Reid Kleckner 55baeefd54 [codeview] Delete FunctionInfo copy ctor and move out of DenseMap ...

We were unnecessarily copying a bunch of these FunctionInfo objects
around when rehashing the DenseMap.

Furthermore, r327620 introduced pointers referring to objects owned by
FunctionInfo, and the default copy ctor did the wrong thing in this
case, leading to use-after-free when the DenseMap gets rehashed.

I will rebase r327620 on this next and recommit it.

llvm-svn: 327665

2018-03-15 21:12:21 +00:00

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