[Bug rtl-optimization/121852] [13/14/15/16 regression] wrong code at -O2 with "-fno-gcse" on x86_64-linux-gnu

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121852

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or better not to trust REG_UNUSED notes for !df either?