1 // RUN: %clang_cc1 %s -std=c++1y -triple=i686-pc-win32 -fms-compatibility-version=19.25 -emit-llvm -o - | FileCheck %s 2 // RUN: %clang_cc1 %s -std=c++1y -triple=i686-pc-win32 -fms-compatibility-version=19.20 -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-LEGACY 3 // RUN: %clang_cc1 %s -std=c++1y -triple=i686-pc-win32 -fms-compatibility-version=19.25 -fno-ms-tls-guards -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-NO-GUARDS 4 // RUN: %clang_cc1 %s -std=c++1y -triple=i686-pc-win32 -fms-compatibility-version=19.25 -ftls-model=local-dynamic -emit-llvm -o - | FileCheck %s -check-prefix=CHECK-LD 5 6 struct A { 7 A(); 8 ~A(); 9 }; 10 11 // CHECK-DAG: $"??$a@X@@3UA@@A" = comdat any 12 // CHECK-DAG: @"??$a@X@@3UA@@A" = linkonce_odr dso_local thread_local global %struct.A zeroinitializer, comdat, align 1 13 // CHECK-DAG: @"??__E?$a@X@@YAXXZ$initializer$" = internal constant ptr @"??__E?$a@X@@YAXXZ", section ".CRT$XDU", comdat($"??$a@X@@3UA@@A") 14 // CHECK-LD-DAG: $"??$a@X@@3UA@@A" = comdat any 15 // CHECK-LD-DAG: @"??$a@X@@3UA@@A" = linkonce_odr dso_local thread_local(localdynamic) global %struct.A zeroinitializer, comdat, align 1 16 // CHECK-LD-DAG: @"??__E?$a@X@@YAXXZ$initializer$" = internal constant ptr @"??__E?$a@X@@YAXXZ", section ".CRT$XDU", comdat($"??$a@X@@3UA@@A") 17 template <typename T> 18 thread_local A a = A(); 19 20 // CHECK-DAG: @"?b@@3UA@@A" = dso_local thread_local global %struct.A zeroinitializer, align 1 21 // CHECK-DAG: @"__tls_init$initializer$" = internal constant ptr @__tls_init, section ".CRT$XDU" 22 // CHECK-DAG: @__tls_guard = external dso_local thread_local global i8 23 // CHECK-LD-DAG: @"?b@@3UA@@A" = dso_local thread_local(localdynamic) global %struct.A zeroinitializer, align 1 24 // CHECK-LD-DAG: @"__tls_init$initializer$" = internal constant ptr @__tls_init, section ".CRT$XDU" 25 // CHECK-LD-DAG: @__tls_guard = external dso_local thread_local global i8 26 // CHECK-LEGACY-NOT: @__tls_guard = external dso_local thread_local global i8 27 // CHECK-NO-GUARDS-NOT: @__tls_guard = external dso_local thread_local global i8 28 thread_local A b; 29 30 // CHECK-LABEL: declare dso_local void @__dyn_tls_on_demand_init() 31 // CHECK-LD-LABEL: declare dso_local void @__dyn_tls_on_demand_init() 32 // CHECK-LEGACY-NOT: declare dso_local void @__dyn_tls_on_demand_init() 33 // CHECK-NO-GUARDS-NOT: declare dso_local void @__dyn_tls_on_demand_init() 34 35 // CHECK-LABEL: define dso_local void @"?f@@YA?AUA@@XZ"(ptr dead_on_unwind noalias writable sret(%struct.A) align 1 %agg.result) 36 // CHECK: call void @__dyn_tls_on_demand_init() 37 // CHECK-LD-LABEL: define dso_local void @"?f@@YA?AUA@@XZ"(ptr dead_on_unwind noalias writable sret(%struct.A) align 1 %agg.result) 38 // CHECK-LD: call void @__dyn_tls_on_demand_init() 39 // CHECK-LEGACY-NOT: call void @__dyn_tls_on_demand_init() 40 // CHECK-NO-GUARDS-NOT: call void @__dyn_tls_on_demand_init() 41 42 thread_local A &c = b; 43 thread_local A &d = c; 44 45 A f() { 46 (void)a<void>; 47 (void)b; 48 return c; 49 } 50 51 // CHECK-LABEL: define dso_local noundef i32 @"?g@@YAHXZ"() 52 // CHECK-NOT: call void @__dyn_tls_on_demand_init() 53 // CHECK-LD-LABEL: define dso_local noundef i32 @"?g@@YAHXZ"() 54 // CHECK-LD-NOT: call void @__dyn_tls_on_demand_init() 55 56 thread_local int e = 2; 57 58 int g() { 59 return e; 60 } 61 62 // CHECK-LABEL: define internal void @__tls_init() 63 // CHECK: call void @"??__Eb@@YAXXZ" 64 // CHECK-LD-LABEL: define internal void @__tls_init() 65 // CHECK-LD: call void @"??__Eb@@YAXXZ" 66 67 // CHECK: !llvm.linker.options = !{![[dyn_tls_init:[0-9]+]]} 68 // CHECK: ![[dyn_tls_init]] = !{!"/include:___dyn_tls_init@12"} 69 // CHECK-LD: !llvm.linker.options = !{![[dyn_tls_init:[0-9]+]]} 70 // CHECK-LD: ![[dyn_tls_init]] = !{!"/include:___dyn_tls_init@12"} 71