forked from OSchip/llvm-project
106 lines
2.0 KiB
C++
106 lines
2.0 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s
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struct A {
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union {
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int a;
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void* b;
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};
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A() : a(0) { }
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};
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A a;
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namespace PR7021 {
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struct X
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{
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union { long l; };
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};
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// CHECK: define void @_ZN6PR70211fENS_1XES0_
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void f(X x, X z) {
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X x1;
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// CHECK: store i64 1, i64
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x1.l = 1;
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
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X x2(x1);
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X x3;
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
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x3 = x1;
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// CHECK: ret void
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}
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}
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namespace test2 {
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struct A {
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struct {
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union {
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int b;
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};
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};
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A();
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};
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A::A() : b(10) { }
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// CHECK: define void @_ZN5test21AC2Ev(
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// CHECK-NOT: }
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// CHECK: store i32 10
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// CHECK: }
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}
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namespace test3 {
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struct A {
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union {
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mutable char fibers[100];
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struct {
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void (*callback)(void*);
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void *callback_value;
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};
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};
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A();
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};
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A::A() : callback(0), callback_value(0) {}
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// CHECK: define void @ZN5test31AC2Ev(
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// CHECK: [[THIS:%.*]] = load
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// CHECK-NEXT: [[UNION:%.*]] = getelementptr inbounds {{.*}} [[THIS]], i32 0, i32 0
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// CHECK-NEXT: [[STRUCT:%.*]] = getelementptr inbounds {{.*}} [[UNION]], i32 0, i32 0
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// CHECK-NEXT: [[CALLBACK:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 0
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// CHECK-NEXT: store void (i8*)* null, void (i8*)** [[CALLBACK]]
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// CHECK-NEXT: [[UNION:%.*]] = getelementptr inbounds {{.*}} [[THIS]], i32 0, i32 0
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// CHECK-NEXT: [[STRUCT:%.*]] = getelementptr inbounds {{.*}} [[UNION]], i32 0, i32 0
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// CHECK-NEXT: [[CVALUE:%.*]] = getelementptr inbounds {{.*}} [[STRUCT]], i32 0, i32 0
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// CHECK-NEXT: store i8* null, void i8** [[CVALUE]]
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}
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struct S {
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// CHECK: store i32 42
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// CHECK: store i32 55
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S() : x(42), y(55) {}
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union {
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struct {
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int x;
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union { int y; };
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};
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};
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} s;
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//PR8760
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template <typename T>
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struct Foo {
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Foo() : ptr(__nullptr) {}
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union {
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T *ptr;
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};
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};
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Foo<int> f;
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