FUSING CONDITIONAL WRITE INSTRUCTIONS HAVING OPPOSITE CONDITIONS IN INSTRUCTION PROCESSING CIRCUITS AND RELATED PROCESSOR SYSTEMS METHODS AND COMPUTER READABLE MEDIA

摘要

Fusing conditional write instructions having opposite conditions in instruction processing circuits and related processor systems methods and computer readable media are disclosed. In one embodiment a first conditional write instruction writing a first value to a target register based on evaluating a first condition is detected by an instruction processing circuit. The circuit also detects a second conditional write instruction writing a second value to the target register based on evaluating a second condition tha t is a logical opposite of the first condition. Either the first condition or the second condition is selected as a fused instruction condition and corresponding values are selected as if true and if false values. A fused instruction is generated for selectively writing th e if true value to the target register if the fused instruction condition evaluates to true and selectively writing the if false value to the target register if the fused instruction condition evaluates to false.