clang/test/CodeGenCXX/delete-two-arg.cpp

   1 // RUN: %clang_cc1 -no-opaque-pointers -triple i686-pc-linux-gnu %s -o - -emit-llvm -verify | FileCheck %s
   2 // expected-no-diagnostics
   3
   4 typedef __typeof(sizeof(int)) size_t;
   5
   6 namespace test1 {
   7   struct A { void operator delete(void*,size_t); int x; };
   8
   9   // CHECK-LABEL: define{{.*}} void @_ZN5test11aEPNS_1AE(
  10   void a(A *x) {
  11     // CHECK:      load
  12     // CHECK-NEXT: icmp eq {{.*}}, null
  13     // CHECK-NEXT: br i1
  14     // CHECK:      call void @_ZN5test11AdlEPvj(i8* noundef %{{.*}}, i32 noundef 4)
  15     delete x;
  16   }
  17 }
  18
  19 // Check that we make cookies for the two-arg delete even when using
  20 // the global allocator and deallocator.
  21 namespace test2 {
  22   struct A {
  23     int x;
  24     void *operator new[](size_t);
  25     void operator delete[](void *, size_t);
  26   };
  27
  28   // CHECK: define{{.*}} [[A:%.*]]* @_ZN5test24testEv()
  29   A *test() {
  30     // CHECK:      [[NEW:%.*]] = call noalias noundef nonnull i8* @_Znaj(i32 noundef 44)
  31     // CHECK-NEXT: [[T0:%.*]] = bitcast i8* [[NEW]] to i32*
  32     // CHECK-NEXT: store i32 10, i32* [[T0]]
  33     // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[NEW]], i32 4
  34     // CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to [[A]]*
  35     // CHECK-NEXT: ret [[A]]* [[T2]]
  36     return ::new A[10];
  37   }
  38
  39   // CHECK-LABEL: define{{.*}} void @_ZN5test24testEPNS_1AE(
  40   void test(A *p) {
  41     // CHECK:      [[P:%.*]] = alloca [[A]]*, align 4
  42     // CHECK-NEXT: store [[A]]* {{%.*}}, [[A]]** [[P]], align 4
  43     // CHECK-NEXT: [[T0:%.*]] = load [[A]]*, [[A]]** [[P]], align 4
  44     // CHECK-NEXT: [[T1:%.*]] = icmp eq [[A]]* [[T0]], null
  45     // CHECK-NEXT: br i1 [[T1]],
  46     // CHECK:      [[T2:%.*]] = bitcast [[A]]* [[T0]] to i8*
  47     // CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds i8, i8* [[T2]], i32 -4
  48     // CHECK-NEXT: [[T4:%.*]] = bitcast i8* [[T3]] to i32*
  49     // CHECK-NEXT: [[T5:%.*]] = load i32, i32* [[T4]]
  50     // CHECK-NEXT: call void @_ZdaPv(i8* noundef [[T3]])
  51     // CHECK-NEXT: br label
  52     ::delete[] p;
  53   }
  54 }
  55
  56 // rdar://problem/8913519
  57 namespace test3 {
  58   struct A {
  59     int x;
  60     void operator delete[](void *, size_t);
  61   };
  62   struct B : A {};
  63
  64   // CHECK-LABEL: define{{.*}} void @_ZN5test34testEv()
  65   void test() {
  66     // CHECK:      [[CALL:%.*]] = call noalias noundef nonnull i8* @_Znaj(i32 noundef 24)
  67     // CHECK-NEXT: bitcast i8* [[CALL]] to i32*
  68     // CHECK-NEXT: store i32 5
  69     (void) new B[5];
  70   }
  71 }