gcc/testsuite/gcc.target/i386/pr55829.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -msse3 -fno-expensive-optimizations" } */
   3
   4 typedef double __m128d __attribute__ ((__vector_size__ (16)));
   5
   6 extern double p1[];
   7 extern double p2[];
   8 extern double ck[];
   9 extern int n;
  10
  11 __attribute__((__noinline__, __noclone__)) int chk_pd (double *v1, double *v2)
  12 {
  13   return v2[n] != v1[n];
  14 }
  15
  16 static inline void sse3_test_movddup_reg_subsume_ldsd (double *i1, double *r)
  17 {
  18   __m128d t1 = (__m128d){*i1, 0};
  19   __m128d t2 = __builtin_ia32_shufpd (t1, t1, 0);
  20   __builtin_ia32_storeupd (r, t2);
  21 }
  22
  23 int sse3_test (void)
  24 {
  25   int i = 0;
  26   int fail = 0;
  27   for (; i < 80; i += 1)
  28     {
  29       ck[0] = p1[0];
  30       fail += chk_pd (ck, p2);
  31       sse3_test_movddup_reg_subsume_ldsd (p1, p2);
  32     }
  33   return fail;
  34 }