forked from OSchip/llvm-project
166 lines
2.6 KiB
C++
166 lines
2.6 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -emit-llvm -o - | FileCheck %s
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#include <stddef.h>
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void t1() {
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int* a = new int;
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}
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// Placement.
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void* operator new(size_t, void*) throw();
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void t2(int* a) {
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int* b = new (a) int;
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}
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struct S {
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int a;
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};
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// POD types.
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void t3() {
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int *a = new int(10);
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_Complex int* b = new _Complex int(10i);
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S s;
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s.a = 10;
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S *sp = new S(s);
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}
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// Non-POD
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struct T {
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T();
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int a;
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};
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void t4() {
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// CHECK: call void @_ZN1TC1Ev
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T *t = new T;
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}
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struct T2 {
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int a;
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T2(int, int);
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};
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void t5() {
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// CHECK: call void @_ZN2T2C1Eii
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T2 *t2 = new T2(10, 10);
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}
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int *t6() {
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// Null check.
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return new (0) int(10);
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}
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void t7() {
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new int();
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}
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struct U {
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~U();
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};
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void t8(int n) {
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new int[10];
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new int[n];
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// Non-POD
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new T[10];
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new T[n];
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// Cookie required
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new U[10];
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new U[n];
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}
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// noalias
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// CHECK: declare noalias i8* @_Znam
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void *operator new[](size_t);
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void t9() {
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bool b;
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new bool(true);
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new (&b) bool(true);
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}
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struct A {
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void* operator new(__typeof(sizeof(int)), int, float, ...);
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A();
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};
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A* t10() {
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// CHECK: @_ZN1AnwEmifz
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return new(1, 2, 3.45, 100) A;
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}
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// CHECK: define void @_Z3t11i
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struct B { int a; };
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struct Bmemptr { int Bmemptr::* memptr; int a; };
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void t11(int n) {
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// CHECK: call noalias i8* @_Znwm
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// CHECK: call void @llvm.memset.p0i8.i64(
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B* b = new B();
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// CHECK: call noalias i8* @_Znam
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// CHECK: {{call void.*llvm.memset.p0i8.i64.*i8 0, i64 %}}
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B *b2 = new B[n]();
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// CHECK: call noalias i8* @_Znam
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
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// CHECK: br
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Bmemptr *b_memptr = new Bmemptr[n]();
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// CHECK: ret void
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}
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struct Empty { };
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// We don't need to initialize an empty class.
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// CHECK: define void @_Z3t12v
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void t12() {
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// CHECK: call noalias i8* @_Znam
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// CHECK-NOT: br
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(void)new Empty[10];
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// CHECK: call noalias i8* @_Znam
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// CHECK-NOT: br
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(void)new Empty[10]();
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// CHECK: ret void
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}
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// Zero-initialization
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// CHECK: define void @_Z3t13i
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void t13(int n) {
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// CHECK: call noalias i8* @_Znwm
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// CHECK: store i32 0, i32*
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(void)new int();
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// CHECK: call noalias i8* @_Znam
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// CHECK: {{call void.*llvm.memset.p0i8.i64.*i8 0, i64 %}}
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(void)new int[n]();
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// CHECK-NEXT: ret void
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}
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struct Alloc{
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int x;
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void* operator new[](size_t size);
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void operator delete[](void* p);
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~Alloc();
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};
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void f() {
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// CHECK: call i8* @_ZN5AllocnaEm(i64 808)
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// CHECK: store i64 200
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// CHECK: call void @_ZN5AllocD1Ev(
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// CHECK: call void @_ZN5AllocdaEPv(i8*
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delete[] new Alloc[10][20];
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// CHECK: call noalias i8* @_Znwm
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// CHECK: call void @_ZdlPv(i8*
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delete new bool;
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// CHECK: ret void
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}
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