https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124760
--- Comment #6 from Peter Bergner <bergner at gcc dot gnu.org> --- (In reply to Jeffrey A. Law from comment #5) > For that code sh1add would be wrong on rv64. Think about bits 32..63. > Those must be a copy of bit 31 for ABI semantics -- which won't be the case > if we used shNadd. > > Try it with a "long" rather than an "int" :-) AH, so the addiw for the sequence that is ok, does the sign-extend for us. Ok, I'm still learning the riscv ISA. Thanks for the education!
