diff --git a/llvm/test/CodeGen/X86/fast-isel-trunc.ll b/llvm/test/CodeGen/X86/fast-isel-trunc.ll
new file mode 100644
index 0000000..f70ff1c
--- /dev/null
+++ b/llvm/test/CodeGen/X86/fast-isel-trunc.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc -march=x86 -fast-isel
+; RUN: llvm-as < %s | llc -march=x86-64 -fast-isel
+
+define i8 @t1(i32 %x) signext nounwind  {
+	%tmp1 = trunc i32 %x to i8
+	ret i8 %tmp1
+}
+
+define i8 @t2(i16 signext %x) signext nounwind  {
+	%tmp1 = trunc i16 %x to i8
+	ret i8 %tmp1
+}