[PATCH] D117348: [Preprocessor] Reduce the memory overhead of `#define` directives

[Nico Weber via Phabricator via cfe-commits]

thakis added a comment.

Very cool! Looks like it broke lldb builds though: http://45.33.8.238/linux/68321/step_4.txt


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D117348/new/

https://reviews.llvm.org/D117348