Abstract: A system performs static program analysis with artifact reuse. The system identifies artifacts associated with the software program being analyzed. The system processes the identified artifacts for performing static program analysis and transmits either the artifacts or identifiers for the artifacts to a second processing device for performing program analysis. The second processing device receives the artifacts and uses the received identifiers to retrieve the artifacts from a networked storage system. The second device also retrieves stored summaries of previous program analysis from the networked storage system. The program analysis uses the retrieved artifacts to generate work units for static program analysis. The analysis is performed only for those work units that are determined to remain unchanged from previous static program analysis cycles.

Abstract: A repeat instruction (RPT) operates on one or more operands, but the RPT instruction includes only an opcode and does not specify locations of the operand or operands. The type of operation to be performed when the RPT instruction is executed depends upon an initial instruction. If, for example, the initial instruction is an ADD, then the RPT instruction causes an ADC operation to be performed, thereby facilitating efficient coding of an extended precision addition operation. The locations of the operands for the RPT instruction are assumed to be in predetermined memory locations. When coding a repeated operation, rather than following the initial instruction with one or more instructions of the same form, the initial instruction is followed by one or more of the shorter RPT instructions, thereby conserving memory space and facilitating backward compatibility with an instruction set that does not have the RPT instruction.

Abstract: A repeat instruction (RPT) operates on one or more operands, but the RPT instruction includes only an opcode and does not specify locations of the operand or operands. The type of operation to be performed when the RPT instruction is executed depends upon an initial instruction. If, for example, the initial instruction is an ADD, then the RPT instruction causes an ADC operation to be performed, thereby facilitating efficient coding of an extended precision addition operation. The locations of the operands for the RPT instruction are assumed to be in predetermined memory locations. When coding a repeated operation, rather than following the initial instruction with one or more instructions of the same form, the initial instruction is followed by one or more of the shorter RPT instructions, thereby conserving memory space and facilitating backward compatibility with an instruction set that does not have the RPT instruction.