代码

int plus(int a,int b){
	int c;
	asm volatile(R"(
		movl %[a],%%eax
		addl %[b],%%eax
		movl %%eax,%[c]
	)"
	:[c]"=r"(c)
	:[a]"r"(a),[b]"r"(b)
	:"memory","eax"
	);
	return c;
}

评测结果