| // RUN: %clang_cc1 -triple x86_64-apple-macos %s -emit-llvm -o- | FileCheck %s | |
| typedef __attribute__((__ext_vector_type__(4),__aligned__(16))) double simd_double4; | |
| typedef struct { simd_double4 columns[4]; } simd_double4x4; | |
| typedef simd_double4x4 matrix_double4x4; | |
| // CHECK: define{{.*}} void @ident(ptr dead_on_unwind noalias writable sret(%struct.simd_double4x4) align 16 %agg.result | |
| matrix_double4x4 ident(matrix_double4x4 x) { | |
| return x; | |
| } |