On 10/25/06, Steven Bosscher <[EMAIL PROTECTED]> wrote:
You could use TREE_USED, but your suggestion implies that dead code should be retained in the program,
May be I misunderstood, but it is not dead code. Here is what Zdenek said, " ... To keep the information valid, we need
> to prevent optimizations from destroying it (e.g., if the number > is n_1 = n_2 - 1, and this is the last use of n_1, we do not want > DCE to remove it);
..." - Devang
