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-rw-r--r--clang/test/CodeGenCXX/destructors.cpp403
1 files changed, 403 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/destructors.cpp b/clang/test/CodeGenCXX/destructors.cpp
new file mode 100644
index 0000000..d9962e6
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+++ b/clang/test/CodeGenCXX/destructors.cpp
@@ -0,0 +1,403 @@
+// RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -emit-llvm -o - -mconstructor-aliases -fcxx-exceptions -fexceptions | FileCheck %s
+
+// CHECK: @_ZN5test01AD1Ev = alias {{.*}} @_ZN5test01AD2Ev
+// CHECK: @_ZN5test11MD2Ev = alias {{.*}} @_ZN5test11AD2Ev
+// CHECK: @_ZN5test11ND2Ev = alias {{.*}} @_ZN5test11AD2Ev
+// CHECK: @_ZN5test11OD2Ev = alias {{.*}} @_ZN5test11AD2Ev
+// CHECK: @_ZN5test11SD2Ev = alias bitcast {{.*}} @_ZN5test11AD2Ev
+
+// CHECK: @_ZN5test312_GLOBAL__N_11DD1Ev = alias internal {{.*}} @_ZN5test312_GLOBAL__N_11DD2Ev
+// CHECK: @_ZN5test312_GLOBAL__N_11DD2Ev = alias internal bitcast {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev
+// CHECK: @_ZN5test312_GLOBAL__N_11CD1Ev = alias internal {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev
+
+struct A {
+ int a;
+
+ ~A();
+};
+
+// Base with non-trivial destructor
+struct B : A {
+ ~B();
+};
+
+B::~B() { }
+
+// Field with non-trivial destructor
+struct C {
+ A a;
+
+ ~C();
+};
+
+C::~C() { }
+
+namespace PR7526 {
+ extern void foo();
+ struct allocator {
+ ~allocator() throw();
+ };
+
+ struct allocator_derived : allocator { };
+
+ // CHECK: define void @_ZN6PR75269allocatorD2Ev(%"struct.PR7526::allocator"* %this) unnamed_addr
+ // CHECK: call void @__cxa_call_unexpected
+ allocator::~allocator() throw() { foo(); }
+
+ // CHECK: define linkonce_odr void @_ZN6PR752617allocator_derivedD1Ev(%"struct.PR7526::allocator_derived"* %this) unnamed_addr
+ // CHECK-NOT: call void @__cxa_call_unexpected
+ // CHECK: }
+ void foo() {
+ allocator_derived ad;
+ }
+}
+
+// PR5084
+template<typename T>
+class A1 {
+ ~A1();
+};
+
+template<> A1<char>::~A1();
+
+// PR5529
+namespace PR5529 {
+ struct A {
+ ~A();
+ };
+
+ A::~A() { }
+ struct B : A {
+ virtual ~B();
+ };
+
+ B::~B() {}
+}
+
+// FIXME: there's a known problem in the codegen here where, if one
+// destructor throws, the remaining destructors aren't run. Fix it,
+// then make this code check for it.
+namespace test0 {
+ void foo();
+ struct VBase { ~VBase(); };
+ struct Base { ~Base(); };
+ struct Member { ~Member(); };
+
+ struct A : Base {
+ Member M;
+ ~A();
+ };
+
+ // The function-try-block won't suppress -mconstructor-aliases here.
+ A::~A() try { } catch (int i) {}
+
+// complete destructor alias tested above
+
+// CHECK: define void @_ZN5test01AD2Ev(%"struct.test0::A"* %this) unnamed_addr
+// CHECK: invoke void @_ZN5test06MemberD1Ev
+// CHECK: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]]
+// CHECK: invoke void @_ZN5test04BaseD2Ev
+// CHECK: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]]
+
+ struct B : Base, virtual VBase {
+ Member M;
+ ~B();
+ };
+ B::~B() try { } catch (int i) {}
+ // It will suppress the delegation optimization here, though.
+
+// CHECK: define void @_ZN5test01BD1Ev(%"struct.test0::B"* %this) unnamed_addr
+// CHECK: invoke void @_ZN5test06MemberD1Ev
+// CHECK: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]]
+// CHECK: invoke void @_ZN5test04BaseD2Ev
+// CHECK: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]]
+// CHECK: invoke void @_ZN5test05VBaseD2Ev
+// CHECK: unwind label [[VBASE_UNWIND:%[a-zA-Z0-9.]+]]
+
+// CHECK: define void @_ZN5test01BD2Ev(%"struct.test0::B"* %this, i8** %vtt) unnamed_addr
+// CHECK: invoke void @_ZN5test06MemberD1Ev
+// CHECK: unwind label [[MEM_UNWIND:%[a-zA-Z0-9.]+]]
+// CHECK: invoke void @_ZN5test04BaseD2Ev
+// CHECK: unwind label [[BASE_UNWIND:%[a-zA-Z0-9.]+]]
+}
+
+// Test base-class aliasing.
+namespace test1 {
+ struct A { ~A(); char ***m; }; // non-trivial destructor
+ struct B { ~B(); }; // non-trivial destructor
+ struct Empty { }; // trivial destructor, empty
+ struct NonEmpty { int x; }; // trivial destructor, non-empty
+
+ // There must be a definition in this translation unit for the alias
+ // optimization to apply.
+ A::~A() { delete m; }
+
+ struct M : A { ~M(); };
+ M::~M() {} // alias tested above
+
+ struct N : A, Empty { ~N(); };
+ N::~N() {} // alias tested above
+
+ struct O : Empty, A { ~O(); };
+ O::~O() {} // alias tested above
+
+ struct P : NonEmpty, A { ~P(); };
+ P::~P() {} // CHECK: define void @_ZN5test11PD2Ev(%"struct.test1::P"* %this) unnamed_addr
+
+ struct Q : A, B { ~Q(); };
+ Q::~Q() {} // CHECK: define void @_ZN5test11QD2Ev(%"struct.test1::Q"* %this) unnamed_addr
+
+ struct R : A { ~R(); };
+ R::~R() { A a; } // CHECK: define void @_ZN5test11RD2Ev(%"struct.test1::R"* %this) unnamed_addr
+
+ struct S : A { ~S(); int x; };
+ S::~S() {} // alias tested above
+
+ struct T : A { ~T(); B x; };
+ T::~T() {} // CHECK: define void @_ZN5test11TD2Ev(%"struct.test1::T"* %this) unnamed_addr
+
+ // The VTT parameter prevents this. We could still make this work
+ // for calling conventions that are safe against extra parameters.
+ struct U : A, virtual B { ~U(); };
+ U::~U() {} // CHECK: define void @_ZN5test11UD2Ev(%"struct.test1::U"* %this, i8** %vtt) unnamed_addr
+}
+
+// PR6471
+namespace test2 {
+ struct A { ~A(); char ***m; };
+ struct B : A { ~B(); };
+
+ B::~B() {}
+ // CHECK: define void @_ZN5test21BD2Ev(%"struct.test2::B"* %this) unnamed_addr
+ // CHECK: call void @_ZN5test21AD2Ev
+}
+
+// PR7142
+namespace test3 {
+ struct A { virtual ~A(); };
+ struct B { virtual ~B(); };
+ namespace { // internal linkage => deferred
+ struct C : A, B {}; // ~B() in D requires a this-adjustment thunk
+ struct D : C {}; // D::~D() is an alias to C::~C()
+ }
+
+ void test() {
+ new D; // Force emission of D's vtable
+ }
+
+ // Checked at top of file:
+ // @_ZN5test312_GLOBAL__N_11CD1Ev = alias internal {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev
+
+ // More checks at end of file.
+
+}
+
+namespace test4 {
+ struct A { ~A(); };
+
+ // CHECK: define void @_ZN5test43fooEv()
+ // CHECK: call void @_ZN5test41AD1Ev
+ // CHECK: ret void
+ void foo() {
+ {
+ A a;
+ goto failure;
+ }
+
+ failure:
+ return;
+ }
+
+ // CHECK: define void @_ZN5test43barEi(
+ // CHECK: [[X:%.*]] = alloca i32
+ // CHECK-NEXT: [[A:%.*]] = alloca
+ // CHECK: br label
+ // CHECK: [[TMP:%.*]] = load i32* [[X]]
+ // CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP]], 0
+ // CHECK-NEXT: br i1
+ // CHECK: call void @_ZN5test41AD1Ev(
+ // CHECK: br label
+ // CHECK: [[TMP:%.*]] = load i32* [[X]]
+ // CHECK: [[TMP2:%.*]] = add nsw i32 [[TMP]], -1
+ // CHECK: store i32 [[TMP2]], i32* [[X]]
+ // CHECK: br label
+ // CHECK: ret void
+ void bar(int x) {
+ for (A a; x; ) {
+ x--;
+ }
+ }
+}
+
+// PR7575
+namespace test5 {
+ struct A { ~A(); };
+
+ // CHECK: define void @_ZN5test53fooEv()
+ // CHECK: [[ELEMS:%.*]] = alloca [5 x [[A:%.*]]], align
+ // CHECK-NEXT: [[EXN:%.*]] = alloca i8*
+ // CHECK-NEXT: [[SEL:%.*]] = alloca i32
+ // CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [5 x [[A]]]* [[ELEMS]], i32 0, i32 0
+ // CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [[A]]* [[BEGIN]], i64 5
+ // CHECK-NEXT: br label
+ // CHECK: [[POST:%.*]] = phi [[A]]* [ [[END]], {{%.*}} ], [ [[ELT:%.*]], {{%.*}} ]
+ // CHECK-NEXT: [[ELT]] = getelementptr inbounds [[A]]* [[POST]], i64 -1
+ // CHECK-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[ELT]])
+ // CHECK: [[T0:%.*]] = icmp eq [[A]]* [[ELT]], [[BEGIN]]
+ // CHECK-NEXT: br i1 [[T0]],
+ // CHECK: ret void
+ // lpad
+ // CHECK: [[EMPTY:%.*]] = icmp eq [[A]]* [[BEGIN]], [[ELT]]
+ // CHECK-NEXT: br i1 [[EMPTY]]
+ // CHECK: [[AFTER:%.*]] = phi [[A]]* [ [[ELT]], {{%.*}} ], [ [[CUR:%.*]], {{%.*}} ]
+ // CHECK-NEXT: [[CUR:%.*]] = getelementptr inbounds [[A]]* [[AFTER]], i64 -1
+ // CHECK-NEXT: invoke void @_ZN5test51AD1Ev([[A]]* [[CUR]])
+ // CHECK: [[DONE:%.*]] = icmp eq [[A]]* [[CUR]], [[BEGIN]]
+ // CHECK-NEXT: br i1 [[DONE]],
+ void foo() {
+ A elems[5];
+ }
+}
+
+namespace test6 {
+ void opaque();
+
+ struct A { ~A(); };
+ template <unsigned> struct B { B(); ~B(); int _; };
+ struct C : B<0>, B<1>, virtual B<2>, virtual B<3> {
+ A x, y, z;
+
+ C();
+ ~C();
+ };
+
+ C::C() { opaque(); }
+ // CHECK: define void @_ZN5test61CC1Ev(%"struct.test6::C"* %this) unnamed_addr
+ // CHECK: call void @_ZN5test61BILj2EEC2Ev
+ // CHECK: invoke void @_ZN5test61BILj3EEC2Ev
+ // CHECK: invoke void @_ZN5test61BILj0EEC2Ev
+ // CHECK: invoke void @_ZN5test61BILj1EEC2Ev
+ // CHECK: invoke void @_ZN5test66opaqueEv
+ // CHECK: ret void
+ // FIXME: way too much EH cleanup code follows
+
+ C::~C() { opaque(); }
+ // CHECK: define void @_ZN5test61CD1Ev(%"struct.test6::C"* %this) unnamed_addr
+ // CHECK: invoke void @_ZN5test61CD2Ev
+ // CHECK: invoke void @_ZN5test61BILj3EED2Ev
+ // CHECK: call void @_ZN5test61BILj2EED2Ev
+ // CHECK: ret void
+ // CHECK: invoke void @_ZN5test61BILj3EED2Ev
+ // CHECK: invoke void @_ZN5test61BILj2EED2Ev
+
+ // CHECK: define void @_ZN5test61CD2Ev(%"struct.test6::C"* %this, i8** %vtt) unnamed_addr
+ // CHECK: invoke void @_ZN5test66opaqueEv
+ // CHECK: invoke void @_ZN5test61AD1Ev
+ // CHECK: invoke void @_ZN5test61AD1Ev
+ // CHECK: invoke void @_ZN5test61AD1Ev
+ // CHECK: invoke void @_ZN5test61BILj1EED2Ev
+ // CHECK: call void @_ZN5test61BILj0EED2Ev
+ // CHECK: ret void
+ // CHECK: invoke void @_ZN5test61AD1Ev
+ // CHECK: invoke void @_ZN5test61AD1Ev
+ // CHECK: invoke void @_ZN5test61AD1Ev
+ // CHECK: invoke void @_ZN5test61BILj1EED2Ev
+ // CHECK: invoke void @_ZN5test61BILj0EED2Ev
+}
+
+// PR 9197
+namespace test7 {
+ struct D { ~D(); };
+
+ struct A { ~A(); };
+ A::~A() { }
+
+ struct B : public A {
+ ~B();
+ D arr[1];
+ };
+
+ // Verify that this doesn't get emitted as an alias
+ // CHECK: define void @_ZN5test71BD2Ev(
+ // CHECK: invoke void @_ZN5test71DD1Ev(
+ // CHECK: call void @_ZN5test71AD2Ev(
+ B::~B() {}
+}
+
+// PR10467
+namespace test8 {
+ struct A { A(); ~A(); };
+
+ void die() __attribute__((noreturn));
+ void test() {
+ A x;
+ while (1) {
+ A y;
+ goto l;
+ }
+ l: die();
+ }
+
+ // CHECK: define void @_ZN5test84testEv()
+ // CHECK: [[X:%.*]] = alloca [[A:%.*]], align 1
+ // CHECK-NEXT: [[Y:%.*]] = alloca [[A:%.*]], align 1
+ // CHECK: call void @_ZN5test81AC1Ev([[A]]* [[X]])
+ // CHECK-NEXT: br label
+ // CHECK: invoke void @_ZN5test81AC1Ev([[A]]* [[Y]])
+ // CHECK: invoke void @_ZN5test81AD1Ev([[A]]* [[Y]])
+ // CHECK-NOT: switch
+ // CHECK: invoke void @_ZN5test83dieEv()
+ // CHECK: unreachable
+}
+
+// Checks from test3:
+
+ // CHECK: define internal void @_ZN5test312_GLOBAL__N_11DD0Ev(%"struct.test3::<anonymous namespace>::D"* %this) unnamed_addr
+ // CHECK: invoke void @_ZN5test312_GLOBAL__N_11DD1Ev(
+ // CHECK: call void @_ZdlPv({{.*}}) nounwind
+ // CHECK: ret void
+ // CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+ // CHECK-NEXT: cleanup
+ // CHECK: call void @_ZdlPv({{.*}}) nounwind
+ // CHECK: resume { i8*, i32 }
+
+ // Checked at top of file:
+ // @_ZN5test312_GLOBAL__N_11DD1Ev = alias internal {{.*}} @_ZN5test312_GLOBAL__N_11DD2Ev
+ // @_ZN5test312_GLOBAL__N_11DD2Ev = alias internal bitcast {{.*}} @_ZN5test312_GLOBAL__N_11CD2Ev
+
+ // CHECK: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD1Ev(
+ // CHECK: getelementptr inbounds i8* {{.*}}, i64 -8
+ // CHECK: call void @_ZN5test312_GLOBAL__N_11DD1Ev(
+ // CHECK: ret void
+
+ // CHECK: define internal void @_ZThn8_N5test312_GLOBAL__N_11DD0Ev(
+ // CHECK: getelementptr inbounds i8* {{.*}}, i64 -8
+ // CHECK: call void @_ZN5test312_GLOBAL__N_11DD0Ev(
+ // CHECK: ret void
+
+ // CHECK: define internal void @_ZN5test312_GLOBAL__N_11CD2Ev(%"struct.test3::<anonymous namespace>::C"* %this) unnamed_addr
+ // CHECK: invoke void @_ZN5test31BD2Ev(
+ // CHECK: call void @_ZN5test31AD2Ev(
+ // CHECK: ret void
+
+ // CHECK: declare void @_ZN5test31BD2Ev(
+ // CHECK: declare void @_ZN5test31AD2Ev(
+
+ // CHECK: define internal void @_ZN5test312_GLOBAL__N_11CD0Ev(%"struct.test3::<anonymous namespace>::C"* %this) unnamed_addr
+ // CHECK: invoke void @_ZN5test312_GLOBAL__N_11CD1Ev(
+ // CHECK: call void @_ZdlPv({{.*}}) nounwind
+ // CHECK: ret void
+ // CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+ // CHECK-NEXT: cleanup
+ // CHECK: call void @_ZdlPv({{.*}}) nounwind
+ // CHECK: resume { i8*, i32 }
+
+ // CHECK: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD1Ev(
+ // CHECK: getelementptr inbounds i8* {{.*}}, i64 -8
+ // CHECK: call void @_ZN5test312_GLOBAL__N_11CD1Ev(
+ // CHECK: ret void
+
+ // CHECK: define internal void @_ZThn8_N5test312_GLOBAL__N_11CD0Ev(
+ // CHECK: getelementptr inbounds i8* {{.*}}, i64 -8
+ // CHECK: call void @_ZN5test312_GLOBAL__N_11CD0Ev(
+ // CHECK: ret void
generated by cgit v1.2.3 (git 2.46.0) at 2024-09-20 03:59:27 +0000