If you use SHC compiler Ver.7 or less, DSP instructions can't be generated from C or C++ language.
You must describe it by assembly language, or use DSP libraries.
If you use SHC compiler Ver.8 or more, DSP instructions can be generated by describing along the DSP-C language specifications.
Moreover, when ""repeat"" option is specified, a DSP expansion repeat loop may be generated.
A DSP expansion repeat loop is valid only for the CPU that has LDRC instruction.
|C/C++ Compiler Package for SuperH Family|