ARM v8.4 extensions include support for new floating point
multiplication variant instructions to the AArch64 SIMD
instructions set. Let the userspace know about it via a
HWCAP bit and MRS emulation.
Cc: Suzuki K Poulose
Signed-off-by: Dongjiu Geng
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My platform supports this feature, so I nee
On Sat, Dec 09, 2017 at 03:28:42PM +, Dongjiu Geng wrote:
> ARM v8.4 extensions include support for new floating point
> multiplication variant instructions to the AArch64 SIMD
Do we have any human-readable description of what the new instructions
do?
Since the v8.4 spec itself only describes
On 2017/12/11 19:59, Dave P Martin wrote:
> On Sat, Dec 09, 2017 at 03:28:42PM +, Dongjiu Geng wrote:
>> ARM v8.4 extensions include support for new floating point
>> multiplication variant instructions to the AArch64 SIMD
>
> Do we have any human-readable description of what the new instruct
On Mon, Dec 11, 2017 at 08:47:00PM +0800, gengdongjiu wrote:
>
> On 2017/12/11 19:59, Dave P Martin wrote:
> > On Sat, Dec 09, 2017 at 03:28:42PM +, Dongjiu Geng wrote:
> >> ARM v8.4 extensions include support for new floating point
> >> multiplication variant instructions to the AArch64 SIMD
Hi gengdongjiu
Sorry for the late response. I have a similar patch to add the support
for "FHM", which I was about to post it this week.
On 11/12/17 13:29, Dave Martin wrote:
On Mon, Dec 11, 2017 at 08:47:00PM +0800, gengdongjiu wrote:
On 2017/12/11 19:59, Dave P Martin wrote:
On Sat, Dec
On 2017/12/11 21:29, Dave Martin wrote:
>> Thanks for the point out.
>> In fact, this feature only adds two instructions:
>> FP16 * FP16 + FP32
>> FP16 * FP16 - FP32
>>
>> The spec call this bit to ID_AA64ISAR0_EL1.FHM, I do not know why it
>> will call "FHM", I think call it "FMLXL" may be bette
On 2017/12/12 2:58, Suzuki K Poulose wrote:
> Hi gengdongjiu
>
> Sorry for the late response. I have a similar patch to add the support for
> "FHM", which I was about to post it this week.
Suzuki, you are welcome.
May be you can not post again to avoid the duplicate review, thanks!
>
> On 11/12
