[PATCH] D135440: [SourceManager] Speedup getFileIDLocal with a separate Offset Table.

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added a comment.

> Speedup: Linux kernel: getFileIDLocal overhead is reduced to 1.66% (~30% saving)

What's the fraction related to the whole parsing time?

> The sad bit is thatit increases SourceManager memory usage, however it is a small fraction (< 10%) of clang AST memory usage, which I think it is mostly negligible.

What's the fraction related to the whole memory usage?

Have you tried decreasing the number of linear probing (8) or switching to branch-less binary search?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D135440/new/

https://reviews.llvm.org/D135440