LLM Language Refactoring & ReGrade
When LLMs transform code between languages — C to Python and back — ReGrade uses packet-level comparison to verify that every version behaves identically, so you can migrate to memory-safe languages with confidence.
The Refactoring Loop
- 1Original application (V1.0) runs with real traffic recorded by ReGrade
- 2LLM transforms source code from C to a memory-safe language (e.g. Rust)
- 3ReGrade replays recorded traffic against the new language version
- 4ReGrade compares responses to verify behavioral equivalence
- 5LLM transforms the memory-safe code back to C, preserving safety fixes
- 6ReGrade verifies the final C code (V1.1) matches original behavior
Benefits
Memory safety verification
Confirm buffer overflows and memory vulnerabilities are eliminated without changing application behavior.
Automated equivalence testing
Packet-level comparison catches behavioral differences that unit tests miss during language transformations.
Confident language migrations
Move between languages knowing ReGrade verifies every API response matches across versions.
Faster refactoring cycles
LLM-driven transformations validated automatically, reducing manual review from days to minutes.