mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-10-30 19:22:31 +00:00
Code Activity

wreduce: Keep more x-bits with -keepdc

Browse source
This commit is contained in:
Jannis Harder 2022-07-20 11:31:06 +02:00
parent 95db5a9d38
commit 428ad5b9fd
1 changed files with 4 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

8
passes/opt/wreduce.cc
View file

@ -166,8 +166,8 @@ struct WreduceWorker
for (int i = GetSize(sig_q)-1; i >= 0; i--) for (int i = GetSize(sig_q)-1; i >= 0; i--)
{ {
if (zero_ext && sig_d[i] == State::S0 && (initval[i] == State::S0 || initval[i] == State::Sx) && if (zero_ext && sig_d[i] == State::S0 && (initval[i] == State::S0 || (!config->keepdc && initval[i] == State::Sx)) &&
(!has_reset || i >= GetSize(rst_value) || rst_value[i] == State::S0 || rst_value[i] == State::Sx)) { (!has_reset || i >= GetSize(rst_value) || rst_value[i] == State::S0 || (!config->keepdc && rst_value[i] == State::Sx))) {
module->connect(sig_q[i], State::S0); module->connect(sig_q[i], State::S0);
initvals.remove_init(sig_q[i]); initvals.remove_init(sig_q[i]);
sig_d.remove(i); sig_d.remove(i);
@ -175,8 +175,8 @@ struct WreduceWorker
continue; continue;
} }
if (sign_ext && i > 0 && sig_d[i] == sig_d[i-1] && initval[i] == initval[i-1] && if (sign_ext && i > 0 && sig_d[i] == sig_d[i-1] && initval[i] == initval[i-1] && (!config->keepdc || initval[i] != State::Sx) &&
(!has_reset || i >= GetSize(rst_value) || rst_value[i] == rst_value[i-1])) { (!has_reset || i >= GetSize(rst_value) || (rst_value[i] == rst_value[i-1] && (!config->keepdc || rst_value[i] != State::Sx)))) {
module->connect(sig_q[i], sig_q[i-1]); module->connect(sig_q[i], sig_q[i-1]);
initvals.remove_init(sig_q[i]); initvals.remove_init(sig_q[i]);
sig_d.remove(i); sig_d.remove(i);