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

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include <stdio.h>
   5 #include "tree-vect.h"
   6
   7 #define N 128
   8
   9 unsigned int uc[N];
  10
  11 /* Vectorization of reduction using loop-aware SLP.  */
  12
  13 __attribute__ ((noinline))
  14 int main1 (int n, int res0, int res1, int res2, int res3, int res4, int res5, int res6, int res7)
  15 {
  16   int i;
  17   unsigned int max0 = 5, max1 = 10, max2 = 20, max3 = 30, max4 = 2, max5 = 13, max6 = 7, max7 = 313;
  18
  19   for (i = 0; i < n; i++) {
  20     max2 = max2 < uc[8*i+2] ? uc[8*i+2] : max2;
  21     max3 = max3 < uc[8*i+3] ? uc[8*i+3] : max3;
  22     max1 = max1 < uc[8*i+1] ? uc[8*i+1] : max1;
  23     max7 = max7 < uc[8*i+7] ? uc[8*i+7] : max7;
  24     max6 = max6 < uc[8*i+6] ? uc[8*i+6] : max6;
  25     max0 = max0 < uc[8*i] ? uc[8*i] : max0;
  26     max4 = max4 < uc[8*i+4] ? uc[8*i+4] : max4;
  27     max5 = max5 < uc[8*i+5] ? uc[8*i+5] : max5;
  28   }
  29
  30   /* Check results:  */
  31   if (max0 != res0
  32       || max1 != res1
  33       || max2 != res2
  34       || max3 != res3
  35       || max4 != res4
  36       || max5 != res5
  37       || max6 != res6
  38       || max7 != res7)
  39     abort ();
  40
  41   return 0;
  42 }
  43
  44 int main (void)
  45 {
  46   int i;
  47
  48   check_vect ();
  49
  50   for (i = 0; i < N; i++)
  51     {
  52       uc[i] = i+3;
  53       __asm__ volatile ("");
  54     }
  55
  56   main1 (N/8, 123, 124, 125, 126, 127, 128, 129, 313);
  57   return 0;
  58 }
  59
  60 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail vect_no_int_max } } } */
  61 /* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { xfail vect_no_int_max } } } */
  62 /* { dg-final { cleanup-tree-dump "vect" } } */
  63