private static GraphFIR.IO.IContainerIO VisitRef(VisitHelper helper, FIRRTL.Expression exp, GraphFIR.IO.IContainerIO currContainer, GraphFIR.IO.IOGender gender)
{
GraphFIR.IO.IContainerIO refContainer;
if (exp is FIRRTL.Reference reference)
{
refContainer = currContainer.GetIO(reference.Name);
}
else if (exp is FIRRTL.SubField subField)
{
var subContainer = VisitExp(helper, subField.Expr, gender);
refContainer = subContainer.GetIO(subField.Name);
}
else if (exp is FIRRTL.SubIndex subIndex)
{
var subVec = VisitExp(helper, subIndex.Expr, gender);
var vec = (GraphFIR.IO.Vector)subVec;
refContainer = vec.GetIndex(subIndex.Value);
}
else if (exp is FIRRTL.SubAccess subAccess)
{
var subVec = VisitExp(helper, subAccess.Expr, gender);
var vec = (GraphFIR.IO.Vector)subVec;
var index = (GraphFIR.IO.Output)VisitExp(helper, subAccess.Index, GraphFIR.IO.IOGender.Male);
if (gender == GraphFIR.IO.IOGender.Male)
{
GraphFIR.Mux node = new GraphFIR.Mux(vec.GetIOInOrder().ToList(), index, null, true);
helper.AddNodeToModule(node);
refContainer = node.Result;
}
else
{
GraphFIR.VectorAssign vecAssign = new GraphFIR.VectorAssign(vec, index, helper.Mod.EnableCon, null);
helper.AddNodeToModule(vecAssign);
refContainer = vecAssign.GetAssignIO();
}
}
else
{
throw new NotImplementedException();
}
if (refContainer is GraphFIR.IO.MemPort memPort)
{
//Memory ports in high level firrtl are acceses in a different
//way compared to low level firrtl. In high level firrtl, a
//memory port is treated like a wire connected to its datain/out
//sub field whereas in low level firrtl the subfield has to be
//specified.
if (memPort.FromHighLevelFIRRTL)
{
return(GetIOGender(helper, memPort, gender));
}
}
else
{
//Never return bigender io. Only this method should have to deal
//with that mess so the rest of the code doesn't have to.
//Dealing with it is ugly which is why i want to contain it.
if (refContainer is GraphFIR.IO.FIRIO firIO)
{
return(GetIOGender(helper, firIO, gender));
}
}
return(refContainer);
}
private static GraphFIR.IO.FIRIO VisitExp(VisitHelper helper, FIRRTL.Expression exp, GraphFIR.IO.IOGender gender)
{
if (exp is FIRRTL.RefLikeExpression)
{
return((GraphFIR.IO.FIRIO)VisitRef(helper, exp, helper.Mod, gender));
}
if (exp is FIRRTL.Literal lit)
{
GraphFIR.ConstValue value = new GraphFIR.ConstValue(lit);
helper.AddNodeToModule(value);
return(value.Result);
}
else if (exp is FIRRTL.DoPrim prim)
{
var args = prim.Args.Select(x => VisitExp(helper, x, GraphFIR.IO.IOGender.Male)).Cast <GraphFIR.IO.Output>().ToArray();
GraphFIR.FIRRTLPrimOP nodePrim;
if (prim.Op is FIRRTL.Add)
{
nodePrim = new GraphFIR.FIRAdd(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Sub)
{
nodePrim = new GraphFIR.FIRSub(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Mul)
{
nodePrim = new GraphFIR.FIRMul(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Div)
{
nodePrim = new GraphFIR.FIRDiv(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Rem)
{
nodePrim = new GraphFIR.FIRRem(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Dshl)
{
nodePrim = new GraphFIR.FIRDshl(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Dshr)
{
nodePrim = new GraphFIR.FIRDshr(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Cat)
{
nodePrim = new GraphFIR.FIRCat(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Eq)
{
nodePrim = new GraphFIR.FIREq(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Neq)
{
nodePrim = new GraphFIR.FIRNeq(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Geq)
{
nodePrim = new GraphFIR.FIRGeq(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Leq)
{
nodePrim = new GraphFIR.FIRLeq(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Gt)
{
nodePrim = new GraphFIR.FIRGt(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Lt)
{
nodePrim = new GraphFIR.FIRLt(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.And)
{
nodePrim = new GraphFIR.FIRAnd(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Or)
{
nodePrim = new GraphFIR.FIROr(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Xor)
{
nodePrim = new GraphFIR.FIRXor(args[0], args[1], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Head)
{
nodePrim = new GraphFIR.Head(args[0], prim.Type, (int)prim.Consts[0], prim);
}
else if (prim.Op is FIRRTL.Tail)
{
nodePrim = new GraphFIR.Tail(args[0], prim.Type, (int)prim.Consts[0], prim);
}
else if (prim.Op is FIRRTL.Bits)
{
nodePrim = new GraphFIR.BitExtract(args[0], prim.Type, (int)prim.Consts[1], (int)prim.Consts[0], prim);
}
else if (prim.Op is FIRRTL.Pad)
{
nodePrim = new GraphFIR.Pad(args[0], prim.Type, (int)prim.Consts[0], prim);
}
else if (prim.Op is FIRRTL.AsUInt)
{
nodePrim = new GraphFIR.FIRAsUInt(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.AsSInt)
{
nodePrim = new GraphFIR.FIRAsSInt(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.AsClock)
{
nodePrim = new GraphFIR.FIRAsClock(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Cvt)
{
nodePrim = new GraphFIR.FIRCvt(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Neg)
{
nodePrim = new GraphFIR.FIRNeg(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Not)
{
nodePrim = new GraphFIR.FIRNot(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Andr)
{
nodePrim = new GraphFIR.FIRAndr(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Orr)
{
nodePrim = new GraphFIR.FIROrr(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Xorr)
{
nodePrim = new GraphFIR.FIRXorr(args[0], prim.Type, prim);
}
else if (prim.Op is FIRRTL.Shl)
{
var constLit = new FIRRTL.UIntLiteral(prim.Consts[0], (int)prim.Consts[0].GetBitLength());
var constOutput = (GraphFIR.IO.Output)VisitExp(helper, constLit, GraphFIR.IO.IOGender.Male);
nodePrim = new GraphFIR.FIRShl(args[0], constOutput, prim.Type, prim);
}
else if (prim.Op is FIRRTL.Shr)
{
var constLit = new FIRRTL.UIntLiteral(prim.Consts[0], (int)prim.Consts[0].GetBitLength());
var constOutput = (GraphFIR.IO.Output)VisitExp(helper, constLit, GraphFIR.IO.IOGender.Male);
nodePrim = new GraphFIR.FIRShr(args[0], constOutput, prim.Type, prim);
}
else
{
throw new NotImplementedException();
}
helper.AddNodeToModule(nodePrim);
return(nodePrim.Result);
}
else if (exp is FIRRTL.Mux mux)
{
var cond = (GraphFIR.IO.Output)VisitExp(helper, mux.Cond, GraphFIR.IO.IOGender.Male);
var ifTrue = VisitExp(helper, mux.TrueValue, GraphFIR.IO.IOGender.Male);
var ifFalse = VisitExp(helper, mux.FalseValue, GraphFIR.IO.IOGender.Male);
GraphFIR.Mux node = new GraphFIR.Mux(new List <GraphFIR.IO.FIRIO>()
{
ifTrue, ifFalse
}, cond, mux);
helper.AddNodeToModule(node);
return(node.Result);
}
else if (exp is FIRRTL.ValidIf validIf)
{
var cond = (GraphFIR.IO.Output)VisitExp(helper, validIf.Cond, GraphFIR.IO.IOGender.Male);
var ifValid = VisitExp(helper, validIf.Value, GraphFIR.IO.IOGender.Male);
GraphFIR.Mux node = new GraphFIR.Mux(new List <GraphFIR.IO.FIRIO>()
{
ifValid
}, cond, validIf);
helper.AddNodeToModule(node);
return(node.Result);
}
else
{
throw new NotImplementedException();
}
}