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header. This is part of a series of patches to allow LLVM to check for complete pointee types when computing its pointer traits. This is absolutely necessary to get correct (or reproducible) results for things like how many low bits are guaranteed to be zero. The MetadataTracking helpers aren't actually independent. They rely on constructing a PointerUnion between Metadata and MetadataAsValue pointers, which requires know the alignment of pointers to those types which requires them to be complete. The .cpp file even defined a method declared in Metadata.h! These really don't seem like something that is separable, and there is no real layering problem with just placing them together. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256531 91177308-0d34-0410-b5e6-96231b3b80d8
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