摘要:
An extended DRAIN instruction is used to stall processing within a computing environment. The instruction includes an indication of the one or more processing stages at which processing is to be stalled. It also includes a control that allows processing to be stalled for additional cycles, as desired. The enhanced DRAIN instruction enables its use to be more granular and to have minimal impact with respect to each individual use.
摘要:
A computer processing system is provided. The computer processing system includes a first datastore that stores a subset of information associated with an instruction. A first stage of a processor pipeline writes the subset of information to the first datastore based on an execution of an operation associated with the instruction. A second stage of the pipeline initiates reprocessing of the operation associated with the instruction based on the subset of information stored in the first datastore.
摘要:
A method for selectively accelerating early instruction processing including receiving an instruction data that is normally processed in an execution stage of a processor pipeline, wherein a configuration of the instruction data allows a processing of the instruction data to be accelerated from the execution stage to an address generation stage that occurs earlier in the processor pipeline than the execution stage, determining whether the instruction data can be dispatched to the address generation stage to be processed without being delayed due to an unavailability of a processing resource needed for the processing of the instruction data in the address generation stage, dispatching the instruction data to be processed in the address generation stage if it can be dispatched without being delayed due to the unavailability of the processing resource, and dispatching the instruction data to be processed in the execution stage if it can not be dispatched without being delayed due to the unavailability of the processing resource, wherein the processing of the instruction data is selectively accelerated using an address generation interlock scheme. A corresponding system and computer program product.
摘要:
An extended DRAIN instruction is used to stall processing within a computing environment. The instruction includes an indication of the one or more processing stages at which processing is to be stalled. It also includes a control that allows processing to be stalled for additional cycles, as desired.
摘要:
A computer processing system is provided. The computer processing system includes a first datastore that stores a subset of information associated with an instruction. A first stage of a processor pipeline writes the subset of information to the first datastore based on an execution of an operation associated with the instruction. A second stage of the pipeline initiates reprocessing of the operation associated with the instruction based on the subset of information stored in the first datastore.
摘要:
A method and system for early instruction text based operand store compare avoidance in a processor are provided. The system includes a processor pipeline for processing instruction text in an instruction stream, where the instruction text includes operand address information. The system also includes delay logic to monitor the instruction stream. The delay logic performs a method that includes detecting a load instruction following a store instruction in the instruction stream, comparing the operand address information of the store instruction with the load instruction. The method also includes delaying the load instruction in the processor pipeline in response to detecting a common field value between the operand address information of the store instruction and the load instruction.
摘要:
Processing within a computing environment is facilitated using an extended DRAIN instruction. An extended DRAIN instruction is used to stall processing within a computing environment. The instruction includes an indication of the one or more processing stages at which processing is to be stalled. It also includes a control that allows processing to be stalled for additional cycles, as desired.
摘要:
An extended DRAIN instruction is used to stall processing within a computing environment. The instruction includes an indication of the one or more processing stages at which processing is to be stalled. It also includes a control that allows processing to be stalled for additional cycles, as desired.
摘要:
A method and system for early instruction text based operand store compare avoidance in a processor are provided. The system includes a processor pipeline for processing instruction text in an instruction stream, where the instruction text includes operand address information. The system also includes delay logic to monitor the instruction stream. The delay logic performs a method that includes detecting a load instruction following a store instruction in the instruction stream, comparing the operand address information of the store instruction with the load instruction. The method also includes delaying the load instruction in the processor pipeline in response to detecting a common field value between the operand address information of the store instruction and the load instruction.
摘要:
A method of changing a value of associated with a logical address in a computing device. The method includes: receiving an instruction at an instruction decoder, the instruction including a target register expressed as a logical value; determining at an instruction decoder that a result of the instruction is to set the target register to a constant value, the target register being in a physical register file associated with an execution unit; and mapping, in a register mapper, the logical address to a location represented by a special register tag.