diff options
Diffstat (limited to 'src/cpu/pred/ltage.cc')
| -rw-r--r-- | src/cpu/pred/ltage.cc | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/cpu/pred/ltage.cc b/src/cpu/pred/ltage.cc index cab86e459..44fce4303 100644 --- a/src/cpu/pred/ltage.cc +++ b/src/cpu/pred/ltage.cc @@ -42,6 +42,7 @@ #include "base/intmath.hh" #include "base/logging.hh" +#include "base/random.hh" #include "base/trace.hh" #include "debug/Fetch.hh" #include "debug/LTage.hh" @@ -51,6 +52,12 @@ LTAGE::LTAGE(const LTAGEParams *params) { } +void +LTAGE::init() +{ + TAGE::init(); +} + //prediction bool LTAGE::predict(ThreadID tid, Addr branch_pc, bool cond_branch, void* &b) @@ -82,6 +89,7 @@ LTAGE::predict(ThreadID tid, Addr branch_pc, bool cond_branch, void* &b) return pred_taken; } +// PREDICTOR UPDATE void LTAGE::update(ThreadID tid, Addr branch_pc, bool taken, void* bp_history, bool squashed, const StaticInstPtr & inst, Addr corrTarget) @@ -105,7 +113,7 @@ LTAGE::update(ThreadID tid, Addr branch_pc, bool taken, void* bp_history, return; } - int nrand = TAGEBase::getRandom() & 3; + int nrand = random_mt.random<int>() & 3; if (bi->tageBranchInfo->condBranch) { DPRINTF(LTage, "Updating tables for branch:%lx; taken?:%d\n", branch_pc, taken); @@ -114,12 +122,10 @@ LTAGE::update(ThreadID tid, Addr branch_pc, bool taken, void* bp_history, loopPredictor->updateStats(taken, bi->lpBranchInfo); loopPredictor->condBranchUpdate(tid, branch_pc, taken, - bi->tageBranchInfo->tagePred, bi->lpBranchInfo, instShiftAmt, - TAGEBase::getRandom(), TAGEBase::getRandom(), - TAGEBase::getRandom()); + bi->tageBranchInfo->tagePred, bi->lpBranchInfo, instShiftAmt); tage->condBranchUpdate(tid, branch_pc, taken, bi->tageBranchInfo, - nrand, corrTarget); + nrand, corrTarget, bi->lpBranchInfo->predTaken); } tage->updateHistories(tid, branch_pc, taken, bi->tageBranchInfo, false, |