clang/test/CodeGen/ms_this.cpp

   1 // REQUIRES: x86-registered-target
   2
   3 // RUN: %clang_cc1 -triple x86_64-pc-win32 -fasm-blocks -emit-llvm %s -o - | FileCheck %s
   4 class t1 {
   5 public:
   6   double a;
   7   void runc();
   8 };
   9
  10 class t2 {
  11 public:
  12   double a;
  13   void runc();
  14 };
  15
  16 // CHECK: define dso_local void @"?runc@t2@@
  17 void t2::runc() {
  18   double num = 0;
  19   __asm {
  20       mov rax,[this]
  21       // CHECK: [[THIS_ADDR_T2:%.+]] = alloca ptr
  22       // CHECK: [[THIS1_T2:%.+]] = load ptr, ptr [[THIS_ADDR_T2]],
  23       // CHECK: call void asm sideeffect inteldialect "mov rax,$1\0A\09mov rbx,[rax]\0A\09mov $0, rbx", "=*m,m,~{rax},~{rbx},~{dirflag},~{fpsr},~{flags}"(ptr elementtype(double) %num, ptr [[THIS1_T2]])
  24       mov rbx,[rax]
  25       mov num, rbx
  26            };
  27 }
  28
  29 // CHECK: define dso_local void @"?runc@t1@@
  30 void t1::runc() {
  31   double num = 0;
  32   __asm {
  33        mov rax,[this]
  34        // CHECK: [[THIS_ADDR_T1:%.+]] = alloca ptr
  35        // CHECK: [[THIS1_T1:%.+]] = load ptr, ptr [[THIS_ADDR_T1]],
  36        // CHECK: call void asm sideeffect inteldialect "mov rax,$1{{.*}}ptr [[THIS1_T1]]
  37         mov rbx,[rax]
  38         mov num, rbx
  39            };
  40 }
  41
  42 struct s {
  43   int a;
  44   // CHECK: define linkonce_odr dso_local void @"?func@s@@
  45   void func() {
  46     __asm mov rax, [this]
  47     // CHECK: [[THIS_ADDR_S:%.+]] = alloca ptr
  48     // CHECK: [[THIS1_S:%.+]] = load ptr, ptr [[THIS_ADDR_S]],
  49     // CHECK: call void asm sideeffect inteldialect "mov rax, $0{{.*}}ptr [[THIS1_S]]
  50   }
  51 } f3;
  52
  53 int main() {
  54   f3.func();
  55   f3.a=1;
  56   return 0;
  57 }