[LLVMdev] Decouple LoopVectorizer from O3

[Anadi Mishra]

Hello,

I am trying out the LoopVectorizer(LV) pass and would like to decouple it
from O3 which is currently required to run LV. I want to do this because I
want to understand the behaviour of LV by trying simple loops but the O3
mostly optimises away the loop body.

Any ideas would be appreciated.

Best,
Anadi.
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