341 lines
8.6 KiB
C++
341 lines
8.6 KiB
C++
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -emit-llvm -o - | FileCheck %s
|
||
|
|
|
||
|
|
typedef __typeof__(sizeof(0)) size_t;
|
||
|
|
|
||
|
|
// Ensure that this declaration doesn't cause operator new to lose its
|
||
|
|
// 'noalias' attribute.
|
||
|
|
void *operator new[](size_t);
|
||
|
|
|
||
|
|
void t1() {
|
||
|
|
delete new int;
|
||
|
|
delete [] new int [3];
|
||
|
|
}
|
||
|
|
|
||
|
|
// CHECK: declare noalias i8* @_Znwm(i64) [[ATTR_NOBUILTIN:#[^ ]*]]
|
||
|
|
// CHECK: declare void @_ZdlPv(i8*) [[ATTR_NOBUILTIN_NOUNWIND:#[^ ]*]]
|
||
|
|
// CHECK: declare noalias i8* @_Znam(i64) [[ATTR_NOBUILTIN]]
|
||
|
|
// CHECK: declare void @_ZdaPv(i8*) [[ATTR_NOBUILTIN_NOUNWIND]]
|
||
|
|
|
||
|
|
namespace std {
|
||
|
|
struct nothrow_t {};
|
||
|
|
}
|
||
|
|
std::nothrow_t nothrow;
|
||
|
|
|
||
|
|
// Declare the reserved placement operators.
|
||
|
|
void *operator new(size_t, void*) throw();
|
||
|
|
void operator delete(void*, void*) throw();
|
||
|
|
void *operator new[](size_t, void*) throw();
|
||
|
|
void operator delete[](void*, void*) throw();
|
||
|
|
|
||
|
|
// Declare the replaceable global allocation operators.
|
||
|
|
void *operator new(size_t, const std::nothrow_t &) throw();
|
||
|
|
void *operator new[](size_t, const std::nothrow_t &) throw();
|
||
|
|
void operator delete(void *, const std::nothrow_t &) throw();
|
||
|
|
void operator delete[](void *, const std::nothrow_t &) throw();
|
||
|
|
|
||
|
|
|
||
|
|
void t2(int* a) {
|
||
|
|
int* b = new (a) int;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct S {
|
||
|
|
int a;
|
||
|
|
};
|
||
|
|
|
||
|
|
// POD types.
|
||
|
|
void t3() {
|
||
|
|
int *a = new int(10);
|
||
|
|
_Complex int* b = new _Complex int(10i);
|
||
|
|
|
||
|
|
S s;
|
||
|
|
s.a = 10;
|
||
|
|
S *sp = new S(s);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Non-POD
|
||
|
|
struct T {
|
||
|
|
T();
|
||
|
|
int a;
|
||
|
|
};
|
||
|
|
|
||
|
|
void t4() {
|
||
|
|
// CHECK: call void @_ZN1TC1Ev
|
||
|
|
T *t = new T;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct T2 {
|
||
|
|
int a;
|
||
|
|
T2(int, int);
|
||
|
|
};
|
||
|
|
|
||
|
|
void t5() {
|
||
|
|
// CHECK: call void @_ZN2T2C1Eii
|
||
|
|
T2 *t2 = new T2(10, 10);
|
||
|
|
}
|
||
|
|
|
||
|
|
int *t6() {
|
||
|
|
// Null check.
|
||
|
|
return new (0) int(10);
|
||
|
|
}
|
||
|
|
|
||
|
|
void t7() {
|
||
|
|
new int();
|
||
|
|
}
|
||
|
|
|
||
|
|
struct U {
|
||
|
|
~U();
|
||
|
|
};
|
||
|
|
|
||
|
|
void t8(int n) {
|
||
|
|
new int[10];
|
||
|
|
new int[n];
|
||
|
|
|
||
|
|
// Non-POD
|
||
|
|
new T[10];
|
||
|
|
new T[n];
|
||
|
|
|
||
|
|
// Cookie required
|
||
|
|
new U[10];
|
||
|
|
new U[n];
|
||
|
|
}
|
||
|
|
|
||
|
|
void t9() {
|
||
|
|
bool b;
|
||
|
|
|
||
|
|
new bool(true);
|
||
|
|
new (&b) bool(true);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct A {
|
||
|
|
void* operator new(__typeof(sizeof(int)), int, float, ...);
|
||
|
|
A();
|
||
|
|
};
|
||
|
|
|
||
|
|
A* t10() {
|
||
|
|
// CHECK: @_ZN1AnwEmifz
|
||
|
|
return new(1, 2, 3.45, 100) A;
|
||
|
|
}
|
||
|
|
|
||
|
|
// CHECK-LABEL: define void @_Z3t11i
|
||
|
|
struct B { int a; };
|
||
|
|
struct Bmemptr { int Bmemptr::* memptr; int a; };
|
||
|
|
|
||
|
|
void t11(int n) {
|
||
|
|
// CHECK: call noalias i8* @_Znwm
|
||
|
|
// CHECK: call void @llvm.memset.p0i8.i64(
|
||
|
|
B* b = new B();
|
||
|
|
|
||
|
|
// CHECK: call noalias i8* @_Znam
|
||
|
|
// CHECK: {{call void.*llvm.memset.p0i8.i64.*i8 0, i64 %}}
|
||
|
|
B *b2 = new B[n]();
|
||
|
|
|
||
|
|
// CHECK: call noalias i8* @_Znam
|
||
|
|
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
|
||
|
|
// CHECK: br
|
||
|
|
Bmemptr *b_memptr = new Bmemptr[n]();
|
||
|
|
|
||
|
|
// CHECK: ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
struct Empty { };
|
||
|
|
|
||
|
|
// We don't need to initialize an empty class.
|
||
|
|
// CHECK-LABEL: define void @_Z3t12v
|
||
|
|
void t12() {
|
||
|
|
// CHECK: call noalias i8* @_Znam
|
||
|
|
// CHECK-NOT: br
|
||
|
|
(void)new Empty[10];
|
||
|
|
|
||
|
|
// CHECK: call noalias i8* @_Znam
|
||
|
|
// CHECK-NOT: br
|
||
|
|
(void)new Empty[10]();
|
||
|
|
|
||
|
|
// CHECK: ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
// Zero-initialization
|
||
|
|
// CHECK-LABEL: define void @_Z3t13i
|
||
|
|
void t13(int n) {
|
||
|
|
// CHECK: call noalias i8* @_Znwm
|
||
|
|
// CHECK: store i32 0, i32*
|
||
|
|
(void)new int();
|
||
|
|
|
||
|
|
// CHECK: call noalias i8* @_Znam
|
||
|
|
// CHECK: {{call void.*llvm.memset.p0i8.i64.*i8 0, i64 %}}
|
||
|
|
(void)new int[n]();
|
||
|
|
|
||
|
|
// CHECK-NEXT: ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
struct Alloc{
|
||
|
|
int x;
|
||
|
|
void* operator new[](size_t size);
|
||
|
|
void operator delete[](void* p);
|
||
|
|
~Alloc();
|
||
|
|
};
|
||
|
|
|
||
|
|
void f() {
|
||
|
|
// CHECK: call i8* @_ZN5AllocnaEm(i64 808)
|
||
|
|
// CHECK: store i64 200
|
||
|
|
// CHECK: call void @_ZN5AllocD1Ev(
|
||
|
|
// CHECK: call void @_ZN5AllocdaEPv(i8*
|
||
|
|
delete[] new Alloc[10][20];
|
||
|
|
// CHECK: call noalias i8* @_Znwm
|
||
|
|
// CHECK: call void @_ZdlPv(i8*
|
||
|
|
delete new bool;
|
||
|
|
// CHECK: ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace test15 {
|
||
|
|
struct A { A(); ~A(); };
|
||
|
|
|
||
|
|
// CHECK-LABEL: define void @_ZN6test155test0EPv(
|
||
|
|
// CHECK: [[P:%.*]] = load i8*
|
||
|
|
// CHECK-NEXT: icmp eq i8* [[P]], null
|
||
|
|
// CHECK-NEXT: br i1
|
||
|
|
// CHECK: [[T0:%.*]] = bitcast i8* [[P]] to [[A:%.*]]*
|
||
|
|
// CHECK-NEXT: call void @_ZN6test151AC1Ev([[A]]* [[T0]])
|
||
|
|
void test0(void *p) {
|
||
|
|
new (p) A();
|
||
|
|
}
|
||
|
|
|
||
|
|
// CHECK-LABEL: define void @_ZN6test155test1EPv(
|
||
|
|
// CHECK: [[P:%.*]] = load i8**
|
||
|
|
// CHECK-NEXT: icmp eq i8* [[P]], null
|
||
|
|
// CHECK-NEXT: br i1
|
||
|
|
// CHECK: [[BEGIN:%.*]] = bitcast i8* [[P]] to [[A:%.*]]*
|
||
|
|
// CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [[A]]* [[BEGIN]], i64 5
|
||
|
|
// CHECK-NEXT: br label
|
||
|
|
// CHECK: [[CUR:%.*]] = phi [[A]]* [ [[BEGIN]], {{%.*}} ], [ [[NEXT:%.*]], {{%.*}} ]
|
||
|
|
// CHECK-NEXT: call void @_ZN6test151AC1Ev([[A]]* [[CUR]])
|
||
|
|
// CHECK-NEXT: [[NEXT]] = getelementptr inbounds [[A]]* [[CUR]], i64 1
|
||
|
|
// CHECK-NEXT: [[DONE:%.*]] = icmp eq [[A]]* [[NEXT]], [[END]]
|
||
|
|
// CHECK-NEXT: br i1 [[DONE]]
|
||
|
|
void test1(void *p) {
|
||
|
|
new (p) A[5];
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO: it's okay if all these size calculations get dropped.
|
||
|
|
// FIXME: maybe we should try to throw on overflow?
|
||
|
|
// CHECK-LABEL: define void @_ZN6test155test2EPvi(
|
||
|
|
// CHECK: [[N:%.*]] = load i32*
|
||
|
|
// CHECK-NEXT: [[T0:%.*]] = sext i32 [[N]] to i64
|
||
|
|
// CHECK-NEXT: [[T1:%.*]] = icmp slt i64 [[T0]], 0
|
||
|
|
// CHECK-NEXT: [[T2:%.*]] = select i1 [[T1]], i64 -1, i64 [[T0]]
|
||
|
|
// CHECK-NEXT: [[P:%.*]] = load i8*
|
||
|
|
// CHECK-NEXT: icmp eq i8* [[P]], null
|
||
|
|
// CHECK-NEXT: br i1
|
||
|
|
// CHECK: [[BEGIN:%.*]] = bitcast i8* [[P]] to [[A:%.*]]*
|
||
|
|
// CHECK-NEXT: [[ISEMPTY:%.*]] = icmp eq i64 [[T0]], 0
|
||
|
|
// CHECK-NEXT: br i1 [[ISEMPTY]],
|
||
|
|
// CHECK: [[END:%.*]] = getelementptr inbounds [[A]]* [[BEGIN]], i64 [[T0]]
|
||
|
|
// CHECK-NEXT: br label
|
||
|
|
// CHECK: [[CUR:%.*]] = phi [[A]]* [ [[BEGIN]],
|
||
|
|
// CHECK-NEXT: call void @_ZN6test151AC1Ev([[A]]* [[CUR]])
|
||
|
|
void test2(void *p, int n) {
|
||
|
|
new (p) A[n];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR10197 {
|
||
|
|
// CHECK-LABEL: define weak_odr void @_ZN7PR101971fIiEEvv()
|
||
|
|
template<typename T>
|
||
|
|
void f() {
|
||
|
|
// CHECK: [[CALL:%.*]] = call noalias i8* @_Znwm
|
||
|
|
// CHECK-NEXT: [[CASTED:%.*]] = bitcast i8* [[CALL]] to
|
||
|
|
new T;
|
||
|
|
// CHECK-NEXT: ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
template void f<int>();
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR11523 {
|
||
|
|
class MyClass;
|
||
|
|
typedef int MyClass::* NewTy;
|
||
|
|
// CHECK-LABEL: define i64* @_ZN7PR115231fEv
|
||
|
|
// CHECK: store i64 -1
|
||
|
|
NewTy* f() { return new NewTy[2](); }
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR11757 {
|
||
|
|
// Make sure we elide the copy construction.
|
||
|
|
struct X { X(); X(const X&); };
|
||
|
|
X* a(X* x) { return new X(X()); }
|
||
|
|
// CHECK: define {{.*}} @_ZN7PR117571aEPNS_1XE
|
||
|
|
// CHECK: [[CALL:%.*]] = call noalias i8* @_Znwm
|
||
|
|
// CHECK-NEXT: [[CASTED:%.*]] = bitcast i8* [[CALL]] to
|
||
|
|
// CHECK-NEXT: call void @_ZN7PR117571XC1Ev({{.*}}* [[CASTED]])
|
||
|
|
// CHECK-NEXT: ret {{.*}} [[CASTED]]
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR13380 {
|
||
|
|
struct A { A() {} };
|
||
|
|
struct B : public A { int x; };
|
||
|
|
// CHECK-LABEL: define i8* @_ZN7PR133801fEv
|
||
|
|
// CHECK: call noalias i8* @_Znam(
|
||
|
|
// CHECK: call void @llvm.memset.p0i8
|
||
|
|
// CHECK-NEXT: call void @_ZN7PR133801BC1Ev
|
||
|
|
void* f() { return new B[2](); }
|
||
|
|
}
|
||
|
|
|
||
|
|
struct MyPlacementType {} mpt;
|
||
|
|
void *operator new(size_t, MyPlacementType);
|
||
|
|
|
||
|
|
namespace N3664 {
|
||
|
|
struct S { S() throw(int); };
|
||
|
|
|
||
|
|
// CHECK-LABEL-LABEL: define void @_ZN5N36641fEv
|
||
|
|
void f() {
|
||
|
|
// CHECK: call noalias i8* @_Znwm(i64 4) [[ATTR_BUILTIN_NEW:#[^ ]*]]
|
||
|
|
int *p = new int;
|
||
|
|
// CHECK: call void @_ZdlPv({{.*}}) [[ATTR_BUILTIN_DELETE:#[^ ]*]]
|
||
|
|
delete p;
|
||
|
|
|
||
|
|
// CHECK: call noalias i8* @_Znam(i64 12) [[ATTR_BUILTIN_NEW]]
|
||
|
|
int *q = new int[3];
|
||
|
|
// CHECK: call void @_ZdaPv({{.*}}) [[ATTR_BUILTIN_DELETE]]
|
||
|
|
delete [] p;
|
||
|
|
|
||
|
|
// CHECK: call i8* @_ZnamRKSt9nothrow_t(i64 3, {{.*}}) [[ATTR_BUILTIN_NOTHROW_NEW:#[^ ]*]]
|
||
|
|
(void) new (nothrow) S[3];
|
||
|
|
|
||
|
|
// CHECK: call i8* @_Znwm15MyPlacementType(i64 4){{$}}
|
||
|
|
(void) new (mpt) int;
|
||
|
|
}
|
||
|
|
|
||
|
|
// FIXME: Can we mark this noalias?
|
||
|
|
// CHECK: declare i8* @_ZnamRKSt9nothrow_t(i64, {{.*}}) [[ATTR_NOBUILTIN_NOUNWIND]]
|
||
|
|
|
||
|
|
// CHECK-LABEL-LABEL: define void @_ZN5N36641gEv
|
||
|
|
void g() {
|
||
|
|
// It's OK for there to be attributes here, so long as we don't have a
|
||
|
|
// 'builtin' attribute.
|
||
|
|
// CHECK: call noalias i8* @_Znwm(i64 4){{$}}
|
||
|
|
int *p = (int*)operator new(4);
|
||
|
|
// CHECK: call void @_ZdlPv({{.*}}) [[ATTR_NOUNWIND:#[^ ]*]]
|
||
|
|
operator delete(p);
|
||
|
|
|
||
|
|
// CHECK: call noalias i8* @_Znam(i64 12){{$}}
|
||
|
|
int *q = (int*)operator new[](12);
|
||
|
|
// CHECK: call void @_ZdaPv({{.*}}) [[ATTR_NOUNWIND]]
|
||
|
|
operator delete [](p);
|
||
|
|
|
||
|
|
// CHECK: call i8* @_ZnamRKSt9nothrow_t(i64 3, {{.*}}) [[ATTR_NOUNWIND]]
|
||
|
|
(void) operator new[](3, nothrow);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// CHECK-DAG: attributes [[ATTR_NOBUILTIN]] = {{[{].*}} nobuiltin {{.*[}]}}
|
||
|
|
// CHECK-DAG: attributes [[ATTR_NOBUILTIN_NOUNWIND]] = {{[{].*}} nobuiltin nounwind {{.*[}]}}
|
||
|
|
|
||
|
|
// CHECK: attributes [[ATTR_NOUNWIND]] =
|
||
|
|
// CHECK-NOT: builtin
|
||
|
|
// CHECK-NOT: attributes
|
||
|
|
// CHECK: nounwind
|
||
|
|
// CHECK-NOT: builtin
|
||
|
|
// CHECK: attributes
|
||
|
|
|
||
|
|
// CHECK-DAG: attributes [[ATTR_BUILTIN_NEW]] = {{[{].*}} builtin {{.*[}]}}
|
||
|
|
// CHECK-DAG: attributes [[ATTR_BUILTIN_DELETE]] = {{[{].*}} builtin {{.*[}]}}
|