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authorNilay Vaish ext:(%2C%20Timothy%20Jones%20%3Ctimothy.jones%40cl.cam.ac.uk%3E) <nilay@cs.wisc.edu>2013-01-24 12:28:51 -0600
committerNilay Vaish ext:(%2C%20Timothy%20Jones%20%3Ctimothy.jones%40cl.cam.ac.uk%3E) <nilay@cs.wisc.edu>2013-01-24 12:28:51 -0600
commitdbeabedaf0f8d9ec0ea3331db2e44b1add53f79f (patch)
tree568d3b6007adf1a8d3ba6568fc5635e56afd3d53 /configs
parent11d5ffa108983d5d9742f0aad23f80c691f285ee (diff)
downloadgem5-dbeabedaf0f8d9ec0ea3331db2e44b1add53f79f.tar.xz
branch predictor: move out of o3 and inorder cpus
This patch moves the branch predictor files in the o3 and inorder directories to src/cpu/pred. This allows sharing the branch predictor across different cpu models. This patch was originally posted by Timothy Jones in July 2010 but never made it to the repository. --HG-- rename : src/cpu/o3/bpred_unit.cc => src/cpu/pred/bpred_unit.cc rename : src/cpu/o3/bpred_unit.hh => src/cpu/pred/bpred_unit.hh rename : src/cpu/o3/bpred_unit_impl.hh => src/cpu/pred/bpred_unit_impl.hh rename : src/cpu/o3/sat_counter.hh => src/cpu/pred/sat_counter.hh
Diffstat (limited to 'configs')
-rw-r--r--configs/common/O3_ARM_v7a.py7
1 files changed, 5 insertions, 2 deletions
diff --git a/configs/common/O3_ARM_v7a.py b/configs/common/O3_ARM_v7a.py
index f76128ae6..c85ba2c6c 100644
--- a/configs/common/O3_ARM_v7a.py
+++ b/configs/common/O3_ARM_v7a.py
@@ -87,8 +87,8 @@ class O3_ARM_v7a_FUP(FUPool):
FUList = [O3_ARM_v7a_Simple_Int(), O3_ARM_v7a_Complex_Int(),
O3_ARM_v7a_Load(), O3_ARM_v7a_Store(), O3_ARM_v7a_FP()]
-
-class O3_ARM_v7a_3(DerivO3CPU):
+# Tournament Branch Predictor
+class O3_ARM_v7a_BP(BranchPredictor):
predType = "tournament"
localCtrBits = 2
localHistoryTableSize = 64
@@ -102,6 +102,8 @@ class O3_ARM_v7a_3(DerivO3CPU):
BTBTagSize = 18
RASSize = 16
instShiftAmt = 2
+
+class O3_ARM_v7a_3(DerivO3CPU):
LQEntries = 16
SQEntries = 16
LSQDepCheckShift = 0
@@ -142,6 +144,7 @@ class O3_ARM_v7a_3(DerivO3CPU):
numROBEntries = 40
switched_out = False
+ branchPred = O3_ARM_v7a_BP()
# Instruction Cache
class O3_ARM_v7a_ICache(BaseCache):