[Bug middle-end/111863] [14 Regression] Wrong code with "-O3 -fno-tree-ccp -fno-tree-dominator-opts -fno-tree-vrp" since r14-1600

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111863

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 56141
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56141&action=edit
untested fix

This fixes the reuse of arg0 so we don't change it for the later on code.