[Bug target/115881] [15 Regression] ICE: RTL check: expected code 'reg', have 'subreg' in rhs_regno, at rtl.h:1934 with -O2 -mx32 -maddress-mode=long

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115881

--- Comment #7 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
Started from r15-1945-g9d20529d94b232. https://gcc.gnu.org/PR115991#c10 also
has an `x86_64 -m64 -O2` example extracted from ICE during `linux-6.10` kernel
build.