From: Richard Henderson <rth@twiddle.net>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "Patch Tracking" <patches@linaro.org>,
"Michael Matz" <matz@suse.de>, "Alexander Graf" <agraf@suse.de>,
"QEMU Developers" <qemu-devel@nongnu.org>,
"Claudio Fontana" <claudio.fontana@linaro.org>,
"Dirk Mueller" <dmueller@suse.de>,
"Will Newton" <will.newton@linaro.org>,
"Laurent Desnogues" <laurent.desnogues@gmail.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
"Christoffer Dall" <christoffer.dall@linaro.org>
Subject: Re: [Qemu-devel] [PATCH 02/10] target-arm: A64: Fix vector register access on bigendian hosts
Date: Mon, 30 Dec 2013 07:35:00 -0800 [thread overview]
Message-ID: <52C192A4.7050708@twiddle.net> (raw)
In-Reply-To: <CAFEAcA_SmJkX5O4Z5Ga+wHyJmAsoF6NXw1tRbp-u4595r_DbHQ@mail.gmail.com>
On 12/30/2013 07:28 AM, Peter Maydell wrote:
> Yeah, we could do that. Will the optimiser optimise away the unnecessary
> extra load of the unused high 32 bits for the "32 bit or smaller" case on
> a 32 bit host CPU?
It should.
We do transform qemu_st_i64 to qemu_st_i32 as appropriate for 32-bit hosts,
making the high part of the tcg ld_i64 dead.
r~
next prev parent reply other threads:[~2013-12-30 15:35 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-28 21:49 [Qemu-devel] [PATCH 00/10] A64 decoder patchset 5: most floating point Peter Maydell
2013-12-28 21:49 ` [Qemu-devel] [PATCH 01/10] target-arm: A64: Add support for dumping AArch64 VFP register state Peter Maydell
2013-12-30 14:58 ` Richard Henderson
2013-12-30 15:21 ` Peter Maydell
2013-12-28 21:49 ` [Qemu-devel] [PATCH 02/10] target-arm: A64: Fix vector register access on bigendian hosts Peter Maydell
2013-12-30 15:03 ` Richard Henderson
2013-12-30 15:28 ` Peter Maydell
2013-12-30 15:35 ` Richard Henderson [this message]
2013-12-28 21:49 ` [Qemu-devel] [PATCH 03/10] target-arm: Use VFP_BINOP macro for min, max, minnum, maxnum Peter Maydell
2013-12-30 15:04 ` Richard Henderson
2013-12-28 21:49 ` [Qemu-devel] [PATCH 04/10] target-arm: A64: Add "Floating-point data-processing (2 source)" insns Peter Maydell
2013-12-30 15:10 ` Richard Henderson
2013-12-28 21:49 ` [Qemu-devel] [PATCH 05/10] target-arm: A64: Add "Floating-point data-processing (3 " Peter Maydell
2013-12-30 15:15 ` Richard Henderson
2013-12-30 15:17 ` Richard Henderson
2013-12-28 21:49 ` [Qemu-devel] [PATCH 06/10] target-arm: A64: Add fmov (scalar, immediate) instruction Peter Maydell
2013-12-30 15:21 ` Richard Henderson
2013-12-28 21:49 ` [Qemu-devel] [PATCH 07/10] target-arm: A64: Add support for floating point compare Peter Maydell
2013-12-30 15:25 ` Richard Henderson
2013-12-28 21:49 ` [Qemu-devel] [PATCH 08/10] target-arm: A64: Add support for floating point conditional compare Peter Maydell
2013-12-30 15:27 ` Richard Henderson
2013-12-28 21:49 ` [Qemu-devel] [PATCH 09/10] target-arm: A64: Add support for floating point cond select Peter Maydell
2013-12-30 15:28 ` Richard Henderson
2013-12-28 21:49 ` [Qemu-devel] [PATCH 10/10] target-arm: Give the FPSCR rounding modes names Peter Maydell
2013-12-30 15:29 ` Richard Henderson
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