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ae4dce8659
Implement a demangleable strong ownership symbol mangling. * The original module symbol mangling scheme turned out to be undemangleable. * The hoped-for C++17 compatibility of weak ownership turns out to be fragile * C++20 now has better ways of controlling C++17 compatibility The issue is captured on the ABI list at: https://github.com/itanium-cxx-abi/cxx-abi/issues/134 GCC implements this new mangling. The old mangling is unceremoniously dropped. No backwards compatibility, no deprectated old-mangling flag. It was always labelled experimental. (Old and new manglings cannot be confused.) Reviewed By: dblaikie Differential Revision: https://reviews.llvm.org/D122256
44 lines
1014 B
C++
44 lines
1014 B
C++
// RUN: %clang_cc1 -std=c++20 %s -triple %itanium_abi_triple -emit-llvm -o - | FileCheck %s
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export module FOO;
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class One;
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class Two;
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export template<typename T> struct TPL
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{
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void M (T *);
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template<typename U> void N (T *, U*);
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};
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template<typename T>
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void TPL<T>::M (T *) {}
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template<typename T> template<typename U> void TPL<T>::N (T *, U*) {}
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// CHECK-DAG: void @_ZNW3FOO3TPLIS_3OneE1MEPS1_(
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template void TPL<One>::M (One *);
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// CHECK-DAG: void @_ZNW3FOO3TPLIS_3OneE1NIS_3TwoEEvPS1_PT_(
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template void TPL<One>::N<Two> (One *, Two *);
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namespace NMS {
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class One;
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class Two;
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export template<typename T> struct TPL
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{
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void M (T *);
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template<typename U> void N (T *, U*);
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};
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template<typename T>
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void TPL<T>::M (T *) {}
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template<typename T> template<typename U> void TPL<T>::N (T *, U*) {}
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// CHECK-DAG: void @_ZN3NMSW3FOO3TPLINS_S0_3OneEE1MEPS2_(
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template void TPL<One>::M (One *);
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// CHECK-DAG: void @_ZN3NMSW3FOO3TPLINS_S0_3OneEE1NINS_S0_3TwoEEEvPS2_PT_
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template void TPL<One>::N<Two> (One *, Two *);
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}
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