codegen: added emit_cmpb_imm_reg
codegen: added emit_cmpb_imm_reg

needed for logical or

riginding/dora,dinfuehr/dora,dinfuehr/dora,dinfuehr/dora,riginding/dora,riginding/dora,dinfuehr/dora,dinfuehr/dora,riginding/dora,riginding/dora,dinfuehr/dora,riginding/dora,riginding/dora