[Bug middle-end/120372] canonicalize_comparison uses gen_move_insn to calcualate the cost of the constant formation

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120372

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Patch posted:
https://gcc.gnu.org/pipermail/gcc-patches/2025-May/684328.html
https://gcc.gnu.org/pipermail/gcc-patches/2025-May/684329.html

(with extra comments added compared to the patch attached here and split into
2).