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 <r...@twiddle.net>
Signed-off-by: Emilio G. Cota <c...@braap.org>
---
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 e32e38c..02cad96 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -4085,8 +4085,12 @@ 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);
}
}
--
2.7.4
