[all-commits] [llvm/llvm-project] 7c294e: [memprof] Simplify readMemprof (NFC) (#119930)

[Kazu Hirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7c294eb78009ef252aafa269963f5496d1dedf6f
      https://github.com/llvm/llvm-project/commit/7c294eb78009ef252aafa269963f5496d1dedf6f
  Author: Kazu Hirata <kazu at google.com>
  Date:   2024-12-14 (Sat, 14 Dec 2024)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/MemProfiler.cpp

  Log Message:
  -----------
  [memprof] Simplify readMemprof (NFC) (#119930)

This patch essentially replaces:

  std::pair<const std::vector<Frame> *, unsigned>

with:

  ArrayRef<Frame>

This way, we can store and pass ArrayRef<Frame>, conceptually one
item, instead of the pointer and index.

The only problem is that we don't have an existing hash function for
ArrayRef<Frame>>, so we provide a custom one, namely
CallStackHash.



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