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57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
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// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s
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int g();
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// CHECK: @_ZZ1fvE1n = internal thread_local global i32 0
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// CHECK: @_ZGVZ1fvE1n = internal thread_local global i8 0
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// CHECK: @_ZZ8tls_dtorvE1s = internal thread_local global
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// CHECK: @_ZGVZ8tls_dtorvE1s = internal thread_local global i8 0
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// CHECK: @_ZZ8tls_dtorvE1t = internal thread_local global
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// CHECK: @_ZGVZ8tls_dtorvE1t = internal thread_local global i8 0
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// CHECK: @_ZZ8tls_dtorvE1u = internal thread_local global
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// CHECK: @_ZGVZ8tls_dtorvE1u = internal thread_local global i8 0
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// CHECK: @_ZGRZ8tls_dtorvE1u = internal thread_local global
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// CHECK: define i32 @_Z1fv()
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int f() {
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// CHECK: %[[GUARD:.*]] = load i8* @_ZGVZ1fvE1n, align 1
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// CHECK: %[[NEED_INIT:.*]] = icmp eq i8 %[[GUARD]], 0
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// CHECK: br i1 %[[NEED_INIT]]
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// CHECK: %[[CALL:.*]] = call i32 @_Z1gv()
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// CHECK: store i32 %[[CALL]], i32* @_ZZ1fvE1n, align 4
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// CHECK: store i8 1, i8* @_ZGVZ1fvE1n
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// CHECK: br label
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static thread_local int n = g();
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// CHECK: load i32* @_ZZ1fvE1n, align 4
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return n;
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}
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struct S { S(); ~S(); };
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struct T { ~T(); };
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// CHECK: define void @_Z8tls_dtorv()
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void tls_dtor() {
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// CHECK: load i8* @_ZGVZ8tls_dtorvE1s
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// CHECK: call void @_ZN1SC1Ev(%struct.S* @_ZZ8tls_dtorvE1s)
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// CHECK: call i32 @__cxa_thread_atexit({{.*}}@_ZN1SD1Ev {{.*}} @_ZZ8tls_dtorvE1s{{.*}} @__dso_handle
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// CHECK: store i8 1, i8* @_ZGVZ8tls_dtorvE1s
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static thread_local S s;
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// CHECK: load i8* @_ZGVZ8tls_dtorvE1t
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// CHECK-NOT: _ZN1T
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// CHECK: call i32 @__cxa_thread_atexit({{.*}}@_ZN1TD1Ev {{.*}}@_ZZ8tls_dtorvE1t{{.*}} @__dso_handle
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// CHECK: store i8 1, i8* @_ZGVZ8tls_dtorvE1t
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static thread_local T t;
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// CHECK: load i8* @_ZGVZ8tls_dtorvE1u
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// CHECK: call void @_ZN1SC1Ev(%struct.S* @_ZGRZ8tls_dtorvE1u)
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// CHECK: call i32 @__cxa_thread_atexit({{.*}}@_ZN1SD1Ev {{.*}} @_ZGRZ8tls_dtorvE1u{{.*}} @__dso_handle
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// CHECK: store i8 1, i8* @_ZGVZ8tls_dtorvE1u
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static thread_local const S &u = S();
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}
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