0f1c1be196
We have a new policy in place making links to private resources something we try to avoid in source and test files. Normally, we'd organically switch to the new policy rather than make a sweeping change across a project. However, Clang is in a somewhat special circumstance currently: recently, I've had several new contributors run into rdar links around test code which their patch was changing the behavior of. This turns out to be a surprisingly bad experience, especially for newer folks, for a handful of reasons: not understanding what the link is and feeling intimidated by it, wondering whether their changes are actually breaking something important to a downstream in some way, having to hunt down strangers not involved with the patch to impose on them for help, accidental pressure from asking for potentially private IP to be made public, etc. Because folks run into these links entirely by chance (through fixing bugs or working on new features), there's not really a set of problematic links to focus on -- all of the links have basically the same potential for causing these problems. As a result, this is an omnibus patch to remove all such links. This was not a mechanical change; it was done by manually searching for rdar, radar, radr, and other variants to find all the various problematic links. From there, I tried to retain or reword the surrounding comments so that we would lose as little context as possible. However, because most links were just a plain link with no supporting context, the majority of the changes are simple removals. Differential Review: https://reviews.llvm.org/D158071
340 lines
8.6 KiB
C++
340 lines
8.6 KiB
C++
// RUN: %clang_cc1 -std=c++98 %s -triple x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX98
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// RUN: %clang_cc1 -std=c++17 %s -triple x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-CXX17
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struct A {
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virtual ~A();
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};
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struct B : A { };
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struct C {
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int i;
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B b;
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};
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// CHECK: _Z15test_value_initv
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void test_value_init() {
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// This value initialization requires zero initialization of the 'B'
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// subobject followed by a call to its constructor.
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// PR5800
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// CHECK: store i32 17
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// CHECK: call void @llvm.memset.p0.i64
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// CHECK: call void @_ZN1BC1Ev
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C c = { 17 } ;
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// CHECK: call void @_ZN1CD1Ev
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}
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enum enum_type { negative_number = -1, magic_number = 42 };
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class enum_holder
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{
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enum_type m_enum;
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public:
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enum_holder() : m_enum(magic_number) { }
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};
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struct enum_holder_and_int
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{
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enum_holder e;
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int i;
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};
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// CHECK: _Z24test_enum_holder_and_intv()
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void test_enum_holder_and_int() {
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// CHECK: alloca
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// CHECK-NEXT: call void @llvm.memset
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// CHECK-NEXT: call void @_ZN19enum_holder_and_intC1Ev
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enum_holder_and_int();
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// CHECK-NEXT: ret void
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}
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// PR7834: don't crash.
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namespace test1 {
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struct A {
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int A::*f;
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A();
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A(const A&);
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A &operator=(const A &);
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};
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struct B {
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A base;
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};
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void foo() {
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B();
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}
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}
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namespace ptrmem {
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struct S {
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int mem1;
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int S::*mem2;
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};
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// CHECK-LABEL: define{{.*}} i32 @_ZN6ptrmem4testEPNS_1SE
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int test(S *s) {
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// CHECK: call void @llvm.memcpy.p0.p0.i64
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// CHECK: getelementptr
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// CHECK: ret
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return s->*S().mem2;
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}
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}
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namespace PR9801 {
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struct Test {
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Test() : i(10) {}
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Test(int i) : i(i) {}
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int i;
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private:
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int j;
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};
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struct Test2 {
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Test t;
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};
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struct Test3 : public Test { };
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// CHECK-LABEL: define{{.*}} void @_ZN6PR98011fEv
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void f() {
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// CHECK-NOT: call void @llvm.memset.p0.i64
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// CHECK: call void @_ZN6PR98014TestC1Ei
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// CHECK-NOT: call void @llvm.memset.p0.i64
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// CHECK: call void @_ZN6PR98014TestC1Ev
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Test partial[3] = { 1 };
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// CHECK-NOT: call void @llvm.memset.p0.i64
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// CHECK: call void @_ZN6PR98014TestC1Ev
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// CHECK-NOT: call void @_ZN6PR98014TestC1Ev
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Test empty[3] = {};
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// CHECK: call void @llvm.memset.p0.i64
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// CHECK-NOT: call void @llvm.memset.p0.i64
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// CHECK-CXX98: call void @_ZN6PR98015Test2C1Ev
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// CHECK-CXX17: call void @_ZN6PR98014TestC1Ev
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// CHECK-NOT: call void @_ZN6PR98015Test2C1Ev
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Test2 empty2[3] = {};
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// CHECK: call void @llvm.memset.p0.i64
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// CHECK-NOT: call void @llvm.memset.p0.i64
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// CHECK-CXX98: call void @_ZN6PR98015Test3C1Ev
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// CHECK-CXX17: call void @_ZN6PR98014TestC2Ev
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// CHECK-NOT: call void @llvm.memset.p0.i64
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// CHECK-NOT: call void @_ZN6PR98015Test3C1Ev
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Test3 empty3[3] = {};
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}
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}
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namespace zeroinit {
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struct S { int i; };
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// CHECK-LABEL: define{{.*}} i32 @_ZN8zeroinit4testEv()
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int test() {
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// CHECK: call void @llvm.memset.p0.i64
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// CHECK: ret i32 0
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return S().i;
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}
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struct X0 {
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X0() { }
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int x;
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};
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struct X1 : X0 {
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int x1;
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void f();
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};
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// CHECK-LABEL: define{{.*}} void @_ZN8zeroinit9testX0_X1Ev
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void testX0_X1() {
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// CHECK: call void @llvm.memset.p0.i64
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// CHECK-NEXT: call void @_ZN8zeroinit2X1C1Ev
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// CHECK-NEXT: call void @_ZN8zeroinit2X11fEv
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X1().f();
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}
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template<typename>
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struct X2 : X0 {
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int x2;
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void f();
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};
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template<typename>
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struct X3 : X2<int> {
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X3() : X2<int>() { }
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int i;
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};
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// CHECK-LABEL: define{{.*}} void @_ZN8zeroinit9testX0_X3Ev
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void testX0_X3() {
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// CHECK-NOT: call void @llvm.memset
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// CHECK: call void @_ZN8zeroinit2X3IiEC1Ev
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// CHECK: call void @_ZN8zeroinit2X2IiE1fEv
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// CHECK-NEXT: ret void
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X3<int>().f();
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}
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// More checks at EOF
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}
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namespace PR8726 {
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class C;
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struct S {
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const C &c1;
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int i;
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const C &c2;
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};
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void f(const C& c) {
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S s = {c, 42, c};
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}
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}
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namespace test6 {
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struct A { A(); A(int); };
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void test() {
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A arr[10][20] = { 5 };
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};
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// CHECK-LABEL: define{{.*}} void @_ZN5test64testEv()
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// CHECK: [[ARR:%.*]] = alloca [10 x [20 x [[A:%.*]]]],
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// CHECK-NEXT: [[INNER:%.*]] = getelementptr inbounds [10 x [20 x [[A]]]], ptr [[ARR]], i64 0, i64 0
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// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [20 x [[A]]], ptr [[INNER]], i64 0, i64 0
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// CHECK-NEXT: call void @_ZN5test61AC1Ei(ptr {{[^,]*}} [[T0]], i32 noundef 5)
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// CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [[A]], ptr [[T0]], i64 1
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// CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [[A]], ptr [[T0]], i64 20
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// CHECK-NEXT: br label
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// CHECK: [[CUR:%.*]] = phi ptr [ [[BEGIN]], {{%.*}} ], [ [[NEXT:%.*]], {{%.*}} ]
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// CHECK-NEXT: call void @_ZN5test61AC1Ev(ptr {{[^,]*}} [[CUR]])
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// CHECK-NEXT: [[NEXT]] = getelementptr inbounds [[A]], ptr [[CUR]], i64 1
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// CHECK-NEXT: [[T0:%.*]] = icmp eq ptr [[NEXT]], [[END]]
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// CHECK-NEXT: br i1
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// CHECK: [[BEGIN:%.*]] = getelementptr inbounds [20 x [[A]]], ptr [[INNER]], i64 1
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// CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [20 x [[A]]], ptr [[INNER]], i64 10
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// CHECK-NEXT: br label
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// CHECK: [[CUR:%.*]] = phi ptr [ [[BEGIN]], {{%.*}} ], [ [[NEXT:%.*]], {{%.*}} ]
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// Inner loop.
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// CHECK-NEXT: [[IBEGIN:%.*]] = getelementptr inbounds [20 x [[A]]], ptr [[CUR]], i{{32|64}} 0, i{{32|64}} 0
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// CHECK-NEXT: [[IEND:%.*]] = getelementptr inbounds [[A]], ptr [[IBEGIN]], i64 20
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// CHECK-NEXT: br label
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// CHECK: [[ICUR:%.*]] = phi ptr [ [[IBEGIN]], {{%.*}} ], [ [[INEXT:%.*]], {{%.*}} ]
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// CHECK-NEXT: call void @_ZN5test61AC1Ev(ptr {{[^,]*}} [[ICUR]])
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// CHECK-NEXT: [[INEXT:%.*]] = getelementptr inbounds [[A]], ptr [[ICUR]], i64 1
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// CHECK-NEXT: [[T0:%.*]] = icmp eq ptr [[INEXT]], [[IEND]]
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// CHECK-NEXT: br i1 [[T0]],
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// CHECK: [[NEXT]] = getelementptr inbounds [20 x [[A]]], ptr [[CUR]], i64 1
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// CHECK-NEXT: [[T0:%.*]] = icmp eq ptr [[NEXT]], [[END]]
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// CHECK-NEXT: br i1 [[T0]]
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// CHECK: ret void
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}
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namespace PR11124 {
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// Make sure C::C doesn't overwrite parts of A while it is zero-initializing B
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struct A { int a; A(); A(int); };
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struct B : virtual A { int b; };
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struct C : B { C(); };
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C::C() : A(3), B() {}
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// CHECK-LABEL: define{{.*}} void @_ZN7PR111241CC1Ev
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// CHECK: call void @llvm.memset.p0.i64(ptr align 8 {{.*}}, i8 0, i64 12, i1 false)
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// CHECK-NEXT: call void @_ZN7PR111241BC2Ev
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// Make sure C::C doesn't overwrite parts of A while it is zero-initializing B
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struct B2 : virtual A { int B::*b; };
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struct C2 : B2 { C2(); };
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C2::C2() : A(3), B2() {}
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// CHECK-LABEL: define{{.*}} void @_ZN7PR111242C2C1Ev
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// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 %{{.*}}, ptr align 8 {{.*}}, i64 16, i1 false)
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// CHECK-NEXT: call void @_ZN7PR111242B2C2Ev
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}
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// Ensure we produce an i1 here, and don't assert.
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// CHECK-LABEL: define{{.*}} void @_Z9r170806_bv(
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// CHECK: call void @_Z9r170806_ab(i1 noundef zeroext false)
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void r170806_a(bool b = bool());
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void r170806_b() { r170806_a(); }
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namespace PR20256 {
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struct data { int i; };
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template<typename T = int>
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data g() {
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data d; // not value-init
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return d;
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}
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template data g();
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// CHECK-LABEL: define {{.*}} @_ZN7PR202561gIiEENS_4dataEv(
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// CHECK-NOT: store
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// CHECK-NOT: memset
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// CHECK: }
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template<typename ...T>
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data h(T ...t) {
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data d(t...); // value-init
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return d;
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}
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template data h();
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// CHECK-LABEL: define {{.*}} @_ZN7PR202561hIJEEENS_4dataEDpT_(
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// CHECK: call void @llvm.memset
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// CHECK: }
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template<typename T = int>
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data j() {
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data d = {}; // value-init
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return d;
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}
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template data j();
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// CHECK-LABEL: define {{.*}} @_ZN7PR202561jIiEENS_4dataEv(
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// CHECK: call void @llvm.memset
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// CHECK: }
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data f() {
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data d; // not value-init
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return d;
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}
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// CHECK-LABEL: define {{.*}} @_ZN7PR202561fEv(
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// CHECK-NOT: store
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// CHECK-NOT: memset
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// CHECK: }
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data i() {
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data d = {}; // value-init
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return d;
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}
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// CHECK-LABEL: define {{.*}} @_ZN7PR202561iEv(
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// CHECK: call void @llvm.memset
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// CHECK: }
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}
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// CHECK-LABEL: define {{.*}}@_Z20explicitly_defaultedv
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int explicitly_defaulted() {
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struct A { A() = default; int n; };
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// CHECK: call void @llvm.memset
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A a = A();
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return a.n;
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} // CHECK-LABEL: }
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// CHECK-LABEL: define linkonce_odr void @_ZN8zeroinit2X3IiEC2Ev(ptr {{[^,]*}} %this) unnamed_addr
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// CHECK: call void @llvm.memset.p0.i64
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// CHECK-NEXT: call void @_ZN8zeroinit2X2IiEC2Ev
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// CHECK-NEXT: ret void
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#if __cplusplus >= 201103L
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namespace transparent_init_list {
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struct optional_assign_base {};
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struct optional_data_dtor_base { char dummy_[24]; };
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struct optional : optional_data_dtor_base, optional_assign_base {};
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optional f(optional a) { return {optional(a)}; }
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}
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#endif
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