[PATCH] D45003: [Support] Make line-number cache robust against access patterns.

[Paul Robinson via Phabricator via llvm-commits]

probinson added a comment.

There's commentary in lib/MC/MCParser/AsmParser.cpp about the ungraceful degradation in SourceMgr's cache.  Would this help or simplify what AsmParser is doing?


Repository:
  rL LLVM

https://reviews.llvm.org/D45003