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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s
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:%.*]] = getelementptr inbounds {{.*}} [[UNION]], i32 0, i32 0
// 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:%.*]] = getelementptr inbounds {{.*}} [[UNION]], i32 0, i32 0
// CHECK-NEXT: [[CVALUE:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 0
// CHECK-NEXT: store i8* null, void 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;
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