From: Richard Henderson <rth@twiddle.net>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-devel@nongnu.org, Aurelien Jarno <aurelien@aurel32.net>,
Alexander Graf <agraf@suse.de>
Subject: Re: [Qemu-devel] [PATCH 0/7] Define "deposit" tcg operation
Date: Fri, 07 Jan 2011 15:37:47 -0800 [thread overview]
Message-ID: <4D27A3CB.4050900@twiddle.net> (raw)
In-Reply-To: <AANLkTi=s6c83B6v+rS-H_8J-B2xqyq_BUo3Qnzv_-swP@mail.gmail.com>
On 01/07/2011 03:10 PM, Peter Maydell wrote:
> Unless I've missed something, deposit_i32 is basically the same
> as the ARM BFI instruction, so for ARM we could use deposit_i32 in
> the implementation of BFI (and conversely implement deposit_i32
> using BFI when we're generating for an ARMv6T2 or better host.)
That's correct.
I'll admit to not knowing the arm/thumb variants very well. While
I can see that gcc sometimes implements its similar "insv" operation
with BFC and BFI, knowing under what conditions those are available
is ... slightly complex to say the least.
r~
prev parent reply other threads:[~2011-01-07 23:38 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-07 22:42 [Qemu-devel] [PATCH 0/7] Define "deposit" tcg operation Richard Henderson
2011-01-07 22:42 ` [Qemu-devel] [PATCH 1/7] tcg: Define "deposit" as an optional operation Richard Henderson
2011-01-07 23:48 ` Stuart Brady
2011-01-09 21:38 ` Aurelien Jarno
2011-01-09 22:45 ` Richard Henderson
2011-01-07 22:42 ` [Qemu-devel] [PATCH 2/7] tcg-ppc: Implement deposit operation Richard Henderson
2011-01-07 23:33 ` [Qemu-devel] " malc
2011-01-07 22:42 ` [Qemu-devel] [PATCH 3/7] tcg-hppa: " Richard Henderson
2011-01-07 23:35 ` Stuart Brady
2011-01-07 23:41 ` Richard Henderson
2011-01-07 22:43 ` [Qemu-devel] [PATCH 4/7] tcg-ia64: " Richard Henderson
2011-01-09 22:04 ` [Qemu-devel] " Aurelien Jarno
2011-01-07 22:43 ` [Qemu-devel] [PATCH 5/7] tcg-i386: " Richard Henderson
2011-01-09 21:53 ` [Qemu-devel] " Aurelien Jarno
2011-01-09 22:55 ` Richard Henderson
2011-01-10 0:16 ` Aurelien Jarno
2011-01-10 0:43 ` Richard Henderson
2011-01-10 16:52 ` Aurelien Jarno
2011-01-10 18:37 ` Aurelien Jarno
2011-01-10 19:19 ` Richard Henderson
2011-01-07 22:43 ` [Qemu-devel] [PATCH 6/7] target-i386: Use " Richard Henderson
2011-01-07 22:43 ` [Qemu-devel] [PATCH 7/7] target-ppc: " Richard Henderson
2011-01-07 23:10 ` [Qemu-devel] [PATCH 0/7] Define "deposit" tcg operation Peter Maydell
2011-01-07 23:37 ` Richard Henderson [this message]
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