[PATCH] D144844: [C++20] [Modules] Offer -fno-import-inter-module-function-defs to avoid duplicated compilation in modules

[Chuanqi Xu via Phabricator via cfe-commits]

ChuanqiXu created this revision.
ChuanqiXu added reviewers: iains, Bigcheese, dblaikie.
ChuanqiXu added a project: clang-modules.
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ChuanqiXu requested review of this revision.
Herald added subscribers: cfe-commits, MaskRay.
Herald added a project: clang.

Close https://github.com/llvm/llvm-project/issues/61015
Close https://github.com/llvm/llvm-project/issues/60996

Clang will import the function definitions from other module unit within
optimizations by default to get the best performance. But there are
cases users prefer faster compilation speed than the best performance.

Although we may not agree such ideas, we should offer an option for the
users to give them the right to choose.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D144844

Files:
  clang/include/clang/Basic/CodeGenOptions.def
  clang/include/clang/Driver/Options.td
  clang/lib/CodeGen/CodeGenModule.cpp
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/test/Driver/module-no-import-from-other-tu.cppm
  clang/test/Modules/inter-module-imports-function-defs.cppm

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