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
22 lines
908 B
C++
22 lines
908 B
C++
// RUN: %clang_cc1 -fmodules-ts %S/module.cppm -triple %itanium_abi_triple -emit-module-interface -o %t
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// RUN: %clang_cc1 -fmodules-ts %s -triple %itanium_abi_triple -fmodule-file=%t -emit-llvm -o - | FileCheck %s --implicit-check-not=unused --implicit-check-not=global_module
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// CHECK-DAG: @_ZW6Module19extern_var_exported = external {{(dso_local )?}}global
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// CHECK-DAG: @_ZW6Module19inline_var_exported = linkonce_odr {{(dso_local )?}}global
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// CHECK-DAG: @_ZW6Module18const_var_exported = available_externally {{(dso_local )?}}constant i32 3
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import Module;
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void use() {
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// CHECK: define linkonce_odr {{.*}}@_ZW6Module20used_inline_exportedv
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used_inline_exported();
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// CHECK: declare {{.*}}@_ZW6Module18noninline_exportedv
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noninline_exported();
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(void)&extern_var_exported;
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(void)&inline_var_exported;
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(void)&const_var_exported;
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// Module-linkage declarations are not visible here.
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}
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