Adrian Prantl 42d71b9906 Debug info: (Bugfix) Make sure artificial functions like _GLOBAL__I_a ...

are not associated with any source lines.

Previously, if the Location of a Decl was empty, EmitFunctionStart would
just keep using CurLoc, which would sometimes be correct (e.g., thunks)
but in other cases would just point to a hilariously random location.

This patch fixes this by completely eliminating all uses of CurLoc from
EmitFunctionStart and rather have clients explicitly pass in a
SourceLocation for the function header and the function body.

rdar://problem/14985269

llvm-svn: 205999

2014-04-10 23:21:53 +00:00

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