* flow.c (struct reg_cond_life_info): New fields orig_condition
and stores.
(init_propagate_block_info): Set new fields.
(mark_regno_cond_dead): Set and use new fields.
(flush_reg_cond_reg_1): Likewise.
(and_reg_cond, case AND): Check for redundant AND conditions.
(mark_used_reg): Delete unnecessary clears before freeing splay trees.
Set new fields.
From-SVN: r40881
