1. A method for hardware-based hardware description language (HDL) design analysis, comprising: performing assertion checking, at normal speed of operation in a hardware electronic system within a target hardware environment, the hardware electronic description specified by an HDL description, said HDL description having previously instrumented for said assertion checking in accordance with one or more directives that were specified by a user, wherein said assertion checking is instrumented in a designed instrumentation circuit incorporated in hardware inside the hardware electronic system and specified within the HDL description, the design instrumentation circuit coupled to signals of the electronic system to allow performing assertion checking at its normal speed of operation, wherein said assertion checking determines whether a predetermined condition happens in the hardware electronic system, and wherein said assertion checking allows an analysis of the hardware electronic system.