From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/CodeGenCXX/destructors.cpp | 403 ++++++++++++++++++++++++++++++++++ 1 file changed, 403 insertions(+) create mode 100644 clang/test/CodeGenCXX/destructors.cpp (limited to 'clang/test/CodeGenCXX/destructors.cpp') diff --git a/clang/test/CodeGenCXX/destructors.cpp b/clang/test/CodeGenCXX/destructors.cpp new file mode 100644 index 0000000..d9962e6 --- /dev/null +++ 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 +class A1 { + ~A1(); +}; + +template<> A1::~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 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::::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::::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::::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 -- cgit v1.2.3