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System and method of execution of register pointer instructions ahead of instruction issues

  • US 7,496,733 B2
  • Filed: 10/26/2007
  • Issued: 02/24/2009
  • Est. Priority Date: 04/21/2004
  • Status: Expired due to Term
First Claim
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1. A pipeline, comprising:

  • a plurality of operational stages, the stages including;

    a pointer register stage which stores pointer information and updates;

    a pointer dependency checking stage located upstream of the pointer register stage, which determines if instruction pointer dependencies exist and stalls an instruction if necessary to resolve inter-instruction dependencies in the pointer register stage;

    a dependence checking stage located downstream of the pointer register stage and configured to perform checking on instructions and stall an instruction if necessary to resolve inter-instruction dependencies in an instruction register file; and

    at least one pointer functional unit configured to provide pointer information updates directly to the pointer register stage.

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