https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84710
--- Comment #7 from Zdenek Sojka <zsojka at seznam dot cz> --- Created attachment 43573 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43573&action=edit original testcase Unreduced testcase; needs additional -fkeep-inline-functions: $ aarch64-unknown-linux-gnu-gcc -O -fno-forward-propagate -fkeep-inline-functions xxx.c -w during RTL pass: combine xxx.c: In function 'bar2': xxx.c:81:1: internal compiler error: RTL check: expected code 'reg', have 'subreg' in rhs_regno, at rtl.h:1896 } ...