From: Richard Henderson <rth@twiddle.net>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 10/21] tcg: Optimize some forms of deposit.
Date: Tue, 18 Oct 2011 15:27:09 -0700 [thread overview]
Message-ID: <4E9DFD3D.4090707@twiddle.net> (raw)
In-Reply-To: <CAAu8pHvXefj4U7pb3A9FMLQJThDBGxhgPEKQhB46ZGd5K56N1w@mail.gmail.com>
On 10/18/2011 01:30 PM, Blue Swirl wrote:
> On Tue, Oct 18, 2011 at 6:50 PM, Richard Henderson <rth@twiddle.net> wrote:
>> If the deposit replaces the entire word, optimize to a move.
>>
>> If we're inserting to the top of the word, avoid the mask of arg2
>> as we'll be shifting out all of the garbage and shifting in zeros.
>>
>> If the host is 32-bit, reduce a 64-bit deposit to a 32-bit deposit
>> when possible.
>>
>> Signed-off-by: Richard Henderson <rth@twiddle.net>
>
> Nice patch, but why would it belong to this series?
Only because we start generating a lot of these special cases in this
series. It's certainly otherwise independent.
r~
next prev parent reply other threads:[~2011-10-18 22:27 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-18 18:50 [Qemu-devel] [PATCH 00/21] Sparc FPU/VIS improvements Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 01/21] target-sparc: Add accessors for single-precision fpr access Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 02/21] target-sparc: Mark fprs dirty in store accessor Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 03/21] target-sparc: Add accessors for double-precision fpr access Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 04/21] target-sparc: Pass float64 parameters instead of dt0/1 temporaries Richard Henderson
2011-10-18 20:04 ` Blue Swirl
2011-10-18 20:07 ` Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 05/21] target-sparc: Make VIS helpers const when possible Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 06/21] target-sparc: Extract common code for floating-point operations Richard Henderson
2011-10-18 20:24 ` Blue Swirl
2011-10-18 22:21 ` Richard Henderson
2011-10-23 11:34 ` Blue Swirl
2011-10-18 18:50 ` [Qemu-devel] [PATCH 07/21] target-sparc: Extract float128 move to a function Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 08/21] target-sparc: Undo cpu_fpr rename Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 09/21] target-sparc: Change fpr representation to doubles Richard Henderson
2011-10-18 20:28 ` Blue Swirl
2011-10-18 22:25 ` Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 10/21] tcg: Optimize some forms of deposit Richard Henderson
2011-10-18 20:30 ` Blue Swirl
2011-10-18 22:27 ` Richard Henderson [this message]
2011-10-18 18:50 ` [Qemu-devel] [PATCH 11/21] target-sparc: Do exceptions management fully inside the helpers Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 12/21] sparc-linux-user: Handle SIGILL Richard Henderson
2011-10-18 20:32 ` Blue Swirl
2011-10-18 22:27 ` Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 13/21] target-sparc: Implement PDIST Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 14/21] target-sparc: Implement fpack{16, 32, fix} Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 15/21] target-sparc: Implement EDGE* instructions Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 16/21] target-sparc: Implement ALIGNADDR* inline Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 17/21] target-sparc: Implement BMASK/BSHUFFLE Richard Henderson
2011-10-18 20:36 ` Blue Swirl
2011-10-18 18:50 ` [Qemu-devel] [PATCH 18/21] target-sparc: Tidy fpack32 Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 19/21] target-sparc: Implement FALIGNDATA inline Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 20/21] sparc-linux-user: Add some missing syscall numbers Richard Henderson
2011-10-18 18:50 ` [Qemu-devel] [PATCH 21/21] sparc-linux-user: Enable NPTL Richard Henderson
2011-10-18 19:50 ` [Qemu-devel] [PATCH 00/21] Sparc FPU/VIS improvements Blue Swirl
2011-10-18 20:03 ` Richard Henderson
2011-10-18 20:19 ` Blue Swirl
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