egcs/gcc ChangeLog flow.c gcse.c

[Richard Henderson]

CVSROOT:	/egcs/carton/cvsfiles
Module name:	egcs
Changes by:	rth@egcs.cygnus.com	98/10/08 01:26:19

Modified files:
	gcc            : ChangeLog flow.c gcse.c 

Log message:
	* flow.c (find_basic_blocks): Calc upper bound for extra nops in
	max_uids_for_flow.
	(find_basic_blocks_1): Add a nop to the end of a basic block when
	a trailing call insn does not have abnormal control flow.
	* gcse.c (pre_transpout): New variable.
	(alloc_pre_mem, free_pre_mem, dump_pre_data): Bookkeeping for it.
	(compute_pre_transpout): Calculate it.
	(compute_pre_ppinout): Use it to eliminate impossible placements
	due to abnormal control flow through calls.
	(compute_pre_data): Call compute_pre_transpout.