| // { dg-do run { target i?86-*-* x86_64-*-* } } |
| // { dg-require-effective-target sse2_runtime } |
| // { dg-options "-O -msse2" } |
| |
| extern "C" void abort (void); |
| |
| typedef long long __m128i __attribute__ ((__vector_size__ (16), __may_alias__)); |
| typedef short A __attribute__((__may_alias__)); |
| |
| __m128i __attribute__((noinline)) |
| shuf(const __m128i v) |
| { |
| __m128i r; |
| |
| reinterpret_cast<A *>(&r)[5] = reinterpret_cast<const A *>(&v)[4]; |
| return r; |
| } |
| |
| int main() |
| { |
| __attribute__((aligned(16))) short mem[8] = { 0, 1, 2, 3, 4, 5, 6, 7 }; |
| |
| *reinterpret_cast<__m128i *>(mem) = shuf (*reinterpret_cast<__m128i *>(mem)); |
| |
| if (mem[5] != 4) |
| abort (); |
| |
| return 0; |
| } |
