Definition template class pair { T m0; U m1; public: pair() { } pair(T v0, U v1) : m0(v0), m1(v1) { } T first() const { return m0; } U second() const { return m1; } }; https://godbolt Definition template class pair { T m0; U m1; public: pair() { } pair(T v0, U v1) : m0(v0), m1(v1) { } T first() const { return m0; } U second() const { return m1; } }; https://godbolt Definition template class pair { T m0; U m1; public: pair() { } pair(T v0, U v1) : m0(v0), m1(v1) { } T first() const { return m0; } U second() const { return m1; } }; https://godbolt

是变量 n，a3 指向 a[0]，v0 是变量 j，v1 是变量 i，t0 是变量 x 0: 24860004 addiu a2,a0,4 # a2 指向 a[i] 4: 24030001 li v1,1 # i = 1 Outer Loop: 8: 0065102b sltu v0,v1,a1 # i < n 时置 1 c: 14400003 bnez v0,1c # 若 iv0,v1 # j = i Inner Loop: 24: 8ce9fffc lw t1,-4(a3) # t1 = a[j-1] 28: 00000000 nop # 读数延迟槽未填充 2c: Inner Loop 34: 00000000 nop # 分支延迟槽未填充 38: 2442ffff addiu v0,v0,-1 # j- - 3c: ace90000 sw t1,0(a3) # a[j] = a[j-1] 40: 1440fff8 bnez v0,24 # 若 j != 0，跳到 Inner Loop 44: 24e7fffc addiu a3,a3,-4 # 递减