[llvm-bugs] [Bug 33257] New: Allow to save PCH into memory

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33257

            Bug ID: 33257
           Summary: Allow to save PCH into memory
           Product: clang
           Version: unspecified
          Hardware: All
                OS: All
            Status: ASSIGNED
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: krasimir at google.com
          Reporter: ibiryukov at google.com
                CC: llvm-bugs at lists.llvm.org

Currently, PCH can only be written to FrontendOptions.OutputFile, leading to
complex code for managing it inside ASTUnit(used by libclang/clangd).

Having an option to write it into memory would allow to get rid of disk
accesses altogether.
(And vfs::FileSystem could be used to read it from memory).

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