[PATCH] D61164: [X86] If PreprocessISelDAG reorders a load before a call, make sure we remove dead nodes from the graph

[Nirav Dave via Phabricator via llvm-commits]

niravd added a comment.

I was thinking things pending from the folding optimization in getNode, but I missed that it was the target specific one so it should be fine. That said, I still think it's better to do it unconditionally so it'll be pruned by default with the future additio of Listener-based pruning if that proves too expensive.

In D61164#1480551 <https://reviews.llvm.org/D61164#1480551>, @craig.topper wrote:

> By AND construction, I assume you're referring to turning X86ISD::AND into ISD::AND? What's wrong with that code? It's already removing the node it left dead. Or is there a CSE issue?





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