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This is a follow on from a similar LLVM commit: r253511. Note, this was reviewed (and more details are in) http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151109/312083.html These intrinsics currently have an explicit alignment argument which is required to be a constant integer. It represents the alignment of the source and dest, and so must be the minimum of those. This change allows source and dest to each have their own alignments by using the alignment attribute on their arguments. The alignment argument itself is removed. The only code change to clang is hidden in CGBuilder.h which now passes both dest and source alignment to IRBuilder, instead of taking the minimum of dest and source alignments. Reviewed by Hal Finkel. llvm-svn: 253512
322 lines
8.0 KiB
C++
322 lines
8.0 KiB
C++
// RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
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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.p0i8.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: bitcast
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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.p0i8.p0i8.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.p0i8.i64
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// CHECK: call void @_ZN6PR98014TestC1Ei
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// CHECK-NOT: call void @llvm.memset.p0i8.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.p0i8.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.p0i8.i64
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// CHECK-NOT: call void @llvm.memset.p0i8.i64
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// CHECK: call void @_ZN6PR98015Test2C1Ev
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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.p0i8.i64
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// CHECK-NOT: call void @llvm.memset.p0i8.i64
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// CHECK: call void @_ZN6PR98015Test3C1Ev
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// CHECK-NOT: call void @llvm.memset.p0i8.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.p0i8.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.p0i8.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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// rdar://problem/9355931
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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]]]], [10 x [20 x [[A]]]]* [[ARR]], i64 0, i64 0
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// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [20 x [[A]]], [20 x [[A]]]* [[INNER]], i64 0, i64 0
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// CHECK-NEXT: call void @_ZN5test61AC1Ei([[A]]* [[T0]], i32 5)
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// CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [[A]], [[A]]* [[T0]], i64 1
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// CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[T0]], i64 20
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// CHECK-NEXT: br label
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// CHECK: [[CUR:%.*]] = phi [[A]]* [ [[BEGIN]], {{%.*}} ], [ [[NEXT:%.*]], {{%.*}} ]
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// CHECK-NEXT: call void @_ZN5test61AC1Ev([[A]]* [[CUR]])
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// CHECK-NEXT: [[NEXT]] = getelementptr inbounds [[A]], [[A]]* [[CUR]], i64 1
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// CHECK-NEXT: [[T0:%.*]] = icmp eq [[A]]* [[NEXT]], [[END]]
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// CHECK-NEXT: br i1
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// CHECK: [[BEGIN:%.*]] = getelementptr inbounds [20 x [[A]]], [20 x [[A]]]* [[INNER]], i64 1
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// CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [20 x [[A]]], [20 x [[A]]]* [[INNER]], i64 10
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// CHECK-NEXT: br label
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// CHECK: [[CUR:%.*]] = phi [20 x [[A]]]* [ [[BEGIN]], {{%.*}} ], [ [[NEXT:%.*]], {{%.*}} ]
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// Inner loop.
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// CHECK-NEXT: [[IBEGIN:%.*]] = getelementptr inbounds [20 x [[A]]], [20 x [[A]]]* [[CUR]], i32 0, i32 0
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// CHECK-NEXT: [[IEND:%.*]] = getelementptr inbounds [[A]], [[A]]* [[IBEGIN]], i64 20
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// CHECK-NEXT: br label
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// CHECK: [[ICUR:%.*]] = phi [[A]]* [ [[IBEGIN]], {{%.*}} ], [ [[INEXT:%.*]], {{%.*}} ]
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// CHECK-NEXT: call void @_ZN5test61AC1Ev([[A]]* [[ICUR]])
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// CHECK-NEXT: [[INEXT:%.*]] = getelementptr inbounds [[A]], [[A]]* [[ICUR]], i64 1
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// CHECK-NEXT: [[T0:%.*]] = icmp eq [[A]]* [[INEXT]], [[IEND]]
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// CHECK-NEXT: br i1 [[T0]],
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// CHECK: [[NEXT]] = getelementptr inbounds [20 x [[A]]], [20 x [[A]]]* [[CUR]], i64 1
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// CHECK-NEXT: [[T0:%.*]] = icmp eq [20 x [[A]]]* [[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.p0i8.i64(i8* 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.p0i8.p0i8.i64(i8* align 8 %{{.*}}, i8* 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 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 linkonce_odr void @_ZN8zeroinit2X3IiEC2Ev(%"struct.zeroinit::X3"* %this) unnamed_addr
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// CHECK: call void @llvm.memset.p0i8.i64
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// CHECK-NEXT: call void @_ZN8zeroinit2X2IiEC2Ev
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// CHECK-NEXT: ret void
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