llvm-project/clang/test/CodeGenCXX/explicit-instantiation.cpp

// RUN: %clang_cc1 -emit-llvm -triple i686-pc-linux-gnu -o %t %s
// RUN: grep "define i32 @_ZNK4plusIillEclERKiRKl" %t | count 1

template<typename T, typename U, typename Result>
struct plus {
  Result operator()(const T& t, const U& u) const;
};

template<typename T, typename U, typename Result>
Result plus<T, U, Result>::operator()(const T& t, const U& u) const {
  return t + u;
}

template struct plus<int, long, long>;
Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446 2009-12-16 04:14:24 +08:00			`// RUN: %clang_cc1 -emit-llvm -triple i686-pc-linux-gnu -o %t %s`
Tweak the semantics of FunctionDecl::isOutOfLine to consider an instantiation of a member function template or member function of a class template to be out-of-line if the definition of that function template or member function was defined out-of-line. This ensures that we get the correct linkage for explicit instantiations of out-of-line definitions. llvm-svn: 81562 2009-09-12 04:15:17 +08:00			`// RUN: grep "define i32 @_ZNK4plusIillEclERKiRKl" %t \| count 1`
Make sure that CodeGen sees template instantiations. llvm-svn: 72433 2009-05-27 04:50:29 +08:00
			`template<typename T, typename U, typename Result>`
			`struct plus {`
Improve the AST representation and semantic analysis for extern templates. We now distinguish between an explicit instantiation declaration and an explicit instantiation definition, and know not to instantiate explicit instantiation declarations. Unfortunately, there is some remaining confusion w.r.t. instantiation of out-of-line member function definitions that causes trouble here. llvm-svn: 81053 2009-09-05 06:48:11 +08:00			`Result operator()(const T& t, const U& u) const;`
Make sure that CodeGen sees template instantiations. llvm-svn: 72433 2009-05-27 04:50:29 +08:00			`};`

Improve the AST representation and semantic analysis for extern templates. We now distinguish between an explicit instantiation declaration and an explicit instantiation definition, and know not to instantiate explicit instantiation declarations. Unfortunately, there is some remaining confusion w.r.t. instantiation of out-of-line member function definitions that causes trouble here. llvm-svn: 81053 2009-09-05 06:48:11 +08:00			`template<typename T, typename U, typename Result>`
			`Result plus<T, U, Result>::operator()(const T& t, const U& u) const {`
			`return t + u;`
			`}`

Make sure that CodeGen sees template instantiations. llvm-svn: 72433 2009-05-27 04:50:29 +08:00			`template struct plus<int, long, long>;`