diff --git a/mlir/lib/Conversion/StandardToSPIRV/StandardToSPIRV.cpp b/mlir/lib/Conversion/StandardToSPIRV/StandardToSPIRV.cpp
--- a/mlir/lib/Conversion/StandardToSPIRV/StandardToSPIRV.cpp
+++ b/mlir/lib/Conversion/StandardToSPIRV/StandardToSPIRV.cpp
@@ -470,6 +470,16 @@
                   ConversionPatternRewriter &rewriter) const override;
 };
 
+/// Converts std.splat to spv.CompositeConstruct.
+class SplatPattern final : public OpConversionPattern<SplatOp> {
+public:
+  using OpConversionPattern<SplatOp>::OpConversionPattern;
+
+  LogicalResult
+  matchAndRewrite(SplatOp op, ArrayRef<Value> operands,
+                  ConversionPatternRewriter &rewriter) const override;
+};
+
 /// Converts memref.store to spv.Store on integers.
 class IntStoreOpPattern final : public OpConversionPattern<memref::StoreOp> {
 public:
@@ -1127,6 +1137,23 @@
   return success();
 }
 
+//===----------------------------------------------------------------------===//
+// SplatOp
+//===----------------------------------------------------------------------===//
+
+LogicalResult
+SplatPattern::matchAndRewrite(SplatOp op, ArrayRef<Value> operands,
+                              ConversionPatternRewriter &rewriter) const {
+  auto dstVecType = op.getType().dyn_cast<VectorType>();
+  if (!dstVecType || !spirv::CompositeType::isValid(dstVecType))
+    return failure();
+  SplatOp::Adaptor adaptor(operands);
+  SmallVector<Value, 4> source(dstVecType.getNumElements(), adaptor.input());
+  rewriter.replaceOpWithNewOp<spirv::CompositeConstructOp>(op, dstVecType,
+                                                           source);
+  return success();
+}
+
 //===----------------------------------------------------------------------===//
 // StoreOp
 //===----------------------------------------------------------------------===//
@@ -1332,7 +1359,7 @@
       AllocOpPattern, DeallocOpPattern, IntLoadOpPattern, IntStoreOpPattern,
       LoadOpPattern, StoreOpPattern,
 
-      ReturnOpPattern, SelectOpPattern,
+      ReturnOpPattern, SelectOpPattern, SplatPattern,
 
       // Type cast patterns
       UIToFPI1Pattern, ZeroExtendI1Pattern, TruncI1Pattern,
diff --git a/mlir/test/Conversion/StandardToSPIRV/std-ops-to-spirv.mlir b/mlir/test/Conversion/StandardToSPIRV/std-ops-to-spirv.mlir
--- a/mlir/test/Conversion/StandardToSPIRV/std-ops-to-spirv.mlir
+++ b/mlir/test/Conversion/StandardToSPIRV/std-ops-to-spirv.mlir
@@ -1249,3 +1249,18 @@
   // CHECK: spv.ReturnValue %[[VAL]]
   return %extract : i32
 }
+
+// -----
+
+//===----------------------------------------------------------------------===//
+// splat
+//===----------------------------------------------------------------------===//
+
+// CHECK-LABEL: func @splat
+//  CHECK-SAME: (%[[A:.+]]: f32)
+//       CHECK:   %[[VAL:.+]] = spv.CompositeConstruct %[[A]], %[[A]], %[[A]], %[[A]] : vector<4xf32>
+//       CHECK:   spv.ReturnValue %[[VAL]]
+func @splat(%f : f32) -> vector<4xf32> {
+  %splat = splat %f : vector<4xf32>
+  return %splat : vector<4xf32>
+}