160 lines
6.6 KiB
C++
160 lines
6.6 KiB
C++
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 %s -emit-llvm -o - | FileCheck %s
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// PR10878
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struct S { S(); S(int); ~S(); int n; };
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void *p = new S[2][3]{ { 1, 2, 3 }, { 4, 5, 6 } };
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// CHECK-LABEL: define
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// CHECK: %[[ALLOC:.*]] = call noalias nonnull i8* @_Znam(i64 32)
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// CHECK: %[[COOKIE:.*]] = bitcast i8* %[[ALLOC]] to i64*
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// CHECK: store i64 6, i64* %[[COOKIE]]
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// CHECK: %[[START_AS_i8:.*]] = getelementptr inbounds i8, i8* %[[ALLOC]], i64 8
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// CHECK: %[[START_AS_S:.*]] = bitcast i8* %[[START_AS_i8]] to %[[S:.*]]*
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//
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// Explicit initializers:
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//
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// { 1, 2, 3 }
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//
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// CHECK: %[[S_0:.*]] = bitcast %[[S]]* %[[START_AS_S]] to [3 x %[[S]]]*
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//
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// CHECK: %[[S_0_0:.*]] = getelementptr inbounds [3 x %[[S]]], [3 x %[[S]]]* %[[S_0]], i64 0, i64 0
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_0_0]], i32 1)
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// CHECK: %[[S_0_1:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_0_0]], i64 1
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_0_1]], i32 2)
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// CHECK: %[[S_0_2:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_0_1]], i64 1
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_0_2]], i32 3)
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//
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// { 4, 5, 6 }
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//
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// CHECK: %[[S_1:.*]] = getelementptr inbounds [3 x %[[S]]], [3 x %[[S]]]* %[[S_0]], i64 1
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//
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// CHECK: %[[S_1_0:.*]] = getelementptr inbounds [3 x %[[S]]], [3 x %[[S]]]* %[[S_1]], i64 0, i64 0
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_1_0]], i32 4)
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// CHECK: %[[S_1_1:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_1_0]], i64 1
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_1_1]], i32 5)
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// CHECK: %[[S_1_2:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_1_1]], i64 1
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_1_2]], i32 6)
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//
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// CHECK-NOT: br i1
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// CHECK-NOT: call
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// CHECK: }
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int n;
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void *q = new S[n][3]{ { 1, 2, 3 }, { 4, 5, 6 } };
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// CHECK-LABEL: define
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//
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// CHECK: load i32, i32* @n
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// CHECK: call {{.*}} @llvm.umul.with.overflow.i64(i64 %[[N:.*]], i64 12)
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// CHECK: %[[ELTS:.*]] = mul i64 %[[N]], 3
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// CHECK: call {{.*}} @llvm.uadd.with.overflow.i64(i64 %{{.*}}, i64 8)
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// CHECK: %[[ALLOC:.*]] = call noalias nonnull i8* @_Znam(i64 %{{.*}})
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//
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// CHECK: %[[COOKIE:.*]] = bitcast i8* %[[ALLOC]] to i64*
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// CHECK: store i64 %[[ELTS]], i64* %[[COOKIE]]
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// CHECK: %[[START_AS_i8:.*]] = getelementptr inbounds i8, i8* %[[ALLOC]], i64 8
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// CHECK: %[[START_AS_S:.*]] = bitcast i8* %[[START_AS_i8]] to %[[S]]*
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//
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// Explicit initializers:
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//
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// { 1, 2, 3 }
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//
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// CHECK: %[[S_0:.*]] = bitcast %[[S]]* %[[START_AS_S]] to [3 x %[[S]]]*
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//
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// CHECK: %[[S_0_0:.*]] = getelementptr inbounds [3 x %[[S]]], [3 x %[[S]]]* %[[S_0]], i64 0, i64 0
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_0_0]], i32 1)
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// CHECK: %[[S_0_1:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_0_0]], i64 1
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_0_1]], i32 2)
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// CHECK: %[[S_0_2:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_0_1]], i64 1
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_0_2]], i32 3)
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//
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// { 4, 5, 6 }
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//
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// CHECK: %[[S_1:.*]] = getelementptr inbounds [3 x %[[S]]], [3 x %[[S]]]* %[[S_0]], i64 1
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//
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// CHECK: %[[S_1_0:.*]] = getelementptr inbounds [3 x %[[S]]], [3 x %[[S]]]* %[[S_1]], i64 0, i64 0
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_1_0]], i32 4)
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// CHECK: %[[S_1_1:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_1_0]], i64 1
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_1_1]], i32 5)
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// CHECK: %[[S_1_2:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_1_1]], i64 1
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// CHECK: call void @_ZN1SC1Ei(%[[S]]* {{[^,]*}} %[[S_1_2]], i32 6)
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//
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// And the rest.
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//
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// CHECK: %[[S_2:.*]] = getelementptr inbounds [3 x %[[S]]], [3 x %[[S]]]* %[[S_1]], i64 1
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// CHECK: %[[S_2_AS_S:.*]] = bitcast [3 x %[[S]]]* %[[S_2]] to %[[S]]*
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//
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// CHECK: %[[REST:.*]] = sub i64 %[[ELTS]], 6
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// CHECK: icmp eq i64 %[[REST]], 0
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// CHECK: br i1
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//
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// CHECK: %[[END:.*]] = getelementptr inbounds %[[S]], %[[S]]* %[[S_2_AS_S]], i64 %[[REST]]
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// CHECK: br label
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//
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// CHECK: %[[CUR:.*]] = phi %[[S]]* [ %[[S_2_AS_S]], {{.*}} ], [ %[[NEXT:.*]], {{.*}} ]
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// CHECK: call void @_ZN1SC1Ev(%[[S]]* {{[^,]*}} %[[CUR]])
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// CHECK: %[[NEXT]] = getelementptr inbounds %[[S]], %[[S]]* %[[CUR]], i64 1
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// CHECK: icmp eq %[[S]]* %[[NEXT]], %[[END]]
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// CHECK: br i1
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//
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// CHECK: }
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struct T { int a; };
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void *r = new T[n][3]{ { 1, 2, 3 }, { 4, 5, 6 } };
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// CHECK-LABEL: define
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//
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// CHECK: load i32, i32* @n
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// CHECK: call {{.*}} @llvm.umul.with.overflow.i64(i64 %[[N:.*]], i64 12)
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// CHECK: %[[ELTS:.*]] = mul i64 %[[N]], 3
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//
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// No cookie.
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// CHECK-NOT: @llvm.uadd.with.overflow
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//
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// CHECK: %[[ALLOC:.*]] = call noalias nonnull i8* @_Znam(i64 %{{.*}})
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//
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// CHECK: %[[START_AS_T:.*]] = bitcast i8* %[[ALLOC]] to %[[T:.*]]*
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//
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// Explicit initializers:
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//
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// { 1, 2, 3 }
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//
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// CHECK: %[[T_0:.*]] = bitcast %[[T]]* %[[START_AS_T]] to [3 x %[[T]]]*
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//
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// CHECK: %[[T_0_0:.*]] = getelementptr inbounds [3 x %[[T]]], [3 x %[[T]]]* %[[T_0]], i64 0, i64 0
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// CHECK: %[[T_0_0_0:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_0_0]], i32 0, i32 0
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// CHECK: store i32 1, i32* %[[T_0_0_0]]
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// CHECK: %[[T_0_1:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_0_0]], i64 1
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// CHECK: %[[T_0_1_0:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_0_1]], i32 0, i32 0
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// CHECK: store i32 2, i32* %[[T_0_1_0]]
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// CHECK: %[[T_0_2:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_0_1]], i64 1
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// CHECK: %[[T_0_2_0:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_0_2]], i32 0, i32 0
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// CHECK: store i32 3, i32* %[[T_0_2_0]]
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//
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// { 4, 5, 6 }
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//
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// CHECK: %[[T_1:.*]] = getelementptr inbounds [3 x %[[T]]], [3 x %[[T]]]* %[[T_0]], i64 1
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//
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// CHECK: %[[T_1_0:.*]] = getelementptr inbounds [3 x %[[T]]], [3 x %[[T]]]* %[[T_1]], i64 0, i64 0
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// CHECK: %[[T_1_0_0:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_1_0]], i32 0, i32 0
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// CHECK: store i32 4, i32* %[[T_1_0_0]]
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// CHECK: %[[T_1_1:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_1_0]], i64 1
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// CHECK: %[[T_1_1_0:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_1_1]], i32 0, i32 0
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// CHECK: store i32 5, i32* %[[T_1_1_0]]
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// CHECK: %[[T_1_2:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_1_1]], i64 1
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// CHECK: %[[T_1_2_0:.*]] = getelementptr inbounds %[[T]], %[[T]]* %[[T_1_2]], i32 0, i32 0
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// CHECK: store i32 6, i32* %[[T_1_2_0]]
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//
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// And the rest gets memset to 0.
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//
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// CHECK: %[[T_2:.*]] = getelementptr inbounds [3 x %[[T]]], [3 x %[[T]]]* %[[T_1]], i64 1
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// CHECK: %[[T_2_AS_T:.*]] = bitcast [3 x %[[T]]]* %[[T_2]] to %[[T]]*
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//
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// CHECK: %[[SIZE:.*]] = sub i64 %{{.*}}, 24
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// CHECK: %[[REST:.*]] = bitcast %[[T]]* %[[T_2_AS_T]] to i8*
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// CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %[[REST]], i8 0, i64 %[[SIZE]], i1 false)
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//
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// CHECK: }
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