No, vld/vst can't guaranteed to be atomic in this condition. Seems we
can't implement this on LoongArch for now.
On 2023/7/5 20:57, Xi Ruoyao wrote:
A question: is vld/vst guaranteed to be atomic if the accessed address
is aligned? If true we can use them to implement lock-free 128-bit
atomic
A question: is vld/vst guaranteed to be atomic if the accessed address
is aligned? If true we can use them to implement lock-free 128-bit
atomic load and store. See https://gcc.gnu.org/bugzilla/PR104688 for
the background, and some people really hate using a lock for atomics.
On Fri, 2023-06-30
On Fri, 2023-06-30 at 10:16 +0800, Chenghui Pan wrote:
> These patches add the Loongson SX/ASX instruction support to the
> LoongArch
> target, and can be utilized by using the new "-mlsx" and
> "-mlasx" option.
>
> Patches are bootstrapped and tested on loongarch64-linux-gnu target.
>
> Lulu
These patches add the Loongson SX/ASX instruction support to the LoongArch
target, and can be utilized by using the new "-mlsx" and
"-mlasx" option.
Patches are bootstrapped and tested on loongarch64-linux-gnu target.
Lulu Cheng (6):
LoongArch: Added Loongson SX vector directive compilation
