1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 %s -emit-llvm -o - | FileCheck %s 2 3 // PR10878 4 5 struct S { S(); S(int); ~S(); int n; }; 6 7 void *p = new S[2][3]{ { 1, 2, 3 }, { 4, 5, 6 } }; 8 9 // CHECK-LABEL: define 10 // CHECK: %[[ALLOC:.*]] = call noalias noundef nonnull ptr @_Znam(i64 noundef 32) 11 // CHECK: store i64 6, ptr %[[ALLOC]] 12 // CHECK: %[[START_AS_i8:.*]] = getelementptr inbounds i8, ptr %[[ALLOC]], i64 8 13 // 14 // Explicit initializers: 15 // 16 // { 1, 2, 3 } 17 // 18 // 19 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[START_AS_i8]], i32 noundef 1) 20 // CHECK: %[[S_0_1:.*]] = getelementptr inbounds %[[S:.+]], ptr %[[START_AS_i8]], i64 1 21 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_0_1]], i32 noundef 2) 22 // CHECK: %[[S_0_2:.*]] = getelementptr inbounds %[[S]], ptr %[[START_AS_i8]], i64 2 23 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_0_2]], i32 noundef 3) 24 // 25 // { 4, 5, 6 } 26 // 27 // CHECK: %[[S_1:.*]] = getelementptr inbounds [3 x %[[S]]], ptr %[[START_AS_i8]], i64 1 28 // 29 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_1]], i32 noundef 4) 30 // CHECK: %[[S_1_1:.*]] = getelementptr inbounds %[[S]], ptr %[[S_1]], i64 1 31 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_1_1]], i32 noundef 5) 32 // CHECK: %[[S_1_2:.*]] = getelementptr inbounds %[[S]], ptr %[[S_1]], i64 2 33 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_1_2]], i32 noundef 6) 34 // 35 // CHECK-NOT: br i1 36 // CHECK-NOT: call 37 // CHECK: } 38 39 int n; 40 void *q = new S[n][3]{ { 1, 2, 3 }, { 4, 5, 6 } }; 41 42 // CHECK-LABEL: define 43 // 44 // CHECK: load i32, ptr @n 45 // CHECK: call {{.*}} @llvm.umul.with.overflow.i64(i64 %[[N:.*]], i64 12) 46 // CHECK: %[[ELTS:.*]] = mul i64 %[[N]], 3 47 // CHECK: call {{.*}} @llvm.uadd.with.overflow.i64(i64 %{{.*}}, i64 8) 48 // CHECK: %[[ALLOC:.*]] = call noalias noundef nonnull ptr @_Znam(i64 noundef %{{.*}}) 49 // 50 // CHECK: store i64 %[[ELTS]], ptr %[[ALLOC]] 51 // CHECK: %[[START_AS_i8:.*]] = getelementptr inbounds i8, ptr %[[ALLOC]], i64 8 52 // 53 // Explicit initializers: 54 // 55 // { 1, 2, 3 } 56 // 57 // 58 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[START_AS_i8]], i32 noundef 1) 59 // CHECK: %[[S_0_1:.*]] = getelementptr inbounds %[[S]], ptr %[[START_AS_i8]], i64 1 60 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_0_1]], i32 noundef 2) 61 // CHECK: %[[S_0_2:.*]] = getelementptr inbounds %[[S]], ptr %[[START_AS_i8]], i64 2 62 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_0_2]], i32 noundef 3) 63 // 64 // { 4, 5, 6 } 65 // 66 // CHECK: %[[S_1:.*]] = getelementptr inbounds [3 x %[[S]]], ptr %[[START_AS_i8]], i64 1 67 // 68 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_1]], i32 noundef 4) 69 // CHECK: %[[S_1_1:.*]] = getelementptr inbounds %[[S]], ptr %[[S_1]], i64 1 70 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_1_1]], i32 noundef 5) 71 // CHECK: %[[S_1_2:.*]] = getelementptr inbounds %[[S]], ptr %[[S_1]], i64 2 72 // CHECK: call void @_ZN1SC1Ei(ptr {{[^,]*}} %[[S_1_2]], i32 noundef 6) 73 // 74 // And the rest. 75 // 76 // CHECK: %[[S_2:.*]] = getelementptr inbounds [3 x %[[S]]], ptr %[[S_1]], i64 1 77 // 78 // CHECK: %[[REST:.*]] = sub i64 %[[ELTS]], 6 79 // CHECK: icmp eq i64 %[[REST]], 0 80 // CHECK: br i1 81 // 82 // CHECK: %[[END:.*]] = getelementptr inbounds %[[S]], ptr %[[S_2]], i64 %[[REST]] 83 // CHECK: br label 84 // 85 // CHECK: %[[CUR:.*]] = phi ptr [ %[[S_2]], {{.*}} ], [ %[[NEXT:.*]], {{.*}} ] 86 // CHECK: call void @_ZN1SC1Ev(ptr {{[^,]*}} %[[CUR]]) 87 // CHECK: %[[NEXT]] = getelementptr inbounds %[[S]], ptr %[[CUR]], i64 1 88 // CHECK: icmp eq ptr %[[NEXT]], %[[END]] 89 // CHECK: br i1 90 // 91 // CHECK: } 92 93 struct T { int a; }; 94 void *r = new T[n][3]{ { 1, 2, 3 }, { 4, 5, 6 } }; 95 96 // CHECK-LABEL: define 97 // 98 // CHECK: load i32, ptr @n 99 // CHECK: call {{.*}} @llvm.umul.with.overflow.i64(i64 %[[N:.*]], i64 12) 100 // CHECK: %[[ELTS:.*]] = mul i64 %[[N]], 3 101 // 102 // No cookie. 103 // CHECK-NOT: @llvm.uadd.with.overflow 104 // 105 // CHECK: %[[ALLOC:.*]] = call noalias noundef nonnull ptr @_Znam(i64 noundef %{{.*}}) 106 // 107 // 108 // Explicit initializers: 109 // 110 // { 1, 2, 3 } 111 // 112 // 113 // CHECK: %[[T_0_0_0:.*]] = getelementptr inbounds nuw %[[T:.+]], ptr %[[ALLOC]], i32 0, i32 0 114 // CHECK: store i32 1, ptr %[[T_0_0_0]] 115 // CHECK: %[[T_0_1:.*]] = getelementptr inbounds %[[T]], ptr %[[ALLOC]], i64 1 116 // CHECK: %[[T_0_1_0:.*]] = getelementptr inbounds nuw %[[T]], ptr %[[T_0_1]], i32 0, i32 0 117 // CHECK: store i32 2, ptr %[[T_0_1_0]] 118 // CHECK: %[[T_0_2:.*]] = getelementptr inbounds %[[T]], ptr %[[ALLOC]], i64 2 119 // CHECK: %[[T_0_2_0:.*]] = getelementptr inbounds nuw %[[T]], ptr %[[T_0_2]], i32 0, i32 0 120 // CHECK: store i32 3, ptr %[[T_0_2_0]] 121 // 122 // { 4, 5, 6 } 123 // 124 // CHECK: %[[T_1:.*]] = getelementptr inbounds [3 x %[[T]]], ptr %[[ALLOC]], i64 1 125 // 126 // CHECK: %[[T_1_0_0:.*]] = getelementptr inbounds nuw %[[T]], ptr %[[T_1]], i32 0, i32 0 127 // CHECK: store i32 4, ptr %[[T_1_0_0]] 128 // CHECK: %[[T_1_1:.*]] = getelementptr inbounds %[[T]], ptr %[[T_1]], i64 1 129 // CHECK: %[[T_1_1_0:.*]] = getelementptr inbounds nuw %[[T]], ptr %[[T_1_1]], i32 0, i32 0 130 // CHECK: store i32 5, ptr %[[T_1_1_0]] 131 // CHECK: %[[T_1_2:.*]] = getelementptr inbounds %[[T]], ptr %[[T_1]], i64 2 132 // CHECK: %[[T_1_2_0:.*]] = getelementptr inbounds nuw %[[T]], ptr %[[T_1_2]], i32 0, i32 0 133 // CHECK: store i32 6, ptr %[[T_1_2_0]] 134 // 135 // And the rest gets memset to 0. 136 // 137 // CHECK: %[[T_2:.*]] = getelementptr inbounds [3 x %[[T]]], ptr %[[T_1]], i64 1 138 // 139 // CHECK: %[[SIZE:.*]] = sub i64 %{{.*}}, 24 140 // CHECK: call void @llvm.memset.p0.i64(ptr align 4 %[[T_2]], i8 0, i64 %[[SIZE]], i1 false) 141 // 142 // CHECK: } 143