gcc/testsuite/gcc.target/i386/intrinsics_opt-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -ffast-math -msse2 -fdump-tree-optimized" } */
   3
   4 #include <emmintrin.h>
   5
   6 int f(__m128d x){
   7   x = _mm_sub_pd (x, x);
   8   x = _mm_mul_pd (x, x);
   9   double r = 42;
  10   _mm_storeh_pd (&r, x);
  11   int z = r == 0;
  12   return __builtin_constant_p (z) && z;
  13 }
  14
  15 /* { dg-final { scan-tree-dump "return 1;" "optimized" } } */