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Diffstat (limited to 'src/cpu/pred/BranchPredictor.py')
| -rw-r--r-- | src/cpu/pred/BranchPredictor.py | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/cpu/pred/BranchPredictor.py b/src/cpu/pred/BranchPredictor.py index 2c622cd02..0c1e9c284 100644 --- a/src/cpu/pred/BranchPredictor.py +++ b/src/cpu/pred/BranchPredictor.py @@ -143,3 +143,19 @@ class LTAGE(TAGE): loopTableIterBits = Param.Unsigned(14, "Nuber of iteration bits per loop") logLoopTableAssoc = Param.Unsigned(2, "Log loop predictor associativity") + # Parameters for enabling modifications to the loop predictor + # They have been copied from ISL-TAGE + # (https://www.jilp.org/jwac-2/program/03_seznec.tgz) + # + # All of them should be disabled to match the original LTAGE implementation + # (http://hpca23.cse.tamu.edu/taco/camino/cbp2/cbp-src/realistic-seznec.h) + + # Add speculation + useSpeculation = Param.Bool(False, "Use speculation") + + # Add hashing for calculating the loop table index + useHashing = Param.Bool(False, "Use hashing") + + # Add a direction bit to the loop table entries + useDirectionBit = Param.Bool(False, "Use direction info") + |