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Tweak default gate costs, cleanup "stat -tech cmos" 

Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2019-08-07 10:25:51 +02:00
parent 100c377451
commit 338f6765eb
2 changed files with 10 additions and 20 deletions
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8
kernel/cost.h
View File

@ -36,12 +36,12 @@ struct CellCosts
{ "$_NOR_", 4 },
{ "$_ANDNOT_", 4 },
{ "$_ORNOT_", 4 },
{ "$_XOR_", 6 },
{ "$_XNOR_", 6 },
{ "$_XOR_", 5 },
{ "$_XNOR_", 5 },
{ "$_AOI3_", 6 },
{ "$_OAI3_", 6 },
{ "$_AOI4_", 8 },
{ "$_OAI4_", 8 },
{ "$_AOI4_", 7 },
{ "$_OAI4_", 7 },
{ "$_MUX_", 4 },
{ "$_NMUX_", 4 }
};

22
passes/cmds/stat.cc
View File

@ -17,11 +17,10 @@
*
*/
#include "kernel/register.h"
#include "kernel/yosys.h"
#include "kernel/celltypes.h"
#include "passes/techmap/libparse.h"
#include "kernel/log.h"
#include "kernel/cost.h"
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
@ -228,25 +227,16 @@ struct statdata_t
{
int tran_cnt = 0;
bool tran_cnt_exact = true;
auto &gate_costs = CellCosts::cmos_gate_cost();
for (auto it : num_cells_by_type) {
auto ctype = it.first;
auto cnum = it.second;
if (ctype == "$_NOT_")
tran_cnt += 2*cnum;
else if (ctype.in("$_NAND_", "$_NOR_"))
tran_cnt += 4*cnum;
else if (ctype.in("$_AOI3_", "$_OAI3_"))
tran_cnt += 6*cnum;
else if (ctype.in("$_AOI4_", "$_OAI4_"))
tran_cnt += 8*cnum;
else if (ctype.in("$_NMUX_"))
tran_cnt += 10*cnum;
else if (ctype.in("$_MUX_", "$_XOR_", "$_XNOR_"))
tran_cnt += 12*cnum;
if (gate_costs.count(ctype))
tran_cnt += cnum * gate_costs.at(ctype);
else if (ctype.in("$_DFF_P_", "$_DFF_N_"))
tran_cnt += 16*cnum;
tran_cnt += cnum * 16;
else
tran_cnt_exact = false;
}