[Bug tree-optimization/80155] [7 regression] Performance regression with code hoisting enabled

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80155

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 41031
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41031&action=edit
second patch candidate

Second candidate, instead of inhibiting PHI insertions this limits use of them
during elimination.  This should allow existing 2nd level opportunities to
continue to be handled.