llvm-project/clang/test/CodeGenCXX/class-layout.cpp

48 lines
1016 B
C++

// RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
// An extra byte should be allocated for an empty class.
namespace Test1 {
// CHECK: %"struct.Test1::A" = type { i8 }
struct A { } *a;
}
namespace Test2 {
// No need to add tail padding here.
// CHECK: %"struct.Test2::A" = type { i8*, i32 }
struct A { void *a; int b; } *a;
}
namespace Test3 {
// C should have a vtable pointer.
// CHECK: %"struct.Test3::A" = type { i32 (...)**, i32 }
struct A { virtual void f(); int a; } *a;
}
namespace Test4 {
// Test from PR5589.
// CHECK: %"struct.Test4::A" = type { i32, i8, float }
// CHECK: %"struct.Test4::B" = type { %"struct.Test4::A", i16, double }
struct A {
int a;
char c;
float b;
};
struct B : public A {
short d;
double e;
} *b;
}
namespace Test5 {
struct A {
virtual void f();
char a;
};
// CHECK: %"struct.Test5::B" = type { [9 x i8], i8, i8, [5 x i8] }
struct B : A {
char b : 1;
char c;
} *b;
}