1 /* { dg-do compile } */ 2 /* { dg-options "-O -ffast-math -msse2 -fdump-tree-optimized" } */ 3 4 #include <emmintrin.h> 5 f(__m128d x)6int 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" } } */ 16