[Bug tree-optimization/123051] [16 Regression] 25-30% slowdown of 470.lbm on Zen5 since r16-5902-g1da0e5c1405e87

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123051

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org
   Last reconfirmed|                            |2025-12-08
             Status|UNCONFIRMED                 |ASSIGNED

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm.  A testcase for SLP widen_mult even/odd reduction chain?  ISTR lbm is all
double.  Will investigate.