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 i8* @_Znam(i64 32) 11 // CHECK: %[[COOKIE:.*]] = bitcast i8* %[[ALLOC]] to i64* 12 // CHECK: store i64 6, i64* %[[COOKIE]] 13 // CHECK: %[[START_AS_i8:.*]] = getelementptr inbounds i8* %[[ALLOC]], i64 8 14 // CHECK: %[[START_AS_S:.*]] = bitcast i8* %[[START_AS_i8]] to %[[S:.*]]* 15 // 16 // Explicit initializers: 17 // 18 // { 1, 2, 3 } 19 // 20 // CHECK: %[[S_0:.*]] = bitcast %[[S]]* %[[START_AS_S]] to [3 x %[[S]]]* 21 // 22 // CHECK: %[[S_0_0:.*]] = getelementptr inbounds [3 x %[[S]]]* %[[S_0]], i64 0, i64 0 23 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_0_0]], i32 1) 24 // CHECK: %[[S_0_1:.*]] = getelementptr inbounds %[[S]]* %[[S_0_0]], i64 1 25 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_0_1]], i32 2) 26 // CHECK: %[[S_0_2:.*]] = getelementptr inbounds %[[S]]* %[[S_0_1]], i64 1 27 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_0_2]], i32 3) 28 // 29 // { 4, 5, 6 } 30 // 31 // CHECK: %[[S_1:.*]] = getelementptr inbounds [3 x %[[S]]]* %[[S_0]], i32 1 32 // 33 // CHECK: %[[S_1_0:.*]] = getelementptr inbounds [3 x %[[S]]]* %[[S_1]], i64 0, i64 0 34 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_1_0]], i32 4) 35 // CHECK: %[[S_1_1:.*]] = getelementptr inbounds %[[S]]* %[[S_1_0]], i64 1 36 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_1_1]], i32 5) 37 // CHECK: %[[S_1_2:.*]] = getelementptr inbounds %[[S]]* %[[S_1_1]], i64 1 38 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_1_2]], i32 6) 39 // 40 // CHECK-NOT: br i1 41 // CHECK-NOT: call 42 // CHECK: } 43 44 int n; 45 void *q = new S[n][3]{ { 1, 2, 3 }, { 4, 5, 6 } }; 46 47 // CHECK-LABEL: define 48 // 49 // CHECK: load i32* @n 50 // CHECK: call {{.*}} @llvm.umul.with.overflow.i64(i64 %[[N:.*]], i64 12) 51 // CHECK: %[[ELTS:.*]] = mul i64 %[[N]], 3 52 // CHECK: call {{.*}} @llvm.uadd.with.overflow.i64(i64 %{{.*}}, i64 8) 53 // CHECK: %[[ALLOC:.*]] = call noalias i8* @_Znam(i64 %{{.*}}) 54 // 55 // CHECK: %[[COOKIE:.*]] = bitcast i8* %[[ALLOC]] to i64* 56 // CHECK: store i64 %[[ELTS]], i64* %[[COOKIE]] 57 // CHECK: %[[START_AS_i8:.*]] = getelementptr inbounds i8* %[[ALLOC]], i64 8 58 // CHECK: %[[START_AS_S:.*]] = bitcast i8* %[[START_AS_i8]] to %[[S]]* 59 // 60 // Explicit initializers: 61 // 62 // { 1, 2, 3 } 63 // 64 // CHECK: %[[S_0:.*]] = bitcast %[[S]]* %[[START_AS_S]] to [3 x %[[S]]]* 65 // 66 // CHECK: %[[S_0_0:.*]] = getelementptr inbounds [3 x %[[S]]]* %[[S_0]], i64 0, i64 0 67 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_0_0]], i32 1) 68 // CHECK: %[[S_0_1:.*]] = getelementptr inbounds %[[S]]* %[[S_0_0]], i64 1 69 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_0_1]], i32 2) 70 // CHECK: %[[S_0_2:.*]] = getelementptr inbounds %[[S]]* %[[S_0_1]], i64 1 71 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_0_2]], i32 3) 72 // 73 // { 4, 5, 6 } 74 // 75 // CHECK: %[[S_1:.*]] = getelementptr inbounds [3 x %[[S]]]* %[[S_0]], i32 1 76 // 77 // CHECK: %[[S_1_0:.*]] = getelementptr inbounds [3 x %[[S]]]* %[[S_1]], i64 0, i64 0 78 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_1_0]], i32 4) 79 // CHECK: %[[S_1_1:.*]] = getelementptr inbounds %[[S]]* %[[S_1_0]], i64 1 80 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_1_1]], i32 5) 81 // CHECK: %[[S_1_2:.*]] = getelementptr inbounds %[[S]]* %[[S_1_1]], i64 1 82 // CHECK: call void @_ZN1SC1Ei(%[[S]]* %[[S_1_2]], i32 6) 83 // 84 // And the rest. 85 // 86 // CHECK: %[[S_2:.*]] = getelementptr inbounds [3 x %[[S]]]* %[[S_1]], i32 1 87 // CHECK: %[[S_2_AS_S:.*]] = bitcast [3 x %[[S]]]* %[[S_2]] to %[[S]]* 88 // 89 // CHECK: %[[REST:.*]] = sub i64 %[[ELTS]], 6 90 // CHECK: icmp eq i64 %[[REST]], 0 91 // CHECK: br i1 92 // 93 // CHECK: %[[END:.*]] = getelementptr inbounds %[[S]]* %[[S_2_AS_S]], i64 %[[REST]] 94 // CHECK: br label 95 // 96 // CHECK: %[[CUR:.*]] = phi %[[S]]* [ %[[S_2_AS_S]], {{.*}} ], [ %[[NEXT:.*]], {{.*}} ] 97 // CHECK: call void @_ZN1SC1Ev(%[[S]]* %[[CUR]]) 98 // CHECK: %[[NEXT]] = getelementptr inbounds %[[S]]* %[[CUR]], i64 1 99 // CHECK: icmp eq %[[S]]* %[[NEXT]], %[[END]] 100 // CHECK: br i1 101 // 102 // CHECK: } 103 104 struct T { int a; }; 105 void *r = new T[n][3]{ { 1, 2, 3 }, { 4, 5, 6 } }; 106 107 // CHECK-LABEL: define 108 // 109 // CHECK: load i32* @n 110 // CHECK: call {{.*}} @llvm.umul.with.overflow.i64(i64 %[[N:.*]], i64 12) 111 // CHECK: %[[ELTS:.*]] = mul i64 %[[N]], 3 112 // 113 // No cookie. 114 // CHECK-NOT: @llvm.uadd.with.overflow 115 // 116 // CHECK: %[[ALLOC:.*]] = call noalias i8* @_Znam(i64 %{{.*}}) 117 // 118 // CHECK: %[[START_AS_T:.*]] = bitcast i8* %[[ALLOC]] to %[[T:.*]]* 119 // 120 // Explicit initializers: 121 // 122 // { 1, 2, 3 } 123 // 124 // CHECK: %[[T_0:.*]] = bitcast %[[T]]* %[[START_AS_T]] to [3 x %[[T]]]* 125 // 126 // CHECK: %[[T_0_0:.*]] = getelementptr inbounds [3 x %[[T]]]* %[[T_0]], i64 0, i64 0 127 // CHECK: %[[T_0_0_0:.*]] = getelementptr inbounds %[[T]]* %[[T_0_0]], i32 0, i32 0 128 // CHECK: store i32 1, i32* %[[T_0_0_0]] 129 // CHECK: %[[T_0_1:.*]] = getelementptr inbounds %[[T]]* %[[T_0_0]], i64 1 130 // CHECK: %[[T_0_1_0:.*]] = getelementptr inbounds %[[T]]* %[[T_0_1]], i32 0, i32 0 131 // CHECK: store i32 2, i32* %[[T_0_1_0]] 132 // CHECK: %[[T_0_2:.*]] = getelementptr inbounds %[[T]]* %[[T_0_1]], i64 1 133 // CHECK: %[[T_0_2_0:.*]] = getelementptr inbounds %[[T]]* %[[T_0_2]], i32 0, i32 0 134 // CHECK: store i32 3, i32* %[[T_0_2_0]] 135 // 136 // { 4, 5, 6 } 137 // 138 // CHECK: %[[T_1:.*]] = getelementptr inbounds [3 x %[[T]]]* %[[T_0]], i32 1 139 // 140 // CHECK: %[[T_1_0:.*]] = getelementptr inbounds [3 x %[[T]]]* %[[T_1]], i64 0, i64 0 141 // CHECK: %[[T_1_0_0:.*]] = getelementptr inbounds %[[T]]* %[[T_1_0]], i32 0, i32 0 142 // CHECK: store i32 4, i32* %[[T_1_0_0]] 143 // CHECK: %[[T_1_1:.*]] = getelementptr inbounds %[[T]]* %[[T_1_0]], i64 1 144 // CHECK: %[[T_1_1_0:.*]] = getelementptr inbounds %[[T]]* %[[T_1_1]], i32 0, i32 0 145 // CHECK: store i32 5, i32* %[[T_1_1_0]] 146 // CHECK: %[[T_1_2:.*]] = getelementptr inbounds %[[T]]* %[[T_1_1]], i64 1 147 // CHECK: %[[T_1_2_0:.*]] = getelementptr inbounds %[[T]]* %[[T_1_2]], i32 0, i32 0 148 // CHECK: store i32 6, i32* %[[T_1_2_0]] 149 // 150 // And the rest gets memset to 0. 151 // 152 // CHECK: %[[T_2:.*]] = getelementptr inbounds [3 x %[[T]]]* %[[T_1]], i32 1 153 // CHECK: %[[T_2_AS_T:.*]] = bitcast [3 x %[[T]]]* %[[T_2]] to %[[T]]* 154 // 155 // CHECK: %[[SIZE:.*]] = sub i64 %{{.*}}, 24 156 // CHECK: %[[REST:.*]] = bitcast %[[T]]* %[[T_2_AS_T]] to i8* 157 // CHECK: call void @llvm.memset.p0i8.i64(i8* %[[REST]], i8 0, i64 %[[SIZE]], i32 4, i1 false) 158 // 159 // CHECK: } 160 161