From: Richard Henderson <rth@twiddle.net>
To: Aurelien Jarno <aurelien@aurel32.net>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 2/9] tcg/optimizer: check types in copy propagation
Date: Thu, 20 Sep 2012 07:00:37 -0700 [thread overview]
Message-ID: <505B2185.2080207@twiddle.net> (raw)
In-Reply-To: <20120920055424.GB4164@ohm.aurel32.net>
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~
next prev parent reply other threads:[~2012-09-20 14:00 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-19 20:00 [Qemu-devel] [PATCH 0/9] tcg/optimize: rework copy propagation Aurelien Jarno
2012-09-19 20:00 ` [Qemu-devel] [PATCH 1/9] tcg/optimizer: remove TCG_TEMP_ANY Aurelien Jarno
2012-09-19 21:25 ` Richard Henderson
2012-09-19 20:00 ` [Qemu-devel] [PATCH 2/9] tcg/optimizer: check types in copy propagation Aurelien Jarno
2012-09-19 21:33 ` Richard Henderson
2012-09-20 5:54 ` Aurelien Jarno
2012-09-20 14:00 ` Richard Henderson [this message]
2012-09-19 20:00 ` [Qemu-devel] [PATCH 3/9] tcg/optimizer: rework copy progagation Aurelien Jarno
2012-09-19 21:41 ` Richard Henderson
2012-09-19 20:00 ` [Qemu-devel] [PATCH 4/9] tcg/optimize: do copy propagation for all operations Aurelien Jarno
2012-09-19 21:43 ` Richard Henderson
2012-09-19 20:00 ` [Qemu-devel] [PATCH 5/9] tcg/optimize: optimize "op r, a, a => mov r, a" Aurelien Jarno
2012-09-19 21:43 ` Richard Henderson
2012-09-19 20:00 ` [Qemu-devel] [PATCH 6/9] tcg/optimize: optimize "op r, a, a => movi r, 0" Aurelien Jarno
2012-09-19 21:46 ` Richard Henderson
2012-09-19 20:00 ` [Qemu-devel] [PATCH 7/9] tcg/optimize: further optimize brcond/setcond Aurelien Jarno
2012-09-19 21:48 ` Richard Henderson
2012-09-19 20:00 ` [Qemu-devel] [PATCH 8/9] tcg/optimize: prefer the "op a, a, b" form for commutative ops Aurelien Jarno
2012-09-19 21:49 ` Richard Henderson
2012-09-19 20:00 ` [Qemu-devel] [PATCH 9/9] tcg: remove #ifdef #endif around TCGOpcode tests Aurelien Jarno
2012-09-19 21:50 ` Richard Henderson
2012-09-21 12:36 ` [Qemu-devel] [PATCH 0/9] tcg/optimize: rework copy propagation Laurent Desnogues
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