During MLIR translation to LLVMIR if an inlineable call has an UnkownLoc we get this error message:
```
inlinable function call in a function with debug info must have a !dbg location
call void @callee()
```
There is code that checks for this case and strips debug information to avoid this situation. I'm expanding this code to handle the case where an debug location points at a UnknownLoc. For example, a NamedLoc whose child location is an UnknownLoc.
Reviewed By: ftynse
Differential Revision: https://reviews.llvm.org/D121633
Also add a verifier pass to ExecutionEngine.
It's hard to come up with a test case, since mlir-opt always add location info after parsing it (?)
Differential Revision: https://reviews.llvm.org/D88135
Summary:
This revision adds basic support for emitting line table information when exporting to LLVMIR. We don't yet have a story for supporting all of the LLVM debug metadata, so this revision stubs some features(like subprograms) to enable emitting line tables.
Differential Revision: https://reviews.llvm.org/D73934
