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From: Max Filippov <jcmvbkbc@gmail.com>
To: Richard Henderson <rth@twiddle.net>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 21/26] target-xtensa: implement unaligned exception option
Date: Tue, 24 May 2011 03:20:35 +0400	[thread overview]
Message-ID: <201105240320.36147.jcmvbkbc@gmail.com> (raw)
In-Reply-To: <4DDA664E.108@twiddle.net>

> > This is also done by gen_load_store_alignment.
> > Does it really worth copying part of this logic to do_unaligned_access just to use ALIGNED_ONLY framework?
> 
> Yes, because it is done out-of-line, as a part of the TLB load slow path.

I probably just don't get what you call 'out-of-line'. In fact do_unaligned_access will be called for every unaligned access, and alignment condition will be checked for every access. It just happens in other place.
Does it have more chances to be optimized better than TCG code, or is it less TCG code itself that makes difference?

Thanks.
-- Max

  reply	other threads:[~2011-05-23 23:20 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-17 22:32 [Qemu-devel] [PATCH 00/26] target-xtensa: introduce new target architecture Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 01/26] target-xtensa: add target stubs Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 02/26] target-xtensa: add target to the configure script Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 03/26] target-xtensa: implement disas_xtensa_insn Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 04/26] target-xtensa: implement narrow instructions Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 05/26] target-xtensa: implement RT0 group Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 06/26] target-xtensa: add sample board Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 07/26] target-xtensa: implement conditional jumps Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 08/26] target-xtensa: implement JX/RET0/CALLX Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 09/26] target-xtensa: add special and user registers Max Filippov
2011-05-19 20:59   ` Richard Henderson
2011-05-20  7:34     ` Max Filippov
2011-05-20 14:18       ` Richard Henderson
2011-05-17 22:32 ` [Qemu-devel] [PATCH 10/26] target-xtensa: implement RST3 group Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 11/26] target-xtensa: implement shifts (ST1 and RST1 groups) Max Filippov
2011-05-19 21:15   ` Richard Henderson
2011-05-17 22:32 ` [Qemu-devel] [PATCH 12/26] target-xtensa: implement LSAI group Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 13/26] target-xtensa: mark reserved and TBD opcodes Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 14/26] target-xtensa: implement SYNC group Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 15/26] target-xtensa: implement CACHE group Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 16/26] target-xtensa: implement exceptions Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 17/26] target-xtensa: implement RST2 group (32 bit mul/div/rem) Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 18/26] target-xtensa: implement windowed registers Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 19/26] target-xtensa: implement loop option Max Filippov
2011-05-19 21:51   ` Richard Henderson
2011-05-20  7:25     ` Max Filippov
2011-05-20  9:10       ` Max Filippov
2011-05-20 14:14         ` Richard Henderson
2011-05-17 22:32 ` [Qemu-devel] [PATCH 20/26] target-xtensa: implement extended L32R Max Filippov
2011-05-19 22:00   ` Richard Henderson
2011-05-20  7:14     ` Max Filippov
2011-05-20 15:30       ` Richard Henderson
2011-05-17 22:32 ` [Qemu-devel] [PATCH 21/26] target-xtensa: implement unaligned exception option Max Filippov
2011-05-19 22:04   ` Richard Henderson
2011-05-22 12:10     ` Max Filippov
2011-05-22 16:57       ` Richard Henderson
2011-05-22 20:12         ` Max Filippov
2011-05-23 13:51           ` Richard Henderson
2011-05-23 23:20             ` Max Filippov [this message]
2011-05-24 14:57               ` Richard Henderson
2011-05-17 22:32 ` [Qemu-devel] [PATCH 22/26] target-xtensa: implement SIMCALL Max Filippov
2011-05-19 22:07   ` Richard Henderson
2011-05-17 22:32 ` [Qemu-devel] [PATCH 23/26] target-xtensa: implement interrupt option Max Filippov
2011-05-20 15:44   ` Richard Henderson
2011-05-20 20:05     ` Max Filippov
2011-05-20 20:49       ` Richard Henderson
2011-05-20 21:30         ` Max Filippov
2011-05-20 22:19           ` Richard Henderson
2011-05-24 10:28             ` Max Filippov
2011-05-24 14:59               ` Richard Henderson
2011-05-24 15:11                 ` Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 24/26] target-xtensa: implement accurate window check Max Filippov
2011-05-20 15:58   ` Richard Henderson
2011-05-20 19:04     ` Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 25/26] target-xtensa: implement CPENABLE and PRID SRs Max Filippov
2011-05-17 22:32 ` [Qemu-devel] [PATCH 26/26] target-xtensa: implement relocatable vectors Max Filippov

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