127 lines · cpp
1// RUN: %clang_cc1 -emit-llvm -std=c++1z %s -o - -triple=x86_64-linux-gnu | FileCheck %s2 3struct S { S(); ~S(); };4 5// CHECK-LABEL: define {{.*}}global_var_init6// CHECK-NOT: br7// CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @global)8S global;9 10// CHECK-LABEL: define {{.*}}global_var_init11// FIXME: Do we really need thread-safe initialization here? We don't run12// global ctors on multiple threads. (If we were to do so, we'd need thread-safe13// init for B<int>::member and B<int>::inline_member too.)14// CHECK: load atomic i8, ptr @_ZGV13inline_global acquire, align 815// CHECK: icmp eq i8 {{.*}}, 016// CHECK: br i117// CHECK-NOT: !prof18// CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @inline_global)19inline S inline_global;20 21// CHECK-LABEL: define {{.*}}global_var_init22// CHECK-NOT: br23// CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @thread_local_global)24thread_local S thread_local_global;25 26// CHECK-LABEL: define {{.*}}global_var_init27// CHECK: load i8, ptr @_ZGV26thread_local_inline_global28// CHECK: icmp eq i8 {{.*}}, 029// CHECK: br i130// CHECK-NOT: !prof31// CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @thread_local_inline_global)32thread_local inline S thread_local_inline_global;33 34struct A {35 static S member;36 static thread_local S thread_local_member;37 38 // CHECK-LABEL: define {{.*}}global_var_init39 // CHECK: load atomic i8, ptr @_ZGVN1A13inline_memberE acquire, align 840 // CHECK: icmp eq i8 {{.*}}, 041 // CHECK: br i142 // CHECK-NOT: !prof43 // CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @_ZN1A13inline_memberE)44 static inline S inline_member;45 46 // CHECK-LABEL: define {{.*}}global_var_init47 // CHECK: load i8, ptr @_ZGVN1A26thread_local_inline_memberE48 // CHECK: icmp eq i8 {{.*}}, 049 // CHECK: br i150 // CHECK-NOT: !prof51 // CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @_ZN1A26thread_local_inline_memberE)52 static thread_local inline S thread_local_inline_member;53};54 55// CHECK-LABEL: define{{.*}} void @_Z1fv()56void f() {57 // CHECK: load atomic i8, ptr @_ZGVZ1fvE12static_local acquire, align 858 // CHECK: icmp eq i8 {{.*}}, 059 // CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_LOCAL:[0-9]*]]60 static S static_local;61 62 // CHECK: load i8, ptr @_ZGVZ1fvE19static_thread_local,63 // CHECK: icmp eq i8 {{.*}}, 064 // CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_THREAD_LOCAL:[0-9]*]]65 static thread_local S static_thread_local;66}67 68// CHECK-LABEL: define {{.*}}global_var_init69// CHECK-NOT: br70// CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @_ZN1A6memberE)71S A::member;72 73// CHECK-LABEL: define {{.*}}global_var_init74// CHECK-NOT: br75// CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @_ZN1A19thread_local_memberE)76thread_local S A::thread_local_member;77 78template <typename T> struct B {79 // CHECK-LABEL: define {{.*}}global_var_init80 // CHECK: load i8, ptr @_ZGVN1BIiE6memberE81 // CHECK: icmp eq i8 {{.*}}, 082 // CHECK: br i183 // CHECK-NOT: !prof84 // CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @_ZN1BIiE6memberE)85 static S member;86 87 // CHECK-LABEL: define {{.*}}global_var_init88 // CHECK: load i8, ptr @_ZGVN1BIiE13inline_memberE89 // CHECK: icmp eq i8 {{.*}}, 090 // CHECK: br i191 // CHECK-NOT: !prof92 // CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @_ZN1BIiE13inline_memberE)93 static inline S inline_member;94 95 // CHECK-LABEL: define {{.*}}global_var_init96 // CHECK: load i8, ptr @_ZGVN1BIiE19thread_local_memberE97 // CHECK: icmp eq i8 {{.*}}, 098 // CHECK: br i199 // CHECK-NOT: !prof100 // CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @_ZN1BIiE19thread_local_memberE)101 static thread_local S thread_local_member;102 103 // CHECK-LABEL: define {{.*}}global_var_init104 // CHECK: load i8, ptr @_ZGVN1BIiE26thread_local_inline_memberE105 // CHECK: icmp eq i8 {{.*}}, 0106 // CHECK: br i1107 // CHECK-NOT: !prof108 // CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} @_ZN1BIiE26thread_local_inline_memberE)109 static thread_local inline S thread_local_inline_member;110};111template<typename T> S B<T>::member;112template<typename T> thread_local S B<T>::thread_local_member;113 114template<typename ...T> void use(T &...);115void use_b() {116 use(B<int>::member, B<int>::inline_member, B<int>::thread_local_member,117 B<int>::thread_local_inline_member);118}119 120// CHECK-LABEL: define {{.*}}tls_init()121// CHECK: load i8, ptr @__tls_guard, align 1122// CHECK: icmp eq i8 {{.*}}, 0123// CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_THREAD_LOCAL]]124 125// CHECK-DAG: ![[WEIGHTS_THREAD_LOCAL]] = !{!"branch_weights", i32 1, i32 1023}126// CHECK-DAG: ![[WEIGHTS_LOCAL]] = !{!"branch_weights", i32 1, i32 1048575}127