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Re: [Qemu-devel] [PATCH 4/4] target-arm: neon fix
From: |
Laurent Desnogues |
Subject: |
Re: [Qemu-devel] [PATCH 4/4] target-arm: neon fix |
Date: |
Mon, 8 Feb 2010 17:05:46 +0100 |
On Mon, Feb 8, 2010 at 12:47 PM, Riku Voipio <address@hidden> wrote:
> On Sun, Feb 07, 2010 at 02:02:31PM +0100, Laurent Desnogues wrote:
>> On Sun, Feb 7, 2010 at 1:54 PM, Laurent Desnogues
>> <address@hidden> wrote:
>> > On Fri, Feb 5, 2010 at 4:52 PM, Riku Voipio <address@hidden> wrote:
>> >> From: Juha Riihimäki <address@hidden>
>
>> >> add an extra check in "two registers and a shift" to ensure element
>> >> size decoding logic cannot fail.
>
>> > I think there's a patch ordering problem that makes
>> > the comment and the change not agree :-)
>
> Sorry, apparently messed up while rebasing.
>
>> BTW I don't think adding the check for size is needed
>> here. The encoding at that point looks like this:
>
>> 3322222222221111111111
>> 10987654321098765432109876543210
>> 1111001_1___1______________1____
>> 1111001_1__1_______________1____
>> 1111001_1_1________________1____
>
>> so it will stop for size == 0 given that bit 19 will have to
>> be set.
>
> Juha agrees so we'll drop this patch (or more precisely get the actual change
> out of the previous patch..)
Do you intend to resend the patch 3 of this set or should it
be reviewed as is?
Thanks,
Laurent
[Qemu-devel] [PATCH 1/4] target-arm: neon - fix VRADDHN/VRSUBHN vs VADDHN/VSUBHN, Riku Voipio, 2010/02/05
[Qemu-devel] [PATCH 2/4] target-arm: neon vshll instruction fix, Riku Voipio, 2010/02/05
[Qemu-devel] [PATCH 3/4] target-arm: neon emulation enhancements, Riku Voipio, 2010/02/05