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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).
- [Qemu-devel] [PATCH 0/5] tcg-sparc improvements, Richard Henderson, 2010/01/11
- [Qemu-devel] [PATCH 2/5] tcg-sparc: Implement add2, sub2, mulu2., Richard Henderson, 2010/01/11
- [Qemu-devel] [PATCH 1/5] tcg-sparc: Add tcg_out_arithc., Richard Henderson, 2010/01/11
- [Qemu-devel] [PATCH 3/5] tcg-sparc: Do not remove %o[012] from 'r' constraint., Richard Henderson, 2010/01/11
- [Qemu-devel] [PATCH 4/5] tcg-sparc: Implement division properly., Richard Henderson, 2010/01/11
- [Qemu-devel] [PATCH 5/5] tcg-sparc: Implement ext32[su]_i64, Richard Henderson, 2010/01/11
- Re: [Qemu-devel] [PATCH 0/5] tcg-sparc improvements, Palle Lyckegaard, 2010/01/11
- [Qemu-devel] Re: [PATCH 0/5] tcg-sparc improvements,
Blue Swirl <=