Re: [Qemu-devel] [PATCH 10/21] tcg: Optimize some forms of deposit.

[Richard Henderson]

On 10/18/2011 01:30 PM, Blue Swirl wrote:
> On Tue, Oct 18, 2011 at 6:50 PM, Richard Henderson <address@hidden> wrote:
>> If the deposit replaces the entire word, optimize to a move.
>>
>> If we're inserting to the top of the word, avoid the mask of arg2
>> as we'll be shifting out all of the garbage and shifting in zeros.
>>
>> If the host is 32-bit, reduce a 64-bit deposit to a 32-bit deposit
>> when possible.
>>
>> Signed-off-by: Richard Henderson <address@hidden>
> 
> Nice patch, but why would it belong to this series?

Only because we start generating a lot of these special cases in this
series.  It's certainly otherwise independent.


r~