[Bug tree-optimization/105801] New: Missed CCP with -ftrivial-auto-var-init=zero

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105801

            Bug ID: 105801
           Summary: Missed CCP with -ftrivial-auto-var-init=zero
           Product: gcc
           Version: 12.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
  Target Milestone: ---

int foo (int flag)
{
  int i;
  if (flag)
    i = 1;
  return i;
}

CCP used to optimize this to 'return 1;' but with -ftrivial-auto-var-init=zero
only FRE does this now.