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...abled by default? Or are you requesting that if the user chooses -vectorize the compiler prints a warning (unused param since no SIMD)? cheers, --renato -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130103/d2254921/attachment.html>

Hi Akira! > > Does the current loop vectorizer inquire about the SIMD capabilities of the target architecture when it decides whether it is profitable to vectorize a loop? Yes, it uses a cost model to determine the profitability of vectorization. At the moment only x86 provides the necessary hooks that are needed for calculating the costs. We may need to change the cost defaults to

Nadav (or anyone who is familiar with the loop vectorizer), Does the current loop vectorizer inquire about the SIMD capabilities of the target architecture when it decides whether it is profitable to vectorize a loop? I am asking this because I would like to have loop vectorization disabled for targets that don't support SIMD instructions (for example, standard mips32). Loop vectorization