Il 21/12/2013 00:00, Richard Henderson ha scritto:
> + if (real_bswap && have_movbe) {
> + tcg_out_modrm_offset(s, OPC_MOVBE_GyMy + P_DATA16 + seg,
> + datalo, base, ofs);
> + tcg_out_ext16u(s, datalo, datalo);Do partial register stalls still exist on Atom and Haswell? I don't remember exactly what you had to do to prevent them, but IIRC you first moved zero to the register and then overwrote the the low 16 bits. Paolo
