diff --git a/mlir/include/mlir/Transforms/GreedyPatternRewriteDriver.h b/mlir/include/mlir/Transforms/GreedyPatternRewriteDriver.h
--- a/mlir/include/mlir/Transforms/GreedyPatternRewriteDriver.h
+++ b/mlir/include/mlir/Transforms/GreedyPatternRewriteDriver.h
@@ -16,6 +16,8 @@
 
 #include "mlir/Rewrite/FrozenRewritePatternList.h"
 
+#define MAX_PATTERN_MATCH_ITERATIONS 10
+
 namespace mlir {
 
 //===----------------------------------------------------------------------===//
@@ -32,11 +34,13 @@
 ///
 LogicalResult
 applyPatternsAndFoldGreedily(Operation *op,
-                             const FrozenRewritePatternList &patterns);
+                             const FrozenRewritePatternList &patterns,
+		             unsigned max_iterations = MAX_PATTERN_MATCH_ITERATIONS);
 /// Rewrite the given regions, which must be isolated from above.
 LogicalResult
 applyPatternsAndFoldGreedily(MutableArrayRef<Region> regions,
-                             const FrozenRewritePatternList &patterns);
+                             const FrozenRewritePatternList &patterns,
+		             unsigned max_iterations = MAX_PATTERN_MATCH_ITERATIONS);
 
 /// Applies the specified patterns on `op` alone while also trying to fold it,
 /// by selecting the highest benefits patterns in a greedy manner. Returns
diff --git a/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp b/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
--- a/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
+++ b/mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp
@@ -25,7 +25,7 @@
 #define DEBUG_TYPE "pattern-matcher"
 
 /// The max number of iterations scanning for pattern match.
-static unsigned maxPatternMatchIterations = 10;
+static unsigned maxPatternMatchIterations = MAX_PATTERN_MATCH_ITERATIONS;
 
 //===----------------------------------------------------------------------===//
 // GreedyPatternRewriteDriver
@@ -219,13 +219,15 @@
 ///
 LogicalResult
 mlir::applyPatternsAndFoldGreedily(Operation *op,
-                                   const FrozenRewritePatternList &patterns) {
+                                   const FrozenRewritePatternList &patterns,
+				   unsigned max_iterations /*= MAXPATTERNMATCHITERATIONS*/) {
   return applyPatternsAndFoldGreedily(op->getRegions(), patterns);
 }
 /// Rewrite the given regions, which must be isolated from above.
 LogicalResult
 mlir::applyPatternsAndFoldGreedily(MutableArrayRef<Region> regions,
-                                   const FrozenRewritePatternList &patterns) {
+                                   const FrozenRewritePatternList &patterns,
+				   unsigned max_iterations /*= MAXPATTERNMATCHITERATIONS*/) {
   if (regions.empty())
     return success();
 
@@ -241,10 +243,10 @@
 
   // Start the pattern driver.
   GreedyPatternRewriteDriver driver(regions[0].getContext(), patterns);
-  bool converged = driver.simplify(regions, maxPatternMatchIterations);
+  bool converged = driver.simplify(regions, max_iterations);
   LLVM_DEBUG(if (!converged) {
     llvm::dbgs() << "The pattern rewrite doesn't converge after scanning "
-                 << maxPatternMatchIterations << " times";
+                 << max_iterations << " times";
   });
   return success(converged);
 }