Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Tomoo Hamada

Hajime Ogawa

Shohei Michimoto

Ryoko Miyachi

Shuichi Takayama

Taketo Heishi

Toshiyuki Sakata

Teruo Kawabata

Yasuhiro Yamamoto

Hirotetsu Tomita

A compiler comprises an analysis unit that detects directives (options and pragmas) from a user to the compiler, an optimization unit that is made up of a processing unit (a global region allocation unit, a software pipelining unit, a loop unrolling unit, a 'if' conversion unit, and a pair instruction generation unit) that performs individual optimization processing designated by options and pragmas from a user, following the directives and the like from the analysis unit, etc. The global region allocation unit performs optimization processing, following designation of the maximum data size of variables to be allocated to a global region, designation of variables to be allocated to the global region, and options and pragmas regarding designation of variables not to be allocated in the global region.

Compiler apparatus with flexible optimization

A compiler apparatus enables description of a particular hardware module in the existing programming language, although the description has not been possible in hardware designing to input programming language. In the header file, a particular hardware indescribable in programming language is defined. And the compiler apparatus includes a parser unitanalyzing syntax of source program, an intermediate code converting unitconverting the syntactically analyzed source programto an intermediate code and code generating unitconverting the intermediate code to the RTL description. The intermediate code converting unitincludes a detecting unitdetecting a particular hardware defined in the header fileout of the source programand a replacing unitreplacing the detected particular hardware in the detecting unitwith the intermediate code corresponding to a particular hardware.

Compiler

Growing community of inventors

Ibaraki, Japan

Tomoo Hamada