From: Richard Henderson <richard.henderson@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>,
Richard Henderson <rth@twiddle.net>
Cc: Michael Roth <mdroth@linux.vnet.ibm.com>,
Paolo Bonzini <pbonzini@redhat.com>,
QEMU Developers <qemu-devel@nongnu.org>,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [PATCH] tcg/arm: Fix double-word comparisons
Date: Mon, 15 Jan 2018 08:46:26 -0800 [thread overview]
Message-ID: <ab082406-b0f9-8c82-93b6-53c38ac1d047@linaro.org> (raw)
In-Reply-To: <CAFEAcA8TxNTjvsqeHss=7BEm6SzwLHZ54UqDmOPMWA5z0oTsUA@mail.gmail.com>
On 01/15/2018 06:27 AM, Peter Maydell wrote:
> (may be worth mentioning
> in particular how "rIM" differs from "rINK" -- I think the answer is that
> we want to say "valid-immediate OR (valid-if-inverted AND valid-if-negated)",
> whereas 'rINK' is "valid-immediate OR valid-if-inverted OR valid-if-negated".)
I also just realized that N & K is only true for -256 thru -1. Which is
certainly a simpler test to go with that verbiage.
r~
next prev parent reply other threads:[~2018-01-15 16:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-10 5:39 [Qemu-devel] [PATCH] tcg/arm: Fix double-word comparisons Richard Henderson
2018-01-10 19:26 ` Michael Roth
2018-01-15 14:27 ` Peter Maydell
2018-01-15 16:18 ` Richard Henderson
2018-01-15 16:27 ` Peter Maydell
2018-01-15 16:46 ` Richard Henderson [this message]
2018-01-15 17:31 ` Richard Henderson
2018-01-15 17:39 ` Richard Henderson
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