On 3/17/20 8:06 AM, LIU Zhiwei wrote: > +static int64_t do_mulhsu_d(int64_t s2, uint64_t s1) > +{ > + uint64_t hi_64, lo_64, abs_s2 = s2; > + > + if (s2 < 0) { > + abs_s2 = -s2; > + } > + mulu64(&lo_64, &hi_64, abs_s2, s1); > + if (s2 < 0) { > + lo_64 = ~lo_64; > + hi_64 = ~hi_64; > + if (lo_64 == UINT64_MAX) { > + lo_64 = 0; > + hi_64 += 1; > + } else { > + lo_64 += 1; > + } > + } > + > + return hi_64; > +}
Missed the improvement here. See tcg_gen_mulsu2_i64. Otherwise, Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~