Improve zstd_opt build speed and size #2898
Merged
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Use the same trick as we did for zstd_lazy in PR #2828:
Additionally, we no longer inline
ZSTD_compressBlock_opt_generic
intoevery function, since
dictMode
is no longer used as a template. Createtwo specializations, for opt levels 0 and 2, and call one of the two
specializations.
Lastly, remove the hack that disabled inlining for zstd_opt for the
Linux Kernel, as we've gotten most of the benefit already.
Compilation time sees a ~4x reduction:
Build size is reduced by 150KB - 200KB:
There is a <2% speed loss in all cases:
Fixes Issue #2862.