106 lines
2.6 KiB
Plaintext
106 lines
2.6 KiB
Plaintext
|
|
||
|
digraph heron {
|
||
|
//node [shape=circle,regular=1,style=filled,fillcolor=white];
|
||
|
edge [arrowhead=odot];
|
||
|
graph [overlap=false];
|
||
|
|
||
|
subgraph {
|
||
|
edge [weight=3];
|
||
|
C0 -> C1 -> C2 -> C3 -> C4 -> C5 -> C6 -> C7 -> C8 -> C9
|
||
|
}
|
||
|
|
||
|
|
||
|
// variables & constants
|
||
|
mem_0 [label="mem[0]"];
|
||
|
mem_i [label="mem[i]"];
|
||
|
mem_i2 [label="mem[i]"];
|
||
|
i [ ];
|
||
|
1 [ ];
|
||
|
"1a" [label="1" ];
|
||
|
"1b" [label="1" ];
|
||
|
"1c" [label="1" ];
|
||
|
"1d" [label="1" ];
|
||
|
Finish [label="Finish"];
|
||
|
|
||
|
// operands
|
||
|
s_shift_1 [label=">>",];
|
||
|
i_lte_mem_0 [label=">=",];
|
||
|
|
||
|
// i <= mem[0]
|
||
|
mem_0 -> i_lte_mem_0;
|
||
|
i -> i_lte_mem_0;
|
||
|
{ rank=same; C1; i_lte_mem_0; }
|
||
|
{ rank=same; C0; i; mem_0;}
|
||
|
|
||
|
// if (i <= mem[0]) ->
|
||
|
i_lte_mem_0 -> mem_s_gte_1 [style=dotted, arrowhead=normal,label="True",lhead=cluster_i_lte_mem_0];
|
||
|
// else
|
||
|
i_lte_mem_0 -> Finish [style=dotted, arrowhead=normal,label="False",lhead=cluster_i_lte_mem_0];
|
||
|
{ rank=same; C9; Finish;}
|
||
|
|
||
|
subgraph i_lte_mem_0 {
|
||
|
mem_s_gte_1 [label=">"];
|
||
|
|
||
|
s_div_x [label="/",];
|
||
|
new_x [label="+",];
|
||
|
s_div_x_shift_1 [label=">>",];
|
||
|
x_shift_1 [label=">>",];
|
||
|
old_x_lte_new_x [label="¹>=",];
|
||
|
inc_i [label="+",];
|
||
|
|
||
|
// (s > 1)
|
||
|
mem_i -> mem_s_gte_1;
|
||
|
"1d" -> mem_s_gte_1;
|
||
|
{ rank=same; C2; mem_s_gte_1}
|
||
|
|
||
|
// if (s > 1)
|
||
|
mem_s_gte_1 -> s_shift_1 [style=dotted,arrowhead=normal,label="True"];
|
||
|
// else
|
||
|
mem_s_gte_1 -> inc_i [style=dotted,arrowhead=normal,label="False"];
|
||
|
|
||
|
subgraph if_mem_i_gte_1 {
|
||
|
// x = s >> 1
|
||
|
mem_i -> s_shift_1;
|
||
|
1 -> s_shift_1;
|
||
|
s_shift_1 -> x;
|
||
|
{ rank=same; C3; s_shift_1; x}
|
||
|
|
||
|
// (x >> 1)
|
||
|
x -> x_shift_1;
|
||
|
"1a" -> x_shift_1;
|
||
|
// (s/x)
|
||
|
mem_i -> s_div_x;
|
||
|
x -> s_div_x;
|
||
|
{ rank=same; C4; x_shift_1; s_div_x}
|
||
|
|
||
|
// ((s/x) >> 1)
|
||
|
s_div_x -> s_div_x_shift_1;
|
||
|
"1b" -> s_div_x_shift_1;
|
||
|
{ rank=same; C5; s_div_x_shift_1}
|
||
|
|
||
|
// (x >> 1) + ((s/x) >> 1);
|
||
|
x_shift_1 -> new_x;
|
||
|
s_div_x_shift_1 -> new_x;
|
||
|
{ rank=same; C6; new_x;}
|
||
|
|
||
|
// (old_x <= X)
|
||
|
x -> old_x_lte_new_x;
|
||
|
new_x -> old_x_lte_new_x;
|
||
|
new_x -> x [style=dotted,label="if(¹)"];
|
||
|
|
||
|
{ rank=same; C7; old_x_lte_new_x;}
|
||
|
|
||
|
// if (old_x <= X)
|
||
|
old_x_lte_new_x -> inc_i [style=dotted,arrowhead=normal,label="True"];
|
||
|
// else
|
||
|
|
||
|
|
||
|
"1c" -> inc_i;
|
||
|
i -> inc_i:ne;
|
||
|
inc_i:s -> i:s;
|
||
|
new_x -> mem_i2 [label="if(¹)", style=dotted];
|
||
|
{ rank=same; C8; inc_i; mem_i2};
|
||
|
}
|
||
|
}
|
||
|
}
|