From 3f6874cb295695a225fca6825bfe24a4b97641fd Mon Sep 17 00:00:00 2001
From: Mitch Hayenga <mitch.hayenga@arm.com>
Date: Tue, 5 Apr 2016 11:44:27 -0500
Subject: cpu: Fix BTB threading oversight

The extant BTB code doesn't hash on the thread id but does check the
thread id for 'btb hits'.  This results in 1-thread of a multi-threaded
workload taking a BTB entry, and all other threads missing for the same branch
missing.
---
 src/cpu/pred/bpred_unit.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/cpu/pred/bpred_unit.cc')

diff --git a/src/cpu/pred/bpred_unit.cc b/src/cpu/pred/bpred_unit.cc
index 8bb84f836..c38927c8d 100644
--- a/src/cpu/pred/bpred_unit.cc
+++ b/src/cpu/pred/bpred_unit.cc
@@ -59,7 +59,8 @@ BPredUnit::BPredUnit(const Params *params)
       predHist(numThreads),
       BTB(params->BTBEntries,
           params->BTBTagSize,
-          params->instShiftAmt),
+          params->instShiftAmt,
+          params->numThreads),
       RAS(numThreads),
       instShiftAmt(params->instShiftAmt)
 {
-- 
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