cpu-o3: Update MicroTAGE history lengths for improved

Change-Id: Ica748d2d78c9414b4c5f36e0a8ccf5379b2cfabb

Author: Cao Jiaming

src/cpu/pred/BranchPredictor.py

@@ -1076,7 +1076,7 @@ class MicroTAGE(TimedBaseBTBPredictor):
     TTagPcShifts = VectorParam.Unsigned([1]*4  ,"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, 17, 29] ,"the BTB TAGE T0~Tn history length")
+    histLengths = VectorParam.Unsigned([5, 29, 57, 107] ,"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(2, "Number of ways per set")