why we map lt function to lessthan function？

[HaoChen-ch]

incubator-gluten/cpp/velox/substrait/SubstraitParser.cc

Line 382 in 3a42e8f

{"lt", "lessthan"},

It seems that lt function is different with lessthan function .and lt use simd instruct to accelerate fliter ,why not use le ? same as lte,gt, gt2, ...

[PHILO-HE]

@HaoChen-ch, maybe, the mapping is for fixing semantic issues. You can try to remove them to see whether Spark UTs (already imported into Gluten) can pass.