[llvm-commits] [llvm] r77358 - /llvm/trunk/lib/Analysis/LoopDependenceAnalysis.cpp
Andreas Bolka
a at bolka.at
Tue Jul 28 12:49:49 PDT 2009
Author: abolka
Date: Tue Jul 28 14:49:49 2009
New Revision: 77358
URL: http://llvm.org/viewvc/llvm-project?rev=77358&view=rev
Log:
Add LDA statistics.
Modified:
llvm/trunk/lib/Analysis/LoopDependenceAnalysis.cpp
Modified: llvm/trunk/lib/Analysis/LoopDependenceAnalysis.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/LoopDependenceAnalysis.cpp?rev=77358&r1=77357&r2=77358&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/LoopDependenceAnalysis.cpp (original)
+++ llvm/trunk/lib/Analysis/LoopDependenceAnalysis.cpp Tue Jul 28 14:49:49 2009
@@ -18,6 +18,7 @@
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "lda"
+#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/LoopDependenceAnalysis.h"
#include "llvm/Analysis/LoopPass.h"
@@ -30,6 +31,12 @@
#include "llvm/Target/TargetData.h"
using namespace llvm;
+STATISTIC(NumAnswered, "Number of dependence queries answered");
+STATISTIC(NumAnalysed, "Number of distinct dependence pairs analysed");
+STATISTIC(NumDependent, "Number of pairs with dependent accesses");
+STATISTIC(NumIndependent, "Number of pairs with independent accesses");
+STATISTIC(NumUnknown, "Number of pairs with unknown accesses");
+
LoopPass *llvm::createLoopDependenceAnalysisPass() {
return new LoopDependenceAnalysis();
}
@@ -148,11 +155,18 @@
bool LoopDependenceAnalysis::depends(Value *A, Value *B) {
assert(isDependencePair(A, B) && "Values form no dependence pair!");
+ ++NumAnswered;
DependencePair *p;
if (!findOrInsertDependencePair(A, B, p)) {
// The pair is not cached, so analyse it.
+ ++NumAnalysed;
analysePair(p);
+ switch (p->Result) {
+ case Dependent: ++NumDependent; break;
+ case Independent: ++NumIndependent; break;
+ case Unknown: ++NumUnknown; break;
+ }
}
return p->Result != Independent;
}
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