/Dialect/LoopOps/LoopOps.h"
 #include "mlir/Dialect/LoopOps/Passes.h"
+#include "mlir/Dialect/LoopOps/Transforms.h"
 #include "mlir/Dialect/StandardOps/IR/Ops.h"
 #include "mlir/IR/BlockAndValueMapping.h"
 #include "mlir/IR/Builders.h"
@@ -20,7 +21,7 @@
 #include "mlir/Transforms/Passes.h"
 
 using namespace mlir;
-using loop::ParallelOp;
+using namespace mlir::loop;
 
 /// Verify there are no nested ParallelOps.
 static bool hasNestedParallelOp(ParallelOp ploop) {
@@ -135,32 +136,30 @@
   firstPloop.erase();
 }
 
-static void naivelyFuseParallelOps(Operation *op) {
-  OpBuilder b(op);
+void mlir::loop::naivelyFuseParallelOps(Region &region) {
+  OpBuilder b(region);
   // Consider every single block and attempt to fuse adjacent loops.
-  for (auto &region : op->getRegions()) {
-    for (auto &block : region.getBlocks()) {
-      SmallVector<SmallVector<ParallelOp, 8>, 1> ploop_chains{{}};
-      // Not using `walk()` to traverse only top-level parallel loops and also
-      // make sure that there are no side-effecting ops between the parallel
-      // loops.
-      bool noSideEffects = true;
-      for (auto &op : block.getOperations()) {
-        if (auto ploop = dyn_cast<ParallelOp>(op)) {
-          if (noSideEffects) {
-            ploop_chains.back().push_back(ploop);
-          } else {
-            ploop_chains.push_back({ploop});
-            noSideEffects = true;
-          }
-          continue;
+  for (auto &block : region.getBlocks()) {
+    SmallVector<SmallVector<ParallelOp, 8>, 1> ploopChains{{}};
+    // Not using `walk()` to traverse only top-level parallel loops and also
+    // make sure that there are no side-effecting ops between the parallel
+    // loops.
+    bool noSideEffects = true;
+    for (auto &op : block.getOperations()) {
+      if (auto ploop = dyn_cast<ParallelOp>(op)) {
+        if (noSideEffects) {
+          ploopChains.back().push_back(ploop);
+        } else {
+          ploopChains.push_back({ploop});
+          noSideEffects = true;
         }
-        noSideEffects &= op.hasNoSideEffect();
-      }
-      for (ArrayRef<ParallelOp> ploops : ploop_chains) {
-        for (int i = 0, e = ploops.size(); i + 1 < e; ++i)
-          fuseIfLegal(ploops[i], ploops[i + 1], b);
+        continue;
       }
+      noSideEffects &= op.hasNoSideEffect();
+    }
+    for (ArrayRef<ParallelOp> ploops : ploopChains) {
+      for (int i = 0, e = ploops.size(); i + 1 < e; ++i)
+        fuseIfLegal(ploops[i], ploops[i + 1], b);
     }
   }
 }
@@ -168,7 +167,11 @@
 namespace {
 
 struct ParallelLoopFusion : public OperationPass<ParallelLoopFusion> {
-  void runOnOperation() override { naivelyFuseParallelOps(getOperation()); }
+  void runOnOperation() override {
+    for (Region &region : getOperation()->getRegions()) {
+      naivelyFuseParallelOps(region);
+    }
+  }
 };
 
 } // namespace
diff --git a/mlir/lib/Dialect/LoopOps/Transforms/ParallelLoopTiling.cpp b/mlir/lib/Dialect/LoopOps/Transforms/ParallelLoopTiling.cpp
--- a/mlir/lib/Dialect/LoopOps/Transforms/ParallelLoopTiling.cpp
+++ b/mlir/lib/Dialect/LoopOps/Transforms/ParallelLoopTiling.cpp
@@ -13,13 +13,14 @@
 #include "mlir/Dialect/AffineOps/AffineOps.h"
 #include "mlir/Dialect/LoopOps/LoopOps.h"
 #include "mlir/Dialect/LoopOps/Passes.h"
+#include "mlir/Dialect/LoopOps/Transforms.h"
 #include "mlir/Dialect/StandardOps/IR/Ops.h"
 #include "mlir/Pass/Pass.h"
 #include "mlir/Transforms/RegionUtils.h"
 #include "llvm/Support/CommandLine.h"
 
 using namespace mlir;
-using loop::ParallelOp;
+using namespace mlir::loop;
 
 /// Tile a parallel loop of the form
 ///   loop.parallel (%i0, %i1) = (%arg0, %arg1) to (%arg2, %arg3)
@@ -33,7 +34,7 @@
 ///                                           min(tileSize[1], %arg3-%j1))
 ///                                        step (%arg4, %arg5)
 /// The old loop is replaced with the new one.
-static void tileParallelLoop(ParallelOp op, ArrayRef<int64_t> tileSizes) {
+void mlir::loop::tileParallelLoop(ParallelOp op, ArrayRef<int64_t> tileSizes) {
   OpBuilder b(op);
   auto zero = b.create<ConstantIndexOp>(op.getLoc(), 0);
   SmallVector<Value, 2> tileSizeConstants;