From: Richard Henderson <rth@twiddle.net>
To: Aurelien Jarno <aurelien@aurel32.net>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 08/14] target-mips: implement unaligned loads using TCG
Date: Wed, 10 Oct 2012 13:28:54 -0700 [thread overview]
Message-ID: <5075DA86.5030305@twiddle.net> (raw)
In-Reply-To: <1349814458-21739-9-git-send-email-aurelien@aurel32.net>
On 10/09/2012 01:27 PM, Aurelien Jarno wrote:
> Load/store from helpers should be avoided as they are quite
> inefficient. Rewrite unaligned loads instructions using TCG and
> aligned loads. The number of actual loads operations to implement
> an unaligned load instruction is reduced from up to 8 to 1.
>
> Note: As we can't rely on shift by 32 or 64 undefined behaviour,
> the code loads already shift by one constants.
>
> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
r~
next prev parent reply other threads:[~2012-10-10 20:28 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-09 20:27 [Qemu-devel] [PATCH 00/14] target-mips: misc fixes and optimizations Aurelien Jarno
2012-10-09 20:27 ` [Qemu-devel] [PATCH 01/14] softfloat: implement fused multiply-add NaN propagation for MIPS Aurelien Jarno
2012-10-09 20:27 ` [Qemu-devel] [PATCH 02/14] target-mips: use the softfloat floatXX_muladd functions Aurelien Jarno
2012-10-10 19:58 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 03/14] target-mips: fix FPU exceptions Aurelien Jarno
2012-10-10 20:05 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 04/14] target-mips: use softfloat constants when possible Aurelien Jarno
2012-10-10 20:09 ` Richard Henderson
2012-10-16 23:26 ` Aurelien Jarno
2012-10-09 20:27 ` [Qemu-devel] [PATCH 05/14] target-mips: cleanup load/store operations Aurelien Jarno
2012-10-10 20:10 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 06/14] target-mips: optimize load operations Aurelien Jarno
2012-10-10 20:11 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 07/14] target-mips: simplify load/store microMIPS helpers Aurelien Jarno
2012-10-10 20:15 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 08/14] target-mips: implement unaligned loads using TCG Aurelien Jarno
2012-10-10 20:28 ` Richard Henderson [this message]
2012-10-09 20:27 ` [Qemu-devel] [PATCH 09/14] target-mips: don't use local temps for store conditional Aurelien Jarno
2012-10-10 20:31 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 10/14] target-mips: implement movn/movz using movcond Aurelien Jarno
2012-10-10 20:33 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 11/14] target-mips: optimize ddiv/ddivu/div/divu with movcond Aurelien Jarno
2012-10-10 20:38 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 12/14] target-mips: use deposit instead of hardcoded version Aurelien Jarno
2012-10-10 20:43 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 13/14] target-mips: fix TLBR wrt SEGMask Aurelien Jarno
2012-10-10 20:44 ` Richard Henderson
2012-10-09 20:27 ` [Qemu-devel] [PATCH 14/14] target-mips: don't flush extra TLB on permissions upgrade Aurelien Jarno
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