[all-commits] [llvm/llvm-project] 7c5e4e: Track the RequestingModule in the HeaderSearch Loo...

[Richard Smith via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7c5e4efb099e0badb4912467b7286938a4ed5011
      https://github.com/llvm/llvm-project/commit/7c5e4efb099e0badb4912467b7286938a4ed5011
  Author: Richard Smith <richard at metafoo.co.uk>
  Date:   2023-07-21 (Fri, 21 Jul 2023)

  Changed paths:
    M clang/include/clang/Lex/HeaderSearch.h
    M clang/lib/Lex/HeaderSearch.cpp
    A clang/test/Modules/lookup-file-cache.cpp

  Log Message:
  -----------
  Track the RequestingModule in the HeaderSearch LookupFile cache.

Different requesting modules can have different lookup results, so don't
cache results across modules.

Fixes a regression introduced in reviews.llvm.org/D132779.

Test case based on one provided by Jan Svoboda.

Reviewed By: jansvoboda11

Differential Revision: https://reviews.llvm.org/D156000