To whom it may concern,
I’m implementing one pragma to optimize “for” loop.
We assume the loop will run at least 1 times when we set following pragma:
#pragma clang loop min(1)
for(i = 0; i < n; I ++)
Then we can remove the first branch which go to exit block when “n < =0”.
This is one picture which show llvm how to do loop rotation.
Is it the proper place(LoopRotation.cpp) to implement my feature?
Or is there more suitable place to do it?