Instead of unconditionally exiting to the exec loop, use the
gen_jr helper to jump to the target if it is valid.
As long as the hit rate in tb_jmp_cache remains high, this
change improves performance.
Perf impact: see the next commit's log.
Signed-off-by: Emilio G. Cota <c...@braap.org>
---
target/i386/translate.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/target/i386/translate.c b/target/i386/translate.c
index 445082b..9982a2d 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -2154,9 +2154,9 @@ static inline void gen_goto_tb(DisasContext *s, int
tb_num, target_ulong eip)
gen_jmp_im(eip);
tcg_gen_exit_tb((uintptr_t)s->tb + tb_num);
} else {
- /* jump to another page: currently not optimized */
+ /* jump to another page */
gen_jmp_im(eip);
- gen_eob(s);
+ gen_jr(s, cpu_tmp0);
}
}
--
2.7.4
