Firm is a C-library that provides a graph-based intermediate representation,
optimizations, and assembly code generation suitable for use in compilers.

Features
 - Completely graph-based, source- and target-independent intermediate
   representation in SSA form
 - Accompanying GCC-compatible C frontend with full C99 support
 - Extensive set of optimizations
 - High-quality register allocation
 - Mature code generation support for x86 (32-bit) and SPARC