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      1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -target-feature +avx | FileCheck %s
      2 
      3 namespace test1 {
      4 typedef double __m256d __attribute__((__vector_size__(32)));
      5 
      6 class PR22753 {
      7 public:
      8   __m256d data;
      9 };
     10 
     11 // CHECK: define <4 x double> @_ZN5test14testENS_7PR22753E(<4 x double>
     12 PR22753 test(PR22753 x) {
     13   return x;
     14 }
     15 }
     16 
     17 namespace test2 {
     18 typedef double __m128d __attribute__((__vector_size__(16)));
     19 typedef float __m128 __attribute__((__vector_size__(16)));
     20 typedef double __m256d __attribute__((__vector_size__(32)));
     21 typedef float __m256 __attribute__((__vector_size__(32)));
     22 
     23 union U1 {
     24   __m128  v1;
     25   __m128d v2;
     26 };
     27 
     28 union UU1 {
     29   union U1;
     30   __m128d v3;
     31 };
     32 
     33 // CHECK: define <2 x double> @_ZN5test27PR23082ENS_3UU1E(<2 x double>
     34 UU1 PR23082(UU1 x) {
     35   return x;
     36 }
     37 
     38 union U2 {
     39   __m256  v1;
     40   __m256d v2;
     41 };
     42 
     43 union UU2 {
     44   union U2;
     45   __m256d v3;
     46 };
     47 
     48 // CHECK: define <4 x double> @_ZN5test27PR23082ENS_3UU2E(<4 x double>
     49 UU2 PR23082(UU2 x) {
     50   return x;
     51 }
     52 }
     53 
     54 namespace test3 {
     55 union U {
     56   __attribute__((__vector_size__(32))) float f1;
     57   int f2;
     58 };
     59 // CHECK: define i32 @_ZN5test31fENS_1UE({{.*}}* byval align 32
     60 int f(U u) { return u.f2; }
     61 }
     62