[PATCH] Rename determineInsertionPoints to determinePHINodes, expose it so it can be reused

[Daniel Berlin]

================
Comment at: lib/Transforms/Utils/PromoteMemoryToRegister.cpp:1014
@@ +1013,3 @@
+    const DenseMap<DomTreeNode *, unsigned> &DomLevels,
+    SmallVectorImpl<std::pair<unsigned, BasicBlock *>> &PHIBlocks) {
+
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Note that i have deliberately not changed the algorithm handling numbering here. Post-this-patch, i will move the block number lookups and sorting into the caller, and make this a simple SmallVector<BasicBlock *>, and remove the BBNumbers argument)

http://reviews.llvm.org/D9118

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