| // RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++2a %s -emit-llvm -o - | FileCheck %s |
| |
| // CHECK-DAG: @a = external thread_local global i32 |
| extern thread_local int a; |
| |
| // CHECK-DAG: @b = external thread_local global i32 |
| extern thread_local constinit int b; |
| |
| // CHECK-LABEL: define i32 @_Z1fv() |
| // CHECK: call i32* @_ZTW1a() |
| // CHECK: } |
| int f() { return a; } |
| |
| // CHECK-LABEL: define linkonce_odr {{.*}} @_ZTW1a() |
| // CHECK: br i1 |
| // CHECK: call void @_ZTH1a() |
| // CHECK: } |
| |
| // CHECK-LABEL: define i32 @_Z1gv() |
| // CHECK-NOT: call |
| // CHECK: load i32, i32* @b |
| // CHECK-NOT: call |
| // CHECK: } |
| int g() { return b; } |
| |
| // CHECK-NOT: define {{.*}} @_ZTW1b() |
| |
| extern thread_local int c; |
| |
| // CHECK-LABEL: define i32 @_Z1hv() |
| // CHECK: call i32* @_ZTW1c() |
| // CHECK: load i32, i32* % |
| // CHECK: } |
| int h() { return c; } |
| |
| // Note: use of 'c' does not trigger initialization of 'd', because 'c' has a |
| // constant initializer. |
| // CHECK-LABEL: define weak_odr {{.*}} @_ZTW1c() |
| // CHECK-NOT: br i1 |
| // CHECK-NOT: call |
| // CHECK: ret i32* @c |
| // CHECK: } |
| |
| thread_local int c = 0; |
| |
| int d_init(); |
| |
| // CHECK: define {{.*}}[[D_INIT:@__cxx_global_var_init[^(]*]]( |
| // CHECK: call {{.*}} @_Z6d_initv() |
| thread_local int d = d_init(); |
| |
| struct Destructed { |
| int n; |
| ~Destructed(); |
| }; |
| |
| extern thread_local constinit Destructed e; |
| // CHECK-LABEL: define i32 @_Z1iv() |
| // CHECK: call {{.*}}* @_ZTW1e() |
| // CHECK: } |
| int i() { return e.n; } |
| |
| // CHECK: define {{.*}}[[E2_INIT:@__cxx_global_var_init[^(]*]]( |
| // CHECK: call {{.*}} @__cxa_thread_atexit({{.*}} @_ZN10DestructedD1Ev {{.*}} @e2 |
| thread_local constinit Destructed e2; |
| |
| // CHECK-LABEL: define {{.*}}__tls_init |
| // CHECK: call {{.*}} [[D_INIT]] |
| // CHECK: call {{.*}} [[E2_INIT]] |
