idea, if you can tolerate the slowdown. With
<option>-O1</option> line numbers in error messages can
be inaccurate, although generally speaking running Memcheck on code compiled
-at <option>-O1</option> works fairly well.
+at <option>-O1</option> works fairly well, and the speed improvement
+compared to running <option>-O0</option> is quite significant.
Use of
<option>-O2</option> and above is not recommended as
Memcheck occasionally reports uninitialised-value errors which don't