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Justin Bogner
cd6820bba1
The implementation of SDLoc has an extra layer of indirection here for no particular reason, and was leading to problems where we were dereferencing pointers to SDNodes that had already been deleted so that we could get at the DebugLoc for a new SDNode. This is one of the errors that came up often in PR26808. Instead, we can just track the DebugLoc and IROrder directly. This makes the code both easier to understand and more correct. It's also basically NFC other than fixing a large number of places where we were reading the memory of deleted SDNodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264470 91177308-0d34-0410-b5e6-96231b3b80d8
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