[Bug middle-end/114570] GCC doesn't perform good loop invariant code motion for very long vector operations.

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114570

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-04-03

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
There's no (gimple) invariant motion after vector operation lowering.  RTL
invariant motion should see this though but it might have a prohibiting cost
model (or doesn't handle [stack] memory?).

There's other reasons we want to move vector lowering earlier which might then
also catch invariant motion opportunities.