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is morphed by AnalyzeNewNode into a previously processed node, and different result values of that node are remapped to values with different nodes, then we could end up using wrong values here [we were assuming that all results remap to values with the same underlying node]. This seems theoretically possible, but I don't have a testcase. The meat of the patch is in the changes to AnalyzeNewNode/AnalyzeNewValue and ReplaceNodeWith. While there, I changed names like RemapNode to RemapValue, since it really remaps values. To tell the truth, I would be much happier if we were only remapping nodes (it would simplify a bunch of logic, and allow for some cute speedups) but I haven't yet worked out how to do that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58372 91177308-0d34-0410-b5e6-96231b3b80d8
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