Re: [PATCH] tcg: `reachable_code_pass()` remove empty else-branch

[Anton Johansson via]

On 3/3/23 16:39, Taylor Simpson wrote:

      dead = false;
      remove = false;

      if (label->refs == 1) {
          TCGOp *op_prev = NULL;
          do {
              op_prev = QTAILQ_PREV(op_prev, link);

You can't use op_prev as the argument here.  It is NULL the first time through 
the loop ☹

Ah right

    TCGop *op_prev = op;

should do it.