[PATCH] D24417: [Coroutines] Fix dbg information handling in coro-split.

[Gor Nishanov via llvm-commits]

GorNishanov created this revision.
GorNishanov added a reviewer: majnemer.
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Without the fix, if there was a function inlined into the coroutine with debug information, CloneFunctionInto(NewF, &F, VMap, /*ModuleLevelChanges=*/true, Returns); would duplicate all of the debug information including the DICompileUnit.

We know use VMap to indicate that debug metadata for a File, Unit and FunctionType should not be duplicated when we creating clones that will become f.resume, f.destroy and f.cleanup.

https://reviews.llvm.org/D24417

Files:
  lib/Transforms/Coroutines/CoroFrame.cpp
  lib/Transforms/Coroutines/CoroSplit.cpp
  test/Transforms/Coroutines/coro-split-dbg.ll

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