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

   1 // RUN: %clang_cc1 -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(ptr 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{{.*}} ptr @_ZN5test24testEv()
  29   A *test() {
  30     // CHECK:      [[NEW:%.*]] = call noalias noundef nonnull ptr @_Znaj(i32 noundef 44)
  31     // CHECK-NEXT: store i32 10, ptr [[NEW]]
  32     // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, ptr [[NEW]], i32 4
  33     // CHECK-NEXT: ret ptr [[T1]]
  34     return ::new A[10];
  35   }
  36
  37   // CHECK-LABEL: define{{.*}} void @_ZN5test24testEPNS_1AE(
  38   void test(A *p) {
  39     // CHECK:      [[P:%.*]] = alloca ptr, align 4
  40     // CHECK-NEXT: store ptr {{%.*}}, ptr [[P]], align 4
  41     // CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[P]], align 4
  42     // CHECK-NEXT: [[T1:%.*]] = icmp eq ptr [[T0]], null
  43     // CHECK-NEXT: br i1 [[T1]],
  44     // CHECK: [[T3:%.*]] = getelementptr inbounds i8, ptr [[T0]], i32 -4
  45     // CHECK-NEXT: [[T5:%.*]] = load i32, ptr [[T3]]
  46     // CHECK-NEXT: [[T6:%.*]] = mul i32 4, [[T5]]
  47     // CHECK-NEXT: [[T7:%.*]] = add i32 [[T6]], 4
  48     // CHECK-NEXT: call void @_ZdaPvj(ptr noundef [[T3]], i32 noundef [[T7]])
  49     // CHECK-NEXT: br label
  50     ::delete[] p;
  51   }
  52 }
  53
  54 namespace test3 {
  55   struct A {
  56     int x;
  57     void operator delete[](void *, size_t);
  58   };
  59   struct B : A {};
  60
  61   // CHECK-LABEL: define{{.*}} void @_ZN5test34testEv()
  62   void test() {
  63     // CHECK:      [[CALL:%.*]] = call noalias noundef nonnull ptr @_Znaj(i32 noundef 24)
  64     // CHECK-NEXT: store i32 5
  65     (void) new B[5];
  66   }
  67 }