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