Fujitsu Corporation

Takahiro Miyoshi

Shuichi Chiba

Tomoko Nikko

An information processing device includes: a memory; and a processor coupled to the memory, the processor specifies a function including a branch instruction including one or more branch destinations in a program code; determines, based on a first number of arguments which are referenced in one branch destination among the one or more branch destinations, whether or not an argument of one function obtained by functionalizing the one branch destination are passable through a register; and converts, when determining to be passable, the specified function using one or more functions obtained by functionalizing the one or more branch destinations and does not convert, when determining not to be passable, the specified function.

Information processing device, compiler method, and recording medium recording compiler program

A memory stores first code that compares a value of a variable with each of three or more comparison values, and that performs branch control in accordance with comparison results. A processor determines a minimum comparison value and a maximum comparison value among the comparison values. The processor converts the first code into second code that compares the value of the variable with the minimum comparison value and the maximum comparison value, and that performs the branch control without performing comparisons with the other comparison values when the value of the variable is less than the minimum comparison value or greater than the maximum comparison value.

Compiling apparatus and compiling method

A compiling apparatus detects a plurality of branch instructions, each of which specifies execution of branch processing on the basis of a result of a comparison operation between integers and indicates the same jump destination, in a first code. The compiling apparatus converts the plurality of branch instructions into an instruction group having fewer branch instructions than the plurality of branch instructions by using logical and arithmetic instructions. The compiling apparatus generates a second code using the converted instruction group when the number of cycles of processing based on the converted instruction group is smaller than that based on the plurality of branch instructions.

Growing community of inventors

Numazu, Japan

Takahiro Miyoshi