[llvm-commits] [parallel] CVS: llvm/lib/Analysis/AliasAnalysisEvaluator.cpp
Misha Brukman
brukman at cs.uiuc.edu
Thu Mar 11 18:45:01 PST 2004
Changes in directory llvm/lib/Analysis:
AliasAnalysisEvaluator.cpp updated: 1.10 -> 1.10.4.1
---
Log message:
Test mod/ref info analysis, now that DSA supports it with functions vs. values.
---
Diffs of the changes: (+93 -24)
Index: llvm/lib/Analysis/AliasAnalysisEvaluator.cpp
diff -u llvm/lib/Analysis/AliasAnalysisEvaluator.cpp:1.10 llvm/lib/Analysis/AliasAnalysisEvaluator.cpp:1.10.4.1
--- llvm/lib/Analysis/AliasAnalysisEvaluator.cpp:1.10 Wed Dec 10 09:33:59 2003
+++ llvm/lib/Analysis/AliasAnalysisEvaluator.cpp Thu Mar 11 18:44:05 2004
@@ -17,23 +17,31 @@
//
//===----------------------------------------------------------------------===//
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/Pass.h"
#include "llvm/Function.h"
+#include "llvm/iOther.h"
+#include "llvm/iTerminators.h"
+#include "llvm/Pass.h"
#include "llvm/Type.h"
-#include "llvm/Support/InstIterator.h"
+#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Assembly/Writer.h"
+#include "llvm/Support/InstIterator.h"
#include "Support/CommandLine.h"
#include <set>
using namespace llvm;
namespace {
- cl::opt<bool> PrintNo ("print-no-aliases", cl::ReallyHidden);
- cl::opt<bool> PrintMay ("print-may-aliases", cl::ReallyHidden);
- cl::opt<bool> PrintMust("print-must-aliases", cl::ReallyHidden);
+ cl::opt<bool> PrintNoAlias("print-no-aliases", cl::ReallyHidden);
+ cl::opt<bool> PrintMayAlias("print-may-aliases", cl::ReallyHidden);
+ cl::opt<bool> PrintMustAlias("print-must-aliases", cl::ReallyHidden);
+
+ cl::opt<bool> PrintNoModRef("print-no-modref", cl::ReallyHidden);
+ cl::opt<bool> PrintMod("print-mod", cl::ReallyHidden);
+ cl::opt<bool> PrintRef("print-ref", cl::ReallyHidden);
+ cl::opt<bool> PrintModRef("print-modref", cl::ReallyHidden);
class AAEval : public FunctionPass {
- unsigned No, May, Must;
+ unsigned NoAlias, MayAlias, MustAlias;
+ unsigned NoModRef, Mod, Ref, ModRef;
public:
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
@@ -41,7 +49,12 @@
AU.setPreservesAll();
}
- bool doInitialization(Module &M) { No = May = Must = 0; return false; }
+ bool doInitialization(Module &M) {
+ NoAlias = MayAlias = MustAlias = 0;
+ NoModRef = Mod = Ref = ModRef = 0;
+ return false;
+ }
+
bool runOnFunction(Function &F);
bool doFinalization(Module &M);
};
@@ -63,6 +76,7 @@
AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
std::set<Value *> Pointers;
+ std::set<CallSite> CallSites;
for (Function::aiterator I = F.abegin(), E = F.aend(); I != E; ++I)
if (isa<PointerType>(I->getType())) // Add all pointer arguments
@@ -76,7 +90,15 @@
Pointers.insert(*OI);
}
- if (PrintNo || PrintMay || PrintMust)
+ for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
+ if (CallInst *CI = dyn_cast<CallInst>(*I))
+ CallSites.insert(CallSite(CI));
+ else if (InvokeInst *II = dyn_cast<InvokeInst>(*I))
+ CallSites.insert(CallSite(II));
+ }
+
+ if (PrintNoAlias || PrintMayAlias || PrintMustAlias ||
+ PrintNoModRef || PrintMod || PrintRef || PrintModRef)
std::cerr << "Function: " << F.getName() << "\n";
// iterate over the worklist, and run the full (n^2)/2 disambiguations
@@ -85,34 +107,81 @@
for (std::set<Value *>::iterator I2 = Pointers.begin(); I2 != I1; ++I2)
switch (AA.alias(*I1, 0, *I2, 0)) {
case AliasAnalysis::NoAlias:
- PrintResults("No", PrintNo, *I1, *I2, F.getParent());
- ++No; break;
+ PrintResults("NoAlias", PrintNoAlias, *I1, *I2, F.getParent());
+ ++NoAlias; break;
case AliasAnalysis::MayAlias:
- PrintResults("May", PrintMay, *I1, *I2, F.getParent());
- ++May; break;
+ PrintResults("MayAlias", PrintMayAlias, *I1, *I2, F.getParent());
+ ++MayAlias; break;
case AliasAnalysis::MustAlias:
- PrintResults("Must", PrintMust, *I1, *I2, F.getParent());
- ++Must; break;
+ PrintResults("MustAlias", PrintMustAlias, *I1, *I2, F.getParent());
+ ++MustAlias; break;
default:
std::cerr << "Unknown alias query result!\n";
}
+ // Mod/ref alias analysis: compare all pairs of calls and values
+ for (std::set<Value *>::iterator V = Pointers.begin(), Ve = Pointers.end();
+ V != Ve; ++V)
+ for (std::set<CallSite>::iterator C = CallSites.begin(),
+ Ce = CallSites.end(); C != Ce; ++C) {
+ Instruction *I = C->getInstruction();
+ switch (AA.getModRefInfo(*C, *V, (*V)->getType()->getPrimitiveSize())) {
+ case AliasAnalysis::NoModRef:
+ PrintResults("NoModRef", PrintNoModRef, I, *V, F.getParent());
+ ++NoModRef; break;
+ case AliasAnalysis::Mod:
+ PrintResults("Mod", PrintMod, I, *V, F.getParent());
+ ++Mod; break;
+ case AliasAnalysis::Ref:
+ PrintResults("Ref", PrintRef, I, *V, F.getParent());
+ ++Ref; break;
+ case AliasAnalysis::ModRef:
+ PrintResults("ModRef", PrintModRef, I, *V, F.getParent());
+ ++ModRef; break;
+ default:
+ std::cerr << "Unknown alias query result!\n";
+ }
+ }
+
return false;
}
bool AAEval::doFinalization(Module &M) {
- unsigned Sum = No+May+Must;
+ unsigned AliasSum = NoAlias + MayAlias + MustAlias;
std::cerr << "===== Alias Analysis Evaluator Report =====\n";
- if (Sum == 0) {
+ if (AliasSum == 0) {
std::cerr << " Alias Analysis Evaluator Summary: No pointers!\n";
- return false;
+ } else {
+ std::cerr << " " << AliasSum << " Total Alias Queries Performed\n";
+ std::cerr << " " << NoAlias << " no alias responses ("
+ << NoAlias*100/AliasSum << "%)\n";
+ std::cerr << " " << MayAlias << " may alias responses ("
+ << MayAlias*100/AliasSum << "%)\n";
+ std::cerr << " " << MustAlias << " must alias responses ("
+ << MustAlias*100/AliasSum <<"%)\n";
+ std::cerr << " Alias Analysis Evaluator Pointer Alias Summary: "
+ << NoAlias*100/AliasSum << "%/" << MayAlias*100/AliasSum << "%/"
+ << MustAlias*100/AliasSum << "%\n";
+ }
+
+ // Display the summary for mod/ref analysis
+ unsigned ModRefSum = NoModRef + Mod + Ref + ModRef;
+ if (ModRefSum == 0) {
+ std::cerr << " Alias Analysis Mod/Ref Evaluator Summary: no mod/ref!\n";
+ } else {
+ std::cerr << " " << ModRefSum << " Total ModRef Queries Performed\n";
+ std::cerr << " " << NoModRef << " no mod/ref responses ("
+ << NoModRef*100/ModRefSum << "%)\n";
+ std::cerr << " " << Mod << " mod responses ("
+ << Mod*100/ModRefSum << "%)\n";
+ std::cerr << " " << Ref << " ref responses ("
+ << Ref*100/ModRefSum <<"%)\n";
+ std::cerr << " " << ModRef << " mod & ref responses ("
+ << ModRef*100/ModRefSum <<"%)\n";
+ std::cerr << " Alias Analysis Evaluator Mod/Ref Summary: "
+ << NoModRef*100/ModRefSum << "%/" << Mod*100/ModRefSum << "%/"
+ << Ref*100/ModRefSum << "%/" << ModRef*100/ModRefSum << "%\n";
}
- std::cerr << " " << Sum << " Total Alias Queries Performed\n";
- std::cerr << " " << No << " no alias responses (" << No*100/Sum << "%)\n";
- std::cerr << " " << May << " may alias responses (" << May*100/Sum << "%)\n";
- std::cerr << " " << Must << " must alias responses (" <<Must*100/Sum<<"%)\n";
- std::cerr << " Alias Analysis Evaluator Summary: " << No*100/Sum << "%/"
- << May*100/Sum << "%/" << Must*100/Sum<<"%\n";
return false;
}
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