clang/test/CodeGenCXX/runtimecc.cpp

   1 // RUN: %clang_cc1 %s -triple=armv7-apple-darwin10 -emit-llvm -o - -fexceptions -fcxx-exceptions | FileCheck %s
   2
   3 // Check that we annotate all compiler-synthesized runtime calls and
   4 // functions with the actual ABI-determined CC.  This usually doesn't
   5 // matter as long as we're internally consistent (and the LLVM-default
   6 // CC is consistent with the real one), but it's possible for user
   7 // translation units to define these runtime functions (or, equivalently,
   8 // for us to get LTO'ed with such a translation unit), and then the
   9 // mismatch will kill us.
  10 //
  11 // rdar://12818655
  12
  13 // CHECK: [[A:%.*]] = type { double }
  14
  15 namespace test0 {
  16   struct A {
  17     double d;
  18     A();
  19     ~A();
  20   };
  21
  22   A global;
  23 // CHECK-LABEL:    define internal void @__cxx_global_var_init()
  24 // CHECK:      call noundef [[A]]* @_ZN5test01AC1Ev([[A]]* {{[^,]*}} @_ZN5test06globalE)
  25 // CHECK-NEXT: call i32 @__cxa_atexit(void (i8*)* bitcast ([[A]]* ([[A]]*)* @_ZN5test01AD1Ev to void (i8*)*), i8* bitcast ([[A]]* @_ZN5test06globalE to i8*), i8* @__dso_handle) [[NOUNWIND:#[0-9]+]]
  26 // CHECK-NEXT: ret void
  27 }
  28
  29 // CHECK: declare i32 @__cxa_atexit(void (i8*)*, i8*, i8*) [[NOUNWIND]]
  30
  31 namespace test1 {
  32   void test() {
  33     throw 0;
  34   }
  35
  36 // CHECK-LABEL:    define{{.*}} void @_ZN5test14testEv()
  37 // CHECK:      [[T0:%.*]] = call i8* @__cxa_allocate_exception(i32 4) [[NOUNWIND]]
  38 // CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to i32*
  39 // CHECK-NEXT: store i32 0, i32* [[T1]]
  40 // CHECK-NEXT: call void @__cxa_throw(i8* [[T0]], i8* bitcast (i8** @_ZTIi to i8*), i8* null) [[NORETURN:#[0-9]+]]
  41 // CHECK-NEXT: unreachable
  42 }
  43
  44 // CHECK: declare i8* @__cxa_allocate_exception(i32)
  45
  46 // CHECK: declare void @__cxa_throw(i8*, i8*, i8*)
  47
  48 // CHECK-LABEL: define internal void @_GLOBAL__sub_I_runtimecc.cpp()
  49 // CHECK:   call void @__cxx_global_var_init()
  50
  51
  52 // CHECK: attributes [[NOUNWIND]] = { nounwind }
  53 // CHECK: attributes [[NORETURN]] = { noreturn }