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c84ed6a336
and only consider using __cxa_atexit in the Itanium logic. The default logic is to use atexit(). Emit "guarded" initializers in Microsoft mode unconditionally. This is definitely not correct, but it's closer to correct than just not emitting the initializer. Based on a patch by Timur Iskhodzhanov! llvm-svn: 155894
53 lines
1.2 KiB
C++
53 lines
1.2 KiB
C++
// RUN: %clang_cc1 -emit-llvm %s -o - -cxx-abi microsoft -triple=i386-pc-win32 | FileCheck %s
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struct S {
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S() {}
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~S() {}
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} s;
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// CHECK: define internal void [[INIT_s:@.*global_var.*]] nounwind
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// CHECK: call void @"\01??0S@@QAE@XZ"
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// CHECK: call i32 @atexit(void ()* @"__dtor_\01?s@@3US@@A")
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// CHECK: ret void
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// CHECK: define internal void @"__dtor_\01?s@@3US@@A"() nounwind {
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// CHECK: call void @"\01??1S@@QAE@XZ"
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// CHECK: ret void
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// Force WeakODRLinkage by using templates
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class A {
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public:
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A() {}
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~A() {}
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};
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template<typename T>
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class B {
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public:
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static A foo;
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};
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template<typename T> A B<T>::foo;
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void force_usage() {
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(void)B<int>::foo; // (void) - force usage
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}
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// CHECK: define internal void [[INIT_foo:@.*global_var.*]] nounwind
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// CHECK: call void @"\01??0A@@QAE@XZ"
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// CHECK: call i32 @atexit(void ()* [[FOO_DTOR:@"__dtor_.*foo@.*]])
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// CHECK: ret void
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// CHECK: define linkonce_odr void @"\01??0A@@QAE@XZ"
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// CHECK: define linkonce_odr void @"\01??1A@@QAE@XZ"
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// CHECK: define internal void [[FOO_DTOR]]
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// CHECK: call void @"\01??1A@@QAE@XZ"{{.*}}foo
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// CHECK: ret void
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// CHECK: define internal void @_GLOBAL__I_a() nounwind {
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// CHECK: call void [[INIT_s]]
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// CHECK: call void [[INIT_foo]]
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// CHECK: ret void
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