[Bug target/125746] [16/17 Regression] ICE in gen_rtx_SUBREG, at emit-rtl.cc:1043 since r16-718

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125746

--- Comment #1 from Dimitar Dimitrov <dimitar at gcc dot gnu.org> ---
I think that decode_reg_name_and_count() should be fixed to start validating
that the ASM register is a valid hardware one. I'll try to implement a fix.