diff --git a/test/CodeGen/X86/prefetch.ll b/test/CodeGen/X86/prefetch.ll
new file mode 100644
index 0000000..bcc6e3a
--- /dev/null
+++ b/test/CodeGen/X86/prefetch.ll
@@ -0,0 +1,15 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1 | grep prefetchnta
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1 | grep prefetcht0
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1 | grep prefetcht1
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1 | grep prefetcht2
+
+define void @t(i8* %ptr) nounwind  {
+entry:
+	tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 1 )
+	tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 2 )
+	tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 3 )
+	tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 0 )
+	ret void
+}
+
+declare void @llvm.prefetch(i8*, i32, i32) nounwind