How is Ultrassembler so fast?
10 days ago
- #Performance Optimization
- #RISC-V
- #C++
- Ultrassembler is a high-performance RISC-V assembler library designed for integration within C++ projects, avoiding the inefficiency of external assembler calls.
- It outperforms existing assemblers like GNU as and llvm-mc by 10-20 times in speed, processing approximately 1000 CPU instructions per RISC-V instruction assembled.
- Key optimizations include zero-overhead exception handling for error reporting, fast data structures for instruction and register lookup, and preallocated memory pools to minimize syscall overhead.
- Value speculation and smart search algorithms reduce parsing time, while compile-time templates ensure efficient immediate value verification.
- Memory-friendly struct organization, inline functions, and minimized string operations further enhance performance.
- Link-time optimization and compiler flag adjustments strip unnecessary overhead, making Ultrassembler exceptionally fast and efficient.