1 单层循环结构

li      $t0, 0                  # int i = 0;bomb_loop0:bge     $t0, $t1, place_bombs__epilogue           # while (i < N_ROWS)########do  some thing########addi    $t0, $t0, 1                                j       bomb_loop0place_bombs__epilogue:jr      $ra

在for循环里调用函数，所以，要储存a0,a1,t0,t1的值。需要假设这些值会变化

li      $t0, 0                  # int i = 0;lw      $t1, total_bombsbomb_loop0:bge     $t0, $t1, place_bombs__epilogue           # while (i < N_ROWS)addiu   $sp, $sp, -16sw      $a0, 0($sp)sw      $a1, 4($sp)sw      $t0, 8($sp)sw      $t1, 12($sp)jal     place_single_bomblw      $a0, 0($sp)lw      $a1, 4($sp)lw      $t0, 8($sp)lw      $t1, 12($sp)addiu   $sp, $sp, 16addi    $t0, $t0, 1                                j       bomb_loop0place_bombs__epilogue:# addiu   $sp, $sp, 8lw      $ra, 0($sp)addiu   $sp, $sp, 4jr      $ra

1 双层循环结构

       li      $t0, 0                  # int i = 0;
row_loop:bge     $t0, N_ROWS, row_loop_end           # while (i < N_ROWS)#li      $t1, 0                  # int j = 0;
col_loop:bge     $t1, N_COLS, col_loop_end           # while (j < N_ROWS)#mul     $t2, $t0, N_COLS        #add     $t2, $t2, $t1           #lb      $t3, grid($t2)          # $t3 = grid[i][j]or      $t4, $t3, IS_RVLD_MASKsb      $t4, grid($t2)          # grid[i][j] |= IS_RVLD_MASKaddi    $t1, $t1, 1             # j++;j       col_loop
col_loop_end:#addi    $t0, $t0, 1             # i++;j       row_loop    #row_loop_end:j       reveal_grid__epilogue
reveal_grid__epilogue:lw      $ra, 0($sp)addiu   $sp, $sp, 4jr      $ra

if-else结构

在第一个if后面，注意跳转,别把后面的else也执行了

if1:beq     $t3, 0, if1_elsej       mark_cell__epilogueif1_else:j       mark_cell__epiloguemark_cell__epilogue:lw      $ra, 0($sp)addiu   $sp, $sp, 4jr      $ra