[all-commits] [llvm/llvm-project] eded5d: [ORC] Add a NonOwningSymbolStringPtr utility.

[lhames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: eded5d381565d1d2f0951b745dd767fc5fba3576
      https://github.com/llvm/llvm-project/commit/eded5d381565d1d2f0951b745dd767fc5fba3576
  Author: Lang Hames <lhames at gmail.com>
  Date:   2023-01-31 (Tue, 31 Jan 2023)

  Changed paths:
    M llvm/include/llvm/ExecutionEngine/Orc/SymbolStringPool.h
    M llvm/unittests/ExecutionEngine/Orc/SymbolStringPoolTest.cpp

  Log Message:
  -----------
  [ORC] Add a NonOwningSymbolStringPtr utility.

Introduces a non-owning SymbolStringPool entry pointer. Instances of the new
type can be compared with SymbolStringPtr instances, but do not participate in
ref-counting and are therefore cheaper to copy. This makes it efficient to use
in algorithms that use symbol-strings as ids, e.g. ORC's waiting-on graph. A
future commit will rewrite ORC's waiting-on graph.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D142314