1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s 2 3 // CHECK: @_ZN5test11A1aE = constant i32 10, align 4 4 // CHECK: @_ZN5test212_GLOBAL__N_11AIiE1xE = internal global i32 0, align 4 5 // CHECK: @_ZN5test31AIiE1xE = weak_odr global i32 0, align 4 6 // CHECK: @_ZGVN5test31AIiE1xE = weak_odr global i64 0 7 8 // PR5564. 9 namespace test1 { 10 struct A { 11 static const int a = 10; 12 }; 13 14 const int A::a; 15 16 struct S { 17 static int i; 18 }; 19 f()20 void f() { 21 int a = S::i; 22 } 23 } 24 25 // Test that we don't use guards for initializing template static data 26 // members with internal linkage. 27 namespace test2 { 28 int foo(); 29 30 namespace { 31 template <class T> struct A { 32 static int x; 33 }; 34 35 template <class T> int A<T>::x = foo(); 36 template struct A<int>; 37 } 38 39 // CHECK: define internal void @__cxx_global_var_init() 40 // CHECK: [[TMP:%.*]] = call i32 @_ZN5test23fooEv() 41 // CHECK-NEXT: store i32 [[TMP]], i32* @_ZN5test212_GLOBAL__N_11AIiE1xE, align 4 42 // CHECK-NEXT: ret void 43 } 44 45 // Test that we don't use threadsafe statics when initializing 46 // template static data members. 47 namespace test3 { 48 int foo(); 49 50 template <class T> struct A { 51 static int x; 52 }; 53 54 template <class T> int A<T>::x = foo(); 55 template struct A<int>; 56 57 // CHECK: define internal void @__cxx_global_var_init1() 58 // CHECK: [[GUARDBYTE:%.*]] = load i8* bitcast (i64* @_ZGVN5test31AIiE1xE to i8*) 59 // CHECK-NEXT: [[UNINITIALIZED:%.*]] = icmp eq i8 [[GUARDBYTE]], 0 60 // CHECK-NEXT: br i1 [[UNINITIALIZED]] 61 // CHECK: [[TMP:%.*]] = call i32 @_ZN5test33fooEv() 62 // CHECK-NEXT: store i32 [[TMP]], i32* @_ZN5test31AIiE1xE, align 4 63 // CHECK-NEXT: store i64 1, i64* @_ZGVN5test31AIiE1xE 64 // CHECK-NEXT: br label 65 // CHECK: ret void 66 } 67