| commit | b97a879de980e99452063851597edb98e7e8039c | |
| author | Richard Henderson <rth@twiddle.net> | |
| Wed, 14 Jun 2017 15:18:36 +0000 (14 08:18 -0700) | ||
| committer | Richard Henderson <rth@twiddle.net> | |
| Mon, 19 Jun 2017 18:11:25 +0000 (19 11:11 -0700) | ||
| tree | 46e1e49e4b075f59db60126a3917bc3e0eb44fc2 | treesnapshot (tar.gz zip) |
| parent | 308714e6bc945389c64faf1b9213e2c0d3f03391 | commitdiff |
tcg: Increase hit rate of lookup_tb_ptr
We can call tb_htable_lookup even when the tb_jmp_cache is completely
empty. Therefore, un-nest most of the code dependent on tb != NULL
from the read from the cache.
This improves the hit rate of lookup_tb_ptr; for instance, when booting
and immediately shutting down debian-arm, the hit rate improves from
93.2% to 99.4%.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
We can call tb_htable_lookup even when the tb_jmp_cache is completely
empty. Therefore, un-nest most of the code dependent on tb != NULL
from the read from the cache.
This improves the hit rate of lookup_tb_ptr; for instance, when booting
and immediately shutting down debian-arm, the hit rate improves from
93.2% to 99.4%.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
| tcg-runtime.c | diffblobblamehistory |