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llvm-project/clang/test/Modules/minimal-identifier-tables.cpp

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[modules] Separately track whether an identifier's preprocessor information and name lookup information have changed since deserialization. For a C++ modules build, we do not need to re-emit the identifier into the serialized identifier table if only the name lookup information has changed (and in all cases, we don't need to re-emit the macro information if only the name lookup information has changed). llvm-svn: 259901
2016-02-06 03:03:40 +08:00
// RUN: rm -rf %t
// RUN: mkdir %t
// RUN: echo 'extern int some_long_variable_name;' > %t/x.h
// RUN: echo 'extern int some_long_variable_name;' > %t/y.h
// RUN: echo 'module X { header "x.h" } module Y { header "y.h" }' > %t/map
// RUN: %clang_cc1 -fmodules -x c++ -fmodule-name=X %t/map -emit-module -o %t/x.pcm
// RUN: %clang_cc1 -fmodules -x c++ -fmodule-name=Y %t/map -fmodule-file=%t/x.pcm -emit-module -o %t/y.pcm
// RUN: cat %t/y.pcm | FileCheck %s
//
// CHECK-NOT: some_long_variable_name