test/CodeGenCXX/static-init.cpp

   1 // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
   2
   3 // CHECK: @_ZZ1hvE1i = internal global i32 0, align 4
   4
   5 // CHECK: @_ZZN5test16getvarEiE3var = internal constant [4 x i32] [i32 1, i32 0, i32 2, i32 4], align 16
   6 // CHECK: @_ZZ2h2vE1i = linkonce_odr global i32 0
   7 // CHECK: @_ZGVZ2h2vE1i = linkonce_odr global i64 0
   8
   9 struct A {
  10   A();
  11   ~A();
  12 };
  13
  14 void f() {
  15   // CHECK: call i32 @__cxa_guard_acquire
  16   // CHECK: call void @_ZN1AC1Ev
  17   // CHECK: call i32 @__cxa_atexit(void (i8*)* bitcast (void (%struct.A*)* @_ZN1AD1Ev to void (i8*)*), i8* getelementptr inbounds (%struct.A* @_ZZ1fvE1a, i32 0, i32 0), i8* bitcast (i8** @__dso_handle to i8*))
  18   // CHECK: call void @__cxa_guard_release
  19   static A a;
  20 }
  21
  22 void g() {
  23   // CHECK: call noalias i8* @_Znwm(i64 1)
  24   // CHECK: call void @_ZN1AC1Ev(
  25   static A& a = *new A;
  26 }
  27
  28 int a();
  29 void h() {
  30   static const int i = a();
  31 }
  32
  33 inline void h2() {
  34   static int i = a();
  35 }
  36
  37 void h3() {
  38   h2();
  39 }
  40
  41 // PR6980: this shouldn't crash
  42 namespace test0 {
  43   struct A { A(); };
  44   __attribute__((noreturn)) int throw_exception();
  45
  46   void test() {
  47     throw_exception();
  48     static A r;
  49   }
  50 }
  51
  52 namespace test1 {
  53   // CHECK: define internal i32 @_ZN5test16getvarEi(
  54   static inline int getvar(int index) {
  55     static const int var[] = { 1, 0, 2, 4 };
  56     return var[index];
  57   }
  58
  59   void test() { (void) getvar(2); }
  60 }