Method and apparatus for executing conditional instruction predicated on execution result of predicate instruction

A method of executing at least a predicate instruction and a conditional instruction stored in a plurality of registers by one or more processors, wherein the conditional instruction is based on one or more values to be produced by the predicate instruction, the method comprising:

• extracting predicate-determining information of the predicate instruction and conditional instruction information of the conditional instruction;
• predicting execution results for the predicate instruction based on the predicate-determining information, and predicting execution results for the conditional instruction based on the predicted execution results for the predicate instruction and the conditional instruction information;
• executing the predicate instruction and the conditional instruction in parallel, wherein execution of the conditional instruction is based on the predicted execution results for the predicate instruction;
• acquiring the execution results of the predicate instruction and the conditional instruction;
• determining whether the predicted execution results are correct;
• if it is determined that the predicted execution results are correct, retiring the predicate instruction and the conditional instruction;
• and
• if it is determined that the predicted execution results are incorrect, retiring the predicate instruction and provide a remedy to the conditional instruction.

A non-transitory computer-readable medium storing instructions which, when executed by one or more processors, cause the one or more processors to execute at least a predicate instruction and a conditional instruction, wherein the conditional instruction is based on one or more values to be produced by the predicate instruction, and wherein the one or more processors are configured to:

• extract predicate-determining information of the predicate instruction and conditional instruction information of the conditional instruction;
• predict execution results for the predicate instruction based on the predicate-determining information, and predict execution results for the conditional instruction based on the predicted execution results for the predicate instruction and the conditional instruction information;
• execute the predicate instruction and the conditional instruction in parallel, wherein execution of the conditional instruction is based on the predicted execution results for the predicate instruction;
• acquire the execution results of the predicate instruction and the conditional instruction;
• determine whether the predicted execution results are correct;
• if it is determined that the predicted execution results are correct, retire the predicate instruction and the conditional instruction;
• and
• if it is determined that the predicted execution results are incorrect, retire the predicate instruction and provide a remedy to the conditional instruction.