E... @junrushao1994 I guess @merrymercy 's opinion is that doing analysis in TE 
is quicker than using the ISL.

ISL is sure a powerful tool for loop analyse, but in my understanding we should 
lower the schedule to C code first before using ISL? Which I think is more time 
consuming.

Currently, Ansor applies some simple but useful analyses based on TE. Though it 
may not be as accurate as ISL does, but it's cheap. Then we count on the tuning 
to try lots of uncertain schedules and find the best one by measuring.





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