diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMTypes.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMTypes.cpp
index 18008c614bd5..e27650b3297d 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMTypes.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMTypes.cpp
@@ -58,8 +58,9 @@ llvm::TypeSize LLVMType::getPrimitiveSizeInBits() {
         llvm::ElementCount elementCount = t.getElementCount();
         assert(!elementSize.isScalable() &&
                "vector type should have fixed-width elements");
-        return llvm::TypeSize(elementSize.getFixedSize() * elementCount.Min,
-                              elementCount.Scalable);
+        return llvm::TypeSize(elementSize.getFixedSize() *
+                                  elementCount.getKnownMinValue(),
+                              elementCount.isScalable());
       })
       .Default([](LLVMType ty) {
         assert((ty.isa<LLVMVoidType, LLVMLabelType, LLVMMetadataType,