127 lines
4.5 KiB
C++
127 lines
4.5 KiB
C++
// RUN: %clang_cc1 -emit-llvm -std=c++1z %s -o - -triple=x86_64-linux-gnu | FileCheck %s
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struct S { S(); ~S(); };
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK-NOT: br
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @global)
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S global;
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// CHECK-LABEL: define {{.*}}global_var_init
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// FIXME: Do we really need thread-safe initialization here? We don't run
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// global ctors on multiple threads. (If we were to do so, we'd need thread-safe
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// init for B<int>::member and B<int>::inline_member too.)
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// CHECK: load atomic i8, i8* bitcast (i64* @_ZGV13inline_global to i8*) acquire,
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @inline_global)
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inline S inline_global;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK-NOT: br
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @thread_local_global)
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thread_local S thread_local_global;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGV26thread_local_inline_global to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @thread_local_inline_global)
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thread_local inline S thread_local_inline_global;
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struct A {
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static S member;
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static thread_local S thread_local_member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load atomic i8, i8* bitcast (i64* @_ZGVN1A13inline_memberE to i8*) acquire,
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @_ZN1A13inline_memberE)
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static inline S inline_member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1A26thread_local_inline_memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @_ZN1A26thread_local_inline_memberE)
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static thread_local inline S thread_local_inline_member;
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};
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// CHECK-LABEL: define void @_Z1fv()
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void f() {
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// CHECK: load atomic i8, i8* bitcast (i64* @_ZGVZ1fvE12static_local to i8*) acquire,
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_LOCAL:[0-9]*]]
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static S static_local;
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// CHECK: load i8, i8* @_ZGVZ1fvE19static_thread_local,
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_THREAD_LOCAL:[0-9]*]]
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static thread_local S static_thread_local;
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}
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK-NOT: br
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @_ZN1A6memberE)
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S A::member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK-NOT: br
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @_ZN1A19thread_local_memberE)
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thread_local S A::thread_local_member;
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template <typename T> struct B {
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1BIiE6memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @_ZN1BIiE6memberE)
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static S member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1BIiE13inline_memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @_ZN1BIiE13inline_memberE)
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static inline S inline_member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1BIiE19thread_local_memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @_ZN1BIiE19thread_local_memberE)
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static thread_local S thread_local_member;
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// CHECK-LABEL: define {{.*}}global_var_init
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// CHECK: load i8, i8* bitcast (i64* @_ZGVN1BIiE26thread_local_inline_memberE to i8*)
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1
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// CHECK-NOT: !prof
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// CHECK: call void @_ZN1SC1Ev({{.*}}* @_ZN1BIiE26thread_local_inline_memberE)
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static thread_local inline S thread_local_inline_member;
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};
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template<typename T> S B<T>::member;
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template<typename T> thread_local S B<T>::thread_local_member;
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template<typename ...T> void use(T &...);
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void use_b() {
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use(B<int>::member, B<int>::inline_member, B<int>::thread_local_member,
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B<int>::thread_local_inline_member);
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}
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// CHECK-LABEL: define {{.*}}tls_init()
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// CHECK: load i8, i8* @__tls_guard, align 1
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// CHECK: icmp eq i8 {{.*}}, 0
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// CHECK: br i1 {{.*}}, !prof ![[WEIGHTS_THREAD_LOCAL]]
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// CHECK-DAG: ![[WEIGHTS_THREAD_LOCAL]] = !{!"branch_weights", i32 1, i32 1023}
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// CHECK-DAG: ![[WEIGHTS_LOCAL]] = !{!"branch_weights", i32 1, i32 1048575}
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