https://bugs.exim.org/show_bug.cgi?id=2698
Zoltan Herczeg <hzmester@???> changed:
What |Removed |Added
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CC| |hzmester@???
--- Comment #2 from Zoltan Herczeg <hzmester@???> ---
I cut back EARLY_FAIL_ENHANCE_MAX too much.
If you are interested about this optimization, you can read section "Single
character repetition optimizations" in
https://zherczeg.github.io/sljit/pcre2_jit.html
There is no perfect value for this constant, the "enhanced" iterators can slow
down ceartain patterns, but speed up others. But dropping it from 3 to 1 was
too much, I probably wanted to drop it to 2 (that means "enhance" the first two
iterators).
Could you try to change this constant to the following and see what happens:
#define EARLY_FAIL_ENHANCE_MAX (1 + 2)
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