Wrong assignment to enum variable from expression of different type

[dawidzim]

Hey!
Enum should be assignment only by enum type. LRM1800-2017 6.19.4: A cast shall be required for an expression that is assigned to an enum variable where the type of the expression is not equivalent to the enumeration type of the variable.
So in file design/ifu/ifu_ifc_ctl.sv need to be change two lines:
assign next_state[1] = (~state[1] & state[0] & ~reset_delayed & miss_f2 & ~goto_idle) | (state[1] & ~reset_delayed & ~mb_empty_mod & ~goto_idle);
for
assign next_state[1] = state_t'((~state[1] & state[0] & ~reset_delayed & miss_f2 & ~goto_idle) | (state[1] & ~reset_delayed & ~mb_empty_mod & ~goto_idle));

and
assign next_state[0] = (~goto_idle & leave_idle) | (state[0] & ~goto_idle) | (reset_delayed);
for
assign next_state[0] = state_t'((~goto_idle & leave_idle) | (state[0] & ~goto_idle) | (reset_delayed));
Like was done in pull request #49

[aprnath]

Thanks for reporting this, and #62. RTL will be fixed in the next release.