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RTSA-lab01-CacheAnalysis
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Correct MustAnalysis.

This commit is contained in:
Nils Hölscher 2022-05-06 10:04:45 +02:00
parent c451a1eed0
commit 3429652f45
6 changed files with 69 additions and 67 deletions
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2
.vscode/launch.json vendored
View File

@ -13,7 +13,7 @@
"-load-pass-plugin",
"${workspaceFolder}/build/libCacheAnalysisPass.so",
"-passes=lru-misses",
"${workspaceFolder}/test/fft1.ll",
"${workspaceFolder}/test/cnt.ll",
"-o",
"/dev/null"
],

3
CacheAnalysisPass/CacheAnalysisPass.cpp
View File

@ -231,8 +231,7 @@ struct CacheAnalysisPass : PassInfoMixin<CacheAnalysisPass> {
}
if(LoopUnrolling)
AC.unrollLoops();
AC.fillAbstractCache(EntryAddress);
//AC.fillPath(EntryAddress);
AC.runMustAnalysis(EntryAddress);
if (DumpNodes)
AC.dumpNodes();
if (PrintEdgesPost)

22
helper.sh
View File

@ -111,29 +111,29 @@ case $1 in
docker run -i -d -v "$(pwd)"/.:/root:rw --name RTSAlab01 rtsalab01cacheanalysis
;;
evaluation | eval)
run "fft1"
echo "==== Correct fft1 ===="
echo "MustHits: 21"
run "crc"
echo "==== Correct crc ===="
echo "MustHits: 90"
echo
run "cnt"
echo "==== Correct cnt ===="
echo "MustHits: 4"
echo "MustHits: 28"
echo
run "duff"
echo "==== Correct duff ===="
echo "MustHits: 3"
echo "MustHits: 78"
echo
run "fft1"
echo "==== Correct fft1 ===="
echo "MustHits: 74"
echo
run "insertsort"
echo "==== Correct insertsort ===="
echo "MustHits: 2"
echo "MustHits: 61"
echo
run "matmult"
echo "==== Correct matmult ===="
echo "MustHits: 9"
echo
run "crc"
echo "==== Correct crc ===="
echo "MustHits: 6"
echo "MustHits: 34"
echo
;;
a | all)

46
include/AbstractCache.h
View File

@ -329,29 +329,35 @@ public: // everything is public, because IDGAF
}
/**
* @brief Idea fill the graph with the node and perform loop unrolling.
* @brief Perform must analysis in the Graph
*
* @param NodeNr
*/
void fillAbstractCache(unsigned int NodeNr) {
// if(isLoopHead(NodeNr))
Nodes[NodeNr].Computed = true;
for (unsigned int SuccNr : Nodes[NodeNr].Successors) {
Nodes[SuccNr];
// first Run
if (Nodes[SuccNr].Computed) {
// Join don't call
AbstractState Before(Nodes[SuccNr]);
Nodes[SuccNr].mustJoin(AbstractState(NodeNr, Address(NodeNr)));
void runMustAnalysis(unsigned int NodeNr) {
// Join and call until the state converges.
// Continue Joining until State converges
if (!(Before == Nodes[SuccNr])) {
fillAbstractCache(NodeNr);
}
Nodes[NodeNr].Computed++;
// fill all Successors, if filled Already join.
for (unsigned int SuccNr : Nodes[NodeNr].Successors) {
if (Nodes[SuccNr].Filled) {
// Join Successor with current State and its Address
Nodes[SuccNr].mustJoin(
AbstractState(Nodes[NodeNr], Address(Nodes[NodeNr].Addr)));
} else {
// Update and fill Succ
Nodes[SuccNr].fill(Nodes[NodeNr], NodeNr);
fillAbstractCache(SuccNr);
// Fill Successor with current State and its Address
Nodes[SuccNr].fill(Nodes[NodeNr], Address(Nodes[NodeNr].Addr));
// first Fill, so set Filled
Nodes[SuccNr].Filled = true;
}
// Continue Filling CFG on Successors.
for (unsigned int SuccNr : Nodes[NodeNr].Successors) {
// We can use this as we can safely assume a State has at most two successors.
// Due to branch instruction in llvmIR
if (Nodes[NodeNr].Computed > 2)
continue;
runMustAnalysis(SuccNr);
}
}
return;
@ -368,7 +374,7 @@ public: // everything is public, because IDGAF
auto Predecessor = Nodes[E.first];
for (unsigned int SuccessorAddr : E.second) {
// When successors Address is in predecessor, we have a Hit.
Hits += Predecessor.isHit(Address(SuccessorAddr)) ? 1 : 0;
Hits += Predecessor.isHit(Address(Nodes[SuccessorAddr].Addr)) ? 1 : 0;
}
}
return Hits;
@ -385,7 +391,7 @@ public: // everything is public, because IDGAF
auto Predecessor = Nodes[E.first];
for (unsigned int SuccessorAddr : E.second) {
// When successors Address is in predecessor, we have a Hit.
Misses += Predecessor.isHit(Address(SuccessorAddr)) ? 0 : 1;
Misses += Predecessor.isHit(Address(Nodes[SuccessorAddr].Addr)) ? 0 : 1;
}
}
return Misses;

41
include/AbstractState.h
View File

@ -30,7 +30,8 @@ public: // everything is public, because IDGAF
unsigned int Addr;
unsigned int Unrolled;
bool Computed = false;
int Computed = 0;
bool Filled = false;
// Only entries below this comment are needed for the exercise.
@ -164,6 +165,11 @@ public: // everything is public, because IDGAF
* @param Addr , Address
*/
void update(Address Addr) {
// If Updated Address is of Age 0 do nothing
if (std::find(Sets[Addr.Index].Associativity[0].Blocks.begin(),
Sets[Addr.Index].Associativity[0].Blocks.end(),
Addr.Tag) != Sets[Addr.Index].Associativity[0].Blocks.end())
return;
// This loopages all entries by one. 3 <-2, 2<-1, 1<-0
for (int I = 3; I > 0; I--) {
Sets[Addr.Index].Associativity[I] = Sets[Addr.Index].Associativity[I - 1];
@ -173,27 +179,6 @@ public: // everything is public, because IDGAF
Sets[Addr.Index].Associativity[0].Blocks = {Addr.Tag};
}
// /**
// * @brief Updates the AbstractState with given AbstractState
// *
// * @param UpdateState, State that gets merged into State with Age+1.
// */
// void update(AbstractState UpdateState) {
// for (auto S : UpdateState.Sets) {
// unsigned int Index = S.first;
// for (auto E : S.second.Associativity) {
// unsigned int Age = E.first;
// // If updated age is greater 4 The Tag is no longer in Cache.
// // Due to associativity of 4 per set.
// if (Age >= 4)
// break;
// for (auto B : E.second.Blocks) {
// Sets[Index].Associativity[Age].Blocks.push_back(B);
// }
// }
// }
// }
/**
* @brief Fills the AbstractState PreState and updates with PreAddress.
*
@ -202,6 +187,7 @@ public: // everything is public, because IDGAF
* @param PreAddr Address of PreState
*/
void fill(AbstractState PreState, Address PreAddr) {
bool Verbose = false;
// copy Pre State into this.
for (auto S : PreState.Sets) {
unsigned int Index = S.first;
@ -216,13 +202,24 @@ public: // everything is public, because IDGAF
}
}
}
if (Verbose) {
llvm::outs() << "Before:\n";
this->dump();
}
// update this with PreAddr
this->update(PreAddr);
if (Verbose) {
llvm::outs() << "Update Tag: " << PreAddr.Tag << "\n";
llvm::outs() << "Update Set: " << PreAddr.Index << "\n";
llvm::outs() << "After:\n";
this->dump();
}
}
void dump() {
llvm::outs() << Addr << " {\n";
llvm::outs() << "Unrolled: " << Unrolled << "\n";
llvm::outs() << "Computed: " << Computed << "\n";
llvm::outs() << "Predecessors: ";
for (auto PreNr : Predecessors) {
llvm::outs() << PreNr << " ";

22
poolhelper.sh
View File

@ -145,29 +145,29 @@ case $1 in
docker run -i -d -v "$(pwd)"/.:/root:rw --name RTSAlab01 rtsalab01cacheanalysis
;;
evaluation | eval)
run "fft1"
echo "==== Correct fft1 ===="
echo "MustHits: 21"
run "crc"
echo "==== Correct crc ===="
echo "MustHits: 90"
echo
run "cnt"
echo "==== Correct cnt ===="
echo "MustHits: 4"
echo "MustHits: 28"
echo
run "duff"
echo "==== Correct duff ===="
echo "MustHits: 3"
echo "MustHits: 78"
echo
run "fft1"
echo "==== Correct fft1 ===="
echo "MustHits: 74"
echo
run "insertsort"
echo "==== Correct insertsort ===="
echo "MustHits: 2"
echo "MustHits: 61"
echo
run "matmult"
echo "==== Correct matmult ===="
echo "MustHits: 9"
echo
run "crc"
echo "==== Correct crc ===="
echo "MustHits: 6"
echo "MustHits: 34"
echo
;;
a | all)