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027898a77a
Add new API for converting temporaries that may self-reference. Self-referencing nodes are not allowed to be uniqued, so sending them into `replaceWithUniqued()` is dangerous (and this commit adds assertions that prevent it). `replaceWithPermanent()` has similar semantics to `get()` followed by calls to `replaceOperandWith()`. In particular, if there's a self-reference, it returns a distinct node; otherwise, it returns a uniqued one. Like `replaceWithUniqued()` and `replaceWithDistinct()` (well, it calls out to them) it mutates the temporary node in place if possible, only calling `replaceAllUsesWith()` on a uniquing collision. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228726 91177308-0d34-0410-b5e6-96231b3b80d8 |
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