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Re: [PATCH] x86/Intel: disassemble vcvt{,u}si2s{d,s} with correct operand order
- From: "Jan Beulich" <JBeulich at suse dot com>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: "Binutils" <binutils at sourceware dot org>
- Date: Thu, 23 Apr 2015 14:06:46 +0100
- Subject: Re: [PATCH] x86/Intel: disassemble vcvt{,u}si2s{d,s} with correct operand order
- Authentication-results: sourceware.org; auth=none
- References: <552FE0EA0200007800072CEE at mail dot emea dot novell dot com> <CAMe9rOqwpWN1FRnuUY4Ah=iCoYisiidHLp91LQaAxzHOPPpc9Q at mail dot gmail dot com>
>>> On 23.04.15 at 14:39, <hjl.tools@gmail.com> wrote:
> On Thu, Apr 16, 2015 at 7:18 AM, Jan Beulich <JBeulich@suse.com> wrote:
>> As pointed out before, the documentation mandates the rounding mode to
>> follow the GPR, so disassembler should produce output accordingly.
>>
>> gas/testsuite/
>> 2015-04-16 Jan Beulich <jbeulich@suse.com>
>>
>> * gas/i386/avx512f.s: Adjust operand order for Intel syntax
>> vcvt{,u}si2ss.
>> * gas/i386/x86-64-avx512f.s: Adjust operand order for Intel
>> syntax vcvt{,u}si2s{d,s}.
>>
>> opcodes/
>> 2015-04-16 Jan Beulich <jbeulich@suse.com>
>>
>> * i386-dis.c (print_insn): Swap rounding mode specifier and
>> general purpose register in Intel mode.
>
> I checked with our people. Intel Software Developer Manual only governs
> the output side of the binary form of instruction byte stream matches what
> HW expect. Each assembly tool product has its own implementation of
> transforming the input language/dialect into the output stream. In case of
> GNU assembler, operand order for AT&T and Intel syntax for AVX512 is
> the one used in AVX512 testcases.
>
> It is not OK.
Same here then as for the previous patch.
Jan