|
111
|
1 /* { dg-do compile } */
|
|
131
|
2 /* { dg-options "-O2" } */
|
|
111
|
3
|
|
|
4 extern double log10 (double __x);
|
|
|
5 extern double ceil (double __x);
|
|
|
6 extern double floor (double __x);
|
|
|
7 extern void free (void *__ptr);
|
|
|
8 extern void *my_malloc (unsigned int);
|
|
|
9 extern int num_rr_nodes;
|
|
|
10 static float get_cblock_trans (int *num_inputs_to_cblock,
|
|
|
11 int max_inputs_to_cblock,
|
|
|
12 float trans_cblock_to_lblock_buf,
|
|
|
13 float trans_sram_bit);
|
|
|
14 static float trans_per_mux (int num_inputs, float trans_sram_bit);
|
|
|
15 void
|
|
|
16 count_routing_transistors (int num_switch, float R_minW_nmos,
|
|
|
17 float R_minW_pmos)
|
|
|
18 {
|
|
|
19 int *num_inputs_to_cblock;
|
|
|
20 int iswitch, i, j, iseg, max_inputs_to_cblock;
|
|
|
21 float input_cblock_trans;
|
|
|
22 const float trans_sram_bit = 6.;
|
|
|
23 float trans_cblock_to_lblock_buf;
|
|
|
24 input_cblock_trans =
|
|
|
25 get_cblock_trans (num_inputs_to_cblock, max_inputs_to_cblock,
|
|
|
26 trans_cblock_to_lblock_buf, trans_sram_bit);
|
|
|
27 }
|
|
|
28
|
|
|
29 static float
|
|
|
30 get_cblock_trans (int *num_inputs_to_cblock, int max_inputs_to_cblock,
|
|
|
31 float trans_cblock_to_lblock_buf, float trans_sram_bit)
|
|
|
32 {
|
|
|
33 float *trans_per_cblock;
|
|
|
34 float trans_count;
|
|
|
35 int i, num_inputs;
|
|
|
36
|
|
|
37 trans_per_cblock =
|
|
|
38 (float *) my_malloc ((max_inputs_to_cblock + 1) * sizeof (float));
|
|
|
39 for (i = 1; i <= max_inputs_to_cblock; i++)
|
|
|
40 trans_per_cblock[i] =
|
|
|
41 trans_per_mux (i, trans_sram_bit) + trans_cblock_to_lblock_buf;
|
|
|
42 for (i = 0; i < num_rr_nodes; i++)
|
|
|
43 {
|
|
|
44 num_inputs = num_inputs_to_cblock[i];
|
|
|
45 trans_count += trans_per_cblock[num_inputs];
|
|
|
46 }
|
|
|
47 free (trans_per_cblock);
|
|
|
48 return (trans_count);
|
|
|
49 }
|
|
|
50
|
|
|
51 static float
|
|
|
52 trans_per_mux (int num_inputs, float trans_sram_bit)
|
|
|
53 {
|
|
|
54 int nlevels, ilevel, current_inps;
|
|
|
55 float ntrans = 0;
|
|
|
56
|
|
|
57 if (num_inputs <= 1)
|
|
|
58 return (0);
|
|
|
59 nlevels = ceil (log10 (num_inputs) / log10 (2.) - 0.00001);
|
|
|
60 current_inps = num_inputs;
|
|
|
61 for (ilevel = 1; ilevel <= nlevels; ilevel++)
|
|
|
62 {
|
|
|
63 ntrans += 2 * floor (current_inps / 2.);
|
|
|
64 current_inps = ceil (current_inps / 2.);
|
|
|
65 }
|
|
|
66 ntrans += trans_sram_bit * nlevels;
|
|
|
67 return (ntrans);
|
|
|
68 }
|
