[Bug target/96342] [SVE] Add support for "omp declare simd"

[yangyang305 at huawei dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96342

--- Comment #5 from yangyang <yangyang305 at huawei dot com> ---
Created attachment 49414
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49414&action=edit
part2-patch