[llvm-dev] Loop Unroll

[legend xx via llvm-dev]

Hi,

I'm interesting in find a pass for loop unrolling in LLVM compiler. I tried
opt --loop-unroll --unroll-count=4, but it don't work well.

What pass I can used and how?

I would also like to know if there is any way to mark the loops that I want
them to be unroll

Thanks you.
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