Verification of RISC-V execution using OP_CCV

Posted by sjors

Mar 26, 2025/14:08 UTC

The discussion revolves around the utilization of OP_CCV and OP_CAT opcodes while primarily relying on existing ones within a programming project. A notable challenge arises from emulating a 32-bit system, particularly due to the 31-bit limitation imposed by CScriptNum. This constraint complicates the code, potentially making it less efficient and leading to the production of bulkier leaves in the system's output.

The inquiry suggests that a modest increase in the numerical capacity beyond the current limit could significantly simplify the code structure and enhance its performance, without necessarily requiring a leap to a 64-bit system as proposed in the Great Script Restoration project. This latter initiative is detailed further at Rusty Russell's blog, which advocates for a comprehensive restoration of previously disabled opcodes to a 64-bit context.

Moreover, the conversation opens the floor to discussing the potential benefits of re-enabling other currently disabled opcodes. Such a move is implied to possibly offer additional solutions or workarounds to the existing limitations faced in emulation efforts and overall code efficiency. The dialogue underscores a search for optimal coding practices within the constraints of the system and the exploration of how slight modifications in opcode capabilities could yield substantial improvements in system design and functionality.

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