IBM User Guide for Java V7 on Windows > IBM SDK for Java > The JIT compiler > How the JIT compiler optimizes code

Phase 5 - native code generation

Native code generation processes vary, depending on the platform architecture. Generally, during this phase of the compilation, the trees of a method are translated into machine code instructions; some small optimizations are performed according to architecture characteristics.

The compiled code is placed into a part of the JVM process space called the code cache; the location of the method in the code cache is recorded, so that future calls to it will call the compiled code. At any given time, the JVM process consists of the JVM executable files and a set of JIT-compiled code that is linked dynamically to the bytecode interpreter in the JVM.

Parent: How the JIT compiler optimizes code

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