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: Alex Bennée <[email protected]> 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]> --- 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); } } -- 2.9.3
