gcc/testsuite/gcc.dg/vect/slp-reduc-4.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 unsigned int uc[N];
   9
  10 /* Vectorization of reduction using loop-aware SLP.  */
  11
  12 __attribute__ ((noinline))
  13 int main1 (int n, int res0, int res1, int res2, int res3, int res4, int res5, int res6, int res7)
  14 {
  15   int i;
  16   unsigned int max0 = 5, max1 = 10, max2 = 20, max3 = 30, max4 = 2, max5 = 13, max6 = 7, max7 = 313;
  17
  18   for (i = 0; i < n; i++) {
  19     max2 = max2 < uc[8*i+2] ? uc[8*i+2] : max2;
  20     max3 = max3 < uc[8*i+3] ? uc[8*i+3] : max3;
  21     max1 = max1 < uc[8*i+1] ? uc[8*i+1] : max1;
  22     max7 = max7 < uc[8*i+7] ? uc[8*i+7] : max7;
  23     max6 = max6 < uc[8*i+6] ? uc[8*i+6] : max6;
  24     max0 = max0 < uc[8*i] ? uc[8*i] : max0;
  25     max4 = max4 < uc[8*i+4] ? uc[8*i+4] : max4;
  26     max5 = max5 < uc[8*i+5] ? uc[8*i+5] : max5;
  27   }
  28
  29   /* Check results:  */
  30   if (max0 != res0
  31       || max1 != res1
  32       || max2 != res2
  33       || max3 != res3
  34       || max4 != res4
  35       || max5 != res5
  36       || max6 != res6
  37       || max7 != res7)
  38     abort ();
  39
  40   return 0;
  41 }
  42
  43 int main (void)
  44 {
  45   int i;
  46
  47   check_vect ();
  48
  49   for (i = 0; i < N; i++)
  50     {
  51       uc[i] = i+3;
  52       __asm__ volatile ("");
  53     }
  54
  55   main1 (N/8, 123, 124, 125, 126, 127, 128, 129, 313);
  56   return 0;
  57 }
  58
  59 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail vect_no_int_max } } } */
  60 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { xfail vect_no_int_max } } } */
  61 /* { dg-final { cleanup-tree-dump "vect" } } */
  62