Preserve shortreal hierarchy width

[muzafferkal]

Keep 32-bit hierarchy metadata while using eight-byte real storage for promoted shortreal values.

[muzafferkal]

@rfuest how do I get this reviewed pls?

[rfuest]

I think that both GTKWave branches ignore the bit width for real and shortreal variables, so this change shouldn't break anything.

Why do you require this change for shortreal when real still outputs 0 as the bitwidth? I would prefer to have one consistent behavior for all floating point types.

[muzafferkal]

I think that both GTKWave branches ignore the bit width for real and shortreal variables, so this change shouldn't break anything.

Why do you require this change for shortreal when real still outputs 0 as the bitwidth? I would prefer to have one consistent behavior for all floating point types.

I'm trying to add shortreal support to verilator and Wilson asked me to make this change here first so that verilator can inherit.

[muzafferkal]

@rfuest could you please give me some guidance on how to proceed here?

[rfuest]

Sorry for the late reply.

I still don't understand why this change is required, if the bit width is ignored for all real values. The 32 bit width is implied in the SV_SHORTREAL vartype. Could you point me to where something breaks without this change applied?