gcc/testsuite/gcc.target/i386/pr48708.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -msse2" } */
   3
   4 #include <emmintrin.h>
   5
   6 typedef long long T __attribute__((may_alias));
   7 struct S { __m128i d; };
   8
   9 __m128i
  10 foo (long long *x, struct S *y, __m128i *z)
  11 {
  12   struct S s = *y;
  13   ((T *) &s.d)[0] = *x;
  14   return _mm_cmpeq_epi16 (s.d, *z);
  15 }