1 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s
2
3 struct ClassWithoutDtor {
4 char x;
5 };
6
check_array_no_cookies()7 void check_array_no_cookies() {
8 // CHECK: define dso_local void @"?check_array_no_cookies@@YAXXZ"() [[NUW:#[0-9]+]]
9
10 // CHECK: call noalias nonnull i8* @"??_U@YAPAXI@Z"(i32 42)
11 ClassWithoutDtor *array = new ClassWithoutDtor[42];
12
13 // CHECK: call void @"??_V@YAXPAX@Z"(
14 delete [] array;
15
16 }
17
18 struct ClassWithDtor {
19 char x;
~ClassWithDtorClassWithDtor20 ~ClassWithDtor() {}
21 };
22
check_array_cookies_simple()23 void check_array_cookies_simple() {
24 // CHECK: define {{.*}} @"?check_array_cookies_simple@@YAXXZ"()
25
26 ClassWithDtor *array = new ClassWithDtor[42];
27 // CHECK: [[ALLOCATED:%.*]] = call noalias nonnull i8* @"??_U@YAPAXI@Z"(i32 46)
28 // 46 = 42 + size of cookie (4)
29 // CHECK: [[COOKIE:%.*]] = bitcast i8* [[ALLOCATED]] to i32*
30 // CHECK: store i32 42, i32* [[COOKIE]]
31 // CHECK: [[ARRAY:%.*]] = getelementptr inbounds i8, i8* [[ALLOCATED]], i32 4
32 // CHECK: bitcast i8* [[ARRAY]] to [[CLASS:%.*]]*
33
34 delete [] array;
35 // CHECK: [[ARRAY_AS_CHAR:%.*]] = bitcast [[CLASS]]* {{%.*}} to i8*
36 // CHECK: getelementptr inbounds i8, i8* [[ARRAY_AS_CHAR]], i32 -4
37 }
38
39 struct __attribute__((aligned(8))) ClassWithAlignment {
40 // FIXME: replace __attribute__((aligned(8))) with __declspec(align(8)) once
41 // http://llvm.org/bugs/show_bug.cgi?id=12631 is fixed.
42 int *x, *y;
~ClassWithAlignmentClassWithAlignment43 ~ClassWithAlignment() {}
44 };
45
check_array_cookies_aligned()46 void check_array_cookies_aligned() {
47 // CHECK: define {{.*}} @"?check_array_cookies_aligned@@YAXXZ"()
48 ClassWithAlignment *array = new ClassWithAlignment[42];
49 // CHECK: [[ALLOCATED:%.*]] = call noalias nonnull i8* @"??_U@YAPAXI@Z"(i32 344)
50 // 344 = 42*8 + size of cookie (8, due to alignment)
51 // CHECK: [[COOKIE:%.*]] = bitcast i8* [[ALLOCATED]] to i32*
52 // CHECK: store i32 42, i32* [[COOKIE]]
53 // CHECK: [[ARRAY:%.*]] = getelementptr inbounds i8, i8* [[ALLOCATED]], i32 8
54 // CHECK: bitcast i8* [[ARRAY]] to [[CLASS:%.*]]*
55
56 delete [] array;
57 // CHECK: [[ARRAY_AS_CHAR:%.*]] = bitcast [[CLASS]]*
58 // CHECK: getelementptr inbounds i8, i8* [[ARRAY_AS_CHAR]], i32 -8
59 }
60
61 namespace PR23990 {
62 struct S {
63 char x[42];
64 void operator delete[](void *p, __SIZE_TYPE__);
65 // CHECK-LABEL: define dso_local void @"?delete_s@PR23990@@YAXPAUS@1@@Z"(
66 // CHECK: call void @"??_VS@PR23990@@SAXPAXI@Z"(i8* {{.*}}, i32 42)
67 };
delete_s(S * s)68 void delete_s(S *s) { delete[] s; }
69 }
70
71 // CHECK: attributes [[NUW]] = { mustprogress noinline nounwind{{.*}} }
72