1 // RUN: %clang_cc1 -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s 2 3 struct ClassWithoutDtor { 4 char x; 5 }; 6 7 void check_array_no_cookies() { 8 // CHECK: define void @"\01?check_array_no_cookies@@YAXXZ"() [[NUW:#[0-9]+]] 9 10 // CHECK: call noalias i8* @"\01??_U@YAPAXI@Z"(i32 42) 11 ClassWithoutDtor *array = new ClassWithoutDtor[42]; 12 13 // CHECK: call void @"\01??_V@YAXPAX@Z"( 14 delete [] array; 15 16 } 17 18 struct ClassWithDtor { 19 char x; 20 ~ClassWithDtor() {} 21 }; 22 23 void check_array_cookies_simple() { 24 // CHECK: define {{.*}} @"\01?check_array_cookies_simple@@YAXXZ"() 25 26 ClassWithDtor *array = new ClassWithDtor[42]; 27 // CHECK: [[ALLOCATED:%.*]] = call noalias i8* @"\01??_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* [[ALLOCATED]], i64 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* [[ARRAY_AS_CHAR]], i64 -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; 43 ~ClassWithAlignment() {} 44 }; 45 46 void check_array_cookies_aligned() { 47 // CHECK: define {{.*}} @"\01?check_array_cookies_aligned@@YAXXZ"() 48 ClassWithAlignment *array = new ClassWithAlignment[42]; 49 // CHECK: [[ALLOCATED:%.*]] = call noalias i8* @"\01??_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* [[ALLOCATED]], i64 8 54 // CHECK: bitcast i8* [[ARRAY]] to [[CLASS:%.*]]* 55 56 delete [] array; 57 // CHECK: [[ARRAY_AS_CHAR:%.*]] = bitcast [[CLASS]]* 58 // CHECK: getelementptr inbounds i8* [[ARRAY_AS_CHAR]], i64 -8 59 } 60 61 // CHECK: attributes [[NUW]] = { nounwind{{.*}} } 62
