C++ 左值引用、右值引用和指针在汇编层面的差别

 // 右值引用  int&& rret = 1   2;  00D01FDF  mov         dword ptr [ebp-18h],3    00D01FE6  lea         eax,[ebp-18h]    00D01FE9  mov         dword ptr [rret],eax     rret = 10;  00D01FEC  mov         eax,dword ptr [rret]    00D01FEF  mov         dword ptr [eax],0Ah   

// 左值引用  int& lret = rret;  00D01FF5  mov         eax,dword ptr [rret]    00D01FF8  mov         dword ptr [lret],eax      lret = 10;  00D01FFB  mov         eax,dword ptr [lret]    00D01FFE  mov         dword ptr [eax],0Ah  

 // 指针  int* retp = &rret;  00D02004  mov         eax,dword ptr [rret]    00D02007  mov         dword ptr [retp],eax      *retp = 10;  00D0200A  mov         eax,dword ptr [retp]    00D0200D  mov         dword ptr [eax],0Ah   

 int a = rret;  00962013  mov         eax,dword ptr [rret] 00962016 mov ecx,dword ptr [eax] 00962018 mov dword ptr [a],ecx a = 10; 0096201B mov dword ptr [a],0Ah 

看上去 [左值引用]汇编和 [指针]汇编一样。