diff --git a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
--- a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
@@ -239,6 +239,7 @@
   if (auto splatAttr = attr.dyn_cast<SplatElementsAttr>()) {
     llvm::Type *elementType;
     uint64_t numElements;
+    bool isScalable = false;
     if (auto *arrayTy = dyn_cast<llvm::ArrayType>(llvmType)) {
       elementType = arrayTy->getElementType();
       numElements = arrayTy->getNumElements();
@@ -248,6 +249,7 @@
     } else if (auto *sVectorTy = dyn_cast<llvm::ScalableVectorType>(llvmType)) {
       elementType = sVectorTy->getElementType();
       numElements = sVectorTy->getMinNumElements();
+      isScalable = true;
     } else {
       llvm_unreachable("unrecognized constant vector type");
     }
@@ -265,7 +267,7 @@
       return nullptr;
     if (llvmType->isVectorTy())
       return llvm::ConstantVector::getSplat(
-          llvm::ElementCount::get(numElements, /*Scalable=*/false), child);
+          llvm::ElementCount::get(numElements, /*Scalable=*/isScalable), child);
     if (llvmType->isArrayTy()) {
       auto *arrayType = llvm::ArrayType::get(elementType, numElements);
       SmallVector<llvm::Constant *, 8> constants(numElements, child);
diff --git a/mlir/test/Target/LLVMIR/llvmir-types.mlir b/mlir/test/Target/LLVMIR/llvmir-types.mlir
--- a/mlir/test/Target/LLVMIR/llvmir-types.mlir
+++ b/mlir/test/Target/LLVMIR/llvmir-types.mlir
@@ -90,6 +90,8 @@
 llvm.func @return_v4_i32() -> vector<4xi32>
 // CHECK: declare <4 x float> @return_v4_float()
 llvm.func @return_v4_float() -> vector<4xf32>
+// CHECK: declare <vscale x 4 x float> @return_vs_4_float()
+llvm.func @return_vs_4_float() -> vector<[4]xf32>
 // CHECK: declare <vscale x 4 x i32> @return_vs_4_i32()
 llvm.func @return_vs_4_i32() -> !llvm.vec<?x4 x i32>
 // CHECK: declare <vscale x 8 x half> @return_vs_8_half()
diff --git a/mlir/test/Target/LLVMIR/llvmir.mlir b/mlir/test/Target/LLVMIR/llvmir.mlir
--- a/mlir/test/Target/LLVMIR/llvmir.mlir
+++ b/mlir/test/Target/LLVMIR/llvmir.mlir
@@ -907,6 +907,13 @@
   llvm.return %0 : vector<4xf32>
 }
 
+// CHECK-LABEL: @vector_splat_1d_scalable
+llvm.func @vector_splat_1d_scalable() -> vector<[4]xf32> {
+  // CHECK: ret <vscale x 4 x float> zeroinitializer
+  %0 = llvm.mlir.constant(dense<0.000000e+00> : vector<[4]xf32>) : vector<[4]xf32>
+  llvm.return %0 : vector<[4]xf32>
+}
+
 // CHECK-LABEL: @vector_splat_2d
 llvm.func @vector_splat_2d() -> !llvm.array<4 x vector<16 x f32>> {
   // CHECK: ret [4 x <16 x float>] zeroinitializer