1*67e74705SXin Li// RUN: %clang_cc1 %s -emit-llvm -O0 -o - | FileCheck %s 2*67e74705SXin Li 3*67e74705SXin Litypedef char char3 __attribute((ext_vector_type(3)));; 4*67e74705SXin Li 5*67e74705SXin Li// Check for optimized vec3 load/store which treats vec3 as vec4. 6*67e74705SXin Livoid foo(char3 *P, char3 *Q) { 7*67e74705SXin Li *P = *Q; 8*67e74705SXin Li // CHECK: %{{.*}} = shufflevector <4 x i8> %{{.*}}, <4 x i8> undef, <3 x i32> <i32 0, i32 1, i32 2> 9*67e74705SXin Li} 10