| // RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s |
| // RUN: %clang_cc1 -std=c++11 -femulated-tls -emit-llvm %s -o - \ |
| // RUN: -triple x86_64-linux-gnu 2>&1 | FileCheck --check-prefix=CHECK %s |
| |
| int f(); |
| int g(); |
| |
| // CHECK: @a = thread_local global i32 0 |
| thread_local int a = f(); |
| extern thread_local int b; |
| // CHECK: @c = global i32 0 |
| int c = b; |
| // CHECK: @_ZL1d = internal thread_local global i32 0 |
| static thread_local int d = g(); |
| |
| struct U { static thread_local int m; }; |
| // CHECK: @_ZN1U1mE = thread_local global i32 0 |
| thread_local int U::m = f(); |
| |
| template<typename T> struct V { static thread_local int m; }; |
| template<typename T> thread_local int V<T>::m = g(); |
| |
| // CHECK: @e = global i32 0 |
| int e = V<int>::m; |
| |
| // CHECK: @_ZN1VIiE1mE = linkonce_odr thread_local global i32 0 |
| |
| // CHECK: @_ZZ1fvE1n = internal thread_local global i32 0 |
| |
| // CHECK: @_ZGVZ1fvE1n = internal thread_local global i8 0 |
| |
| // CHECK: @_ZZ8tls_dtorvE1s = internal thread_local global |
| // CHECK: @_ZGVZ8tls_dtorvE1s = internal thread_local global i8 0 |
| |
| // CHECK: @_ZZ8tls_dtorvE1t = internal thread_local global |
| // CHECK: @_ZGVZ8tls_dtorvE1t = internal thread_local global i8 0 |
| |
| // CHECK: @_ZZ8tls_dtorvE1u = internal thread_local global |
| // CHECK: @_ZGVZ8tls_dtorvE1u = internal thread_local global i8 0 |
| // CHECK: @_ZGRZ8tls_dtorvE1u_ = internal thread_local global |
| |
| // CHECK: @_ZGVN1VIiE1mE = linkonce_odr thread_local global i64 0 |
| |
| // CHECK: @__tls_guard = internal thread_local global i8 0 |
| |
| // CHECK: @llvm.global_ctors = appending global {{.*}} @[[GLOBAL_INIT:[^ ]*]] |
| |
| // CHECK: @_ZTH1a = alias void (), void ()* @__tls_init |
| // CHECK: @_ZTHL1d = internal alias void (), void ()* @__tls_init |
| // CHECK: @_ZTHN1U1mE = alias void (), void ()* @__tls_init |
| // CHECK: @_ZTHN1VIiE1mE = linkonce_odr alias void (), void ()* @__tls_init |
| |
| |
| // Individual variable initialization functions: |
| |
| // CHECK: define {{.*}} @[[A_INIT:.*]]() |
| // CHECK: call i32 @_Z1fv() |
| // CHECK-NEXT: store i32 {{.*}}, i32* @a, align 4 |
| |
| // CHECK-LABEL: define i32 @_Z1fv() |
| int f() { |
| // CHECK: %[[GUARD:.*]] = load i8, i8* @_ZGVZ1fvE1n, align 1 |
| // CHECK: %[[NEED_INIT:.*]] = icmp eq i8 %[[GUARD]], 0 |
| // CHECK: br i1 %[[NEED_INIT]] |
| |
| // CHECK: %[[CALL:.*]] = call i32 @_Z1gv() |
| // CHECK: store i32 %[[CALL]], i32* @_ZZ1fvE1n, align 4 |
| // CHECK: store i8 1, i8* @_ZGVZ1fvE1n |
| // CHECK: br label |
| static thread_local int n = g(); |
| |
| // CHECK: load i32, i32* @_ZZ1fvE1n, align 4 |
| return n; |
| } |
| |
| // CHECK: define {{.*}} @[[C_INIT:.*]]() |
| // CHECK: call i32* @_ZTW1b() |
| // CHECK-NEXT: load i32, i32* %{{.*}}, align 4 |
| // CHECK-NEXT: store i32 %{{.*}}, i32* @c, align 4 |
| |
| // CHECK-LABEL: define weak_odr hidden i32* @_ZTW1b() |
| // CHECK: br i1 icmp ne (void ()* @_ZTH1b, void ()* null), |
| // not null: |
| // CHECK: call void @_ZTH1b() |
| // CHECK: br label |
| // finally: |
| // CHECK: ret i32* @b |
| |
| // CHECK: define {{.*}} @[[D_INIT:.*]]() |
| // CHECK: call i32 @_Z1gv() |
| // CHECK-NEXT: store i32 %{{.*}}, i32* @_ZL1d, align 4 |
| |
| // CHECK: define {{.*}} @[[U_M_INIT:.*]]() |
| // CHECK: call i32 @_Z1fv() |
| // CHECK-NEXT: store i32 %{{.*}}, i32* @_ZN1U1mE, align 4 |
| |
| // CHECK: define {{.*}} @[[E_INIT:.*]]() |
| // CHECK: call i32* @_ZTWN1VIiE1mE() |
| // CHECK-NEXT: load i32, i32* %{{.*}}, align 4 |
| // CHECK-NEXT: store i32 %{{.*}}, i32* @e, align 4 |
| |
| // CHECK-LABEL: define weak_odr hidden i32* @_ZTWN1VIiE1mE() |
| // CHECK: call void @_ZTHN1VIiE1mE() |
| // CHECK: ret i32* @_ZN1VIiE1mE |
| |
| |
| struct S { S(); ~S(); }; |
| struct T { ~T(); }; |
| |
| // CHECK-LABEL: define void @_Z8tls_dtorv() |
| void tls_dtor() { |
| // CHECK: load i8, i8* @_ZGVZ8tls_dtorvE1s |
| // CHECK: call void @_ZN1SC1Ev(%struct.S* @_ZZ8tls_dtorvE1s) |
| // CHECK: call i32 @__cxa_thread_atexit({{.*}}@_ZN1SD1Ev {{.*}} @_ZZ8tls_dtorvE1s{{.*}} @__dso_handle |
| // CHECK: store i8 1, i8* @_ZGVZ8tls_dtorvE1s |
| static thread_local S s; |
| |
| // CHECK: load i8, i8* @_ZGVZ8tls_dtorvE1t |
| // CHECK-NOT: _ZN1T |
| // CHECK: call i32 @__cxa_thread_atexit({{.*}}@_ZN1TD1Ev {{.*}}@_ZZ8tls_dtorvE1t{{.*}} @__dso_handle |
| // CHECK: store i8 1, i8* @_ZGVZ8tls_dtorvE1t |
| static thread_local T t; |
| |
| // CHECK: load i8, i8* @_ZGVZ8tls_dtorvE1u |
| // CHECK: call void @_ZN1SC1Ev(%struct.S* @_ZGRZ8tls_dtorvE1u_) |
| // CHECK: call i32 @__cxa_thread_atexit({{.*}}@_ZN1SD1Ev {{.*}} @_ZGRZ8tls_dtorvE1u_{{.*}} @__dso_handle |
| // CHECK: store i8 1, i8* @_ZGVZ8tls_dtorvE1u |
| static thread_local const S &u = S(); |
| } |
| |
| // CHECK: declare i32 @__cxa_thread_atexit(void (i8*)*, i8*, i8*) |
| |
| // CHECK: define {{.*}} @_Z7PR15991v( |
| int PR15991() { |
| thread_local int n; |
| auto l = [] { return n; }; |
| return l(); |
| } |
| |
| struct PR19254 { |
| static thread_local int n; |
| int f(); |
| }; |
| // CHECK: define {{.*}} @_ZN7PR192541fEv( |
| int PR19254::f() { |
| // CHECK: call void @_ZTHN7PR192541nE( |
| return this->n; |
| } |
| |
| namespace { |
| thread_local int anon_i{1}; |
| } |
| void set_anon_i() { |
| anon_i = 2; |
| } |
| // CHECK-LABEL: define internal i32* @_ZTWN12_GLOBAL__N_16anon_iE() |
| |
| // CHECK: define {{.*}} @[[V_M_INIT:.*]]() |
| // CHECK: load i8, i8* bitcast (i64* @_ZGVN1VIiE1mE to i8*) |
| // CHECK: %[[V_M_INITIALIZED:.*]] = icmp eq i8 %{{.*}}, 0 |
| // CHECK: br i1 %[[V_M_INITIALIZED]], |
| // need init: |
| // CHECK: call i32 @_Z1gv() |
| // CHECK: store i32 %{{.*}}, i32* @_ZN1VIiE1mE, align 4 |
| // CHECK: store i64 1, i64* @_ZGVN1VIiE1mE |
| // CHECK: br label |
| |
| // CHECK: define {{.*}}@[[GLOBAL_INIT:.*]]() |
| // CHECK: call void @[[C_INIT]]() |
| // CHECK: call void @[[E_INIT]]() |
| |
| |
| // CHECK: define {{.*}}@__tls_init() |
| // CHECK: load i8, i8* @__tls_guard |
| // CHECK: %[[NEED_TLS_INIT:.*]] = icmp eq i8 %{{.*}}, 0 |
| // CHECK: store i8 1, i8* @__tls_guard |
| // CHECK: br i1 %[[NEED_TLS_INIT]], |
| // init: |
| // CHECK: call void @[[A_INIT]]() |
| // CHECK: call void @[[D_INIT]]() |
| // CHECK: call void @[[U_M_INIT]]() |
| // CHECK: call void @[[V_M_INIT]]() |
| |
| |
| // CHECK: define weak_odr hidden i32* @_ZTW1a() { |
| // CHECK: call void @_ZTH1a() |
| // CHECK: ret i32* @a |
| // CHECK: } |
| |
| |
| // CHECK: declare extern_weak void @_ZTH1b() |
| |
| |
| // CHECK-LABEL: define internal i32* @_ZTWL1d() |
| // CHECK: call void @_ZTHL1d() |
| // CHECK: ret i32* @_ZL1d |
| |
| // CHECK-LABEL: define weak_odr hidden i32* @_ZTWN1U1mE() |
| // CHECK: call void @_ZTHN1U1mE() |
| // CHECK: ret i32* @_ZN1U1mE |