REX_W 861 third_party/mach_override/libudis86/decode.c if ( REX_W( u->pfx_rex ) ) { REX_W 998 third_party/mach_override/libudis86/decode.c idx = eff_opr_mode(u->dis_mode, REX_W(u->pfx_rex), u->pfx_opr) / 32;