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[Qemu-devel] Re: [PATCH 0/5] tcg-sparc improvements


From: Blue Swirl
Subject: [Qemu-devel] Re: [PATCH 0/5] tcg-sparc improvements
Date: Tue, 12 Jan 2010 20:02:52 +0000

On Mon, Jan 11, 2010 at 7:22 PM, Richard Henderson <address@hidden> wrote:
> As noticed elsewhere on the list mulu2_i32 is missing.  Which led
> me to notice that add2_i32 and sub2_i32 were also missing and also
> led me to notice that division was incorrectly implemented.
>
> My initial implementation of 32-bit division copied the existing practice
> of using the 64-bit division insns for sparcv9, with proper sign/zero
> extensions on the input operands.  But that required extra temporaries
> and quickly got ugly.  In the end I thought it was clearer to simply use
> the 32-bit division insns unconditionally.
>
> That excercise, however, made me notice that 32-bit extension was not
> special-cased, leading to the final patch.

Thanks, applied all (4/5 with your fix).




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