1 // RUN: %clang_cc1 -std=c++11 %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK --check-prefix=CXX11 2 // RUN: %clang_cc1 -std=c++1z %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK --check-prefix=CXX17 3 4 struct A { 5 static const int Foo = 123; 6 }; 7 // CHECK: @_ZN1A3FooE = constant i32 123, align 4 8 const int *p = &A::Foo; // emit available_externally 9 const int A::Foo; // convert to full definition 10 11 struct PODWithInit { 12 int g = 42; 13 char h = 43; 14 }; 15 struct CreatePOD { 16 // Deferred initialization of the structure here requires changing 17 // the type of the global variable: the initializer list does not include 18 // the tail padding. 19 // CXX11: @_ZN9CreatePOD3podE = available_externally constant { i32, i8 } { i32 42, i8 43 }, 20 static constexpr PODWithInit pod{}; 21 }; 22 const int *p_pod = &CreatePOD::pod.g; 23 24 struct Bar { 25 int b; 26 }; 27 28 struct MutableBar { 29 mutable int b; 30 }; 31 32 struct Foo { 33 // CXX11: @_ZN3Foo21ConstexprStaticMemberE = available_externally constant i32 42, 34 // CXX17: @_ZN3Foo21ConstexprStaticMemberE = linkonce_odr constant i32 42, 35 static constexpr int ConstexprStaticMember = 42; 36 // CHECK: @_ZN3Foo17ConstStaticMemberE = available_externally constant i32 43, 37 static const int ConstStaticMember = 43; 38 39 // CXX11: @_ZN3Foo23ConstStaticStructMemberE = available_externally constant %struct.Bar { i32 44 }, 40 // CXX17: @_ZN3Foo23ConstStaticStructMemberE = linkonce_odr constant %struct.Bar { i32 44 }, 41 static constexpr Bar ConstStaticStructMember = {44}; 42 43 // CXX11: @_ZN3Foo34ConstexprStaticMutableStructMemberE = external global %struct.MutableBar, 44 // CXX17: @_ZN3Foo34ConstexprStaticMutableStructMemberE = linkonce_odr global %struct.MutableBar { i32 45 }, 45 static constexpr MutableBar ConstexprStaticMutableStructMember = {45}; 46 }; 47 // CHECK: @_ZL15ConstStaticexpr = internal constant i32 46, 48 static constexpr int ConstStaticexpr = 46; 49 // CHECK: @_ZL9ConstExpr = internal constant i32 46, align 4 50 static const int ConstExpr = 46; 51 52 // CHECK: @_ZL21ConstexprStaticStruct = internal constant %struct.Bar { i32 47 }, 53 static constexpr Bar ConstexprStaticStruct = {47}; 54 55 // CHECK: @_ZL28ConstexprStaticMutableStruct = internal global %struct.MutableBar { i32 48 }, 56 static constexpr MutableBar ConstexprStaticMutableStruct = {48}; 57 58 void use(const int &); 59 void foo() { 60 use(Foo::ConstexprStaticMember); 61 use(Foo::ConstStaticMember); 62 use(Foo::ConstStaticStructMember.b); 63 use(Foo::ConstexprStaticMutableStructMember.b); 64 use(ConstStaticexpr); 65 use(ConstExpr); 66 use(ConstexprStaticStruct.b); 67 use(ConstexprStaticMutableStruct.b); 68 } 69