--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/X86/trunc-ext-ld-st.ll	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,79 @@
+; RUN: llc < %s -march=x86-64 -mcpu=corei7 -mattr=+sse4.1 | FileCheck %s
+
+;CHECK-LABEL: load_2_i8:
+; A single 16-bit load
+;CHECK: pmovzxbq
+;CHECK: paddq
+;CHECK: pshufb
+; A single 16-bit store
+;CHECK: movw
+;CHECK: ret
+
+define void @load_2_i8(<2 x i8>* %A)  {
+   %T = load <2 x i8>* %A
+   %G = add <2 x i8> %T, <i8 9, i8 7>
+   store <2 x i8> %G, <2 x i8>* %A
+   ret void
+} 
+
+;CHECK-LABEL: load_2_i16:
+; Read 32-bits
+;CHECK: pmovzxwq
+;CHECK: paddq
+;CHECK: pshufb
+;CHECK: movd
+;CHECK: ret
+define void @load_2_i16(<2 x i16>* %A)  {
+   %T = load <2 x i16>* %A
+   %G = add <2 x i16> %T, <i16 9, i16 7>
+   store <2 x i16> %G, <2 x i16>* %A
+   ret void
+} 
+
+;CHECK-LABEL: load_2_i32:
+;CHECK: pmovzxdq
+;CHECK: paddq
+;CHECK: pshufd
+;CHECK: ret
+define void @load_2_i32(<2 x i32>* %A)  {
+   %T = load <2 x i32>* %A
+   %G = add <2 x i32> %T, <i32 9, i32 7>
+   store <2 x i32> %G, <2 x i32>* %A
+   ret void
+} 
+
+;CHECK-LABEL: load_4_i8:
+;CHECK: pmovzxbd
+;CHECK: paddd
+;CHECK: pshufb
+;CHECK: ret
+define void @load_4_i8(<4 x i8>* %A)  {
+   %T = load <4 x i8>* %A
+   %G = add <4 x i8> %T, <i8 1, i8 4, i8 9, i8 7>
+   store <4 x i8> %G, <4 x i8>* %A
+   ret void
+} 
+
+;CHECK-LABEL: load_4_i16:
+;CHECK: pmovzxwd
+;CHECK: paddd
+;CHECK: pshufb
+;CHECK: ret
+define void @load_4_i16(<4 x i16>* %A)  {
+   %T = load <4 x i16>* %A
+   %G = add <4 x i16> %T, <i16 1, i16 4, i16 9, i16 7>
+   store <4 x i16> %G, <4 x i16>* %A
+   ret void
+} 
+
+;CHECK-LABEL: load_8_i8:
+;CHECK: pmovzxbw
+;CHECK: paddw
+;CHECK: pshufb
+;CHECK: ret
+define void @load_8_i8(<8 x i8>* %A)  {
+   %T = load <8 x i8>* %A
+   %G = add <8 x i8> %T, %T
+   store <8 x i8> %G, <8 x i8>* %A
+   ret void
+}