3d1dcd9bfd
http://llvm.org/svn/llvm-project/cfe/branches/release_28@114020 Approved by: rpaulo (mentor)
93 lines
1.8 KiB
C++
93 lines
1.8 KiB
C++
// 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;
|