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Update attributes after dff rewrite

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This commit is contained in:
Miodrag Milanovic 2024-07-22 11:28:14 +02:00
parent 15b917b349
commit 61a12a0e15
1 changed files with 4 additions and 0 deletions
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4
himbaechel/uarch/ng-ultra/pack.cc
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@ -145,6 +145,7 @@ void NgUltraPacker::dff_rewrite(CellInfo *cell)
if (net) {
if (net->name == ctx->id("$PACKER_GND")) {
log_warning("Removing reset on '%s' since it is always 0.\n", cell->name.c_str(ctx));
cell->setParam(ctx->id("dff_init"), Property(0,1));
cell->disconnectPort(id_R);
} else if (net->name == ctx->id("$PACKER_VCC")) {
log_error("Invalid DFF configuration, reset on '%s' is always 1.\n", cell->name.c_str(ctx));
@ -161,9 +162,11 @@ void NgUltraPacker::dff_rewrite(CellInfo *cell)
if (net) {
if (net->name == ctx->id("$PACKER_VCC")) {
log_warning("Removing load enable on '%s' since it is always 1.\n", cell->name.c_str(ctx));
cell->setParam(ctx->id("dff_load"), Property(0,0));
cell->disconnectPort(id_L);
} else if (net->name == ctx->id("$PACKER_GND")) {
log_warning("Converting to self loop, since load enable on '%s' is always 0.\n", cell->name.c_str(ctx));
cell->setParam(ctx->id("dff_load"), Property(0,0));
cell->disconnectPort(id_L);
cell->disconnectPort(id_I);
NetInfo *out = cell->getPort(id_O);
@ -185,6 +188,7 @@ void NgUltraPacker::ddfr_rewrite(CellInfo *cell)
if (net) {
if (net->name == ctx->id("$PACKER_VCC")) {
log_warning("Removing load enable on '%s' since it is always 1.\n", cell->name.c_str(ctx));
cell->setParam(ctx->id("dff_load"), Property(0,0));
cell->disconnectPort(id_L);
}
}