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48 lines
1.7 KiB
48 lines
1.7 KiB
4 months ago
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// RUN: %clang_cc1 -std=c++1y -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
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// Check that we keep the 'extern' when we instantiate the definition of this
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// variable template specialization.
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template<typename T> extern const int extern_redecl;
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template<typename T> const int extern_redecl = 5;
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template const int extern_redecl<int>;
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// CHECK: @_Z13extern_redeclIiE = weak_odr constant
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template<typename T> struct Outer {
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template<typename U> struct Inner {
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template<typename V> static int arr[];
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};
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};
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Outer<char[100]> outer_int;
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int init_arr();
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template<typename T> template<typename U> template<typename V> int Outer<T>::Inner<U>::arr[sizeof(T) + sizeof(U) + sizeof(V)] = { init_arr() };
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int *p = Outer<char[100]>::Inner<char[20]>::arr<char[3]>;
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namespace PR35456 {
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// CHECK: @_ZN7PR354561nILi0EEE = linkonce_odr global i32 0
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template<int> int n;
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int *p = &n<0>;
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}
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// CHECK: @_ZN5OuterIA100_cE5InnerIA20_cE3arrIA3_cEE = linkonce_odr global [123 x i32] zeroinitializer
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// CHECK: @_ZGVN5OuterIA100_cE5InnerIA20_cE3arrIA3_cEE = linkonce_odr global
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// CHECK: @_ZTHN7PR4211112_GLOBAL__N_11nILi0EEE = internal alias {{.*}} @[[PR42111_CTOR:.*]]
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// CHECK: call {{.*}}@_Z8init_arrv
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// Ensure that we use guarded initialization for an instantiated thread_local
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// variable with internal linkage.
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namespace PR42111 {
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int f();
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namespace { template <int = 0> thread_local int n = f(); }
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// CHECK: define {{.*}}@[[PR42111_CTOR]](
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// CHECK: load {{.*}} @_ZGVN7PR4211112_GLOBAL__N_11nILi0EEE
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK: call i32 @_ZN7PR421111fEv(
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// CHECK: store i32 {{.*}}, i32* @_ZN7PR4211112_GLOBAL__N_11nILi0EEE
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// CHECK: store i8 1, i8* @_ZGVN7PR4211112_GLOBAL__N_11nILi0EEE
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int g() { return n<> + n<>; }
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}
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