diff --git a/mlir/include/mlir/Reducer/Tester.h b/mlir/include/mlir/Reducer/Tester.h
new file mode 100644
--- /dev/null
+++ b/mlir/include/mlir/Reducer/Tester.h
@@ -0,0 +1,53 @@
+//===- Tester.h -------------------------------------------------*- 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 file defines the testing environment. It provides functionality to run
+// the interestingness scripts on the MLIR test cases and keep track of the most
+// reduced test case variant.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MLIR_REDUCER_TESTER_H
+#define MLIR_REDUCER_TESTER_H
+
+#include <vector>
+
+#include "mlir/IR/Module.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Program.h"
+
+namespace mlir {
+
+// This class defines the testing environment. It contains a method to run the
+// interestingness testing script on MLIR test case files and provides
+// functionality to track the most reduced test case.
+class Tester {
+public:
+  Tester(StringRef testScript,
+         const llvm::ArrayRef<std::string> &testScriptArgs);
+
+  /// Runs the interestingness testing script on a MLIR test case file
+  LogicalResult run(StringRef testCase);
+
+  /// Returns the most reduced MLIR test case module
+  ModuleOp getMostReduced() const { return mostReduced; }
+
+  /// Updates the most reduced MLIR test case module
+  void setMostReduced(ModuleOp t) { mostReduced = std::move(t); }
+
+private:
+  StringRef testScript;
+  const llvm::ArrayRef<std::string> &testScriptArgs;
+  ModuleOp mostReduced;
+};
+
+} // end namespace mlir
+
+#endif
\ No newline at end of file
diff --git a/mlir/test/CMakeLists.txt b/mlir/test/CMakeLists.txt
--- a/mlir/test/CMakeLists.txt
+++ b/mlir/test/CMakeLists.txt
@@ -38,6 +38,7 @@
   mlir-edsc-builder-api-test
   mlir-linalg-ods-gen
   mlir-opt
+  mlir-reduce
   mlir-sdbm-api-test
   mlir-tblgen
   mlir-translate
diff --git a/mlir/test/mlir-reduce/test.sh b/mlir/test/mlir-reduce/test.sh
new file mode 100755
--- /dev/null
+++ b/mlir/test/mlir-reduce/test.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+#Replicate bug
+mlir-opt $1
+
+#Interesting behavior
+exit 1
diff --git a/mlir/test/mlir-reduce/testcase.mlir b/mlir/test/mlir-reduce/testcase.mlir
new file mode 100644
--- /dev/null
+++ b/mlir/test/mlir-reduce/testcase.mlir
@@ -0,0 +1,14 @@
+// RUN: mlir-reduce %s -test %/p/test.sh
+
+func @simple1(%arg0: i1, %arg1: memref<2xf32>, %arg2: memref<2xf32>) {
+  cond_br %arg0, ^bb1, ^bb2
+^bb1:
+  br ^bb3(%arg1 : memref<2xf32>)
+^bb2:
+  %0 = alloc() : memref<2xf32>
+  br ^bb3(%0 : memref<2xf32>)
+^bb3(%1: memref<2xf32>):
+  return
+}
+
+// -----
diff --git a/mlir/tools/CMakeLists.txt b/mlir/tools/CMakeLists.txt
--- a/mlir/tools/CMakeLists.txt
+++ b/mlir/tools/CMakeLists.txt
@@ -2,7 +2,8 @@
 add_subdirectory(mlir-cpu-runner)
 add_subdirectory(mlir-linalg-ods-gen)
 add_subdirectory(mlir-opt)
+add_subdirectory(mlir-reduce)
 add_subdirectory(mlir-rocm-runner)
-add_subdirectory(mlir-translate)
-add_subdirectory(mlir-vulkan-runner)
 add_subdirectory(mlir-shlib)
+add_subdirectory(mlir-translate)
+add_subdirectory(mlir-vulkan-runner)
\ No newline at end of file
diff --git a/mlir/tools/mlir-reduce/CMakeLists.txt b/mlir/tools/mlir-reduce/CMakeLists.txt
new file mode 100644
--- /dev/null
+++ b/mlir/tools/mlir-reduce/CMakeLists.txt
@@ -0,0 +1,41 @@
+get_property(dialect_libs GLOBAL PROPERTY MLIR_DIALECT_LIBS)
+get_property(conversion_libs GLOBAL PROPERTY MLIR_CONVERSION_LIBS)
+set(LLVM_LINK_COMPONENTS
+  AllTargetsAsmParsers
+  AllTargetsCodeGens
+  AllTargetsDescs
+  AllTargetsInfos
+  AsmParser
+  Core
+  IRReader
+  Support
+  Target
+  TransformUtils
+  )
+
+set(LIBS
+  ${dialect_libs}
+  ${conversion_libs}
+  ${test_libs}
+  MLIRAnalysis
+  MLIRDialect
+  MLIREDSC
+  MLIRIR
+  MLIRLoopAnalysis
+  MLIROptLib
+  MLIRParser
+  MLIRPass
+  MLIRSupport
+  MLIRTransforms
+  MLIRTransformUtils
+  )
+
+add_llvm_tool(mlir-reduce
+  mlir-reduce.cpp
+  Tester.cpp
+  )
+
+target_link_libraries(mlir-reduce PRIVATE ${LIBS})
+llvm_update_compile_flags(mlir-reduce)
+
+mlir_check_all_link_libraries(mlir-reduce)
diff --git a/mlir/tools/mlir-reduce/Tester.cpp b/mlir/tools/mlir-reduce/Tester.cpp
new file mode 100644
--- /dev/null
+++ b/mlir/tools/mlir-reduce/Tester.cpp
@@ -0,0 +1,48 @@
+//===- Tester.cpp ---------------------------------------------------------===//
+//
+// 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 file defines the testing environment. It provides functionality to run
+// the interestingness scripts on the MLIR test cases and keep track of the most
+// reduced test case variant.
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir/Reducer/Tester.h"
+
+using namespace mlir;
+
+Tester::Tester(StringRef scriptName,
+               const llvm::ArrayRef<std::string> &scriptArgs)
+    : testScript(scriptName), testScriptArgs(scriptArgs) {}
+
+/// Runs the interestingness testing script on a MLIR test case file
+/// Returns success() if the interesting behavior is present in the test case or
+/// failure() otherwise
+LogicalResult Tester::run(StringRef testCase) {
+
+  std::vector<StringRef> testerArgs;
+  testerArgs.push_back(testCase);
+
+  for (const std::string &arg : testScriptArgs)
+    testerArgs.push_back(arg);
+
+  testerArgs.push_back(testCase);
+
+  std::string errMsg;
+  int result = llvm::sys::ExecuteAndWait(
+      testScript, testerArgs, /*Env=*/None, /*Redirects=*/None,
+      /*SecondsToWait=*/0, /*MemoryLimit=*/0, &errMsg);
+
+  if (result < 0)
+    llvm::report_fatal_error("Error running interestingness test: " + errMsg);
+
+  if (!result)
+    return failure();
+
+  return success();
+}
diff --git a/mlir/tools/mlir-reduce/mlir-reduce.cpp b/mlir/tools/mlir-reduce/mlir-reduce.cpp
new file mode 100644
--- /dev/null
+++ b/mlir/tools/mlir-reduce/mlir-reduce.cpp
@@ -0,0 +1,98 @@
+//===- mlir-reduce.cpp - The MLIR reducer ---------------------------------===//
+//
+// 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 file implements the general framework of the MLIR reducer tool. It
+// parses the command line arguments, parses the initial MLIR test case and sets
+// up the testing environment. It  outputs the most reduced test case variant
+// after executing the reduction passes.
+//
+//===----------------------------------------------------------------------===//
+
+#include <vector>
+
+#include "mlir/IR/Verifier.h"
+#include "mlir/InitAllDialects.h"
+#include "mlir/Parser.h"
+#include "mlir/Pass/Pass.h"
+#include "mlir/Pass/PassManager.h"
+#include "mlir/Reducer/Tester.h"
+#include "mlir/Support/FileUtilities.h"
+#include "mlir/Support/LogicalResult.h"
+#include "mlir/Transforms/Passes.h"
+#include "llvm/Support/InitLLVM.h"
+#include "llvm/Support/ToolOutputFile.h"
+
+using namespace mlir;
+
+static llvm::cl::opt<std::string> inputFilename(llvm::cl::Positional,
+                                                llvm::cl::Required,
+                                                llvm::cl::desc("<input file>"));
+
+static llvm::cl::opt<std::string>
+    testFilename("test", llvm::cl::Required, llvm::cl::desc("Testing script"));
+
+static llvm::cl::list<std::string>
+    testArguments("test-args", llvm::cl::ZeroOrMore,
+                  llvm::cl::desc("Testing script arguments"));
+
+static llvm::cl::opt<std::string>
+    outputFilename("o",
+                   llvm::cl::desc("Output filename for the reduced test case"),
+                   llvm::cl::init("-"));
+
+// Parse and verify the input MLIR file
+static LogicalResult loadModule(MLIRContext &context, OwningModuleRef &module,
+                                StringRef inputFilename) {
+  module = parseSourceFile(inputFilename, &context);
+  if (!module || failed(verify(*module)))
+    return failure();
+
+  return success();
+}
+
+int main(int argc, char **argv) {
+
+  llvm::InitLLVM y(argc, argv);
+
+  registerAllDialects();
+  registerMLIRContextCLOptions();
+  registerPassManagerCLOptions();
+
+  llvm::cl::ParseCommandLineOptions(argc, argv,
+                                    "MLIR test case reduction tool.\n");
+
+  std::string errorMessage;
+
+  auto testscript = openInputFile(testFilename, &errorMessage);
+  if (!testscript)
+    llvm::report_fatal_error(errorMessage);
+
+  auto output = openOutputFile(outputFilename, &errorMessage);
+  if (!output)
+    llvm::report_fatal_error(errorMessage);
+
+  mlir::MLIRContext context;
+  mlir::OwningModuleRef moduleRef;
+  context.allowUnregisteredDialects(true);
+
+  if (failed(loadModule(context, moduleRef, inputFilename)))
+    llvm::report_fatal_error("Input test case can't be parsed");
+
+  // Initialize test environment
+  Tester test(testFilename, testArguments);
+  test.setMostReduced(moduleRef.get());
+
+  if (failed(test.run(inputFilename)))
+    llvm::report_fatal_error(
+        "Input test case does not exhibit interesting behavior");
+
+  moduleRef.get().print(output->os());
+  output->keep();
+
+  return 0;
+}
\ No newline at end of file