Abstract A language processing system comprises an instruction parsing portion parsing instruction statement contained in a source program written by a high-level language and an assembler language in admixing manner, a register information discriminating portion discriminating if the instruction statement parsed by the instruction parsing portion is a register information indicative of a register value corresponding to a register operating instruction described by the assembler language, an intermediate code generating portion for generating an intermediate code of the instruction statement, a register information storage portion for storing the register information discriminated by the register information discriminating portion, a code optimizing portion for performing optimization by deleting a register operating instruction with respect to the register operating instruction code in the intermediate code when the register value indicated therein is the same as a register value indicated by an immediately preceding register information or an immediately preceding register operating instruction code, and code generating portion for generating a machine language code from the intermediate code optimized through the code optimization and outputting an object code.
A method for deleting redundant instructions from a source code written in a high level language comprising in-line assembly language instructions, comprising the steps of: inputting a source file written in a high level language comprising in-line assembly language instructions pertaining to specific registers; parsing individual instruction statements from said source file and storing as intermediate codes; reading said intermediate codes one at a time; determining if a specific register is designated in said intermediate code from an assembly instruction and if so, storing a register address of said designated register; determining if an operating instruction in said intermediate code from a high-level language instruction designates a specific register address; comparing said stored register address with said specific register address from said high-level language to identify a redundant intermediate code; and deleting the redundant intermediate code.
Claim 2
Independent Claim
136 words
A method for deleting redundant instructions from a source code written in a high level language comprising in-line assembly language instructions, comprising the steps of: inputting a source file written in a high level language comprising in-line assembly language instructions pertaining to specific registers; parsing individual instruction statements from said source file and storing as intermediate codes; reading said intermediate codes one at a time; determining if a specific register is designated in said intermediate code from an assembly instruction and if so, storing a register address of said designated register; determining if an operating instruction in said intermediate code from a high-level language instruction designates a specific register address; comparing said stored register address with said specific register address from said high-level language to identify a redundant intermediate code; and deleting the redundant intermediate code.
Claim 3
Dependent Claim
22 words
A method for deleting redundant instructions from a source code as recited in claim 1, wherein said high level language is C.
Claim 4
Dependent Claim
22 words
A method for deleting redundant instructions from a source code as recited in claim 1, wherein said high level language is COBOL.
Claim 5
Dependent Claim
22 words
A method for deleting redundant instructions from a source code as recited in claim 1, wherein said high level language is Unix.