This article presents the design principles and efficient implementation techniques for ABCL/R3, an object-oriented concurrent reflective language. One of the most distinguished features of ABCL/R3 is compilation techniques using partial evaluation, which effectively remove interpretation from meta-level programs. The meta-level objects are designed so that they can be partially evaluated in an effective manner. Benchmark programs show that our compilation frameworks make object execution drastically faster than interpreter-based implementations, and achieves performance close to nonreflective compilers.

Run-time specialization (RTS) is a technique that efficiently generates specialized programs with respect to runtime values. For efficiently generating specialized programs, RTS constructs compiled native code fragments called templates at compile-time, and generates a specialized program by merely copying the templates. The generated programs are, on the other hand, less efficient, since the technique prevents many optimizations. This study proposes bytecode specialization (BCS), which generates programs in a bytecode language, and then translates the generated bytecode into native code by using Just-In-Time (JIT) compilers. The advantages of BCS are: (1) efficient specialization processes that are similar to RTS, (2) efficient specialized programs thanks to the optimizations of JIT compilers, and (3) independence of source-to-bytecode compilers and of bytecode-to-native compilers thanks to our proposed binding-time analysis, which directly handles bytecode programs. Thus far, we have...