cpu/pred/BranchPredictor.py

40     numThreads = Param.Unsigned(Parent.numThreads, "Number of threads")
49     indirectSets = Param.Unsigned(256, "Cache sets for indirect predictor")
50     indirectWays = Param.Unsigned(2, "Ways for indirect predictor")
51     indirectTagSize = Param.Unsigned(16, "Indirect target cache tag bits")
52     indirectPathLength = Param.Unsigned(3,
54     indirectGHRBits = Param.Unsigned(13, "Indirect GHR number of bits")
55     instShiftAmt = Param.Unsigned(2, "Number of bits to shift instructions by")
63     numThreads = Param.Unsigned(Parent.numThreads, "Number of threads")
64     BTBEntries = Param.Unsigned(4096, "Number of BTB entries")
65     BTBTagSize = Param.Unsigned(16, "Size of the BTB tags, in bits")
66     RASSize = Param.Unsigned(16, "RAS size")
67     instShiftAmt = Param.Unsigned(2, "Number of bits to shift instructions by")
77     localPredictorSize = Param.Unsigned(2048, "Size of local predictor")
78     localCtrBits = Param.Unsigned(2, "Bits per counter")
86     localPredictorSize = Param.Unsigned(2048, "Size of local predictor")
87     localCtrBits = Param.Unsigned(2, "Bits per counter")
88     localHistoryTableSize = Param.Unsigned(2048, "size of local history table")
89     globalPredictorSize = Param.Unsigned(8192, "Size of global predictor")
90     globalCtrBits = Param.Unsigned(2, "Bits per counter")
91     choicePredictorSize = Param.Unsigned(8192, "Size of choice predictor")
92     choiceCtrBits = Param.Unsigned(2, "Bits of choice counters")
100     globalPredictorSize = Param.Unsigned(8192, "Size of global predictor")
101     globalCtrBits = Param.Unsigned(2, "Bits per counter")
102     choicePredictorSize = Param.Unsigned(8192, "Size of choice predictor")
103     choiceCtrBits = Param.Unsigned(2, "Bits of choice counters")
110     numThreads = Param.Unsigned(Parent.numThreads, "Number of threads")
111     instShiftAmt = Param.Unsigned(Parent.instShiftAmt,
114     nHistoryTables = Param.Unsigned(7, "Number of history tables")
115     minHist = Param.Unsigned(5, "Minimum history size of TAGE")
116     maxHist = Param.Unsigned(130, "Maximum history size of TAGE")
118     tagTableTagWidths = VectorParam.Unsigned(
122     logRatioBiModalHystEntries = Param.Unsigned(2,
126     tagTableCounterBits = Param.Unsigned(3, "Number of tag table counter bits")
127     tagTableUBits = Param.Unsigned(2, "Number of tag table u bits")
129     histBufferSize = Param.Unsigned(2097152,
132     pathHistBits = Param.Unsigned(16, "Path history size")
133     logUResetPeriod = Param.Unsigned(18,
135     numUseAltOnNa = Param.Unsigned(1, "Number of USE_ALT_ON_NA counters")
137     useAltOnNaBits = Param.Unsigned(4, "Size of the USE_ALT_ON_NA counter(s)")
139     maxNumAlloc = Param.Unsigned(1,
169     logSizeLoopPred = Param.Unsigned(8, "Log size of the loop predictor")
170     withLoopBits = Param.Unsigned(7, "Size of the WITHLOOP counter")
171     loopTableAgeBits = Param.Unsigned(8, "Number of age bits per loop entry")
172     loopTableConfidenceBits = Param.Unsigned(2,
174     loopTableTagBits = Param.Unsigned(14, "Number of tag bits per loop entry")
175     loopTableIterBits = Param.Unsigned(14, "Nuber of iteration bits per loop")
176     logLoopTableAssoc = Param.Unsigned(2, "Log loop predictor associativity")
199     initialLoopIter = Param.Unsigned(1, "Initial iteration number")
200     initialLoopAge = Param.Unsigned(255, "Initial age value")
223     logTagTableSize = Param.Unsigned("Log size of each tag table")
225     shortTagsTageFactor = Param.Unsigned(
228     longTagsTageFactor = Param.Unsigned(
231     shortTagsSize = Param.Unsigned(8, "Size of the short tags")
233     longTagsSize = Param.Unsigned("Size of the long tags")
235     firstLongTagTable = Param.Unsigned("First table with long tags")
333     numEntriesFirstLocalHistories = Param.Unsigned(
336     bwnb = Param.Unsigned("Num global backward branch GEHL lengths")
338     logBwnb = Param.Unsigned("Log num of global backward branch GEHL entries")
342     lnb = Param.Unsigned("Num first local history GEHL lenghts")
344     logLnb = Param.Unsigned("Log number of first local history GEHL entries")
348     inb = Param.Unsigned(1, "Num IMLI GEHL lenghts")
350     logInb = Param.Unsigned("Log number of IMLI GEHL entries")
354     logBias = Param.Unsigned("Log size of Bias tables")
356     logSizeUp = Param.Unsigned(6,
359     chooserConfWidth = Param.Unsigned(7,
362     updateThresholdWidth = Param.Unsigned(12,
365     pUpdateThresholdWidth = Param.Unsigned(8,
368     extraWeightsWidth = Param.Unsigned(6,
371     scCountersWidth = Param.Unsigned(6, "Statistical corrector counters width")
408     pnb = Param.Unsigned(3, "Num variation global branch GEHL lengths")
410     logPnb = Param.Unsigned(9,
413     snb = Param.Unsigned(3, "Num second local history GEHL lenghts")
415     logSnb = Param.Unsigned(9,
418     tnb = Param.Unsigned(2, "Num third local history GEHL lenghts")
420     logTnb = Param.Unsigned(10,
423     imnb = Param.Unsigned(2, "Num second IMLI GEHL lenghts")
425     logImnb = Param.Unsigned(9, "Log number of second IMLI GEHL entries")
427     numEntriesSecondLocalHistories = Param.Unsigned(16,
429     numEntriesThirdLocalHistories = Param.Unsigned(16,
453     gnb = Param.Unsigned(2, "Num global branch GEHL lengths")
455     logGnb = Param.Unsigned(7, "Log number of global branch GEHL entries")
594     tunedHistoryLengths = VectorParam.Unsigned([0, 5, 12, 15, 21, 31, 43, 64,
645     gnb = Param.Unsigned(4, "Num global branch GEHL lengths")
647     logGnb = Param.Unsigned(10, "Log number of global branch GEHL entries")
649     pnb = Param.Unsigned(4, "Num variation global branch GEHL lengths")
652     logPnb = Param.Unsigned(9,
683     snb = Param.Unsigned(4, "Num second local history GEHL lenghts")
685     logSnb = Param.Unsigned(9,
688     tnb = Param.Unsigned(3, "Num third local history GEHL lenghts")
690     logTnb = Param.Unsigned(9,
693     numEntriesSecondLocalHistories = Param.Unsigned(16,
695     numEntriesThirdLocalHistories = Param.Unsigned(16,