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Synopsys Behavioural Compiler
... was an advanced (for the late 90's) compiler that extended RTL synthesis semantics.
»Synopsys Behavioural Compiler Tutorial
- Provided compile-time loop unrolling,
- Operations on variables freely moved between clock cycles,
- Inserted additional cycles to overcome hazards (user's clock is called a `super state'),
- Provided temporally-floating I/O with compiler-chosen pipelining between ports.
Problem: Existing RTL paradigms not preserved within the same source file: existing syntax has new meaning.
Ulitmately, it seems designers felt they had lost control over detailed structure in critical places.
Citations:
- Understanding Behavioral Synthesis, A Practical Guide to High Level Design by John P Elliott;
Kluwer Academic Publishers ISBN 0-7923-8542-X
- Behavioral Synthesis, Digital System Design Using the Synopsys Behavioral Compiler by David W. Knapp, Prentice Hall, ISBN 0-13-569252-0