1cd4d6d71SRichard Smith // RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s 2cd4d6d71SRichard Smith 3cd4d6d71SRichard Smith // PR48030 4cd4d6d71SRichard Smith 5cd4d6d71SRichard Smith template<typename T> struct TLS { static thread_local T *mData; }; non_constant_initializer()6cd4d6d71SRichard Smithinline decltype(nullptr) non_constant_initializer() { return nullptr; } 7cd4d6d71SRichard Smith template<typename T> thread_local T *TLS<T>::mData = non_constant_initializer(); 8cd4d6d71SRichard Smith struct S {}; current()9cd4d6d71SRichard SmithS *current() { return TLS<S>::mData; }; 10cd4d6d71SRichard Smith 11cd4d6d71SRichard Smith // CHECK-DAG: @_ZN3TLSI1SE5mDataE = linkonce_odr thread_local global {{.*}}, comdat, 12cd4d6d71SRichard Smith // CHECK-DAG: @_ZGVN3TLSI1SE5mDataE = linkonce_odr thread_local global {{.*}}, comdat($_ZN3TLSI1SE5mDataE), 13cd4d6d71SRichard Smith // CHECK-DAG: @_ZTHN3TLSI1SE5mDataE = linkonce_odr alias {{.*}} @__cxx_global_var_init 14cd4d6d71SRichard Smith 15cd4d6d71SRichard Smith // CHECK-LABEL: define {{.*}} @_Z7currentv() 16cd4d6d71SRichard Smith // CHECK: call {{.*}} @_ZTWN3TLSI1SE5mDataE() 17cd4d6d71SRichard Smith 18cd4d6d71SRichard Smith // CHECK-LABEL: define weak_odr hidden {{.*}} @_ZTWN3TLSI1SE5mDataE() {{.*}} comdat { 19cd4d6d71SRichard Smith // CHECK: call void @_ZTHN3TLSI1SE5mDataE() 20*b6965f72SAlexander Shaposhnikov // CHECK: [[TLSmData_ADDR:%[^ ]+]] = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_ZN3TLSI1SE5mDataE) 21bacdf80fSChuanqi Xu // CHECK: ret {{.*}} [[TLSmData_ADDR]] 22cd4d6d71SRichard Smith 23cd4d6d71SRichard Smith // Unlike for a global, the global initialization function must not be in a 24cd4d6d71SRichard Smith // COMDAT with the variable, because it is referenced from the _ZTH function 25cd4d6d71SRichard Smith // which is outside that COMDAT. 26cd4d6d71SRichard Smith // 27cd4d6d71SRichard Smith // CHECK-NOT: define {{.*}} @__cxx_global_var_init{{.*}}comdat 28