From mboxrd@z Thu Jan  1 00:00:00 1970
From: Will Deacon <will.deacon@arm.com>
Subject: Re: [PATCH 1/2] arm64: bpf: add 'store immediate' instruction
Date: Wed, 11 Nov 2015 12:12:56 +0000
Message-ID: <20151111121256.GI9562@arm.com>
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Cc: Yang Shi <yang.shi@linaro.org>,
	Alexei Starovoitov <ast@kernel.org>, daniel@iogearbox.net,
	Catalin Marinas <catalin.marinas@arm.com>,
	Xi Wang <xi.wang@gmail.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Network Development <netdev@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	linaro-kernel@lists.linaro.org
To: Z Lim <zlim.lnx@gmail.com>
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On Tue, Nov 10, 2015 at 06:45:39PM -0800, Z Lim wrote:
> On Tue, Nov 10, 2015 at 2:41 PM, Yang Shi <yang.shi@linaro.org> wrote:
> > aarch64 doesn't have native store immediate instruction, such operation
> 
> Actually, aarch64 does have "STR (immediate)". For arm64 JIT, we can
> consider using it as an optimization.

Yes, I'd definitely like to see that in preference to moving via a
temporary register.

Will