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...depends on each workload, so it'll change for every different set of arguments, which in an n-body simulation, changes dynamically. cheers, --renato -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20131114/1cbbfbff/attachment.html>

Nadav, Arnold, et al., I have a number of loops that I would like us to be able to autovectorize (common, for example, in n-body inter-particle force kernels), and the problem is that they look like this: for (int i = 0; i < N; ++i) { if (r[i] > 0) v += m[i]*...; } where, as written, m[i] is not accessed unless the condition is true. The general problem (as is noted by the loop