c2fcac7c0d
cpu/base_dyn_inst.cc:
Remove unused commented out code.
cpu/base_dyn_inst.hh:
Fix up comments.
cpu/beta_cpu/2bit_local_pred.cc:
Reorder code to match header file.
cpu/beta_cpu/2bit_local_pred.hh:
Update comments.
cpu/beta_cpu/alpha_dyn_inst.hh:
Remove useless comments.
cpu/beta_cpu/alpha_dyn_inst_impl.hh:
cpu/beta_cpu/alpha_full_cpu_impl.hh:
cpu/beta_cpu/comm.hh:
cpu/beta_cpu/iew_impl.hh:
Remove unused commented code.
cpu/beta_cpu/alpha_full_cpu.hh:
Remove obsolete comment.
cpu/beta_cpu/alpha_impl.hh:
cpu/beta_cpu/full_cpu.hh:
Alphabetize includes.
cpu/beta_cpu/bpred_unit.hh:
Remove unused global history code.
cpu/beta_cpu/btb.hh:
cpu/beta_cpu/free_list.hh:
Use full path in #defines.
cpu/beta_cpu/commit.hh:
cpu/beta_cpu/decode.hh:
Reorder functions.
cpu/beta_cpu/commit_impl.hh:
Remove obsolete commented code.
cpu/beta_cpu/fetch.hh:
Remove obsolete comments.
cpu/beta_cpu/fetch_impl.hh:
cpu/beta_cpu/rename_impl.hh:
Remove commented code.
cpu/beta_cpu/full_cpu.cc:
Remove useless defines.
cpu/beta_cpu/inst_queue.hh:
Use full path for #defines.
cpu/beta_cpu/inst_queue_impl.hh:
Reorder functions to match header file.
cpu/beta_cpu/mem_dep_unit.hh:
Use full path name for #defines.
cpu/beta_cpu/ras.hh:
Use full path names for #defines. Remove mod operation.
cpu/beta_cpu/regfile.hh:
Remove unused commented code, fix up current comments.
cpu/beta_cpu/tournament_pred.cc:
cpu/beta_cpu/tournament_pred.hh:
Update programming style.
--HG--
extra : convert_revision : fb9d18a853f58a1108ff827e3c123d5b52a0608a
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
#ifndef __CPU_BETA_CPU_2BIT_LOCAL_PRED_HH__
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#define __CPU_BETA_CPU_2BIT_LOCAL_PRED_HH__
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// For Addr type.
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#include "arch/alpha/isa_traits.hh"
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#include "cpu/beta_cpu/sat_counter.hh"
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class DefaultBP
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{
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public:
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/**
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* Default branch predictor constructor.
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*/
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DefaultBP(unsigned localPredictorSize, unsigned localCtrBits,
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unsigned instShiftAmt);
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/**
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* Looks up the given address in the branch predictor and returns
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* a true/false value as to whether it is taken.
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* @param branch_addr The address of the branch to look up.
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* @return Whether or not the branch is taken.
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*/
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bool lookup(Addr &branch_addr);
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/**
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* Updates the branch predictor with the actual result of a branch.
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* @param branch_addr The address of the branch to update.
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* @param taken Whether or not the branch was taken.
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*/
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void update(Addr &branch_addr, bool taken);
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private:
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/** Returns the taken/not taken prediction given the value of the
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* counter.
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*/
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inline bool getPrediction(uint8_t &count);
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/** Calculates the local index based on the PC. */
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inline unsigned getLocalIndex(Addr &PC);
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/** Array of counters that make up the local predictor. */
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SatCounter *localCtrs;
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/** Size of the local predictor. */
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unsigned localPredictorSize;
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/** Number of bits of the local predictor's counters. */
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unsigned localCtrBits;
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/** Number of bits to shift the PC when calculating index. */
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unsigned instShiftAmt;
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/** Mask to get index bits. */
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unsigned indexMask;
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};
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#endif // __CPU_BETA_CPU_2BIT_LOCAL_PRED_HH__
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