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I am trying to create auto-vectorized code with clang-3.2
From the slides here – http://llvm.org/devmtg/2012-04-12/Slides/Hal_Finkel.pdf
I should be able to generate vectorized code with this command line.
bin/clang++ -c -O3 -mllvm -vectorize -bb-vectorize-aligned-only clang-auto-vec.cpp
But it throws an error error: unsupported option '-b b-vectorize-aligned-only'
If i remove just the -bb-vectorize-aligned-only, it doesn’t create any vectorized code.
whats going wrong here?
Prepend
-mllvmto every flag. E.g.-mllvm -vectorize -mllvm -bb-vectorize-aligned-only