From d9f159a3b996b25683f33bcc8ae5142311639722 Mon Sep 17 00:00:00 2001
From: Kevin Lim <ktlim@umich.edu>
Date: Tue, 7 Nov 2006 13:53:06 -0500
Subject: Initialize mem dep unit properly.
src/cpu/o3/mem_dep_unit_impl.hh:
Initialize mem dep unit properly, add debug output.
--HG--
extra : convert_revision : 3c56dedfa57de1edc4b1c8f8d9bc94e18002eff2
---
src/cpu/o3/mem_dep_unit.hh | 2 +-
src/cpu/o3/mem_dep_unit_impl.hh | 13 +++++++++++++
2 files changed, 14 insertions(+), 1 deletion(-)
(limited to 'src/cpu/o3')
diff --git a/src/cpu/o3/mem_dep_unit.hh b/src/cpu/o3/mem_dep_unit.hh
index e399f0133..a12a3001b 100644
--- a/src/cpu/o3/mem_dep_unit.hh
+++ b/src/cpu/o3/mem_dep_unit.hh
@@ -69,7 +69,7 @@ class MemDepUnit {
typedef typename Impl::DynInstPtr DynInstPtr;
/** Empty constructor. Must call init() prior to using in this case. */
- MemDepUnit() {}
+ MemDepUnit();
/** Constructs a MemDepUnit with given parameters. */
MemDepUnit(Params *params);
diff --git a/src/cpu/o3/mem_dep_unit_impl.hh b/src/cpu/o3/mem_dep_unit_impl.hh
index c649ca385..f19980fd5 100644
--- a/src/cpu/o3/mem_dep_unit_impl.hh
+++ b/src/cpu/o3/mem_dep_unit_impl.hh
@@ -33,6 +33,13 @@
#include "cpu/o3/inst_queue.hh"
#include "cpu/o3/mem_dep_unit.hh"
+template <class MemDepPred, class Impl>
+MemDepUnit<MemDepPred, Impl>::MemDepUnit()
+ : loadBarrier(false), loadBarrierSN(0), storeBarrier(false),
+ storeBarrierSN(0), iqPtr(NULL)
+{
+}
+
template <class MemDepPred, class Impl>
MemDepUnit<MemDepPred, Impl>::MemDepUnit(Params *params)
: depPred(params->SSITSize, params->LFSTSize), loadBarrier(false),
@@ -160,8 +167,12 @@ MemDepUnit<MemDepPred, Impl>::insert(DynInstPtr &inst)
// producing memrefs/stores.
InstSeqNum producing_store;
if (inst->isLoad() && loadBarrier) {
+ DPRINTF(MemDepUnit, "Load barrier [sn:%lli] in flight\n",
+ loadBarrierSN);
producing_store = loadBarrierSN;
} else if (inst->isStore() && storeBarrier) {
+ DPRINTF(MemDepUnit, "Store barrier [sn:%lli] in flight\n",
+ storeBarrierSN);
producing_store = storeBarrierSN;
} else {
producing_store = depPred.checkInst(inst->readPC());
@@ -171,10 +182,12 @@ MemDepUnit<MemDepPred, Impl>::insert(DynInstPtr &inst)
// If there is a producing store, try to find the entry.
if (producing_store != 0) {
+ DPRINTF(MemDepUnit, "Searching for producer\n");
MemDepHashIt hash_it = memDepHash.find(producing_store);
if (hash_it != memDepHash.end()) {
store_entry = (*hash_it).second;
+ DPRINTF(MemDepUnit, "Proucer found\n");
}
}
--
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