3a60b41949
### What changes were proposed in this pull request? use while-loop instead of the recursive way ### Why are the changes needed? 3% ~ 10% faster ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? existing testsuites Closes #29095 from zhengruifeng/tree_pred_opt. Authored-by: zhengruifeng <ruifengz@foxmail.com> Signed-off-by: Sean Owen <srowen@gmail.com> |
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