[PATCH] This patch introduces MemorySSA, a virtual SSA form for memory.Details on what it looks like are in MemorySSA.h

[Philip Reames]

This is looking reasonable complete.  Any chance we could land it in it's current form and evolve it in tree?  Tracking changes is becoming quite hard.

Using this to implement a simple cross block DSE might be an interesting proof of concept.  I'm not set on that idea, but it would be nice to have something in tree to show this actually working.  Once we have that, we can migrate other passes to it one by one.


http://reviews.llvm.org/D7864

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