[Bug tree-optimization/99395] s116 benchmark of TSVC is vectorized by clang and not by gcc

[juzhe.zhong at rivai dot ai via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99395

--- Comment #8 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
Hi, Richard.

Now, I find the time to GCC vectorization optimization.

I find this case:

  _2 = a[_1];
  ...
  a[i_16] = _4;
  ,,,
  _7 = a[_1];    ---> This load should be eliminated and re-use _2.

Am I right ?

Could you guide me which pass should do this CSE optimization ?

Thanks.