2012/2/21 Richard Henderson <r...@redhat.com>:
> On 02/21/12 09:08, Georg-Johann Lay wrote:
>>       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 read_sp 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.
>
> The CFA bits in avr_prologue_setup_frame look good.
> I'll let Denis or Eric review the movhi_sp_r change.
>

Approved.

Denis.

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