test/CodeGenCXX/operator-new.cpp

   1 // RUN: %clang_cc1 -triple i686-pc-linux-gnu -emit-llvm -o %t-1.ll %s
   2 // RUN: FileCheck -check-prefix SANE --input-file=%t-1.ll %s
   3 // RUN: %clang_cc1 -triple i686-pc-linux-gnu -emit-llvm -fno-assume-sane-operator-new -o %t-2.ll %s
   4 // RUN: FileCheck -check-prefix SANENOT --input-file=%t-2.ll %s
   5
   6
   7 class teste {
   8   int A;
   9 public:
  10   teste() : A(2) {}
  11 };
  12
  13 void f1() {
  14   // SANE: declare noalias i8* @_Znwj(
  15   // SANENOT: declare i8* @_Znwj(
  16   new teste();
  17 }
  18
  19
  20 // rdar://5739832 - operator new should check for overflow in multiply.
  21 void *f2(long N) {
  22   return new int[N];
  23
  24 // SANE:      [[UWO:%.*]] = call {{.*}} @llvm.umul.with.overflow
  25 // SANE-NEXT: [[OVER:%.*]] = extractvalue {{.*}} [[UWO]], 1
  26 // SANE-NEXT: [[SUM:%.*]] = extractvalue {{.*}} [[UWO]], 0
  27 // SANE-NEXT: [[RESULT:%.*]] = select i1 [[OVER]], i32 -1, i32 [[SUM]]
  28 // SANE-NEXT: call noalias i8* @_Znaj(i32 [[RESULT]])
  29 }