es natively in XMM registers, we should keep it there as much
as possible, and even if the sequences look complicated at the first
sight, they win in all cases.
So, the patch is OK.
Thanks,
Uros.
> Please let me know what you think.
> Roger
> --
>
> -Original Message-
>
ode size win with -Os
(ashl_8 is currently 39 bytes, shrinks to 5 bytes with this patch).
Please let me know what you think.
Roger
--
-Original Message-
From: Uros Bizjak
Sent: 25 October 2021 09:02
To: Roger Sayle
Cc: GCC Patches
Subject: Re: [PATCH] x86_64: Implement V1TI mode shifts/r
On Sun, Oct 24, 2021 at 6:34 PM Roger Sayle wrote:
>
>
> This patch provides RTL expanders to implement logical shifts and
> rotates of 128-bit values (stored in vector integer registers) by
> constant bit counts. Previously, GCC would transfer these values
> to a pair of scalar registers (TImode
This patch provides RTL expanders to implement logical shifts and
rotates of 128-bit values (stored in vector integer registers) by
constant bit counts. Previously, GCC would transfer these values
to a pair of scalar registers (TImode) via memory to perform the
operation, then transfer the result
