There is a wide variety of immediate values encoded directly into the instruction stream. Those values are immediately usable by the functional units or dropped into the belt with no latency.
Most immediate values are morsel-sized.
A morsel sized bit index or count on the exu side.
A morsel sized count of the amount of arguments to call or loop.
This is a normal immediate argument for operations on the exu side. They are morsel-sized. The exact interpretation of the bit pattern depends on the operation domain, but usually are signed or unsigned integers.
A label on the flow side is encoded as a manifest constant of up to 32bit and is interpreted relative to the EBB or a special registerm depending on operation.
An immediate value on the flow side stored in an extension slot of morsel-size.
Some load and store operations can have special behaviors specified.
Speciefies the type of NaR to create in the NaR operation.
Similarly to labels, those are manifest constants interpretet relative to the current EBB or special registers. But offsets are for data, not for code. In some operations the offsets are also used to encode argument lists.
For indexed memory accesses this encodes the element size for the address calculation.
Encodes byte widths or element widths of belt values in a morsel.
The retire operation needs to specify many widths for the generated dummy arguments.