gcc/testsuite/gcc.dg/vect/vect-6.c

   1 /* { dg-do run { target powerpc*-*-* } } */
   2 /* { dg-do run { target i?86-*-* x86_64-*-* } } */
   3 /* { dg-do run { target mipsisa64*-*-* } } */
   4 /* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -maltivec" { target powerpc*-*-* } } */
   5 /* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -msse2" { target i?86-*-* x86_64-*-* } } */
   6 /* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-stats -mpaired-single" { target mipsisa64*-*-* } } */
   7
   8 #include <stdarg.h>
   9 #include "tree-vect.h"
  10
  11 #define N 16
  12
  13 float results1[N] = {192.00,240.00,288.00,336.00,384.00,432.00,480.00,528.00,0.00};
  14 float results2[N] = {0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,54.00,120.00,198.00,288.00,390.00,504.00,630.00};
  15
  16 int main1 ()
  17 {
  18   int i;
  19   float a[N] = {0};
  20   float e[N] = {0};
  21   float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  22   float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  23
  24   for (i = 0; i < N/2; i++)
  25     {
  26       a[i] = b[i+N/2] * c[i+N/2] - b[i] * c[i];
  27       e[i+N/2] = b[i] * c[i+N/2] + b[i+N/2] * c[i];
  28     }
  29
  30   /* check results:  */
  31   for (i=0; i<N; i++)
  32     {
  33       if (a[i] != results1[i] || e[i] != results2[i])
  34         abort();
  35     }
  36
  37
  38   for (i = 1; i <=N-4; i++)
  39     {
  40       a[i+3] = b[i-1];
  41     }
  42
  43   /* check results:  */
  44   for (i = 1; i <=N-4; i++)
  45     {
  46       if (a[i+3] != b[i-1])
  47         abort ();
  48     }
  49
  50   return 0;
  51 }
  52
  53 int main (void)
  54 {
  55   check_vect ();
  56
  57   return main1 ();
  58 }
  59
  60 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" } } */
  61
  62