[PATCH] D137609: [C++20] [Modules] Remove unmaintained header modules

[Chuanqi Xu via Phabricator via cfe-commits]

ChuanqiXu created this revision.
ChuanqiXu added reviewers: rsmith, iains, dblaikie, Bigcheese.
ChuanqiXu added a project: clang-modules.
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Currently there is a `-emit-header-module` mode, which can combine several headers together as a module interface. However, this breaks our assumption (for standard c++ modules) about `module interface`. The `module interface` should come from a module interface unit. And if it is a header, it should be a header unit. And currently we have no ideas to combine several headers together.

So I think this mode is an experimental one and it is not maintained and it is not used. So it will be better to remove them.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D137609

Files:
  clang/include/clang/Frontend/FrontendActions.h
  clang/include/clang/Frontend/FrontendOptions.h
  clang/lib/Frontend/CompilerInvocation.cpp
  clang/lib/Frontend/FrontendActions.cpp
  clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
  clang/test/CXX/cpp/cpp.module/Inputs/attrs.h
  clang/test/CXX/cpp/cpp.module/Inputs/empty.h
  clang/test/CXX/cpp/cpp.module/p1.cpp
  clang/test/CXX/cpp/cpp.module/p2.cpp
  clang/test/CXX/module/module.interface/p2.cpp
  clang/test/Driver/header-module.cpp
  clang/test/Driver/modules.cpp
  clang/test/Misc/serialized-diags-emit-header-module-misconfig.c
  clang/test/Modules/no-module-map.cpp

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