Branch Implementation

• Requirements for your branch implementation in the ABM_SS VHDL model

  • Must use a Branch Target Address Cache
    • If a miss in the BTAC, then must take an extra clock cycle to compute the BTA
    • Your decision on storing BTAs of only taken branches, or storing BTAs of all branches
  • Must use a Branch History Table with 2-bit predictors
    • Can combine BTAC prediction with 2-bit prediction in anyway that you want
  • Must be able to support SPECMAX number of outstanding speculative branches

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