gcc/testsuite/gcc.dg/vect/no-scevccp-outer-6.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 40
   7
   8 __attribute__ ((noinline)) int
   9 foo (int * __restrict__ b, int k){
  10   int i,j;
  11   int sum,x;
  12   int a[N];
  13
  14   for (i = 0; i < N; i++) {
  15     sum = b[i];
  16     for (j = 0; j < N; j++) {
  17       sum += j;
  18     }
  19     a[i] = sum;
  20   }
  21
  22   return a[k];
  23 }
  24
  25 int main (void)
  26 {
  27   int i,j;
  28   int sum;
  29   int b[N];
  30   int a[N];
  31
  32   check_vect ();
  33
  34   for (i=0; i<N; i++)
  35     b[i] = i + 2;
  36
  37   for (i=0; i<N; i++)
  38     a[i] = foo (b,i);
  39
  40     /* check results:  */
  41 #pragma GCC novector
  42   for (i=0; i<N; i++)
  43     {
  44       sum = b[i];
  45       for (j = 0; j < N; j++){
  46         sum += j;
  47       }
  48       if (a[i] != sum)
  49         abort();
  50     }
  51
  52   return 0;
  53 }
  54
  55 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" { xfail { unaligned_stack || { vect_no_align && { ! vect_hw_misalign } } } } } } */
  56 /* Exclude widening of i * 4 in the calculation of a[i].  */
  57 /* { dg-final { scan-tree-dump-times {vect_recog_widen_mult_pattern: detected: [^\n]* \* ([^4]|4[^;])} 1 "vect" { xfail *-*-* } } } */