gcc/testsuite/gcc.target/i386/pr61403.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ffast-math -ftree-vectorize -msse4.2 -mtune=corei7" } */
   3
   4 #include <math.h>
   5
   6 struct XYZ
   7 {
   8   float x;
   9   float y;
  10   float z;
  11 };
  12
  13 void
  14 norm (struct XYZ *in, struct XYZ *out, int size)
  15 {
  16   int i;
  17   for (i = 0; i < size; ++i)
  18     {
  19       float n = sqrt (in[i].x * in[i].x + in[i].y * in[i].y + in[i].z * in[i].z);
  20       out[i].x = in[i].x / n;
  21       out[i].y = in[i].y / n;
  22       out[i].z = in[i].z / n;
  23     }
  24 }
  25
  26 /* { dg-final { scan-assembler "rsqrtps" } } */