On Mon, 28 Mar 2022 07:43:29 GMT, Jie Fu wrote:
>> Xiaohong Gong has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Add a superclass for vector negation
>
> src/hotspot/share/opto/vectornode.cpp line 1592:
>
>> 1590:
>> 1591: // Generate
On Tue, 22 Mar 2022 09:58:23 GMT, Xiaohong Gong wrote:
>> The current vector `"NEG"` is implemented with substraction a vector by zero
>> in case the architecture does not support the negation instruction. And to
>> fit the predicate feature for architectures that support it, the masked
>>
On Mon, 28 Mar 2022 07:40:48 GMT, Jie Fu wrote:
>> The compiler can get the real type info from `Op_NegVI` that can also handle
>> the `BYTE ` and `SHORT ` basic type. I just don't want to add more new IRs
>> which also need more match rules in the ad files.
>>
>>> Is there any performance
On Mon, 21 Mar 2022 01:19:57 GMT, Xiaohong Gong wrote:
> The compiler can get the real type info from `Op_NegVI` that can also handle
> the `BYTE ` and `SHORT ` basic type. I just don't want to add more new IRs
> which also need more match rules in the ad files.
>
> > Is there any performance
On Tue, 22 Mar 2022 09:58:23 GMT, Xiaohong Gong wrote:
>> The current vector `"NEG"` is implemented with substraction a vector by zero
>> in case the architecture does not support the negation instruction. And to
>> fit the predicate feature for architectures that support it, the masked
>>
> The current vector `"NEG"` is implemented with substraction a vector by zero
> in case the architecture does not support the negation instruction. And to
> fit the predicate feature for architectures that support it, the masked
> vector `"NEG" ` is implemented with pattern `"v.not(m).add(1,
