[Bug tree-optimization/97741] [11 Regression] ICE: verify_gimple failed with "-Os -fno-toplevel-reorder -fno-tree-ccp -fno-tree-fre" since r11-4724

[amacleod at redhat dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97741

--- Comment #4 from Andrew Macleod <amacleod at redhat dot com> ---
btw, the resulting code for this function is cleaned up a lot:
  <bb 2> :
  a = 6;
  goto <bb 4>; [INV]

  <bb 3> :
  c = 0;

  <bb 4> :
  a.0_2 = a;
  if (a.0_2 != 0)
    goto <bb 3>; [INV]
  else
    goto <bb 5>; [INV]

  <bb 5> :
  # e_5 = PHI <0(4)>
  return;