Based on the analysis of GCC's structure, the porting and optimization of GCC on C4350AL is presented. GCC's x86 backend is extended for the compiler's recognition of C4350AL. According to the properties of C4350AL's architecture, a processor pipeline model description is built. The model's effect is tested on SPEC2006 benchmark. The experiment results show that this model has improved GCC's performance on C4350AL.