diff --git a/test/CodeGen/X86/expand-integer-x86_64-intrinsic-error.ll b/test/CodeGen/X86/expand-integer-x86_64-intrinsic-error.ll
new file mode 100644
index 00000000000..34f3c258f73
--- /dev/null
+++ b/test/CodeGen/X86/expand-integer-x86_64-intrinsic-error.ll
@@ -0,0 +1,11 @@
+;RUN: not llc < %s -mtriple=i686-unknown-unknown -mattr=sse2 2>&1 | FileCheck %s --check-prefix=CHECK
+
+; Make sure we generate fatal error from the type legalizer for using a 64-bit
+; mode intrinsics in 32-bit mode. We used to use an llvm_unreachable.
+
+; CHECK: LLVM ERROR: Do not know how to expand the result of this operator!
+define i64 @test_x86_sse2_cvtsd2si64(<2 x double> %a0) {
+  %res = call i64 @llvm.x86.sse2.cvtsd2si64(<2 x double> %a0) ; <i64> [#uses=1]
+  ret i64 %res
+}
+declare i64 @llvm.x86.sse2.cvtsd2si64(<2 x double>) nounwind readnone