cpu-o3 :back to normal

Change-Id: I8bbae34359507a81ce43977afcbd17c37d0526a1

Author: Cao Jiaming

src/cpu/pred/BranchPredictor.py

@@ -1071,15 +1071,15 @@ class MicroTAGE(TimedBaseBTBPredictor):
     updateOnRead = Param.Bool(True,"Enable update on read, no need to save tage meta in FTQ")
     # Keep vector parameters consistent with numPredictors to avoid constructor asserts.
     numPredictors = Param.Unsigned(4, "Number of TAGE predictors")
-    tableSizes = VectorParam.Unsigned([512] * 4,"the TAGE T0~Tn length")
-    TTagBitSizes = VectorParam.Unsigned([15,15,16,16],"the T0~Tn entry's tag bit size")
-    TTagPcShifts = VectorParam.Unsigned([1] * 4 ,"when the T0~Tn entry's tag generating, PC right shift")
+    tableSizes = VectorParam.Unsigned([512],"the TAGE T0~Tn length")
+    TTagBitSizes = VectorParam.Unsigned([16],"the T0~Tn entry's tag bit size")
+    TTagPcShifts = VectorParam.Unsigned([1] ,"when the T0~Tn entry's tag generating, PC right shift")
     blockSize = Param.Unsigned(32,"tage index function uses 32B aligned block address")
 
-    histLengths = VectorParam.Unsigned([5,9,16,24] ,"the BTB TAGE T0~Tn history length")
+    histLengths = VectorParam.Unsigned([16]  ,"the BTB TAGE T0~Tn history length")
     maxHistLen = Param.Unsigned(970,"The length of history passed from DBP")
     numTablesToAlloc = Param.Unsigned(1,"The number of table to allocated each time")
-    numWays = Param.Unsigned(1, "Number of ways per set")
+    numWays = Param.Unsigned(2, "Number of ways per set")
     baseTableSize = Param.Unsigned(256,"Base table size")
     maxBranchPositions = Param.Unsigned(32,"Maximum branch positions per 64-byte block")
     useAltOnNaSize = Param.Unsigned(128,"Size of the useAltOnNa table")