| commit | b125f9dc7bd68cd4c57189db4da83b0620b28a72 | |
| author | Richard Henderson <rth@twiddle.net> | |
| Tue, 22 Sep 2015 20:01:15 +0000 (22 13:01 -0700) | ||
| committer | Richard Henderson <rth@twiddle.net> | |
| Wed, 7 Oct 2015 09:36:53 +0000 (7 20:36 +1100) | ||
| tree | 8d2b7a06e64121738343a3abebb5070b64f4ff21 | treesnapshot (tar.gz zip) |
| parent | f293709c6af7a65a9bcec09cdba7a60183657a3e | commitdiff |
tcg: Check for overflow via highwater mark
We currently pre-compute an worst case code size for any TB, which
works out to be 122kB. Since the average TB size is near 1kB, this
wastes quite a lot of storage.
Instead, check for overflow in between generating code for each opcode.
The overhead of the check isn't measurable and wastage is minimized.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
We currently pre-compute an worst case code size for any TB, which
works out to be 122kB. Since the average TB size is near 1kB, this
wastes quite a lot of storage.
Instead, check for overflow in between generating code for each opcode.
The overhead of the check isn't measurable and wastage is minimized.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
| include/exec/exec-all.h | diffblobblamehistory | |
| tcg/tcg.c | diffblobblamehistory | |
| tcg/tcg.h | diffblobblamehistory | |
| translate-all.c | diffblobblamehistory |