gcc/testsuite/gcc.target/i386/avx-cvt-2-vec.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -ffast-math -ftree-vectorize -mavx" } */
   3 /* { dg-require-effective-target avx } */
   4
   5 #ifndef CHECK_H
   6 #define CHECK_H "avx-check.h"
   7 #endif
   8
   9 #ifndef TEST
  10 #define TEST avx_test
  11 #endif
  12
  13 #include CHECK_H
  14
  15 #include "math_m_pi.h"
  16
  17 #define NUM 4
  18
  19 static void
  20 __attribute__((__target__("fpmath=sse")))
  21 init_src (double *src)
  22 {
  23   int i, sign = 1;
  24   double f = rand ();
  25
  26   for (i = 0; i < NUM; i++)
  27     {
  28       src[i] = (i + 1) * f * M_PI * sign;
  29       if (i < (NUM / 2))
  30         {
  31           if ((i % 6) == 0)
  32             f = f * src[i];
  33         }
  34       else if (i == (NUM / 2))
  35         f = rand ();
  36       else if ((i % 6) == 0)
  37         f = 1 / (f * (i + 1) * src[i] * M_PI * sign);
  38       sign = -sign;
  39     }
  40 }
  41
  42 static void
  43 __attribute__((__target__("fpmath=sse")))
  44 TEST (void)
  45 {
  46   double a[NUM];
  47   float r[NUM];
  48   int i;
  49
  50   init_src (a);
  51
  52   for (i = 0; i < NUM; i++)
  53     r[i] = (float) a[i];
  54
  55   /* check results:  */
  56   for (i = 0; i < NUM; i++)
  57     if (r[i] != (float) a[i])
  58       abort();
  59 }