gcc/testsuite/gcc.dg/tree-ssa/ifc-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-c -O2 -ftree-vectorize -fdump-tree-ifcvt-stats-blocks-details" { target *-*-* } } */
   3
   4 void
   5 dct_unquantize_h263_inter_c (short *block, int n, int qscale, int nCoeffs)
   6 {
   7   int i, level, qmul, qadd;
   8
   9   qadd = (qscale - 1) | 1;
  10   qmul = qscale << 1;
  11
  12   for (i = 0; i <= nCoeffs; i++)
  13     {
  14       level = block[i];
  15       if (level < 0)
  16         level = level * qmul - qadd;
  17       else
  18         level = level * qmul + qadd;
  19       block[i] = level;
  20     }
  21 }
  22
  23 /* { dg-final { scan-tree-dump-times "Applying if-conversion" 1 "ifcvt" } } */
  24
  25 /* We insert into code
  26    if (LOOP_VECTORIZED (...))
  27    which is folded by vectorizer.  Both outgoing edges must have probability
  28    100% so the resulting profile match after folding.  */
  29 /* { dg-final { scan-tree-dump-times "Invalid sum of outgoing probabilities 200.0" 1 "ifcvt" } } */
  30 /* { dg-final { scan-tree-dump-times "Invalid sum of incoming counts" 1 "ifcvt" } } */