r184461 - in /trunk/gcc: ChangeLog config/avr/a...

[gjl@gcc.gnu.org]

Author: gjl
Date: Wed Feb 22 09:25:35 2012
New Revision: 184461

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184461
Log:
	PR rtl-optimization/50063
	* config/avr/avr.md (movhi_sp_r): Handle -1 (unknown IRQ state)
	and 2 (8-bit SP) in operand 2.
	* config/avr/avr.c (avr_prologue_setup_frame): Adjust prologue
	setup to use movhi_sp_r instead of vanilla move to write SP.
	Adjust REG_CFA notes to superseed unspec.
	(expand_epilogue): Adjust epilogue setup to use movhi_sp_r instead
	of vanilla move.
	As function body might contain CLI or SEI: Use irq_state 0 (IRQ
	known to be off) only with TARGET_NO_INTERRUPTS. Never use
	irq_state 1 (IRQ known to be on) here.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr.c
    trunk/gcc/config/avr/avr.md