diff options
author | Richard Henderson <rth@twiddle.net> | 2013-09-19 12:16:45 -0700 |
---|---|---|
committer | Richard Henderson <rth@twiddle.net> | 2013-12-10 09:23:45 -0800 |
commit | 0ec9eabc7f6020418e1f3b3273d1dd701f7f87f9 (patch) | |
tree | 62149126b4a79d1d7cfa3f7aece7d97ad0865f13 /COPYING | |
parent | 8f84271da83c0e9f92aa7c1c2d0d3875bf0a5cb8 (diff) |
tcg: Use bitmaps for free temporaries
We previously allocated 32-bits per temp for the next_free_temp entry.
We now allocate 4 bits per temp across the 4 bitmaps.
Using a linked list meant that if a translator is tweeked, resulting in
temps being freed in a different order, that would have follow-on effects
throughout the TB. Always allocating the lowest free temp means that
follow-on effects are minimized, which can make it easier to diff output
when debugging the translators.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions