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810b28edb3
Just marking a symbol as weak_odr/linkonce_odr isn't enough for actually tolerating multiple copies of it at linking on windows, it has to be made a proper comdat; make it comdat for all platforms for consistency. This should hopefully fix https://bugzilla.mozilla.org/show_bug.cgi?id=1566288. Differential Revision: https://reviews.llvm.org/D71572
39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.8 -std=c++1y -S -emit-llvm %s -o - | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-windows-gnu -std=c++1y -S -emit-llvm %s -o - | FileCheck %s --check-prefix=MINGW
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// CHECK: @a = internal thread_local global
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// CHECK: @_Z2vtIiE = linkonce_odr thread_local global i32 5
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// CHECK: @_ZZ3inlvE3loc = linkonce_odr thread_local global i32 0
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// CHECK: @_tlv_atexit({{.*}}@_ZN1AD1Ev
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// CHECK: call cxx_fast_tlscc i32* @_ZTW3ext()
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// CHECK: declare cxx_fast_tlscc i32* @_ZTW3ext()
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// CHECK-DAG: define weak_odr hidden cxx_fast_tlscc i32* @_ZTW2vtIiE()
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// CHECK-DAG: define weak_odr hidden cxx_fast_tlscc i32* @_ZTW2vtIvE()
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// CHECK-DAG: define {{.*}} @_ZTW1a
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// MINGW-DAG: define weak_odr hidden i32* @_ZTW2vtIiE() {{.*}} comdat
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// MINGW-DAG: define weak_odr hidden i32* @_ZTW2vtIvE() {{.*}} comdat
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struct A {
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~A();
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};
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thread_local A a;
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extern thread_local int ext;
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int &get_ext() { return ext; }
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template <typename T>
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thread_local int vt = 5;
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int get_vt() { return vt<int>; }
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inline int &inl() {
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thread_local int loc;
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return loc;
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}
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int &use_inl() { return inl(); }
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template int vt<void>;
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int &get_vt_void() { return vt<void>; }
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