从汇编看模块的用法和函数传递引用时的差别-优快云博客

本文介绍了两种内联交换函数实现方式：一种通用类型T的交换函数swap，另一种针对整型的交换函数iswap。通过汇编指令详细展示了交换过程，包括临时变量的使用以及寄存器之间的数据移动。

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inline void swap(T &t1,T &t2) { ........... T hold=t2; 004117DE mov eax,dword ptr [t2] 004117E1 mov ecx,dword ptr [eax] 004117E3 mov dword ptr [hold],ecx t2=t1; 004117E6 mov eax,dword ptr [t2] 004117E9 mov ecx,dword ptr [t1] 004117EC mov edx,dword ptr [ecx] 004117EE mov dword ptr [eax],edx t1=hold; 004117F0 mov eax,dword ptr [t1] 004117F3 mov ecx,dword ptr [hold] 004117F6 mov dword ptr [eax],ecx } inline void iswap(int t1,int t2) { ................ int hold=t2; 0041241E mov eax,dword ptr [t2] 00412421 mov dword ptr [hold],eax t2=t1; 00412424 mov eax,dword ptr [t1] 00412427 mov dword ptr [t2],eax t1=hold; 0041242A mov eax,dword ptr [hold] 0041242D mov dword ptr [t1],eax } inline void iswap(int &t1,int &t2) { .............. int hold=t2; 0041241E mov eax,dword ptr [t2] 00412421 mov ecx,dword ptr [eax] 00412423 mov dword ptr [hold],ecx t2=t1; 00412426 mov eax,dword ptr [t2] 00412429 mov ecx,dword ptr [t1] 0041242C mov edx,dword ptr [ecx] 0041242E mov dword ptr [eax],edx t1=hold; 00412430 mov eax,dword ptr [t1] 00412433 mov ecx,dword ptr [hold] 00412436 mov dword ptr [eax],ecx }