forked from OSchip/llvm-project
117 lines
2.1 KiB
C++
117 lines
2.1 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
|
|
|
|
// rdar://8818236
|
|
namespace rdar8818236 {
|
|
struct S {
|
|
char c2;
|
|
union {
|
|
char c;
|
|
int i;
|
|
};
|
|
};
|
|
|
|
// CHECK: @_ZN11rdar88182363fooE = global i64 4
|
|
char S::*foo = &S::c;
|
|
}
|
|
|
|
struct A {
|
|
union {
|
|
int a;
|
|
void* b;
|
|
};
|
|
|
|
A() : a(0) { }
|
|
};
|
|
|
|
A a;
|
|
|
|
namespace PR7021 {
|
|
struct X
|
|
{
|
|
union { long l; };
|
|
};
|
|
|
|
// CHECK: define void @_ZN6PR70211fENS_1XES0_
|
|
void f(X x, X z) {
|
|
X x1;
|
|
|
|
// CHECK: store i64 1, i64
|
|
x1.l = 1;
|
|
|
|
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
|
|
X x2(x1);
|
|
|
|
X x3;
|
|
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
|
|
x3 = x1;
|
|
|
|
// CHECK: ret void
|
|
}
|
|
}
|
|
|
|
namespace test2 {
|
|
struct A {
|
|
struct {
|
|
union {
|
|
int b;
|
|
};
|
|
};
|
|
|
|
A();
|
|
};
|
|
|
|
A::A() : b(10) { }
|
|
// CHECK: define void @_ZN5test21AC2Ev(
|
|
// CHECK-NOT: }
|
|
// CHECK: store i32 10
|
|
// CHECK: }
|
|
}
|
|
|
|
namespace test3 {
|
|
struct A {
|
|
union {
|
|
mutable char fibers[100];
|
|
struct {
|
|
void (*callback)(void*);
|
|
void *callback_value;
|
|
};
|
|
};
|
|
|
|
A();
|
|
};
|
|
|
|
A::A() : callback(0), callback_value(0) {}
|
|
// CHECK: define void @_ZN5test31AC2Ev(
|
|
// CHECK: [[THIS:%.*]] = load
|
|
// CHECK-NEXT: [[UNION:%.*]] = getelementptr inbounds {{.*}} [[THIS]], i32 0, i32 0
|
|
// CHECK-NEXT: [[STRUCT:%.*]] = bitcast {{.*}}* [[UNION]] to
|
|
// CHECK-NEXT: [[CALLBACK:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 0
|
|
// CHECK-NEXT: store void (i8*)* null, void (i8*)** [[CALLBACK]]
|
|
// CHECK-NEXT: [[UNION:%.*]] = getelementptr inbounds {{.*}} [[THIS]], i32 0, i32 0
|
|
// CHECK-NEXT: [[STRUCT:%.*]] = bitcast {{.*}}* [[UNION]] to
|
|
// CHECK-NEXT: [[CVALUE:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 1
|
|
// CHECK-NEXT: store i8* null, i8** [[CVALUE]]
|
|
}
|
|
|
|
struct S {
|
|
// CHECK: store i32 42
|
|
// CHECK: store i32 55
|
|
S() : x(42), y(55) {}
|
|
union {
|
|
struct {
|
|
int x;
|
|
union { int y; };
|
|
};
|
|
};
|
|
} s;
|
|
|
|
|
|
//PR8760
|
|
template <typename T> struct Foo {
|
|
Foo() : ptr(__nullptr) {}
|
|
union {
|
|
T *ptr;
|
|
};
|
|
};
|
|
Foo<int> f;
|