+ * gcse.c: Update comment at top.
+ Update comment on mem handling.
+ mem_last_set, mem_first_set, mem_set_in_block: gone.
+ Declaration of reg_set_info: gone.
+ (oprs_unchanged_p): Don't use mem_*set_* anymore. They are
+ pointless with load_killed_in_block_p (they are *more*
+ conservative then it, not less, and less accurate).
+ (oprs_not_set_p): Ditto.
+ (alloc_gcse_mem): Don't allocate mem_set_in_block
+ (free_gcse_mem): Don't free it, either.
+ (record_last_mem_set_info): Update comment in front, remove
+ mem_*set_* stuff. Note the reason we don't handle stores directly
+ here.
+ (compute_hash_table): Update comments to reflect reality. Remove
+ mem_*set_* references.
+ (reset_opr_set_tables): Remove mem_*set_* references.
+ (mark_call): Ditto.
+ (mark_set): Ditto. Also remove double sets of bitmaps for REG's.
+ (mark_clobber): Ditto (on both parts, we double set here too).
+ (expr_killed_p): Remove mem_set_in_block test.
+ (compute_transp): Remove mem_set_in_block test.
+