[PATCH] D149942: [IR] Drop const in DILocation::getMergedLocation

[Christian Ulmann via Phabricator via llvm-commits]

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This commit removes constness from DILocation::getMergedLocation and
fixes all its users accordingly.

Having constness on the parameters forced the return type to be const
as well, which does force usage of `const_cast` when the location needs
to be used in metadata nodes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149942

Files:
  llvm/include/llvm/IR/DebugInfoMetadata.h
  llvm/include/llvm/IR/Instruction.h
  llvm/lib/IR/DebugInfo.cpp
  llvm/lib/IR/DebugInfoMetadata.cpp
  llvm/lib/Transforms/Scalar/LICM.cpp
  llvm/lib/Transforms/Scalar/SimplifyCFGPass.cpp
  llvm/lib/Transforms/Utils/SimplifyCFG.cpp
  mlir/include/mlir/Target/LLVMIR/ModuleTranslation.h
  mlir/lib/Target/LLVMIR/DebugTranslation.cpp
  mlir/lib/Target/LLVMIR/DebugTranslation.h
  mlir/lib/Target/LLVMIR/LoopAnnotationTranslation.cpp
  mlir/lib/Target/LLVMIR/ModuleTranslation.cpp

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