r235905 - in /trunk/gcc: ChangeLog function.c s...

[segher@gcc.gnu.org]

Author: segher
Date: Wed May  4 20:57:08 2016
New Revision: 235905

URL: https://gcc.gnu.org/viewcvs?rev=235905&root=gcc&view=rev
Log:
shrink-wrap: Remove complicated simple_return manipulations

Now that cfgcleanup knows how to optimize with return statements, the
epilogue insertion code doesn't have to deal with it itself anymore.


	* function.c (emit_use_return_register_into_block): Delete.
	(gen_return_pattern): Delete.
	(emit_return_into_block): Delete.
	(active_insn_between): Delete.
	(convert_jumps_to_returns): Delete.
	(emit_return_for_exit): Delete.
	(thread_prologue_and_epilogue_insns): Delete all code dealing with
	simple_return for shrink-wrapped blocks.
	* shrink-wrap.c (try_shrink_wrapping): Insert simple_return at the
	end of blocks that need one.
	(get_unconverted_simple_return): Delete.
	(convert_to_simple_return): Delete.
	* shrink-wrap.c (get_unconverted_simple_return): Delete declaration.
	(convert_to_simple_return): Ditto.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/function.c
    trunk/gcc/shrink-wrap.c
    trunk/gcc/shrink-wrap.h