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 // rdar://11540122
   9 struct A {
  10   A();
  11 };
  12
  13 void f() {
  14   // CHECK: call i32 @__cxa_guard_acquire(i32*
  15   static A a;
  16 }
  17
  18 // ARM64 uses the C++11 definition of POD.
  19 // rdar://12650514
  20 namespace test1 {
  21   // This class is POD in C++11 and cannot have objects allocated in
  22   // its tail-padding.
  23   struct ABase {};
  24   struct A : ABase {
  25     int x;
  26     char c;
  27   };
  28
  29   struct B : A {
  30     char d;
  31   };
  32
  33   int test() {
  34     return sizeof(B);
  35   }
  36   // CHECK: define{{.*}} i32 @_ZN5test14testEv()
  37   // CHECK: ret i32 12
  38 }
  39
  40 namespace std {
  41   class type_info;
  42 }
  43
  44 // ARM64 uses string comparisons for what would otherwise be
  45 // default-visibility weak RTTI.  rdar://12650568
  46 namespace test2 {
  47   struct A {
  48     virtual void foo();
  49   };
  50   void A::foo() {}
  51   // Tested below because these globals get kindof oddly rearranged.
  52
  53   struct __attribute__((visibility("hidden"))) B {};
  54   const std::type_info &b0 = typeid(B);
  55   // CHECK-GLOBALS: @_ZTSN5test21BE = linkonce_odr hidden constant
  56   // CHECK-GLOBALS: @_ZTIN5test21BE = linkonce_odr hidden constant { {{.*}}, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @_ZTSN5test21BE, i32 0, i32 0) }
  57
  58   const std::type_info &b1 = typeid(B*);
  59   // CHECK-GLOBALS: @_ZTSPN5test21BE = linkonce_odr hidden constant
  60   // CHECK-GLOBALS: @_ZTIPN5test21BE = linkonce_odr hidden constant { {{.*}}, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @_ZTSPN5test21BE, i32 0, i32 0), i32 0, i8* bitcast
  61
  62   struct C {};
  63   const std::type_info &c0 = typeid(C);
  64   // CHECK-GLOBALS: @_ZTSN5test21CE = linkonce_odr constant [11 x i8] c"N5test21CE\00"
  65   // CHECK-GLOBALS: @_ZTIN5test21CE = linkonce_odr constant { {{.*}}, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @_ZTSN5test21CE, i32 0, i32 0) }
  66 }
  67
  68 // va_list should be based on "char *" rather than "void *".
  69
  70 // CHECK: define{{.*}} void @_Z11whatsVaListPc
  71 void whatsVaList(__builtin_va_list l) {}