arm.cpp revision c5f657fe308f22243f674fc1dfbe24915944d8bf 
1// RUN: %clang_cc1 %s -triple=thumbv7-apple-darwin3.0.0-iphoneos -fno-use-cxa-atexit -target-abi apcs-gnu -emit-llvm -o - -fexceptions | FileCheck %s
2
3// CHECK: @_ZZN5test74testEvE1x = internal global i32 0, align 4
4// CHECK: @_ZGVZN5test74testEvE1x = internal global i32 0
5// CHECK: @_ZZN5test84testEvE1x = internal global [[TEST8A:.*]] zeroinitializer, align 1
6// CHECK: @_ZGVZN5test84testEvE1x = internal global i32 0
7
8typedef typeof(sizeof(int)) size_t;
9
10class foo {
11public:
12    foo();
13    virtual ~foo();
14};
15
16class bar : public foo {
17public:
18	bar();
19};
20
21// The global dtor needs the right calling conv with -fno-use-cxa-atexit
22// rdar://7817590
23// Checked at end of file.
24bar baz;
25
26// Destructors and constructors must return this.
27namespace test1 {
28  void foo();
29
30  struct A {
31    A(int i) { foo(); }
32    ~A() { foo(); }
33    void bar() { foo(); }
34  };
35
36  // CHECK: define void @_ZN5test14testEv()
37  void test() {
38    // CHECK: [[AV:%.*]] = alloca [[A:%.*]], align 1
39    // CHECK: call [[A]]* @_ZN5test11AC1Ei([[A]]* [[AV]], i32 10)
40    // CHECK: invoke void @_ZN5test11A3barEv([[A]]* [[AV]])
41    // CHECK: call [[A]]* @_ZN5test11AD1Ev([[A]]* [[AV]])
42    // CHECK: ret void
43    A a = 10;
44    a.bar();
45  }
46
47  // CHECK: define linkonce_odr unnamed_addr [[A]]* @_ZN5test11AC1Ei([[A]]*
48  // CHECK:   [[RET:%.*]] = alloca [[A]]*, align 4
49  // CHECK:   [[THIS:%.*]] = alloca [[A]]*, align 4
50  // CHECK:   store [[A]]* {{.*}}, [[A]]** [[THIS]]
51  // CHECK:   [[THIS1:%.*]] = load [[A]]** [[THIS]]
52  // CHECK:   store [[A]]* [[THIS1]], [[A]]** [[RET]]
53  // CHECK:   call [[A]]* @_ZN5test11AC2Ei(
54  // CHECK:   [[THIS2:%.*]] = load [[A]]** [[RET]]
55  // CHECK:   ret [[A]]* [[THIS2]]
56
57  // CHECK: define linkonce_odr unnamed_addr [[A]]* @_ZN5test11AD1Ev([[A]]*
58  // CHECK:   [[RET:%.*]] = alloca [[A]]*, align 4
59  // CHECK:   [[THIS:%.*]] = alloca [[A]]*, align 4
60  // CHECK:   store [[A]]* {{.*}}, [[A]]** [[THIS]]
61  // CHECK:   [[THIS1:%.*]] = load [[A]]** [[THIS]]
62  // CHECK:   store [[A]]* [[THIS1]], [[A]]** [[RET]]
63  // CHECK:   call [[A]]* @_ZN5test11AD2Ev(
64  // CHECK:   [[THIS2:%.*]] = load [[A]]** [[RET]]
65  // CHECK:   ret [[A]]* [[THIS2]]
66}
67
68// Awkward virtual cases.
69namespace test2 {
70  void foo();
71
72  struct A {
73    int x;
74
75    A(int);
76    virtual ~A() { foo(); }
77  };
78
79  struct B {
80    int y;
81    int z;
82
83    B(int);
84    virtual ~B() { foo(); }
85  };
86
87  struct C : A, virtual B {
88    int q;
89
90    C(int i) : A(i), B(i) { foo(); }
91    ~C() { foo(); }
92  };
93
94  void test() {
95    C c = 10;
96  }
97
98  // Tests at eof
99}
100
101namespace test3 {
102  struct A {
103    int x;
104    ~A();
105  };
106
107  void a() {
108    // CHECK: define void @_ZN5test31aEv()
109    // CHECK: call noalias i8* @_Znam(i32 48)
110    // CHECK: store i32 4
111    // CHECK: store i32 10
112    A *x = new A[10];
113  }
114
115  void b(int n) {
116    // CHECK: define void @_ZN5test31bEi(
117    // CHECK: [[N:%.*]] = load i32*
118    // CHECK: @llvm.umul.with.overflow.i32(i32 [[N]], i32 4)
119    // CHECK: @llvm.uadd.with.overflow.i32(i32 {{.*}}, i32 8)
120    // CHECK: [[SZ:%.*]] = select
121    // CHECK: call noalias i8* @_Znam(i32 [[SZ]])
122    // CHECK: store i32 4
123    // CHECK: store i32 [[N]]
124    A *x = new A[n];
125  }
126
127  void c() {
128    // CHECK: define void @_ZN5test31cEv()
129    // CHECK: call  noalias i8* @_Znam(i32 808)
130    // CHECK: store i32 4
131    // CHECK: store i32 200
132    A (*x)[20] = new A[10][20];
133  }
134
135  void d(int n) {
136    // CHECK: define void @_ZN5test31dEi(
137    // CHECK: [[N:%.*]] = load i32*
138    // CHECK: [[NE:%.*]] = mul i32 [[N]], 20
139    // CHECK: @llvm.umul.with.overflow.i32(i32 [[N]], i32 80)
140    // CHECK: @llvm.uadd.with.overflow.i32(i32 {{.*}}, i32 8)
141    // CHECK: [[SZ:%.*]] = select
142    // CHECK: call noalias i8* @_Znam(i32 [[SZ]])
143    // CHECK: store i32 4
144    // CHECK: store i32 [[NE]]
145    A (*x)[20] = new A[n][20];
146  }
147
148  void e(A *x) {
149    // CHECK: define void @_ZN5test31eEPNS_1AE(
150    // CHECK: icmp eq {{.*}}, null
151    // CHECK: getelementptr {{.*}}, i64 -8
152    // CHECK: getelementptr {{.*}}, i64 4
153    // CHECK: bitcast {{.*}} to i32*
154    // CHECK: load
155    // CHECK: invoke {{.*}} @_ZN5test31AD1Ev
156    // CHECK: call void @_ZdaPv
157    delete [] x;
158  }
159
160  void f(A (*x)[20]) {
161    // CHECK: define void @_ZN5test31fEPA20_NS_1AE(
162    // CHECK: icmp eq {{.*}}, null
163    // CHECK: getelementptr {{.*}}, i64 -8
164    // CHECK: getelementptr {{.*}}, i64 4
165    // CHECK: bitcast {{.*}} to i32*
166    // CHECK: load
167    // CHECK: invoke {{.*}} @_ZN5test31AD1Ev
168    // CHECK: call void @_ZdaPv
169    delete [] x;
170  }
171}
172
173namespace test4 {
174  struct A {
175    int x;
176    void operator delete[](void *, size_t sz);
177  };
178
179  void a() {
180    // CHECK: define void @_ZN5test41aEv()
181    // CHECK: call noalias i8* @_Znam(i32 48)
182    // CHECK: store i32 4
183    // CHECK: store i32 10
184    A *x = new A[10];
185  }
186
187  void b(int n) {
188    // CHECK: define void @_ZN5test41bEi(
189    // CHECK: [[N:%.*]] = load i32*
190    // CHECK: @llvm.umul.with.overflow.i32(i32 [[N]], i32 4)
191    // CHECK: @llvm.uadd.with.overflow.i32(i32 {{.*}}, i32 8)
192    // CHECK: [[SZ:%.*]] = select
193    // CHECK: call noalias i8* @_Znam(i32 [[SZ]])
194    // CHECK: store i32 4
195    // CHECK: store i32 [[N]]
196    A *x = new A[n];
197  }
198
199  void c() {
200    // CHECK: define void @_ZN5test41cEv()
201    // CHECK: call  noalias i8* @_Znam(i32 808)
202    // CHECK: store i32 4
203    // CHECK: store i32 200
204    A (*x)[20] = new A[10][20];
205  }
206
207  void d(int n) {
208    // CHECK: define void @_ZN5test41dEi(
209    // CHECK: [[N:%.*]] = load i32*
210    // CHECK: [[NE:%.*]] = mul i32 [[N]], 20
211    // CHECK: @llvm.umul.with.overflow.i32(i32 [[N]], i32 80)
212    // CHECK: @llvm.uadd.with.overflow.i32(i32 {{.*}}, i32 8)
213    // CHECK: [[SZ:%.*]] = select
214    // CHECK: call noalias i8* @_Znam(i32 [[SZ]])
215    // CHECK: store i32 4
216    // CHECK: store i32 [[NE]]
217    A (*x)[20] = new A[n][20];
218  }
219
220  void e(A *x) {
221    // CHECK: define void @_ZN5test41eEPNS_1AE(
222    // CHECK: [[ALLOC:%.*]] = getelementptr inbounds {{.*}}, i64 -8
223    // CHECK: getelementptr inbounds {{.*}}, i64 4
224    // CHECK: bitcast
225    // CHECK: [[T0:%.*]] = load i32*
226    // CHECK: [[T1:%.*]] = mul i32 4, [[T0]]
227    // CHECK: [[T2:%.*]] = add i32 [[T1]], 8
228    // CHECK: call void @_ZN5test41AdaEPvm(i8* [[ALLOC]], i32 [[T2]])
229    delete [] x;
230  }
231
232  void f(A (*x)[20]) {
233    // CHECK: define void @_ZN5test41fEPA20_NS_1AE(
234    // CHECK: [[ALLOC:%.*]] = getelementptr inbounds {{.*}}, i64 -8
235    // CHECK: getelementptr inbounds {{.*}}, i64 4
236    // CHECK: bitcast
237    // CHECK: [[T0:%.*]] = load i32*
238    // CHECK: [[T1:%.*]] = mul i32 4, [[T0]]
239    // CHECK: [[T2:%.*]] = add i32 [[T1]], 8
240    // CHECK: call void @_ZN5test41AdaEPvm(i8* [[ALLOC]], i32 [[T2]])
241    delete [] x;
242  }
243}
244
245// <rdar://problem/8386802>: don't crash
246namespace test5 {
247  struct A {
248    ~A();
249  };
250
251  // CHECK: define void @_ZN5test54testEPNS_1AE
252  void test(A *a) {
253    // CHECK:      [[PTR:%.*]] = alloca [[A:%.*]]*, align 4
254    // CHECK-NEXT: store [[A]]* {{.*}}, [[A]]** [[PTR]], align 4
255    // CHECK-NEXT: [[TMP:%.*]] = load [[A]]** [[PTR]], align 4
256    // CHECK-NEXT: call [[A]]* @_ZN5test51AD1Ev([[A]]* [[TMP]])
257    // CHECK-NEXT: ret void
258    a->~A();
259  }
260}
261
262namespace test6 {
263  struct A {
264    virtual ~A();
265  };
266
267  // CHECK: define void @_ZN5test64testEPNS_1AE
268  void test(A *a) {
269    // CHECK:      [[AVAR:%.*]] = alloca [[A:%.*]]*, align 4
270    // CHECK-NEXT: store [[A]]* {{.*}}, [[A]]** [[AVAR]], align 4
271    // CHECK-NEXT: [[V:%.*]] = load [[A]]** [[AVAR]], align 4
272    // CHECK-NEXT: [[ISNULL:%.*]] = icmp eq [[A]]* [[V]], null
273    // CHECK-NEXT: br i1 [[ISNULL]]
274    // CHECK:      [[T0:%.*]] = bitcast [[A]]* [[V]] to [[A]]* ([[A]]*)***
275    // CHECK-NEXT: [[T1:%.*]] = load [[A]]* ([[A]]*)*** [[T0]]
276    // CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds [[A]]* ([[A]]*)** [[T1]], i64 1
277    // CHECK-NEXT: [[T3:%.*]] = load [[A]]* ([[A]]*)** [[T2]]
278    // CHECK-NEXT: call [[A]]* [[T3]]([[A]]* [[V]])
279    // CHECK-NEXT: br label
280    // CHECK:      ret void
281    delete a;
282  }
283}
284
285namespace test7 {
286  int foo();
287
288  // Static and guard tested at top of file
289
290  // CHECK: define void @_ZN5test74testEv()
291  void test() {
292    // CHECK:      [[T0:%.*]] = load i32* @_ZGVZN5test74testEvE1x
293    // CHECK-NEXT: [[T1:%.*]] = and i32 [[T0]], 1
294    // CHECK-NEXT: [[T2:%.*]] = icmp eq i32 [[T1]], 0
295    // CHECK-NEXT: br i1 [[T2]]
296    //   -> fallthrough, end
297    // CHECK:      [[T3:%.*]] = call i32 @__cxa_guard_acquire(i32* @_ZGVZN5test74testEvE1x)
298    // CHECK-NEXT: [[T4:%.*]] = icmp ne i32 [[T3]], 0
299    // CHECK-NEXT: br i1 [[T4]]
300    //   -> fallthrough, end
301    // CHECK:      [[INIT:%.*]] = invoke i32 @_ZN5test73fooEv()
302    // CHECK:      store i32 [[INIT]], i32* @_ZZN5test74testEvE1x, align 4
303    // CHECK-NEXT: call void @__cxa_guard_release(i32* @_ZGVZN5test74testEvE1x)
304    // CHECK-NEXT: br label
305    //   -> end
306    // end:
307    // CHECK:      ret void
308    static int x = foo();
309
310    // CHECK:      call i8* @llvm.eh.exception()
311    // CHECK:      call void @__cxa_guard_abort(i32* @_ZGVZN5test74testEvE1x)
312    // CHECK:      call void @_Unwind_Resume_or_Rethrow
313  }
314}
315
316namespace test8 {
317  struct A {
318    A();
319    ~A();
320  };
321
322  // Static and guard tested at top of file
323
324  // CHECK: define void @_ZN5test84testEv()
325  void test() {
326    // CHECK:      [[T0:%.*]] = load i32* @_ZGVZN5test84testEvE1x
327    // CHECK-NEXT: [[T1:%.*]] = and i32 [[T0]], 1
328    // CHECK-NEXT: [[T2:%.*]] = icmp eq i32 [[T1]], 0
329    // CHECK-NEXT: br i1 [[T2]]
330    //   -> fallthrough, end
331    // CHECK:      [[T3:%.*]] = call i32 @__cxa_guard_acquire(i32* @_ZGVZN5test84testEvE1x)
332    // CHECK-NEXT: [[T4:%.*]] = icmp ne i32 [[T3]], 0
333    // CHECK-NEXT: br i1 [[T4]]
334    //   -> fallthrough, end
335    // CHECK:      [[INIT:%.*]] = invoke [[TEST8A]]* @_ZN5test81AC1Ev([[TEST8A]]* @_ZZN5test84testEvE1x)
336
337    // FIXME: Here we register a global destructor that
338    // unconditionally calls the destructor.  That's what we've always
339    // done for -fno-use-cxa-atexit here, but that's really not
340    // semantically correct at all.
341
342    // CHECK:      call void @__cxa_guard_release(i32* @_ZGVZN5test84testEvE1x)
343    // CHECK-NEXT: br label
344    //   -> end
345    // end:
346    // CHECK:      ret void
347    static A x;
348
349    // CHECK:      call i8* @llvm.eh.exception()
350    // CHECK:      call void @__cxa_guard_abort(i32* @_ZGVZN5test84testEvE1x)
351    // CHECK:      call void @_Unwind_Resume_or_Rethrow
352  }
353}
354
355  // CHECK: define linkonce_odr [[C:%.*]]* @_ZTv0_n12_N5test21CD1Ev(
356  // CHECK:   call [[C]]* @_ZN5test21CD1Ev(
357  // CHECK:   ret [[C]]* undef
358
359  // CHECK: define linkonce_odr void @_ZTv0_n12_N5test21CD0Ev(
360  // CHECK:   call void @_ZN5test21CD0Ev(
361  // CHECK:   ret void
362
363// CHECK: @_GLOBAL__D_a()
364// CHECK: call %class.bar* @_ZN3barD1Ev(%class.bar* @baz)
365