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4 Generating code at run-time

To use GNU lightning, you should include the lightning.h file that is put in your include directory by the ‘make install’ command.

Each of the instructions above translates to a macro or function call. All you have to do is prepend jit_ (lowercase) to opcode names and JIT_ (uppercase) to register names. Of course, parameters are to be put between parentheses.

This small tutorial presents three examples: