| Message ID | 20210614083800.1166166-24-richard.henderson@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | tcg: bswap improvements | expand |
On Mon, 14 Jun 2021 at 09:48, Richard Henderson <richard.henderson@linaro.org> wrote: > > Use a break instead of an ifdefed else. > There's no need to move the values through s->T0. > Remove TCG_BSWAP_IZ and the preceding zero-extension. > > Cc: Paolo Bonzini <pbonzini@redhat.com> > Cc: Eduardo Habkost <ehabkost@redhat.com> > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> thanks -- PMM
diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c index e8a9dcd21a..b21873ed23 100644 --- a/target/i386/tcg/translate.c +++ b/target/i386/tcg/translate.c @@ -7195,17 +7195,11 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu) reg = (b & 7) | REX_B(s); #ifdef TARGET_X86_64 if (dflag == MO_64) { - gen_op_mov_v_reg(s, MO_64, s->T0, reg); - tcg_gen_bswap64_i64(s->T0, s->T0); - gen_op_mov_reg_v(s, MO_64, reg, s->T0); - } else -#endif - { - gen_op_mov_v_reg(s, MO_32, s->T0, reg); - tcg_gen_ext32u_tl(s->T0, s->T0); - tcg_gen_bswap32_tl(s->T0, s->T0, TCG_BSWAP_IZ | TCG_BSWAP_OZ); - gen_op_mov_reg_v(s, MO_32, reg, s->T0); + tcg_gen_bswap64_i64(cpu_regs[reg], cpu_regs[reg]); + break; } +#endif + tcg_gen_bswap32_tl(cpu_regs[reg], cpu_regs[reg], TCG_BSWAP_OZ); break; case 0xd6: /* salc */ if (CODE64(s))
Use a break instead of an ifdefed else. There's no need to move the values through s->T0. Remove TCG_BSWAP_IZ and the preceding zero-extension. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/i386/tcg/translate.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-)