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author	Richard Smith <richard-llvm@metafoo.co.uk>
	Fri, 25 Jul 2014 04:40:03 +0000 (04:40 +0000)
committer	Richard Smith <richard-llvm@metafoo.co.uk>
	Fri, 25 Jul 2014 04:40:03 +0000 (04:40 +0000)
commit	daa69e00f5c49893844def565a67f75d7b77a6e3
tree	84e28d0f95e59f71c351091689f89988a7d07d06	tree \| snapshot
parent	bf32f773ccd4f200228259ef32249ad0bc7838a6	commit \| diff

[modules] Substantially improve handling of #undef:

* Track override set across module load and save
* Track originating module to allow proper re-export of #undef
* Make override set properly transitive when it picks up a #undef

This fixes nearly all of the remaining macro issues with self-host.

llvm-svn: 213922

14 files changed:

clang/include/clang/Lex/MacroInfo.h		diff \| blob \| history
clang/include/clang/Lex/Preprocessor.h		diff \| blob \| history
clang/include/clang/Serialization/ASTReader.h		diff \| blob \| history
clang/lib/Lex/PPDirectives.cpp		diff \| blob \| history
clang/lib/Lex/Pragma.cpp		diff \| blob \| history
clang/lib/Serialization/ASTReader.cpp		diff \| blob \| history
clang/lib/Serialization/ASTWriter.cpp		diff \| blob \| history
clang/test/Modules/macro-reexport/c1.h		diff \| blob \| history
clang/test/Modules/macro-reexport/d1.h		diff \| blob \| history
clang/test/Modules/macro-reexport/e1.h	[new file with mode: 0644]	blob
clang/test/Modules/macro-reexport/e2.h	[new file with mode: 0644]	blob
clang/test/Modules/macro-reexport/f1.h	[new file with mode: 0644]	blob
clang/test/Modules/macro-reexport/macro-reexport.cpp		diff \| blob \| history
clang/test/Modules/macro-reexport/module.modulemap		diff \| blob \| history

Domain: System / Toolchain;

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