Daniel Carvalho has uploaded this change for review. (
https://gem5-review.googlesource.com/8621
Change subject: mem-cache: Vectorize C arrays in BaseSetAssoc.
......................................................................
mem-cache: Vectorize C arrays in BaseSetAssoc.
Transform BaseSetAssoc's arrays into C++ vectors to avoid unnecessary
resource management.
Change-Id: I656f42f29e5f9589eba491b410ca1df5a64f2f34
---
M src/mem/cache/tags/base.cc
M src/mem/cache/tags/base_set_assoc.cc
M src/mem/cache/tags/base_set_assoc.hh
3 files changed, 15 insertions(+), 23 deletions(-)
diff --git a/src/mem/cache/tags/base.cc b/src/mem/cache/tags/base.cc
index aa8a34f..8b52b74 100644
--- a/src/mem/cache/tags/base.cc
+++ b/src/mem/cache/tags/base.cc
@@ -63,7 +63,7 @@
std::max(p->tag_latency, p->data_latency)),
cache(nullptr),
warmupBound((p->warmup_percentage/100.0) * (p->size /
p->block_size)),
- warmedUp(false), numBlocks(0)
+ warmedUp(false), numBlocks(p->size / p->block_size)
{
}
diff --git a/src/mem/cache/tags/base_set_assoc.cc
b/src/mem/cache/tags/base_set_assoc.cc
index c398229..98c6f65 100644
--- a/src/mem/cache/tags/base_set_assoc.cc
+++ b/src/mem/cache/tags/base_set_assoc.cc
@@ -56,8 +56,11 @@
BaseSetAssoc::BaseSetAssoc(const Params *p)
:BaseTags(p), assoc(p->assoc), allocAssoc(p->assoc),
+ blks(p->size / p->block_size),
+ dataBlks(p->size), // Allocate data storage in one big chunk
numSets(p->size / (p->block_size * p->assoc)),
- sequentialAccess(p->sequential_access)
+ sequentialAccess(p->sequential_access),
+ sets(p->size / (p->block_size * p->assoc))
{
// Check parameters
if (blkSize < 4 || !isPowerOf2(blkSize)) {
@@ -74,12 +77,6 @@
setMask = numSets - 1;
tagShift = setShift + floorLog2(numSets);
- sets = new SetType[numSets];
- blks = new BlkType[numSets * assoc];
- // allocate data storage in one big chunk
- numBlocks = numSets * assoc;
- dataBlks = new uint8_t[numBlocks * blkSize];
-
unsigned blkIndex = 0; // index into blks array
for (unsigned i = 0; i < numSets; ++i) {
sets[i].assoc = assoc;
@@ -110,13 +107,6 @@
}
}
-BaseSetAssoc::~BaseSetAssoc()
-{
- delete [] dataBlks;
- delete [] blks;
- delete [] sets;
-}
-
CacheBlk*
BaseSetAssoc::findBlock(Addr addr, bool is_secure) const
{
diff --git a/src/mem/cache/tags/base_set_assoc.hh
b/src/mem/cache/tags/base_set_assoc.hh
index ef4c68b..65ba9dc 100644
--- a/src/mem/cache/tags/base_set_assoc.hh
+++ b/src/mem/cache/tags/base_set_assoc.hh
@@ -50,7 +50,7 @@
#include <cassert>
#include <cstring>
-#include <list>
+#include <vector>
#include "mem/cache/base.hh"
#include "mem/cache/blk.hh"
@@ -87,18 +87,20 @@
const unsigned assoc;
/** The allocatable associativity of the cache (alloc mask). */
unsigned allocAssoc;
+
+ /** The cache blocks. */
+ std::vector<BlkType> blks;
+ /** The data blocks, 1 per cache block. */
+ std::vector<uint8_t> dataBlks;
+
/** The number of sets in the cache. */
const unsigned numSets;
+
/** Whether tags and data are accessed sequentially. */
const bool sequentialAccess;
/** The cache sets. */
- SetType *sets;
-
- /** The cache blocks. */
- BlkType *blks;
- /** The data blocks, 1 per cache block. */
- uint8_t *dataBlks;
+ std::vector<SetType> sets;
/** The amount to shift the address to get the set. */
int setShift;
@@ -120,7 +122,7 @@
/**
* Destructor
*/
- virtual ~BaseSetAssoc();
+ virtual ~BaseSetAssoc() {};
/**
* Find the cache block given set and way
--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: I656f42f29e5f9589eba491b410ca1df5a64f2f34
Gerrit-Change-Number: 8621
Gerrit-PatchSet: 1
Gerrit-Owner: Daniel Carvalho <[email protected]>
Gerrit-MessageType: newchange
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