private void HandleLdelemFixA(XILSInstr xilsi)
{
Array array = (Array)xilsi.StaticOperand;
var preds = RemapPreds(xilsi.Preds);
MemoryMappedStorage mms = GetDataLayout(array);
ArrayMemoryLayout layout = mms.Layout as ArrayMemoryLayout;
if (layout.ElementsPerWord > 1)
{
throw new NotImplementedException("Multiple elements per word not yet implemented");
}
MemoryRegion region = mms.Region;
IMarshalInfo minfo = region.MarshalInfo;
EmitIndexComputation(array);
TypeDescriptor indexType = TypeDescriptor.GetTypeOf(mms.BaseAddress);
TypeDescriptor dwType = minfo.GetRawWordType();
if (layout.WordsPerElement > 1)
{
Emit(_iset.Dup().CreateStk(1, indexType, indexType, indexType));
}
for (uint i = 0; i < layout.WordsPerElement; i++)
{
Emit(_iset.RdMem(region).CreateStk(preds, 1, indexType, dwType));
if (i < layout.WordsPerElement - 1)
{
Emit(_iset.Swap().CreateStk(2, indexType, dwType, dwType, indexType));
if (minfo.UseStrongPow2Alignment)
{
if (i + 1 < layout.WordsPerElement - 1)
{
Emit(_iset.Dup().CreateStk(1, indexType, indexType, indexType));
}
Unsigned inc = Unsigned.FromULong(i + 1, region.AddressWidth);
Emit(_iset.LdConst(inc).CreateStk(0, indexType));
Emit(_iset.Or().CreateStk(2, indexType, indexType, indexType));
}
else
{
Unsigned inc = Unsigned.FromULong(1, region.AddressWidth);
Emit(_iset.LdConst(inc).CreateStk(0, indexType));
Emit(_iset.Add().CreateStk(2, indexType, indexType, indexType));
if (i + 1 < layout.WordsPerElement - 1)
{
Emit(_iset.Dup().CreateStk(1, indexType, indexType, indexType));
}
}
}
}
uint concatTypeSize = minfo.WordSize * layout.WordsPerElement;
TypeDescriptor concatType = TypeDescriptor.GetTypeOf(
StdLogicVector._0s(concatTypeSize));
if (layout.WordsPerElement > 1)
{
TypeDescriptor[] stackTypes = new TypeDescriptor[layout.WordsPerElement + 1];
for (uint i = 0; i < layout.WordsPerElement; i++)
{
stackTypes[i] = dwType;
}
stackTypes[layout.WordsPerElement] = concatType;
Emit(_iset.Concat().CreateStk((int)layout.WordsPerElement, stackTypes));
}
TypeDescriptor elemTypeRaw = TypeDescriptor.GetTypeOf(
StdLogicVector._0s((int)layout.ElementLayout.SizeInBits));
if (concatTypeSize != layout.ElementLayout.SizeInBits)
{
Emit(_iset.Convert().CreateStk(1, concatType, elemTypeRaw));
}
TypeDescriptor elemType = layout.ElementLayout.LayoutedType;
Emit(_iset.Convert().CreateStk(1, elemTypeRaw, elemType));
}