https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92903
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |TREE --- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- So for x86 since GCC 9, we are able to optimize it at the RTL level as combine added 2->2 instruction combining. Still need to be done at the tree level.