In VHDL-87, the‘last_valueattribute for a composite signal returns the aggregate of last values for each of the scalar elements of the signal. For example, suppose a bit-vector signalsinitially has the valueB“
Instead, there may be one or more other components in-between. For example, sometimes the processor 30 may include a map-dispatch-rename (MDR) unit 106 between the fetch and decode circuit 100 and the execution pipeline 112, which may map the operation(s) and/or micro-operation(s) to ...
operation of the second instruction is not carried out by the execute stage even though the second instruction was decoded by the decode stage, wherein the predicate condition for the skip instruction is specified by values of the predicate bits, and wherein the predicate condition is a ...
FIG. 3 is a flowchart illustrating operation of one embodiment of a control circuit shown in FIG. 2. FIG. 4 is a flowchart illustrating operation of one embodiment of an instruction queue shown in FIG. 2. FIG. 5 is a block diagram of one embodiment of pipelines within execution units sho...
operation, e.g., XOR, on predetermined bits of the count to generate a random value. In response to the processor determining a correct direction of a branch instruction predicted by the branch predictor, the branch predictor uses the random value generated by the hardware logic to make a ...
FIG. 2 is a block diagram of a portion of one embodiment of a fetch/decode/issue unit shown in FIG.1. FIG. 3 is a flowchart illustrating operation of one embodiment of a control circuit shown in FIG.2. FIG. 4 is a flowchart illustrating operation of one embodiment of an instruction ...
FIG. 3 is a flowchart illustrating operation of one embodiment of a control circuit shown in FIG. 2. FIG. 4 is a flowchart illustrating operation of one embodiment of an instruction queue shown in FIG. 2. FIG. 5 is a block diagram of one embodiment of pipelines within execution units sho...
(e.g. taken or not taken, for conditional branches, and/or branch target address predictions, for indirect branches and returns) and speculative operation may be performed based on the prediction. Instructions may be speculatively fetched and processed up to and/or including execution prior to ...