r219711 - in /trunk/gcc: ChangeLog config/nds32...

[jasonwucj@gcc.gnu.org]

Author: jasonwucj
Date: Fri Jan 16 06:20:22 2015
New Revision: 219711

URL: https://gcc.gnu.org/viewcvs?rev=219711&root=gcc&view=rev
Log:
[NDS32] Have shirnk-wrapping optimization to be performed on nds32 target.

gcc/
	* config/nds32/nds32-protos.h (nds32_can_use_return_insn): New.
	* config/nds32/nds32.md (unspec_volatile_func_return): Remove.
	(return_internal): New.
	(return): Define this named pattern.
	(simple_return): Define this named pattern.
	* config/nds32/nds32.c (nds32_expand_epilogue): Emit return_internal
	pattern instead of unspec_volatile_func_return.
	(nds32_expand_epilogue_v3pop): Likewise.
	(nds32_can_use_return_insn): New function.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/nds32/nds32-protos.h
    trunk/gcc/config/nds32/nds32.c
    trunk/gcc/config/nds32/nds32.md