SIMD calculator, calculation method of the SIMD computation unit, processor and compiler

摘要

PPROBLEM TO BE SOLVED: To very speedily execute a Dekker's method by using an SIMD computing device. PSOLUTION: A computation-processing device 10 is provided with: a compiler 2 which compiles a program 1 using addition errors; a main storage part 4 which stores a plurality of instructions from the compiler 2; and an SIMD instruction executing part 6 which obtains calculation errors by computation using a single command multidata (SIMD) method, which executes a plurality of computations by one instruction, on the basis of instructions read out from the main storage part 4. The SIMD instruction executing part 6 is provided with: a register 177 for the SIMD, which has a first register group 171 and a second register group 172 which each comprise a plurality of registers; and a computation part 18 which executes, by the SIMD method, the processing for comparing the absolute values of two inputted values inputted from the first and second register groups 171 an 172 and then regards the larger absolute value as the first value and the smaller one as the second value. The computation part 18 executes, by the SIMD method, addition and subtraction by using the first and second values. PCOPYRIGHT: (C)2010,JPO&INPIT