[Bug rtl-optimization/125727] [16/17 Regression] ICE on valid code at -O{s,2,3} with "-fno-tree-forwprop -fno-tree-pre -fno-tree-vrp -fno-tree-dce" on x86_64-linux-gnu: in simplify_subreg, at simplify-rtx.cc:8465 since r16-7261

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125727

--- Comment #4 from Jeffrey A. Law <law at gcc dot gnu.org> ---
So the combine change just makes it more likely that we try 4 insn
combinations.  So I suspect it's just exposing a problem elsewhere.