| ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx -mattr=+avx | FileCheck %s | 
 |  | 
 | ; CHECK-NOT: vunpck | 
 | ; CHECK: vextractf128 $1 | 
 | define <8 x float> @A(<8 x float> %a) nounwind uwtable readnone ssp { | 
 | entry: | 
 |   %shuffle = shufflevector <8 x float> %a, <8 x float> undef, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 8, i32 8, i32 8, i32 8> | 
 |   ret <8 x float> %shuffle | 
 | } | 
 |  | 
 | ; CHECK-NOT: vunpck | 
 | ; CHECK: vextractf128 $1 | 
 | define <4 x double> @B(<4 x double> %a) nounwind uwtable readnone ssp { | 
 | entry: | 
 |   %shuffle = shufflevector <4 x double> %a, <4 x double> undef, <4 x i32> <i32 2, i32 3, i32 4, i32 4> | 
 |   ret <4 x double> %shuffle | 
 | } | 
 |  |