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Re: [Qemu-devel] [PATCH 2/9] tcg/optimizer: check types in copy propagat
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [PATCH 2/9] tcg/optimizer: check types in copy propagation |
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Date: |
Thu, 20 Sep 2012 07:00:37 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120828 Thunderbird/15.0 |
On 09/19/2012 10:54 PM, Aurelien Jarno wrote:
> | mov_i32 r1,tmp6
> | movi_i64 tmp8,$0x20
> | shr_i64 tmp7,r1,tmp8
>
> Here, tmp7 is replaced by r1. However r1 only contains the 32-bit low
> part of tmp7, thus returning 0.
Ok. Thanks for getting that on the record.
r~
- Re: [Qemu-devel] [PATCH 6/9] tcg/optimize: optimize "op r, a, a => movi r, 0", (continued)
- [Qemu-devel] [PATCH 7/9] tcg/optimize: further optimize brcond/setcond, Aurelien Jarno, 2012/09/19
- [Qemu-devel] [PATCH 8/9] tcg/optimize: prefer the "op a, a, b" form for commutative ops, Aurelien Jarno, 2012/09/19
- [Qemu-devel] [PATCH 3/9] tcg/optimizer: rework copy progagation, Aurelien Jarno, 2012/09/19
- [Qemu-devel] [PATCH 5/9] tcg/optimize: optimize "op r, a, a => mov r, a", Aurelien Jarno, 2012/09/19
- Re: [Qemu-devel] [PATCH 0/9] tcg/optimize: rework copy propagation, Laurent Desnogues, 2012/09/21