Different C7x DSP compiler versions are provided in different versions of the SDK. The new version of the compiler has some original bug fixes and compilation optimizations, and also provide some new inline functions to use, so basically the new version of the compiler is used. Older versions of software code can be compiled, but older versions of compilers sometimes cannot compile newer versions of software code. Therefore, when upgrading the TIDL software, the compiler needs to be upgraded to a new version, otherwise there will be problems that cannot be compiled. In the use of the compiler, a manual is provided to introduce the use of the compiler, especially the introduction of the relevant compilation instructions. For details, see the C7000 C/C++Optimizing Compiler Users Guide.