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Re: [Qemu-devel] [PATCH 0/9] target/arm: Fixups for ARM_FEATURE_V8_FP16


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH 0/9] target/arm: Fixups for ARM_FEATURE_V8_FP16
Date: Thu, 10 May 2018 19:17:07 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0

On 04/27/2018 10:22 AM, Alex Bennée wrote:
> 
> Richard Henderson <address@hidden> writes:
> 
>> When running the gcc testsuite with current aarch64-linux-user,
>> the testsuite detects the presence of the fp16 extension and
>> enables lots of extra tests for builtins.
>>
>> Quite a few of these new tests fail because we missed implementing
>> some instructions.  We really should go back and verify that nothing
>> else is missing from this (rather large) extension.
> 
> So this set of instructions is generated from any ASL description that
> contains "half":

This still isn't all of them.  At least the insns from fmov_float_gen.html are
missing.  The four insns could be handled with

FMOV_H_general  A64_V sf:1 00 11110 11 100 11 o:1 000000 Rn:5 Rd:5

Peter had pointed out that I didn't handle sf=1 in fmov during review.


r~



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