Richard Henderson <[email protected]> writes: > From: "Emilio G. Cota" <[email protected]> > > Instead of unconditionally exiting to the exec loop, use the > lookup_and_goto_ptr helper to jump to the target if it is valid. > > Perf impact: see next commit's log. > > Reviewed-by: Richard Henderson <[email protected]> > Signed-off-by: Emilio G. Cota <[email protected]> > Message-Id: <[email protected]> > Signed-off-by: Richard Henderson <[email protected]>
Reviewed-by: Alex Bennée <[email protected]> > --- > target/arm/translate.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/target/arm/translate.c b/target/arm/translate.c > index 0b5a0bc..facb52f 100644 > --- a/target/arm/translate.c > +++ b/target/arm/translate.c > @@ -4153,8 +4153,12 @@ static inline void gen_goto_tb(DisasContext *s, int n, > target_ulong dest) > gen_set_pc_im(s, dest); > tcg_gen_exit_tb((uintptr_t)s->tb + n); > } else { > + TCGv addr = tcg_temp_new(); > + > gen_set_pc_im(s, dest); > - tcg_gen_exit_tb(0); > + tcg_gen_extu_i32_tl(addr, cpu_R[15]); > + tcg_gen_lookup_and_goto_ptr(addr); > + tcg_temp_free(addr); > } > } -- Alex Bennée
