340 lines
12 KiB
C++
340 lines
12 KiB
C++
|
// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=i386-pc-win32 -mconstructor-aliases -fexceptions -fcxx-exceptions -fno-rtti | FileCheck -check-prefix WIN32 -check-prefix WIN32-O0 %s
|
||
|
|
// RUN: %clang_cc1 -std=c++11 -emit-llvm -O3 -disable-llvm-passes %s -o - -triple=i386-pc-win32 -mconstructor-aliases -fexceptions -fcxx-exceptions -fno-rtti | FileCheck -check-prefix WIN32 -check-prefix WIN32-O3 -check-prefix WIN32-LIFETIME %s
|
||
|
|
|
||
|
|
struct A {
|
||
|
|
A();
|
||
|
|
~A();
|
||
|
|
int a;
|
||
|
|
};
|
||
|
|
|
||
|
|
A getA();
|
||
|
|
|
||
|
|
int TakesTwo(A a, A b);
|
||
|
|
void HasEHCleanup() {
|
||
|
|
TakesTwo(getA(), getA());
|
||
|
|
}
|
||
|
|
|
||
|
|
// With exceptions, we need to clean up at least one of these temporaries.
|
||
|
|
// WIN32-LABEL: define dso_local void @"?HasEHCleanup@@YAXXZ"() {{.*}} {
|
||
|
|
// WIN32: %[[base:.*]] = call i8* @llvm.stacksave()
|
||
|
|
// If this call throws, we have to restore the stack.
|
||
|
|
// WIN32: call void @"?getA@@YA?AUA@@XZ"(%struct.A* sret(%struct.A) align 4 %{{.*}})
|
||
|
|
// If this call throws, we have to cleanup the first temporary.
|
||
|
|
// WIN32: invoke void @"?getA@@YA?AUA@@XZ"(%struct.A* sret(%struct.A) align 4 %{{.*}})
|
||
|
|
// If this call throws, we have to cleanup the stacksave.
|
||
|
|
// WIN32: call i32 @"?TakesTwo@@YAHUA@@0@Z"
|
||
|
|
// WIN32: call void @llvm.stackrestore
|
||
|
|
// WIN32: ret void
|
||
|
|
//
|
||
|
|
// There should be one dtor call for unwinding from the second getA.
|
||
|
|
// WIN32: cleanuppad
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32-NOT: @"??1A@@QAE@XZ"
|
||
|
|
// WIN32: }
|
||
|
|
|
||
|
|
void TakeRef(const A &a);
|
||
|
|
int HasDeactivatedCleanups() {
|
||
|
|
return TakesTwo((TakeRef(A()), A()), (TakeRef(A()), A()));
|
||
|
|
}
|
||
|
|
|
||
|
|
// WIN32-LABEL: define dso_local i32 @"?HasDeactivatedCleanups@@YAHXZ"() {{.*}} {
|
||
|
|
// WIN32: %[[isactive:.*]] = alloca i1
|
||
|
|
// WIN32: call i8* @llvm.stacksave()
|
||
|
|
// WIN32: %[[argmem:.*]] = alloca inalloca [[argmem_ty:<{ %struct.A, %struct.A }>]]
|
||
|
|
// WIN32: %[[arg1:.*]] = getelementptr inbounds [[argmem_ty]], [[argmem_ty]]* %[[argmem]], i32 0, i32 1
|
||
|
|
// WIN32: call x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32: invoke void @"?TakeRef@@YAXABUA@@@Z"
|
||
|
|
//
|
||
|
|
// WIN32: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"(%struct.A* {{[^,]*}} %[[arg1]])
|
||
|
|
// WIN32: store i1 true, i1* %[[isactive]]
|
||
|
|
//
|
||
|
|
// WIN32: %[[arg0:.*]] = getelementptr inbounds [[argmem_ty]], [[argmem_ty]]* %[[argmem]], i32 0, i32 0
|
||
|
|
// WIN32: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32: invoke void @"?TakeRef@@YAXABUA@@@Z"
|
||
|
|
// WIN32: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32: store i1 false, i1* %[[isactive]]
|
||
|
|
//
|
||
|
|
// WIN32: invoke i32 @"?TakesTwo@@YAHUA@@0@Z"([[argmem_ty]]* inalloca %[[argmem]])
|
||
|
|
// Destroy the two const ref temporaries.
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32: ret i32
|
||
|
|
//
|
||
|
|
// Conditionally destroy arg1.
|
||
|
|
// WIN32: %[[cond:.*]] = load i1, i1* %[[isactive]]
|
||
|
|
// WIN32: br i1 %[[cond]]
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1A@@QAE@XZ"(%struct.A* {{[^,]*}} %[[arg1]])
|
||
|
|
// WIN32: }
|
||
|
|
|
||
|
|
// Test putting the cleanups inside a conditional.
|
||
|
|
int CouldThrow();
|
||
|
|
int HasConditionalCleanup(bool cond) {
|
||
|
|
return (cond ? TakesTwo(A(), A()) : CouldThrow());
|
||
|
|
}
|
||
|
|
|
||
|
|
// WIN32-LABEL: define dso_local i32 @"?HasConditionalCleanup@@YAH_N@Z"(i1 zeroext %{{.*}}) {{.*}} {
|
||
|
|
// WIN32: store i1 false
|
||
|
|
// WIN32: br i1
|
||
|
|
// WIN32: call i8* @llvm.stacksave()
|
||
|
|
// WIN32: call x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"(%struct.A* {{[^,]*}} %{{.*}})
|
||
|
|
// WIN32: store i1 true
|
||
|
|
// WIN32: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"(%struct.A* {{[^,]*}} %{{.*}})
|
||
|
|
// WIN32: call i32 @"?TakesTwo@@YAHUA@@0@Z"
|
||
|
|
//
|
||
|
|
// WIN32: call void @llvm.stackrestore
|
||
|
|
//
|
||
|
|
// WIN32: call i32 @"?CouldThrow@@YAHXZ"()
|
||
|
|
//
|
||
|
|
// Only one dtor in the invoke for arg1
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32-NOT: invoke x86_thiscallcc void @"??1A@@QAE@XZ"
|
||
|
|
// WIN32: }
|
||
|
|
|
||
|
|
// Now test both.
|
||
|
|
int HasConditionalDeactivatedCleanups(bool cond) {
|
||
|
|
return (cond ? TakesTwo((TakeRef(A()), A()), (TakeRef(A()), A())) : CouldThrow());
|
||
|
|
}
|
||
|
|
|
||
|
|
// WIN32-O0-LABEL: define dso_local i32 @"?HasConditionalDeactivatedCleanups@@YAH_N@Z"{{.*}} {
|
||
|
|
// WIN32-O0: alloca i1
|
||
|
|
// WIN32-O0: %[[arg1_cond:.*]] = alloca i1
|
||
|
|
// Start all four cleanups as deactivated.
|
||
|
|
// WIN32-O0: store i1 false
|
||
|
|
// WIN32-O0: store i1 false
|
||
|
|
// WIN32-O0: store i1 false
|
||
|
|
// WIN32-O0: store i1 false
|
||
|
|
// WIN32-O0: br i1
|
||
|
|
// True condition.
|
||
|
|
// WIN32-O0: call x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32-O0: store i1 true
|
||
|
|
// WIN32-O0: invoke void @"?TakeRef@@YAXABUA@@@Z"
|
||
|
|
// WIN32-O0: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32-O0: store i1 true, i1* %[[arg1_cond]]
|
||
|
|
// WIN32-O0: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32-O0: store i1 true
|
||
|
|
// WIN32-O0: invoke void @"?TakeRef@@YAXABUA@@@Z"
|
||
|
|
// WIN32-O0: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32-O0: store i1 true
|
||
|
|
// WIN32-O0: store i1 false, i1* %[[arg1_cond]]
|
||
|
|
// WIN32-O0: invoke i32 @"?TakesTwo@@YAHUA@@0@Z"
|
||
|
|
// False condition.
|
||
|
|
// WIN32-O0: invoke i32 @"?CouldThrow@@YAHXZ"()
|
||
|
|
// Two normal cleanups for TakeRef args.
|
||
|
|
// WIN32-O0: call x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32-O0-NOT: invoke x86_thiscallcc void @"??1A@@QAE@XZ"
|
||
|
|
// WIN32-O0: ret i32
|
||
|
|
//
|
||
|
|
// Somewhere in the landing pad soup, we conditionally destroy arg1.
|
||
|
|
// WIN32-O0: %[[isactive:.*]] = load i1, i1* %[[arg1_cond]]
|
||
|
|
// WIN32-O0: br i1 %[[isactive]]
|
||
|
|
// WIN32-O0: call x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32-O0: }
|
||
|
|
|
||
|
|
// WIN32-O3-LABEL: define dso_local i32 @"?HasConditionalDeactivatedCleanups@@YAH_N@Z"{{.*}} {
|
||
|
|
// WIN32-O3: alloca i1
|
||
|
|
// WIN32-O3: alloca i1
|
||
|
|
// WIN32-O3: %[[arg1_cond:.*]] = alloca i1
|
||
|
|
// Start all four cleanups as deactivated.
|
||
|
|
// WIN32-O3: store i1 false
|
||
|
|
// WIN32-O3: store i1 false
|
||
|
|
// WIN32-O3: store i1 false
|
||
|
|
// WIN32-O3: store i1 false
|
||
|
|
// WIN32-O3: store i1 false
|
||
|
|
// WIN32-O3: store i1 false
|
||
|
|
// WIN32-O3: br i1
|
||
|
|
// True condition.
|
||
|
|
// WIN32-O3: call x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32-O3: store i1 true
|
||
|
|
// WIN32-O3: invoke void @"?TakeRef@@YAXABUA@@@Z"
|
||
|
|
// WIN32-O3: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32-O3: store i1 true, i1* %[[arg1_cond]]
|
||
|
|
// WIN32-O3: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32-O3: store i1 true
|
||
|
|
// WIN32-O3: invoke void @"?TakeRef@@YAXABUA@@@Z"
|
||
|
|
// WIN32-O3: invoke x86_thiscallcc %struct.A* @"??0A@@QAE@XZ"
|
||
|
|
// WIN32-O3: store i1 true
|
||
|
|
// WIN32-O3: store i1 false, i1* %[[arg1_cond]]
|
||
|
|
// WIN32-O3: invoke i32 @"?TakesTwo@@YAHUA@@0@Z"
|
||
|
|
// False condition.
|
||
|
|
// WIN32-O3: invoke i32 @"?CouldThrow@@YAHXZ"()
|
||
|
|
// Two normal cleanups for TakeRef args.
|
||
|
|
// WIN32-O3: call x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32-O3-NOT: invoke x86_thiscallcc void @"??1A@@QAE@XZ"
|
||
|
|
// WIN32-O3: ret i32
|
||
|
|
//
|
||
|
|
// Somewhere in the landing pad soup, we conditionally destroy arg1.
|
||
|
|
// WIN32-O3: %[[isactive:.*]] = load i1, i1* %[[arg1_cond]]
|
||
|
|
// WIN32-O3: br i1 %[[isactive]]
|
||
|
|
// WIN32-O3: call x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32-O3: }
|
||
|
|
|
||
|
|
namespace crash_on_partial_destroy {
|
||
|
|
struct A {
|
||
|
|
virtual ~A();
|
||
|
|
};
|
||
|
|
|
||
|
|
struct B : virtual A {
|
||
|
|
// Has an implicit destructor.
|
||
|
|
};
|
||
|
|
|
||
|
|
struct C : B {
|
||
|
|
C();
|
||
|
|
};
|
||
|
|
|
||
|
|
void foo();
|
||
|
|
// We used to crash when emitting this.
|
||
|
|
C::C() { foo(); }
|
||
|
|
|
||
|
|
// Verify that we don't bother with a vbtable lookup when adjusting the this
|
||
|
|
// pointer to call a base destructor from a constructor while unwinding.
|
||
|
|
// WIN32-LABEL: define dso_local {{.*}} @"??0C@crash_on_partial_destroy@@QAE@XZ"{{.*}} {
|
||
|
|
// WIN32: cleanuppad
|
||
|
|
//
|
||
|
|
// We shouldn't do any vbptr loads, just constant GEPs.
|
||
|
|
// WIN32-NOT: load
|
||
|
|
// WIN32: getelementptr i8, i8* %{{.*}}, i32 4
|
||
|
|
// WIN32-NOT: load
|
||
|
|
// WIN32: bitcast i8* %{{.*}} to %"struct.crash_on_partial_destroy::B"*
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1B@crash_on_partial_destroy@@UAE@XZ"
|
||
|
|
//
|
||
|
|
// WIN32-NOT: load
|
||
|
|
// WIN32: bitcast %"struct.crash_on_partial_destroy::C"* %{{.*}} to i8*
|
||
|
|
// WIN32-NOT: load
|
||
|
|
// WIN32: getelementptr inbounds i8, i8* %{{.*}}, i32 4
|
||
|
|
// WIN32-NOT: load
|
||
|
|
// WIN32: bitcast i8* %{{.*}} to %"struct.crash_on_partial_destroy::A"*
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1A@crash_on_partial_destroy@@UAE@XZ"({{.*}})
|
||
|
|
// WIN32: }
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dont_call_terminate {
|
||
|
|
struct C {
|
||
|
|
~C();
|
||
|
|
};
|
||
|
|
void g();
|
||
|
|
void f() {
|
||
|
|
C c;
|
||
|
|
g();
|
||
|
|
}
|
||
|
|
|
||
|
|
// WIN32-LABEL: define dso_local void @"?f@dont_call_terminate@@YAXXZ"()
|
||
|
|
// WIN32: invoke void @"?g@dont_call_terminate@@YAXXZ"()
|
||
|
|
// WIN32-NEXT: to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
|
||
|
|
//
|
||
|
|
// WIN32: [[cont]]
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1C@dont_call_terminate@@QAE@XZ"({{.*}})
|
||
|
|
//
|
||
|
|
// WIN32: [[lpad]]
|
||
|
|
// WIN32-NEXT: cleanuppad
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1C@dont_call_terminate@@QAE@XZ"({{.*}})
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace noexcept_false_dtor {
|
||
|
|
struct D {
|
||
|
|
~D() noexcept(false);
|
||
|
|
};
|
||
|
|
void f() {
|
||
|
|
D d;
|
||
|
|
CouldThrow();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// WIN32-LABEL: define dso_local void @"?f@noexcept_false_dtor@@YAXXZ"()
|
||
|
|
// WIN32: invoke i32 @"?CouldThrow@@YAHXZ"()
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1D@noexcept_false_dtor@@QAE@XZ"(%"struct.noexcept_false_dtor::D"* {{[^,]*}} %{{.*}})
|
||
|
|
// WIN32: cleanuppad
|
||
|
|
// WIN32: call x86_thiscallcc void @"??1D@noexcept_false_dtor@@QAE@XZ"(%"struct.noexcept_false_dtor::D"* {{[^,]*}} %{{.*}})
|
||
|
|
// WIN32: cleanupret
|
||
|
|
|
||
|
|
namespace lifetime_marker {
|
||
|
|
struct C {
|
||
|
|
~C();
|
||
|
|
};
|
||
|
|
void g();
|
||
|
|
void f() {
|
||
|
|
C c;
|
||
|
|
g();
|
||
|
|
}
|
||
|
|
|
||
|
|
// WIN32-LIFETIME-LABEL: define dso_local void @"?f@lifetime_marker@@YAXXZ"()
|
||
|
|
// WIN32-LIFETIME: %[[c:.*]] = alloca %"struct.lifetime_marker::C"
|
||
|
|
// WIN32-LIFETIME: %[[bc0:.*]] = bitcast %"struct.lifetime_marker::C"* %c to i8*
|
||
|
|
// WIN32-LIFETIME: call void @llvm.lifetime.start.p0i8(i64 1, i8* %[[bc0]])
|
||
|
|
// WIN32-LIFETIME: invoke void @"?g@lifetime_marker@@YAXXZ"()
|
||
|
|
// WIN32-LIFETIME-NEXT: to label %[[cont:[^ ]*]] unwind label %[[lpad0:[^ ]*]]
|
||
|
|
//
|
||
|
|
// WIN32-LIFETIME: [[cont]]
|
||
|
|
// WIN32-LIFETIME: call x86_thiscallcc void @"??1C@lifetime_marker@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32-LIFETIME: %[[bc1:.*]] = bitcast %"struct.lifetime_marker::C"* %[[c]] to i8*
|
||
|
|
// WIN32-LIFETIME: call void @llvm.lifetime.end.p0i8(i64 1, i8* %[[bc1]])
|
||
|
|
//
|
||
|
|
// WIN32-LIFETIME: [[lpad0]]
|
||
|
|
// WIN32-LIFETIME-NEXT: cleanuppad
|
||
|
|
// WIN32-LIFETIME: call x86_thiscallcc void @"??1C@lifetime_marker@@QAE@XZ"({{.*}})
|
||
|
|
// WIN32-LIFETIME: cleanupret {{.*}} unwind label %[[lpad1:[^ ]*]]
|
||
|
|
//
|
||
|
|
// WIN32-LIFETIME: [[lpad1]]
|
||
|
|
// WIN32-LIFETIME-NEXT: cleanuppad
|
||
|
|
// WIN32-LIFETIME: %[[bc2:.*]] = bitcast %"struct.lifetime_marker::C"* %[[c]] to i8*
|
||
|
|
// WIN32-LIFETIME: call void @llvm.lifetime.end.p0i8(i64 1, i8* %[[bc2]])
|
||
|
|
}
|
||
|
|
|
||
|
|
struct class_2 {
|
||
|
|
class_2();
|
||
|
|
virtual ~class_2();
|
||
|
|
};
|
||
|
|
struct class_1 : virtual class_2 {
|
||
|
|
class_1(){throw "Unhandled exception";}
|
||
|
|
virtual ~class_1() {}
|
||
|
|
};
|
||
|
|
struct class_0 : class_1 {
|
||
|
|
class_0() ;
|
||
|
|
virtual ~class_0() {}
|
||
|
|
};
|
||
|
|
|
||
|
|
class_0::class_0() {
|
||
|
|
// WIN32: define dso_local x86_thiscallcc %struct.class_0* @"??0class_0@@QAE@XZ"(%struct.class_0* {{[^,]*}} returned {{[^,]*}} %this, i32 %is_most_derived)
|
||
|
|
// WIN32: store i32 %is_most_derived, i32* %[[IS_MOST_DERIVED_VAR:.*]], align 4
|
||
|
|
// WIN32: %[[IS_MOST_DERIVED_VAL:.*]] = load i32, i32* %[[IS_MOST_DERIVED_VAR]]
|
||
|
|
// WIN32: %[[SHOULD_CALL_VBASE_CTORS:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
|
||
|
|
// WIN32: br i1 %[[SHOULD_CALL_VBASE_CTORS]], label %[[INIT_VBASES:.*]], label %[[SKIP_VBASES:.*]]
|
||
|
|
// WIN32: [[INIT_VBASES]]
|
||
|
|
// WIN32: br label %[[SKIP_VBASES]]
|
||
|
|
// WIN32: [[SKIP_VBASES]]
|
||
|
|
// ehcleanup:
|
||
|
|
// WIN32: %[[CLEANUPPAD:.*]] = cleanuppad within none []
|
||
|
|
// WIN32-NEXT: bitcast %{{.*}}* %{{.*}} to i8*
|
||
|
|
// WIN32-NEXT: getelementptr inbounds i8, i8* %{{.*}}, i{{.*}} {{.}}
|
||
|
|
// WIN32-NEXT: bitcast i8* %{{.*}} to %{{.*}}*
|
||
|
|
// WIN32-NEXT: %[[SHOULD_CALL_VBASE_DTOR:.*]] = icmp ne i32 %[[IS_MOST_DERIVED_VAL]], 0
|
||
|
|
// WIN32-NEXT: br i1 %[[SHOULD_CALL_VBASE_DTOR]], label %[[DTOR_VBASE:.*]], label %[[SKIP_VBASE:.*]]
|
||
|
|
// WIN32: [[DTOR_VBASE]]
|
||
|
|
// WIN32-NEXT: call x86_thiscallcc void @"??1class_2@@UAE@XZ"
|
||
|
|
// WIN32: br label %[[SKIP_VBASE]]
|
||
|
|
// WIN32: [[SKIP_VBASE]]
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR37146 {
|
||
|
|
// Check that IRGen doesn't emit calls to synthesized destructors for
|
||
|
|
// non-trival C structs.
|
||
|
|
|
||
|
|
// WIN32: define dso_local void @"?test@PR37146@@YAXXZ"()
|
||
|
|
// WIN32: call void @llvm.memset.p0i8.i32(
|
||
|
|
// WIN32: call i32 @"?getS@PR37146@@YA?AUS@1@XZ"(
|
||
|
|
// WIN32: call void @"?func@PR37146@@YAXUS@1@0@Z"(
|
||
|
|
// WIN32-NEXT: ret void
|
||
|
|
// WIN32-NEXT: {{^}$}}
|
||
|
|
|
||
|
|
struct S {
|
||
|
|
int f;
|
||
|
|
};
|
||
|
|
|
||
|
|
void func(S, S);
|
||
|
|
S getS();
|
||
|
|
|
||
|
|
void test() {
|
||
|
|
func(getS(), S());
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|