gcc/testsuite/gcc.dg/tree-ssa/ifc-pr68583.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fdump-tree-ifcvt-blocks-details" } */
   3
   4 void foo (long *a)
   5 {
   6   int i;
   7   for (i = 0; i < 100; i+=2)
   8     {
   9       long *p = &a[i+1];
  10       if (a[i] == 0)
  11         {
  12           *p = 2;
  13           a[i] = 3;
  14         }
  15       else
  16         {
  17           *p = 3;
  18           a[i] = 4;
  19         }
  20     }
  21 }
  22
  23 /* { dg-final { scan-tree-dump "Applying if-conversion" "ifcvt" } } */
  24 /* We insert into code
  25    if (LOOP_VECTORIZED (...))
  26    which is folded by vectorizer.  Both outgoing edges must have probability
  27    100% so the resulting profile match after folding.  */
  28 /* { dg-final { scan-tree-dump-times "Invalid sum of outgoing probabilities 200.0" 1 "ifcvt" } } */
  29 /* { dg-final { scan-tree-dump-times "Invalid sum of incoming counts" 1 "ifcvt" } } */
  30