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...prefer the latter since e.g. integer addition is associative, but floating point addition isn't; and it is better to force programmers to handle the two operations differently. [1]: For instance, things like this: https://github.com/llvm-mirror/llvm/blob/master/lib/Analysis/ScalarEvolution.cpp#L7564 are likely to stay common between floating point and integer add recs. -- Sanjoy

Hi, I'm working now on extending SCEV Analysis and adding FP support. At the beginning, I want to vectorize this loop: float fp_inc; float x = init; for (int i=0;i<N;i++){ A[i] = x; x += fp_inc; // Loop invariant variable or constant } In this loop "x" is a FP induction variable. But it is not the "primary" induction and loop trip count is still depends

...prefer the latter since e.g. integer addition is associative, but floating point addition isn't; and it is better to force programmers to handle the two operations differently. [1]: For instance, things like this: https://github.com/llvm-mirror/llvm/blob/master/lib/Analysis/ScalarEvolution.cpp#L7564 are likely to stay common between floating point and integer add recs. -- Sanjoy -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160518/f406e553/attachment.html>