[PATCH] D158678: [NFC][AsmPrinter] Use std::visit in constructVariableDIEImpl

[Scott Linder via Phabricator via llvm-commits]

scott.linder created this revision.
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This potentially has a slightly positive performance impact, as
std::visit can be implemented as a `switch`-like jump rather than
a series of `if`s.

More importantly, the reader can be confident is no overlap between the
cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D158678

Files:
  llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
  llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h

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