[LLVMdev] Trying out Loop Vectorizer

Michael Lam michael.lam.sk at gmail.com
Mon Dec 31 11:03:05 PST 2012

Hi all,

I am trying out the new loop vectorizer in LLVM 3.2.  I wanted to see the
effect of the pass in `opt` but I have no success.  I used LLVM IR
generated from C examples in
http://blog.llvm.org/2012/12/new-loop-vectorizer.html#more and pass them to
`opt -S -O3 -vectorize-loops example.ll`.  However, I do not see vectorized
output.  What am I doing wrong?

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