clang/test/CodeGenCXX/armv7k.cpp

   1 // RUN: %clang_cc1 %s -triple=thumbv7k-apple-watchos -emit-llvm -o - -target-abi aapcs16 | FileCheck %s
   2 // RUN: %clang_cc1 %s -triple=thumbv7k-apple-watchos -emit-llvm -o - -target-abi aapcs16 | FileCheck -check-prefix=CHECK-GLOBALS %s
   3
   4 // RUN: %clang_cc1 %s -triple=arm64_32-apple-ios -emit-llvm -o - -target-abi darwinpcs | FileCheck %s
   5 // RUN: %clang_cc1 %s -triple=arm64_32-apple-ios -emit-llvm -o - -target-abi darwinpcs | FileCheck -check-prefix=CHECK-GLOBALS %s
   6
   7 // __cxa_guard_acquire argument is 64-bit
   8 struct A {
   9   A();
  10 };
  11
  12 void f() {
  13   // CHECK: call i32 @__cxa_guard_acquire(ptr
  14   static A a;
  15 }
  16
  17 // ARM64 uses the C++11 definition of POD.
  18 namespace test1 {
  19   // This class is POD in C++11 and cannot have objects allocated in
  20   // its tail-padding.
  21   struct ABase {};
  22   struct A : ABase {
  23     int x;
  24     char c;
  25   };
  26
  27   struct B : A {
  28     char d;
  29   };
  30
  31   int test() {
  32     return sizeof(B);
  33   }
  34   // CHECK: define{{.*}} i32 @_ZN5test14testEv()
  35   // CHECK: ret i32 12
  36 }
  37
  38 namespace std {
  39   class type_info;
  40 }
  41
  42 // ARM64 uses string comparisons for what would otherwise be
  43 // default-visibility weak RTTI.
  44 namespace test2 {
  45   struct A {
  46     virtual void foo();
  47   };
  48   void A::foo() {}
  49   // Tested below because these globals get kindof oddly rearranged.
  50
  51   struct __attribute__((visibility("hidden"))) B {};
  52   const std::type_info &b0 = typeid(B);
  53   // CHECK-GLOBALS: @_ZTSN5test21BE = linkonce_odr hidden constant
  54   // CHECK-GLOBALS: @_ZTIN5test21BE = linkonce_odr hidden constant { {{.*}}, ptr @_ZTSN5test21BE }
  55
  56   const std::type_info &b1 = typeid(B*);
  57   // CHECK-GLOBALS: @_ZTSPN5test21BE = linkonce_odr hidden constant
  58   // CHECK-GLOBALS: @_ZTIPN5test21BE = linkonce_odr hidden constant { {{.*}}, ptr @_ZTSPN5test21BE, i32 0, ptr @_ZTIN5test21BE
  59
  60   struct C {};
  61   const std::type_info &c0 = typeid(C);
  62   // CHECK-GLOBALS: @_ZTSN5test21CE = linkonce_odr constant [11 x i8] c"N5test21CE\00"
  63   // CHECK-GLOBALS: @_ZTIN5test21CE = linkonce_odr constant { {{.*}}, ptr @_ZTSN5test21CE }
  64 }
  65
  66 // va_list should be based on "char *" rather than "ptr".
  67
  68 // CHECK: define{{.*}} void @_Z11whatsVaListPc
  69 void whatsVaList(__builtin_va_list l) {}