GNU Lightning is a library that generates assembly code at run time.
Version: 1.2GNU lightning is a library that generates assembly language code at run-time; it is very fast, making it ideal for Just-In-Time compilers, and it abstracts over the target CPU, as it exposes to the clients a standardized RISC instruction set inspired by the MIPS and SPARC chips.
Operating System: Linux
GNU lightning 1.0 has been released and is usable in complex code generation tasks. The available backends cover the x86, SPARC and PowerPC architectures; the floating point interface is still experimental though, and developed for the x86 only.
There is also interested in adding more high-level features to lightning, such as a BURG-style tool, a tool to simplify the porting and make it less tedious (for example interfacing with Red Hat's CGEN tool) or a standardized library to synthesize instruction sequences such as multiplications as shifts and adds, or divisions as multiplication by the inverse.