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I'm trying to fix that bug: https://llvm.org/bugs/show_bug.cgi?id=20049 It turns out this is the kind of optimization that I really need, as when it isn't done, all kind of other optimizations opportunities down the road are not realized as they are not exposed. I have no idea where to start digging for this. I assume there is some kind of interaction between memory dependency and alias

...obably come back with more question once I've played with these options a bit. Sorry for the late answer, I was mostly off the grid the past 2 weeks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160104/91d3ad68/attachment.html>