forked from OSchip/llvm-project
70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++2a %s -emit-llvm -o - | FileCheck %s
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// CHECK-DAG: @a = external thread_local global i32
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extern thread_local int a;
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// CHECK-DAG: @b = external thread_local global i32
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extern thread_local constinit int b;
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// CHECK-LABEL: define i32 @_Z1fv()
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// CHECK: call i32* @_ZTW1a()
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// CHECK: }
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int f() { return a; }
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// CHECK-LABEL: define linkonce_odr {{.*}} @_ZTW1a()
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// CHECK: br i1
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// CHECK: call void @_ZTH1a()
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// CHECK: }
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// CHECK-LABEL: define i32 @_Z1gv()
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// CHECK-NOT: call
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// CHECK: load i32, i32* @b
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// CHECK-NOT: call
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// CHECK: }
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int g() { return b; }
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// CHECK-NOT: define {{.*}} @_ZTW1b()
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extern thread_local int c;
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// CHECK-LABEL: define i32 @_Z1hv()
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// CHECK: call i32* @_ZTW1c()
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// CHECK: load i32, i32* %
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// CHECK: }
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int h() { return c; }
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// Note: use of 'c' does not trigger initialization of 'd', because 'c' has a
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// constant initializer.
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// CHECK-LABEL: define weak_odr {{.*}} @_ZTW1c()
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// CHECK-NOT: br i1
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// CHECK-NOT: call
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// CHECK: ret i32* @c
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// CHECK: }
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thread_local int c = 0;
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int d_init();
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// CHECK: define {{.*}}[[D_INIT:@__cxx_global_var_init[^(]*]](
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// CHECK: call {{.*}} @_Z6d_initv()
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thread_local int d = d_init();
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struct Destructed {
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int n = 0;
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~Destructed();
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};
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extern thread_local constinit Destructed e;
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// CHECK-LABEL: define i32 @_Z1iv()
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// CHECK: call {{.*}}* @_ZTW1e()
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// CHECK: }
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int i() { return e.n; }
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// CHECK: define {{.*}}[[E2_INIT:@__cxx_global_var_init[^(]*]](
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// CHECK: call {{.*}} @__cxa_thread_atexit({{.*}} @_ZN10DestructedD1Ev {{.*}} @e2
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thread_local constinit Destructed e2;
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// CHECK-LABEL: define {{.*}}__tls_init
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// CHECK: call {{.*}} [[D_INIT]]
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// CHECK: call {{.*}} [[E2_INIT]]
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