| 摘要 |
PURPOSE:To improve an executing speed of a program in a pipeline system computer system by removing a control instruction of an unnecessary calculating exception mask. CONSTITUTION:A compiler 2 generates an object code 3 to hold always one of some kinds of different calculating exception mask condition based on an indication 1. The indication 1 is analyzed by an analyzing part 21 and the condition of the calculating exception mask to be held at the time of execution by an object code is decided at a calculating exception mask deciding part 22 and this is recorded into an executing time calculating exception mask 23. When the information of the assembling procedure quotation is received from the analyzing part 21, an assembling procedure calculating exception mask table 24 is retrieved and the condition of the calculating exception mask needed by the assembling procedure is taken out, and this is compared with the condition of the calculating exception mask of an executing time calculating exception mask recording 23. When both are different, the change of said mask is informed to an object code generating part 26. |
