diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td
@@ -296,8 +296,9 @@
                    OptionalAttr<I64Attr>:$alignment);
   let results = (outs Res<LLVM_AnyPointer, "", [MemAlloc<AutomaticAllocationScopeResource>]>:$res);
   string llvmBuilder = [{
+    auto addrSpace = $_resultType->getPointerAddressSpace();
     auto *inst = builder.CreateAlloca(
-      $_resultType->getPointerElementType(), $arraySize);
+        $_resultType->getPointerElementType(), addrSpace, $arraySize);
     }] # setAlignmentCode # [{
     $res = inst;
   }];
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
@@ -1176,6 +1176,8 @@
   llvm.alloca %size x i32 {alignment = 0} : (i64) -> (!llvm.ptr<i32>)
   // CHECK-NEXT: alloca {{.*}} align 8
   llvm.alloca %size x i32 {alignment = 8} : (i64) -> (!llvm.ptr<i32>)
+  // CHECK-NEXT: alloca {{.*}} addrspace(3)
+  llvm.alloca %size x i32 {alignment = 0} : (i64) -> (!llvm.ptr<i32, 3>)
   llvm.return
 }