[PATCH] D50828: Add profiling and canonicalization support to demangler nodes. No functionality change intended.

[Richard Smith - zygoloid via Phabricator via llvm-commits]

rsmith created this revision.
rsmith added reviewers: erik.pilkington, dlj.
Herald added a subscriber: llvm-commits.

Adds the ability to deduplicate demangler nodes as they're being created. I've
kept the new functionality behind #ifdefs to make it easier to keep this in
sync with the libc++abi version of this code. This is a prerequisite for
profile data remapping functionality; you can see the big picture here:
https://reviews.llvm.org/differential/diff/160950/


Repository:
  rL LLVM

https://reviews.llvm.org/D50828

Files:
  lib/Demangle/ItaniumDemangle.cpp

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