diff --git a/mlir/include/mlir/Dialect/Vector/VectorOps.td b/mlir/include/mlir/Dialect/Vector/VectorOps.td
--- a/mlir/include/mlir/Dialect/Vector/VectorOps.td
+++ b/mlir/include/mlir/Dialect/Vector/VectorOps.td
@@ -270,6 +270,7 @@
     }
   }];
   let assemblyFormat = "$source attr-dict `:` type($source) `to` type($vector)";
+  let hasFolder = 1;
 }
 
 def Vector_ShuffleOp :
diff --git a/mlir/lib/Dialect/Vector/VectorOps.cpp b/mlir/lib/Dialect/Vector/VectorOps.cpp
--- a/mlir/lib/Dialect/Vector/VectorOps.cpp
+++ b/mlir/lib/Dialect/Vector/VectorOps.cpp
@@ -929,6 +929,17 @@
   return success();
 }
 
+OpFoldResult BroadcastOp::fold(ArrayRef<Attribute> operands) {
+  if (auto cst = source().getDefiningOp<ConstantOp>()) {
+    auto shapedType = getResult().getType().cast<ShapedType>();
+    if (cst.getType().isIntOrIndexOrFloat())
+      return DenseElementsAttr::get(shapedType, cst.value());
+    if (auto attr = cst.value().dyn_cast<SplatElementsAttr>())
+      return DenseElementsAttr::get(shapedType, attr.getSplatValue());
+  }
+  return {};
+}
+
 //===----------------------------------------------------------------------===//
 // ShuffleOp
 //===----------------------------------------------------------------------===//
diff --git a/mlir/test/Dialect/Linalg/transform-patterns-matmul-to-vector.mlir b/mlir/test/Dialect/Linalg/transform-patterns-matmul-to-vector.mlir
--- a/mlir/test/Dialect/Linalg/transform-patterns-matmul-to-vector.mlir
+++ b/mlir/test/Dialect/Linalg/transform-patterns-matmul-to-vector.mlir
@@ -13,13 +13,8 @@
 }
 
 // CHECK-LABEL:func @matmul
-//      CHECK: vector.broadcast {{.*}} : f32 to vector<8x16xf32>
 //      CHECK: store {{.*}}[] : memref<vector<8x16xf32>>
-//
-//      CHECK: vector.broadcast {{.*}} : f32 to vector<16x12xf32>
 //      CHECK: store {{.*}}[] : memref<vector<16x12xf32>>
-//
-//      CHECK: vector.broadcast {{.*}} : f32 to vector<8x12xf32>
 //      CHECK: store {{.*}}[] : memref<vector<8x12xf32>>
 //
 //      CHECK: linalg.copy
diff --git a/mlir/test/Dialect/Vector/canonicalize.mlir b/mlir/test/Dialect/Vector/canonicalize.mlir
--- a/mlir/test/Dialect/Vector/canonicalize.mlir
+++ b/mlir/test/Dialect/Vector/canonicalize.mlir
@@ -385,3 +385,26 @@
   %2 = vector.bitcast %1 : vector<4xi16> to vector<2xi32>
   return %0, %2 : vector<4x8xf32>, vector<2xi32>
 }
+
+// -----
+
+// CHECK-LABEL: broadcast_folding1
+//       CHECK: constant
+//   CHECK-NOT: vector.broadcast
+func @broadcast_folding1() -> vector<4xf32> {
+  %0 = constant 42.0 : f32
+  %1 = vector.broadcast %0 : f32 to vector<4xf32>
+  return %1 : vector<4xf32>
+}
+
+// -----
+
+// CHECK-LABEL: @broadcast_folding2
+//       CHECK: constant
+//   CHECK-NOT: vector.broadcast
+func @broadcast_folding2() -> vector<4x16xf32> {
+  %0 = constant 42.0 : f32
+  %1 = vector.broadcast %0 : f32 to vector<16xf32>
+  %2 = vector.broadcast %1 : vector<16xf32> to vector<4x16xf32>
+  return %2 : vector<4x16xf32>
+}