gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-28.c

   1 /* PR37997 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-pre-details -fno-code-hoisting" } */
   4
   5 int foo (int i, int b, int result)
   6 {
   7   int mask;
   8   if (b)
   9     mask = -2;
  10   else
  11     mask = 0;
  12   result = i + 1;
  13   result = result & mask;
  14   return result;
  15 }
  16
  17 /* We should insert i + 1 into the if (b) path as well as the simplified
  18    i + 1 & -2 expression.  And do replacement with two PHI temps.  */
  19 /* With hoisting enabled we'd hoist i + 1 to before the if, retaining
  20    only one PHI node.  */
  21
  22 /* { dg-final { scan-tree-dump-times "with prephitmp" 2 "pre" } } */