314 lines
7.7 KiB
C++
314 lines
7.7 KiB
C++
// RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -emit-llvm -o %t.ll -O1 -disable-llvm-passes -fms-extensions -fstrict-vtable-pointers
|
|
// RUN: %clang_cc1 %s -triple i686-pc-win32 -emit-llvm -o %t.ms.ll -O1 -disable-llvm-passes -fms-extensions -fstrict-vtable-pointers
|
|
// FIXME: Assume load should not require -fstrict-vtable-pointers
|
|
|
|
// RUN: FileCheck --check-prefix=CHECK1 --input-file=%t.ll %s
|
|
// RUN: FileCheck --check-prefix=CHECK2 --input-file=%t.ll %s
|
|
// RUN: FileCheck --check-prefix=CHECK3 --input-file=%t.ll %s
|
|
// RUN: FileCheck --check-prefix=CHECK4 --input-file=%t.ll %s
|
|
// RUN: FileCheck --check-prefix=CHECK-MS --input-file=%t.ms.ll %s
|
|
// RUN: FileCheck --check-prefix=CHECK6 --input-file=%t.ll %s
|
|
// RUN: FileCheck --check-prefix=CHECK7 --input-file=%t.ll %s
|
|
// RUN: FileCheck --check-prefix=CHECK8 --input-file=%t.ll %s
|
|
// RUN: FileCheck --check-prefix=CHECK9 --input-file=%t.ll %s
|
|
namespace test1 {
|
|
|
|
struct A {
|
|
A();
|
|
virtual void foo();
|
|
};
|
|
|
|
struct B : A {
|
|
virtual void foo();
|
|
};
|
|
|
|
void g(A *a) { a->foo(); }
|
|
|
|
// CHECK1-LABEL: define{{.*}} void @_ZN5test14fooAEv()
|
|
// CHECK1: call void @_ZN5test11AC1Ev(%"struct.test1::A"*
|
|
// CHECK1: %[[VTABLE:.*]] = load i8**, i8*** %{{.*}}
|
|
// CHECK1: %[[CMP:.*]] = icmp eq i8** %[[VTABLE]], getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5test11AE, i32 0, inrange i32 0, i32 2)
|
|
// CHECK1: call void @llvm.assume(i1 %[[CMP]])
|
|
// CHECK1-LABEL: {{^}}}
|
|
|
|
void fooA() {
|
|
A a;
|
|
g(&a);
|
|
}
|
|
|
|
// CHECK1-LABEL: define{{.*}} void @_ZN5test14fooBEv()
|
|
// CHECK1: call void @_ZN5test11BC1Ev(%"struct.test1::B"* {{[^,]*}} %{{.*}})
|
|
// CHECK1: %[[VTABLE:.*]] = load i8**, i8*** %{{.*}}
|
|
// CHECK1: %[[CMP:.*]] = icmp eq i8** %[[VTABLE]], getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN5test11BE, i32 0, inrange i32 0, i32 2)
|
|
// CHECK1: call void @llvm.assume(i1 %[[CMP]])
|
|
// CHECK1-LABEL: {{^}}}
|
|
|
|
void fooB() {
|
|
B b;
|
|
g(&b);
|
|
}
|
|
// there should not be any assumes in the ctor that calls base ctor
|
|
// CHECK1-LABEL: define linkonce_odr void @_ZN5test11BC2Ev(%"struct.test1::B"*
|
|
// CHECK1-NOT: @llvm.assume(
|
|
// CHECK1-LABEL: {{^}}}
|
|
}
|
|
namespace test2 {
|
|
struct A {
|
|
A();
|
|
virtual void foo();
|
|
};
|
|
|
|
struct B {
|
|
B();
|
|
virtual void bar();
|
|
};
|
|
|
|
struct C : A, B {
|
|
C();
|
|
virtual void foo();
|
|
};
|
|
void g(A *a) { a->foo(); }
|
|
void h(B *b) { b->bar(); }
|
|
|
|
// CHECK2-LABEL: define{{.*}} void @_ZN5test24testEv()
|
|
// CHECK2: call void @_ZN5test21CC1Ev(%"struct.test2::C"*
|
|
// CHECK2: %[[VTABLE:.*]] = load i8**, i8*** {{.*}}
|
|
// CHECK2: %[[CMP:.*]] = icmp eq i8** %[[VTABLE]], getelementptr inbounds ({ [3 x i8*], [3 x i8*] }, { [3 x i8*], [3 x i8*] }* @_ZTVN5test21CE, i32 0, inrange i32 0, i32 2)
|
|
// CHECK2: call void @llvm.assume(i1 %[[CMP]])
|
|
|
|
// CHECK2: %[[V2:.*]] = bitcast %"struct.test2::C"* %{{.*}} to i8*
|
|
// CHECK2: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[V2]], i64 8
|
|
// CHECK2: %[[V3:.*]] = bitcast i8* %[[ADD_PTR]] to i8***
|
|
// CHECK2: %[[VTABLE2:.*]] = load i8**, i8*** %[[V3]]
|
|
// CHECK2: %[[CMP2:.*]] = icmp eq i8** %[[VTABLE2]], getelementptr inbounds ({ [3 x i8*], [3 x i8*] }, { [3 x i8*], [3 x i8*] }* @_ZTVN5test21CE, i32 0, inrange i32 1, i32 2)
|
|
// CHECK2: call void @llvm.assume(i1 %[[CMP2]])
|
|
|
|
// CHECK2: call void @_ZN5test21gEPNS_1AE(
|
|
// CHECK2-LABEL: {{^}}}
|
|
|
|
void test() {
|
|
C c;
|
|
g(&c);
|
|
h(&c);
|
|
}
|
|
}
|
|
|
|
namespace test3 {
|
|
struct A {
|
|
A();
|
|
};
|
|
|
|
struct B : A {
|
|
B();
|
|
virtual void foo();
|
|
};
|
|
|
|
struct C : virtual A, B {
|
|
C();
|
|
virtual void foo();
|
|
};
|
|
void g(B *a) { a->foo(); }
|
|
|
|
// CHECK3-LABEL: define{{.*}} void @_ZN5test34testEv()
|
|
// CHECK3: call void @_ZN5test31CC1Ev(%"struct.test3::C"*
|
|
// CHECK3: %[[CMP:.*]] = icmp eq i8** %{{.*}}, getelementptr inbounds ({ [4 x i8*] }, { [4 x i8*] }* @_ZTVN5test31CE, i32 0, inrange i32 0, i32 3)
|
|
// CHECK3: call void @llvm.assume(i1 %[[CMP]])
|
|
// CHECK3-LABLEL: }
|
|
void test() {
|
|
C c;
|
|
g(&c);
|
|
}
|
|
} // test3
|
|
|
|
namespace test4 {
|
|
struct A {
|
|
A();
|
|
virtual void foo();
|
|
};
|
|
|
|
struct B : virtual A {
|
|
B();
|
|
virtual void foo();
|
|
};
|
|
struct C : B {
|
|
C();
|
|
virtual void foo();
|
|
};
|
|
|
|
void g(C *c) { c->foo(); }
|
|
|
|
// CHECK4-LABEL: define{{.*}} void @_ZN5test44testEv()
|
|
// CHECK4: call void @_ZN5test41CC1Ev(%"struct.test4::C"*
|
|
// CHECK4: %[[VTABLE:.*]] = load i8**, i8*** %{{.*}}
|
|
// CHECK4: %[[CMP:.*]] = icmp eq i8** %[[VTABLE]], getelementptr inbounds ({ [5 x i8*] }, { [5 x i8*] }* @_ZTVN5test41CE, i32 0, inrange i32 0, i32 4)
|
|
// CHECK4: call void @llvm.assume(i1 %[[CMP]]
|
|
|
|
// CHECK4: %[[VTABLE2:.*]] = load i8**, i8*** %{{.*}}
|
|
// CHECK4: %[[CMP2:.*]] = icmp eq i8** %[[VTABLE2]], getelementptr inbounds ({ [5 x i8*] }, { [5 x i8*] }* @_ZTVN5test41CE, i32 0, inrange i32 0, i32 4)
|
|
// CHECK4: call void @llvm.assume(i1 %[[CMP2]])
|
|
// CHECK4-LABEL: {{^}}}
|
|
|
|
void test() {
|
|
C c;
|
|
g(&c);
|
|
}
|
|
} // test4
|
|
|
|
namespace testMS {
|
|
|
|
struct __declspec(novtable) S {
|
|
virtual void foo();
|
|
};
|
|
|
|
void g(S &s) { s.foo(); }
|
|
|
|
// if struct has novtable specifier, then we can't generate assumes
|
|
// CHECK-MS-LABEL: define dso_local void @"?test@testMS@@YAXXZ"()
|
|
// CHECK-MS: call x86_thiscallcc %"struct.testMS::S"* @"??0S@testMS@@QAE@XZ"(
|
|
// CHECK-MS-NOT: @llvm.assume
|
|
// CHECK-MS-LABEL: {{^}}}
|
|
|
|
void test() {
|
|
S s;
|
|
g(s);
|
|
}
|
|
|
|
} // testMS
|
|
|
|
namespace test6 {
|
|
struct A {
|
|
A();
|
|
virtual void foo();
|
|
virtual ~A() {}
|
|
};
|
|
struct B : A {
|
|
B();
|
|
};
|
|
// FIXME: Because A's vtable is external, and no virtual functions are hidden,
|
|
// it's safe to generate assumption loads.
|
|
// CHECK6-LABEL: define{{.*}} void @_ZN5test61gEv()
|
|
// CHECK6: call void @_ZN5test61AC1Ev(
|
|
// CHECK6-NOT: call void @llvm.assume(
|
|
|
|
// We can't emit assumption loads for B, because if we would refer to vtable
|
|
// it would refer to functions that will not be able to find (like implicit
|
|
// inline destructor).
|
|
|
|
// CHECK6-LABEL: call void @_ZN5test61BC1Ev(
|
|
// CHECK6-NOT: call void @llvm.assume(
|
|
// CHECK6-LABEL: {{^}}}
|
|
void g() {
|
|
A *a = new A;
|
|
B *b = new B;
|
|
}
|
|
}
|
|
|
|
namespace test7 {
|
|
// Because A's key function is defined here, vtable is generated in this TU
|
|
// CHECK7: @_ZTVN5test71AE ={{.*}} unnamed_addr constant
|
|
struct A {
|
|
A();
|
|
virtual void foo();
|
|
virtual void bar();
|
|
};
|
|
void A::foo() {}
|
|
|
|
// CHECK7-LABEL: define{{.*}} void @_ZN5test71gEv()
|
|
// CHECK7: call void @_ZN5test71AC1Ev(
|
|
// CHECK7: call void @llvm.assume(
|
|
// CHECK7-LABEL: {{^}}}
|
|
void g() {
|
|
A *a = new A();
|
|
a->bar();
|
|
}
|
|
}
|
|
|
|
namespace test8 {
|
|
|
|
struct A {
|
|
virtual void foo();
|
|
virtual void bar();
|
|
};
|
|
|
|
// CHECK8-DAG: @_ZTVN5test81BE = available_externally unnamed_addr constant
|
|
struct B : A {
|
|
B();
|
|
void foo();
|
|
void bar();
|
|
};
|
|
|
|
// CHECK8-DAG: @_ZTVN5test81CE = linkonce_odr unnamed_addr constant
|
|
struct C : A {
|
|
C();
|
|
void bar();
|
|
void foo() {}
|
|
};
|
|
inline void C::bar() {}
|
|
|
|
struct D : A {
|
|
D();
|
|
void foo();
|
|
void inline bar();
|
|
};
|
|
void D::bar() {}
|
|
|
|
// CHECK8-DAG: @_ZTVN5test81EE = linkonce_odr unnamed_addr constant
|
|
struct E : A {
|
|
E();
|
|
};
|
|
|
|
// CHECK8-LABEL: define{{.*}} void @_ZN5test81bEv()
|
|
// CHECK8: call void @llvm.assume(
|
|
// CHECK8-LABEL: {{^}}}
|
|
void b() {
|
|
B b;
|
|
b.bar();
|
|
}
|
|
|
|
// FIXME: C has inline virtual functions which prohibits as from generating
|
|
// assumption loads, but because vtable is generated in this TU (key function
|
|
// defined here) it would be correct to refer to it.
|
|
// CHECK8-LABEL: define{{.*}} void @_ZN5test81cEv()
|
|
// CHECK8-NOT: call void @llvm.assume(
|
|
// CHECK8-LABEL: {{^}}}
|
|
void c() {
|
|
C c;
|
|
c.bar();
|
|
}
|
|
|
|
// FIXME: We could generate assumption loads here.
|
|
// CHECK8-LABEL: define{{.*}} void @_ZN5test81dEv()
|
|
// CHECK8-NOT: call void @llvm.assume(
|
|
// CHECK8-LABEL: {{^}}}
|
|
void d() {
|
|
D d;
|
|
d.bar();
|
|
}
|
|
|
|
// CHECK8-LABEL: define{{.*}} void @_ZN5test81eEv()
|
|
// CHECK8: call void @llvm.assume(
|
|
// CHECK8-LABEL: {{^}}}
|
|
void e() {
|
|
E e;
|
|
e.bar();
|
|
}
|
|
}
|
|
|
|
namespace test9 {
|
|
|
|
struct S {
|
|
S();
|
|
__attribute__((visibility("hidden"))) virtual void doStuff();
|
|
};
|
|
|
|
// CHECK9-LABEL: define{{.*}} void @_ZN5test94testEv()
|
|
// CHECK9-NOT: @llvm.assume(
|
|
// CHECK9: }
|
|
void test() {
|
|
S *s = new S();
|
|
s->doStuff();
|
|
delete s;
|
|
}
|
|
}
|
|
|