Abstract: In an embodiment, a processor may include an execution circuit to execute a plurality of instructions. The processor may also include a prediction circuit to: in response to a detection of a first target instruction in a program, identify a prediction data entry associated with a path history for the first target instruction, the identified prediction data entry to indicate an offset distance from the first target instruction to a predicted next taken branch of the program; and determine the predicted next taken branch of the program based on the offset distance indicated by the identified prediction data entry. Other embodiments are described and claimed.

Abstract: Technologies for dynamic acceleration of general-purpose code include a computing device having a general-purpose processor core and one or more hardware accelerators. The computing device identifies an acceleration candidate in an application that is targeted to the processor core. The acceleration candidate may be a long-running computation of the application. The computing device translates the acceleration candidate into a translated executable targeted to the hardware accelerator. The computing device determines whether to offload execution of the acceleration candidate and, if so, executes the translated executable with the hardware accelerator. The computing device may translate the acceleration candidate into multiple translated executables, each targeted to a different hardware accelerator. The computing device may select among the translated executables in response to determining to offload execution.

Abstract: Embodiments of apparatuses, methods, and systems for misprediction-triggered local history-based branch prediction are described. In one embodiments, an apparatus includes a current pattern table and a local pattern table. The current pattern table has a plurality of entries, each entry in which to store a plurality of pattern lengths of a current pattern of one of a plurality of branch instructions. The local pattern table is to provide a first branch prediction based on the current pattern.

Abstract: A processor may include a baseline branch predictor and an empirical branch bias override circuit. The baseline branch predictor may receive a branch instruction associated with a given address identifier, and generate, based on a global branch history, an initial prediction of a branch direction for the instruction. The empirical branch bias override circuit may determine, dependent on a direction of an observed branch direction bias in executed branch instruction instances associated with the address identifier, whether the initial prediction should be overridden, may determine, in response to determining that the initial prediction should be overridden, a final prediction that matches the observed branch direction bias, or may determine, in response determining that the initial prediction should not be overridden, a final prediction that matches the initial prediction.

Abstract: In one embodiment, a processor comprises a branch predictor to generate, in association with a program loop, a frozen history vector comprising a snapshot of a branch history vector; track a current iteration of the program loop; and provide a prediction for a branch instruction associated with the program loop, the prediction based on the frozen history vector and the current iteration of the program loop.

Abstract: Embodiments of apparatuses, methods, and systems for misprediction-triggered local history-based branch prediction are described. In one embodiments, an apparatus includes a current pattern table and a local pattern table. The current pattern table has a plurality of entries, each entry in which to store a plurality of pattern lengths of a current pattern of one of a plurality of branch instructions. The local pattern table is to provide a first branch prediction based on the current pattern.

Abstract: A processor may include a baseline branch predictor and an empirical branch bias override circuit. The baseline branch predictor may receive a branch instruction associated with a given address identifier, and generate, based on a global branch history, an initial prediction of a branch direction for the instruction. The empirical branch bias override circuit may determine, dependent on a direction of an observed branch direction bias in executed branch instruction instances associated with the address identifier, whether the initial prediction should be overridden, may determine, in response to determining that the initial prediction should be overridden, a final prediction that matches the observed branch direction bias, or may determine, in response determining that the initial prediction should not be overridden, a final prediction that matches the initial prediction.

Abstract: Technologies for dynamic acceleration of general-purpose code include a computing device having a general-purpose processor core and one or more hardware accelerators. The computing device identifies an acceleration candidate in an application that is targeted to the processor core. The acceleration candidate may be a long-running computation of the application. The computing device translates the acceleration candidate into a translated executable targeted to the hardware accelerator. The computing device determines whether to offload execution of the acceleration candidate and, if so, executes the translated executable with the hardware accelerator. The computing device may translate the acceleration candidate into multiple translated executables, each targeted to a different hardware accelerator. The computing device may select among the translated executables in response to determining to offload execution.