Bernd Schmidt <[EMAIL PROTECTED]> writes: > Let me ask a really stupid question. Where are we supposed to be > clearing BB_DIRTY flags? > > I instrumented the old version of the struct-equiv patches to give me > some information about the basic blocks it's being called for, and > noticed that blocks always remain dirty, even though we're calling > update_life_info_in_dirty_blocks. A quick grep showed no place in the > compiler where the flag is cleared. Under these circumstances, it's > no surprise that we keep doing global liveness updates during > crossjumping.
The function clear_bb_flags clears the BB_DIRTY flag. It is called from a few places, including cleanup_cfg. Ian
