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Add two options to allow -count-aa to print queries either (1) all queries,

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or (2) only queries that are not successful (e.g. return may alias)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20790 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-03-23 21:59:07 +00:00
parent b8190e6b30
commit cf9f20189f
1 changed files with 59 additions and 25 deletions
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84
lib/Analysis/AliasAnalysisCounter.cpp
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@ -13,16 +13,24 @@
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#include "llvm/Analysis/Passes.h" #include "llvm/Analysis/Passes.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Pass.h" #include "llvm/Pass.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Support/CommandLine.h"
#include <iostream> #include <iostream>
using namespace llvm; using namespace llvm;
namespace { namespace {
cl::opt<bool>
PrintAll("count-aa-print-all-queries", cl::ReallyHidden);
cl::opt<bool>
PrintAllFailures("count-aa-print-all-failed-queries", cl::ReallyHidden);
class AliasAnalysisCounter : public ModulePass, public AliasAnalysis { class AliasAnalysisCounter : public ModulePass, public AliasAnalysis {
unsigned No, May, Must; unsigned No, May, Must;
unsigned NoMR, JustRef, JustMod, MR; unsigned NoMR, JustRef, JustMod, MR;
const char *Name; const char *Name;
Module *M;
public: public:
AliasAnalysisCounter() { AliasAnalysisCounter() {
No = May = Must = 0; No = May = Must = 0;
@ -66,6 +74,7 @@ namespace {
} }
bool runOnModule(Module &M) { bool runOnModule(Module &M) {
this->M = &M;
InitializeAliasAnalysis(this); InitializeAliasAnalysis(this);
Name = dynamic_cast<Pass*>(&getAnalysis<AliasAnalysis>())->getPassName(); Name = dynamic_cast<Pass*>(&getAnalysis<AliasAnalysis>())->getPassName();
return false; return false;
@ -77,24 +86,6 @@ namespace {
AU.setPreservesAll(); AU.setPreservesAll();
} }
AliasResult count(AliasResult R) {
switch (R) {
default: assert(0 && "Unknown alias type!");
case NoAlias: No++; return NoAlias;
case MayAlias: May++; return MayAlias;
case MustAlias: Must++; return MustAlias;
}
}
ModRefResult count(ModRefResult R) {
switch (R) {
default: assert(0 && "Unknown mod/ref type!");
case NoModRef: NoMR++; return NoModRef;
case Ref: JustRef++; return Ref;
case Mod: JustMod++; return Mod;
case ModRef: MR++; return ModRef;
}
}
// FIXME: We could count these too... // FIXME: We could count these too...
bool pointsToConstantMemory(const Value *P) { bool pointsToConstantMemory(const Value *P) {
return getAnalysis<AliasAnalysis>().pointsToConstantMemory(P); return getAnalysis<AliasAnalysis>().pointsToConstantMemory(P);
@ -110,12 +101,9 @@ namespace {
// Forwarding functions: just delegate to a real AA implementation, counting // Forwarding functions: just delegate to a real AA implementation, counting
// the number of responses... // the number of responses...
AliasResult alias(const Value *V1, unsigned V1Size, AliasResult alias(const Value *V1, unsigned V1Size,
const Value *V2, unsigned V2Size) { const Value *V2, unsigned V2Size);
return count(getAnalysis<AliasAnalysis>().alias(V1, V1Size, V2, V2Size));
} ModRefResult getModRefInfo(CallSite CS, Value *P, unsigned Size);
ModRefResult getModRefInfo(CallSite CS, Value *P, unsigned Size) {
return count(getAnalysis<AliasAnalysis>().getModRefInfo(CS, P, Size));
}
ModRefResult getModRefInfo(CallSite CS1, CallSite CS2) { ModRefResult getModRefInfo(CallSite CS1, CallSite CS2) {
return AliasAnalysis::getModRefInfo(CS1,CS2); return AliasAnalysis::getModRefInfo(CS1,CS2);
} }
@ -129,3 +117,49 @@ namespace {
ModulePass *llvm::createAliasAnalysisCounterPass() { ModulePass *llvm::createAliasAnalysisCounterPass() {
return new AliasAnalysisCounter(); return new AliasAnalysisCounter();
} }
AliasAnalysis::AliasResult
AliasAnalysisCounter::alias(const Value *V1, unsigned V1Size,
const Value *V2, unsigned V2Size) {
AliasResult R = getAnalysis<AliasAnalysis>().alias(V1, V1Size, V2, V2Size);
const char *AliasString;
switch (R) {
default: assert(0 && "Unknown alias type!");
case NoAlias: No++; AliasString = "No alias"; break;
case MayAlias: May++; AliasString = "May alias"; break;
case MustAlias: Must++; AliasString = "Must alias"; break;
}
if (PrintAll || (PrintAllFailures && R == MayAlias)) {
std::cerr << AliasString << ":\t";
std::cerr << "[" << V1Size << "B] ";
WriteAsOperand(std::cerr, V1, true, true, M) << ", ";
std::cerr << "[" << V2Size << "B] ";
WriteAsOperand(std::cerr, V2, true, true, M) << "\n";
}
return R;
}
AliasAnalysis::ModRefResult
AliasAnalysisCounter::getModRefInfo(CallSite CS, Value *P, unsigned Size) {
ModRefResult R = getAnalysis<AliasAnalysis>().getModRefInfo(CS, P, Size);
const char *MRString;
switch (R) {
default: assert(0 && "Unknown mod/ref type!");
case NoModRef: NoMR++; MRString = "NoModRef"; break;
case Ref: JustRef++; MRString = "JustRef"; break;
case Mod: JustMod++; MRString = "JustMod"; break;
case ModRef: MR++; MRString = "ModRef"; break;
}
if (PrintAll || (PrintAllFailures && R == ModRef)) {
std::cerr << MRString << ": Ptr: ";
std::cerr << "[" << Size << "B] ";
WriteAsOperand(std::cerr, P, true, true, M);
std::cerr << "\t<->" << *CS.getInstruction();
}
return R;
}