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// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=x86_64-pc-windows-msvc -mconstructor-aliases -fexceptions -fcxx-exceptions | FileCheck -check-prefix WIN64 %s
extern "C" void might_throw();
// Simplify the generated IR with noexcept.
extern "C" void recover() noexcept(true);
extern "C" void handle_exception(void *e) noexcept(true);
extern "C" void catch_all() {
try {
might_throw();
} catch (...) {
recover();
}
}
// WIN64-LABEL: define void @catch_all()
// WIN64: invoke void @might_throw()
// WIN64-NEXT: to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
//
// WIN64: [[cont]]
// WIN64: br label %[[ret:[^ ]*]]
//
// WIN64: [[lpad]]
// WIN64: landingpad { i8*, i32 }
// WIN64-NEXT: catch i8* null
// WIN64: call void @llvm.eh.begincatch(i8* %{{[^,]*}}, i8* null)
// WIN64: call void @recover()
// WIN64: call void @llvm.eh.endcatch()
// WIN64: br label %[[ret]]
//
// WIN64: [[ret]]
// WIN64: ret void
extern "C" void catch_int() {
try {
might_throw();
} catch (int e) {
handle_exception(&e);
}
}
// WIN64-LABEL: define void @catch_int()
// WIN64: landingpad { i8*, i32 }
// WIN64: %[[e_i8:[^ ]*]] = bitcast i32* %[[e_addr:[^ ]*]] to i8*
// WIN64: call void @llvm.eh.begincatch(i8* %{{.*}}, i8* %[[e_i8]])
// WIN64: %[[e_i8:[^ ]*]] = bitcast i32* %[[e_addr]] to i8*
// WIN64: call void @handle_exception(i8* %[[e_i8]])
// WIN64: call void @llvm.eh.endcatch()
extern "C" void catch_int_unnamed() {
try {
might_throw();
} catch (int) {
}
}
// WIN64-LABEL: define void @catch_int_unnamed()
// WIN64: landingpad { i8*, i32 }
// WIN64: call void @llvm.eh.begincatch(i8* %{{.*}}, i8* null)
// WIN64: call void @llvm.eh.endcatch()
struct A {
A();
A(const A &o);
~A();
int a;
};
struct B : A {
B();
B(const B &o);
~B();
int b;
};
extern "C" void catch_a_byval() {
try {
might_throw();
} catch (A e) {
handle_exception(&e);
}
}
// WIN64-LABEL: define void @catch_a_byval()
// WIN64: %[[e_addr:[^ ]*]] = alloca %struct.A
// WIN64: landingpad { i8*, i32 }
// WIN64: %[[e_i8:[^ ]*]] = bitcast %struct.A* %[[e_addr]] to i8*
// WIN64: call void @llvm.eh.begincatch(i8* %{{.*}}, i8* %[[e_i8]])
// WIN64: %[[e_i8:[^ ]*]] = bitcast %struct.A* %[[e_addr]] to i8*
// WIN64: call void @handle_exception(i8* %[[e_i8]])
// WIN64: call void @llvm.eh.endcatch()
extern "C" void catch_a_ref() {
try {
might_throw();
} catch (A &e) {
handle_exception(&e);
}
}
// WIN64-LABEL: define void @catch_a_ref()
// WIN64: %[[e_addr:[^ ]*]] = alloca %struct.A*
// WIN64: landingpad { i8*, i32 }
// WIN64: %[[e_i8:[^ ]*]] = bitcast %struct.A** %[[e_addr]] to i8*
// WIN64: call void @llvm.eh.begincatch(i8* %{{.*}}, i8* %[[e_i8]])
// WIN64: %[[eptr:[^ ]*]] = load %struct.A*, %struct.A** %[[e_addr]]
// WIN64: %[[eptr_i8:[^ ]*]] = bitcast %struct.A* %[[eptr]] to i8*
// WIN64: call void @handle_exception(i8* %[[eptr_i8]])
// WIN64: call void @llvm.eh.endcatch()
extern "C" void fn_with_exc_spec() throw(int) {
might_throw();
}
// WIN64-LABEL: define void @fn_with_exc_spec()
// WIN64: call void @might_throw()
// WIN64-NEXT: ret void
extern "C" void catch_nested() {
try {
might_throw();
} catch (int) {
try {
might_throw();
} catch (int) {
might_throw();
}
}
}
// WIN64-LABEL: define void @catch_nested()
// WIN64: invoke void @might_throw()
// WIN64-NEXT: to label %[[cont1:[^ ]*]] unwind label %[[lp1:[^ ]*]]
// WIN64: [[cont1]]
//
// WIN64: [[lp1]]
// WIN64: landingpad { i8*, i32 }
// WIN64: call void @llvm.eh.begincatch(i8* %{{.*}}, i8* null)
// WIN64: invoke void @might_throw()
// WIN64-NEXT: to label %[[cont2:[^ ]*]] unwind label %[[lp2:[^ ]*]]
//
// WIN64: [[cont2]]
// WIN64-NEXT: br label %[[trycont:[^ ]*]]
//
// WIN64: [[lp2]]
// WIN64: landingpad { i8*, i32 }
// WIN64: call void @llvm.eh.begincatch(i8* %{{.*}}, i8* null)
// WIN64-NEXT: call void @might_throw()
// WIN64-NEXT: call void @llvm.eh.endcatch()
// WIN64-NEXT: br label %[[trycont]]
//
// WIN64: [[trycont]]
// WIN64: call void @llvm.eh.endcatch()
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