* why aarch64 doesn't support V4QI.
@ 2020-12-15 14:26 172060045
2020-12-18 22:16 ` Richard Earnshaw
0 siblings, 1 reply; 2+ messages in thread
From: 172060045 @ 2020-12-15 14:26 UTC (permalink / raw)
To: gcc
Hi,
I have some problems in gcc development about aarch64. I saw it doesn't support
V4QI machine mode in aarch64-modes.def, but it has V4QI in arm-modes.def.
I want to know why it doesn't?
I am looking forward your replies. Thanks for your help.
Best regards,
yancheng
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: why aarch64 doesn't support V4QI.
2020-12-15 14:26 why aarch64 doesn't support V4QI 172060045
@ 2020-12-18 22:16 ` Richard Earnshaw
0 siblings, 0 replies; 2+ messages in thread
From: Richard Earnshaw @ 2020-12-18 22:16 UTC (permalink / raw)
To: 172060045, gcc
On 15/12/2020 14:26, 172060045@hdu.edu.cn wrote:
> Hi,
>
> I have some problems in gcc development about aarch64. I saw it doesn't support
> V4QI machine mode in aarch64-modes.def, but it has V4QI in arm-modes.def.
>
> I want to know why it doesn't?
>
> I am looking forward your replies. Thanks for your help.
>
> Best regards,
> yancheng
>
v4qi was used on arm for supporting the Intel XScale wireless-mmx
extensions. But that doesn't exist in AArch64.
R.
^ permalink raw reply [flat|nested] 2+ messages in thread
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