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Date: Fri, 31 Jan 2014 14:38:00 -0000
Message-ID: <CANtU079oJ6oPsQkjn7i4YWuXTcALVYe_WKvDYyMouXePbMOsQw@mail.gmail.com>
Subject: Re: [PATCH] PR gas/16488: Add test for incorrect memory operand for gather/scatter instructions.
From: Michael Zolotukhin <michael.v.zolotukhin@gmail.com>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: Jan Beulich <JBeulich@suse.com>, Binutils <binutils@sourceware.org>
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> You added 2 tests for AT&T syntax, but only 1 for
> Intel syntax.  Any particular reason for this?
Yes, the following test doesn't give an error:
      vgatherqpd zmm6{k1}, ZMMWORD PTR [zmm3]
I think it's because it is equivalent to something like vgatherqpd
(,%zmm2,),%zmm6{%k1} (please note commas around zmm2), which also
doesn't lead to an error.  I assume that in Intel syntax this test is
regarded as a rich addressing mode, which is acceptable for
gather/scatters. However, I'm not sure about this - please correct me
if I'm wrong.

Thanks,
Michael
> H.J.