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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -msse" } */
   3
   4 #include <xmmintrin.h>
   5 static const __m128 v_sign = {-.0f, -.0f, -.0f, -.0f};
   6 static const __m128 v_half = {0.5f, 0.5f, 0.5f, 0.5f};
   7 static const __m128 v_one  = {1.0f, 1.0f, 1.0f, 1.0f};
   8 static inline __m128 insn_ABS (__m128 a)
   9 {
  10   return _mm_andnot_ps (v_sign, a);
  11 }
  12 __m128 voodoo (__m128 a)
  13 {
  14   __m128 x = insn_ABS (a), y = _mm_rsqrt_ps (x);
  15   y = _mm_add_ps (_mm_mul_ps (_mm_sub_ps (_mm_setzero_ps(), _mm_sub_ps (_mm_mul_ps (x, _mm_add_ps (_mm_mul_ps (y, y), _mm_setzero_ps())), v_one)), _mm_add_ps (_mm_mul_ps (y, v_half), _mm_setzero_ps())), y);
  16   return y;
  17 }