Incorporating Inter MMX~tm technology into a Java~tm JIT compiler

摘要

Intel~R MMX~tm technology can be exploited by a Java~tm JIT compiler to speedup the execution of integer operations. While translating bytecode into intel machine code, the com- piler identifies innermost loops that allow the same integer operations to be applied to multiple data elements in pan allel and generates code that uses intel~R MMXT~tm technol- ogy to execute these loops in SIMD fashion. In the con- text of JIT compilation, compile-time directly contributes to the run-time of the application. Therefore, limiting program analysis-time and synthesis-time is even more important than in a static compilation model. The compiler must also ensure that arithmetic precision and the exception handling seman- tics specified by the JVM are preserved.