Resource assignment apparatus

Details Resource assignment apparatus Resource assignment apparatus

1994-10-19

1997-11-04

Oberley, Alvin E.

395674, G06F 940

Patent

active

056849940

ABSTRACT:
A resource assignment apparatus for use with a software compiler or translator for compiling or translating a high-level source program into a machine language program, wherein the resource assignment apparatus assigns the variables in the high-level source program to system resources consisting of registers, memory, and the like. The resource assignment apparatus generates assignments consisting of the variables and their live ranges and finds the interference cost incurred when assigning these various assignments to each of the various resources, consisting of data registers, address registers, memory, and the like. The apparatus sorts the assignments into groups whereby these interference costs will be the lowest. The resource element minority assignment unit then carries out the assigning of each of these groups of sorted assignment. The various assignments with live ranges which interfere are assigned to different resource elements. When there are a number of resource elements to which an assignment can be assigned, the apparatus determines which is the most appropriate resource element, and assigns the assignment to this most appropriate resource element. When there is no resource element for which assigning is possible, the assignment is then moved to another resource group.

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